Context.java revision 5784b39843bd3d6112352ff3b736a6498107911c
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.content; 18 19import android.annotation.IntDef; 20import android.annotation.NonNull; 21import android.annotation.Nullable; 22import android.annotation.StringDef; 23import android.content.pm.ApplicationInfo; 24import android.content.pm.PackageManager; 25import android.content.res.AssetManager; 26import android.content.res.Configuration; 27import android.content.res.Resources; 28import android.content.res.TypedArray; 29import android.database.DatabaseErrorHandler; 30import android.database.sqlite.SQLiteDatabase; 31import android.database.sqlite.SQLiteDatabase.CursorFactory; 32import android.graphics.Bitmap; 33import android.graphics.drawable.Drawable; 34import android.media.MediaScannerConnection.OnScanCompletedListener; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Environment; 38import android.os.Handler; 39import android.os.Looper; 40import android.os.StatFs; 41import android.os.UserHandle; 42import android.os.UserManager; 43import android.util.AttributeSet; 44import android.view.DisplayAdjustments; 45import android.view.Display; 46import android.view.WindowManager; 47 48import java.io.File; 49import java.io.FileInputStream; 50import java.io.FileNotFoundException; 51import java.io.FileOutputStream; 52import java.io.IOException; 53import java.io.InputStream; 54import java.lang.annotation.Retention; 55import java.lang.annotation.RetentionPolicy; 56 57/** 58 * Interface to global information about an application environment. This is 59 * an abstract class whose implementation is provided by 60 * the Android system. It 61 * allows access to application-specific resources and classes, as well as 62 * up-calls for application-level operations such as launching activities, 63 * broadcasting and receiving intents, etc. 64 */ 65public abstract class Context { 66 /** 67 * File creation mode: the default mode, where the created file can only 68 * be accessed by the calling application (or all applications sharing the 69 * same user ID). 70 * @see #MODE_WORLD_READABLE 71 * @see #MODE_WORLD_WRITEABLE 72 */ 73 public static final int MODE_PRIVATE = 0x0000; 74 /** 75 * @deprecated Creating world-readable files is very dangerous, and likely 76 * to cause security holes in applications. It is strongly discouraged; 77 * instead, applications should use more formal mechanism for interactions 78 * such as {@link ContentProvider}, {@link BroadcastReceiver}, and 79 * {@link android.app.Service}. There are no guarantees that this 80 * access mode will remain on a file, such as when it goes through a 81 * backup and restore. 82 * File creation mode: allow all other applications to have read access 83 * to the created file. 84 * @see #MODE_PRIVATE 85 * @see #MODE_WORLD_WRITEABLE 86 */ 87 @Deprecated 88 public static final int MODE_WORLD_READABLE = 0x0001; 89 /** 90 * @deprecated Creating world-writable files is very dangerous, and likely 91 * to cause security holes in applications. It is strongly discouraged; 92 * instead, applications should use more formal mechanism for interactions 93 * such as {@link ContentProvider}, {@link BroadcastReceiver}, and 94 * {@link android.app.Service}. There are no guarantees that this 95 * access mode will remain on a file, such as when it goes through a 96 * backup and restore. 97 * File creation mode: allow all other applications to have write access 98 * to the created file. 99 * @see #MODE_PRIVATE 100 * @see #MODE_WORLD_READABLE 101 */ 102 @Deprecated 103 public static final int MODE_WORLD_WRITEABLE = 0x0002; 104 /** 105 * File creation mode: for use with {@link #openFileOutput}, if the file 106 * already exists then write data to the end of the existing file 107 * instead of erasing it. 108 * @see #openFileOutput 109 */ 110 public static final int MODE_APPEND = 0x8000; 111 112 /** 113 * SharedPreference loading flag: when set, the file on disk will 114 * be checked for modification even if the shared preferences 115 * instance is already loaded in this process. This behavior is 116 * sometimes desired in cases where the application has multiple 117 * processes, all writing to the same SharedPreferences file. 118 * Generally there are better forms of communication between 119 * processes, though. 120 * 121 * <p>This was the legacy (but undocumented) behavior in and 122 * before Gingerbread (Android 2.3) and this flag is implied when 123 * targetting such releases. For applications targetting SDK 124 * versions <em>greater than</em> Android 2.3, this flag must be 125 * explicitly set if desired. 126 * 127 * @see #getSharedPreferences 128 */ 129 public static final int MODE_MULTI_PROCESS = 0x0004; 130 131 /** 132 * Database open flag: when set, the database is opened with write-ahead 133 * logging enabled by default. 134 * 135 * @see #openOrCreateDatabase(String, int, CursorFactory) 136 * @see #openOrCreateDatabase(String, int, CursorFactory, DatabaseErrorHandler) 137 * @see SQLiteDatabase#enableWriteAheadLogging 138 */ 139 public static final int MODE_ENABLE_WRITE_AHEAD_LOGGING = 0x0008; 140 141 /** @hide */ 142 @IntDef(flag = true, 143 value = { 144 BIND_AUTO_CREATE, 145 BIND_AUTO_CREATE, 146 BIND_DEBUG_UNBIND, 147 BIND_NOT_FOREGROUND, 148 BIND_ABOVE_CLIENT, 149 BIND_ALLOW_OOM_MANAGEMENT, 150 BIND_WAIVE_PRIORITY 151 }) 152 @Retention(RetentionPolicy.SOURCE) 153 public @interface BindServiceFlags {} 154 155 /** 156 * Flag for {@link #bindService}: automatically create the service as long 157 * as the binding exists. Note that while this will create the service, 158 * its {@link android.app.Service#onStartCommand} 159 * method will still only be called due to an 160 * explicit call to {@link #startService}. Even without that, though, 161 * this still provides you with access to the service object while the 162 * service is created. 163 * 164 * <p>Note that prior to {@link android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH}, 165 * not supplying this flag would also impact how important the system 166 * consider's the target service's process to be. When set, the only way 167 * for it to be raised was by binding from a service in which case it will 168 * only be important when that activity is in the foreground. Now to 169 * achieve this behavior you must explicitly supply the new flag 170 * {@link #BIND_ADJUST_WITH_ACTIVITY}. For compatibility, old applications 171 * that don't specify {@link #BIND_AUTO_CREATE} will automatically have 172 * the flags {@link #BIND_WAIVE_PRIORITY} and 173 * {@link #BIND_ADJUST_WITH_ACTIVITY} set for them in order to achieve 174 * the same result. 175 */ 176 public static final int BIND_AUTO_CREATE = 0x0001; 177 178 /** 179 * Flag for {@link #bindService}: include debugging help for mismatched 180 * calls to unbind. When this flag is set, the callstack of the following 181 * {@link #unbindService} call is retained, to be printed if a later 182 * incorrect unbind call is made. Note that doing this requires retaining 183 * information about the binding that was made for the lifetime of the app, 184 * resulting in a leak -- this should only be used for debugging. 185 */ 186 public static final int BIND_DEBUG_UNBIND = 0x0002; 187 188 /** 189 * Flag for {@link #bindService}: don't allow this binding to raise 190 * the target service's process to the foreground scheduling priority. 191 * It will still be raised to at least the same memory priority 192 * as the client (so that its process will not be killable in any 193 * situation where the client is not killable), but for CPU scheduling 194 * purposes it may be left in the background. This only has an impact 195 * in the situation where the binding client is a foreground process 196 * and the target service is in a background process. 197 */ 198 public static final int BIND_NOT_FOREGROUND = 0x0004; 199 200 /** 201 * Flag for {@link #bindService}: indicates that the client application 202 * binding to this service considers the service to be more important than 203 * the app itself. When set, the platform will try to have the out of 204 * memory killer kill the app before it kills the service it is bound to, though 205 * this is not guaranteed to be the case. 206 */ 207 public static final int BIND_ABOVE_CLIENT = 0x0008; 208 209 /** 210 * Flag for {@link #bindService}: allow the process hosting the bound 211 * service to go through its normal memory management. It will be 212 * treated more like a running service, allowing the system to 213 * (temporarily) expunge the process if low on memory or for some other 214 * whim it may have, and being more aggressive about making it a candidate 215 * to be killed (and restarted) if running for a long time. 216 */ 217 public static final int BIND_ALLOW_OOM_MANAGEMENT = 0x0010; 218 219 /** 220 * Flag for {@link #bindService}: don't impact the scheduling or 221 * memory management priority of the target service's hosting process. 222 * Allows the service's process to be managed on the background LRU list 223 * just like a regular application process in the background. 224 */ 225 public static final int BIND_WAIVE_PRIORITY = 0x0020; 226 227 /** 228 * Flag for {@link #bindService}: this service is very important to 229 * the client, so should be brought to the foreground process level 230 * when the client is. Normally a process can only be raised to the 231 * visibility level by a client, even if that client is in the foreground. 232 */ 233 public static final int BIND_IMPORTANT = 0x0040; 234 235 /** 236 * Flag for {@link #bindService}: If binding from an activity, allow the 237 * target service's process importance to be raised based on whether the 238 * activity is visible to the user, regardless whether another flag is 239 * used to reduce the amount that the client process's overall importance 240 * is used to impact it. 241 */ 242 public static final int BIND_ADJUST_WITH_ACTIVITY = 0x0080; 243 244 /** 245 * @hide Flag for {@link #bindService}: Treat the binding as hosting 246 * an activity, an unbinding as the activity going in the background. 247 * That is, when unbinding, the process when empty will go on the activity 248 * LRU list instead of the regular one, keeping it around more aggressively 249 * than it otherwise would be. This is intended for use with IMEs to try 250 * to keep IME processes around for faster keyboard switching. 251 */ 252 public static final int BIND_TREAT_LIKE_ACTIVITY = 0x08000000; 253 254 /** 255 * @hide An idea that is not yet implemented. 256 * Flag for {@link #bindService}: If binding from an activity, consider 257 * this service to be visible like the binding activity is. That is, 258 * it will be treated as something more important to keep around than 259 * invisible background activities. This will impact the number of 260 * recent activities the user can switch between without having them 261 * restart. There is no guarantee this will be respected, as the system 262 * tries to balance such requests from one app vs. the importantance of 263 * keeping other apps around. 264 */ 265 public static final int BIND_VISIBLE = 0x10000000; 266 267 /** 268 * @hide 269 * Flag for {@link #bindService}: Consider this binding to be causing the target 270 * process to be showing UI, so it will be do a UI_HIDDEN memory trim when it goes 271 * away. 272 */ 273 public static final int BIND_SHOWING_UI = 0x20000000; 274 275 /** 276 * Flag for {@link #bindService}: Don't consider the bound service to be 277 * visible, even if the caller is visible. 278 * @hide 279 */ 280 public static final int BIND_NOT_VISIBLE = 0x40000000; 281 282 /** Return an AssetManager instance for your application's package. */ 283 public abstract AssetManager getAssets(); 284 285 /** Return a Resources instance for your application's package. */ 286 public abstract Resources getResources(); 287 288 /** Return PackageManager instance to find global package information. */ 289 public abstract PackageManager getPackageManager(); 290 291 /** Return a ContentResolver instance for your application's package. */ 292 public abstract ContentResolver getContentResolver(); 293 294 /** 295 * Return the Looper for the main thread of the current process. This is 296 * the thread used to dispatch calls to application components (activities, 297 * services, etc). 298 * <p> 299 * By definition, this method returns the same result as would be obtained 300 * by calling {@link Looper#getMainLooper() Looper.getMainLooper()}. 301 * </p> 302 * 303 * @return The main looper. 304 */ 305 public abstract Looper getMainLooper(); 306 307 /** 308 * Return the context of the single, global Application object of the 309 * current process. This generally should only be used if you need a 310 * Context whose lifecycle is separate from the current context, that is 311 * tied to the lifetime of the process rather than the current component. 312 * 313 * <p>Consider for example how this interacts with 314 * {@link #registerReceiver(BroadcastReceiver, IntentFilter)}: 315 * <ul> 316 * <li> <p>If used from an Activity context, the receiver is being registered 317 * within that activity. This means that you are expected to unregister 318 * before the activity is done being destroyed; in fact if you do not do 319 * so, the framework will clean up your leaked registration as it removes 320 * the activity and log an error. Thus, if you use the Activity context 321 * to register a receiver that is static (global to the process, not 322 * associated with an Activity instance) then that registration will be 323 * removed on you at whatever point the activity you used is destroyed. 324 * <li> <p>If used from the Context returned here, the receiver is being 325 * registered with the global state associated with your application. Thus 326 * it will never be unregistered for you. This is necessary if the receiver 327 * is associated with static data, not a particular component. However 328 * using the ApplicationContext elsewhere can easily lead to serious leaks 329 * if you forget to unregister, unbind, etc. 330 * </ul> 331 */ 332 public abstract Context getApplicationContext(); 333 334 /** 335 * Add a new {@link ComponentCallbacks} to the base application of the 336 * Context, which will be called at the same times as the ComponentCallbacks 337 * methods of activities and other components are called. Note that you 338 * <em>must</em> be sure to use {@link #unregisterComponentCallbacks} when 339 * appropriate in the future; this will not be removed for you. 340 * 341 * @param callback The interface to call. This can be either a 342 * {@link ComponentCallbacks} or {@link ComponentCallbacks2} interface. 343 */ 344 public void registerComponentCallbacks(ComponentCallbacks callback) { 345 getApplicationContext().registerComponentCallbacks(callback); 346 } 347 348 /** 349 * Remove a {@link ComponentCallbacks} object that was previously registered 350 * with {@link #registerComponentCallbacks(ComponentCallbacks)}. 351 */ 352 public void unregisterComponentCallbacks(ComponentCallbacks callback) { 353 getApplicationContext().unregisterComponentCallbacks(callback); 354 } 355 356 /** 357 * Return a localized, styled CharSequence from the application's package's 358 * default string table. 359 * 360 * @param resId Resource id for the CharSequence text 361 */ 362 public final CharSequence getText(int resId) { 363 return getResources().getText(resId); 364 } 365 366 /** 367 * Return a localized string from the application's package's 368 * default string table. 369 * 370 * @param resId Resource id for the string 371 */ 372 public final String getString(int resId) { 373 return getResources().getString(resId); 374 } 375 376 /** 377 * Return a localized formatted string from the application's package's 378 * default string table, substituting the format arguments as defined in 379 * {@link java.util.Formatter} and {@link java.lang.String#format}. 380 * 381 * @param resId Resource id for the format string 382 * @param formatArgs The format arguments that will be used for substitution. 383 */ 384 385 public final String getString(int resId, Object... formatArgs) { 386 return getResources().getString(resId, formatArgs); 387 } 388 389 /** 390 * Return a drawable object associated with a particular resource ID and 391 * styled for the current theme. 392 * 393 * @param id The desired resource identifier, as generated by the aapt 394 * tool. This integer encodes the package, type, and resource 395 * entry. The value 0 is an invalid identifier. 396 * @return Drawable An object that can be used to draw this resource. 397 */ 398 public final Drawable getDrawable(int id) { 399 return getResources().getDrawable(id, getTheme()); 400 } 401 402 /** 403 * Set the base theme for this context. Note that this should be called 404 * before any views are instantiated in the Context (for example before 405 * calling {@link android.app.Activity#setContentView} or 406 * {@link android.view.LayoutInflater#inflate}). 407 * 408 * @param resid The style resource describing the theme. 409 */ 410 public abstract void setTheme(int resid); 411 412 /** @hide Needed for some internal implementation... not public because 413 * you can't assume this actually means anything. */ 414 public int getThemeResId() { 415 return 0; 416 } 417 418 /** 419 * Return the Theme object associated with this Context. 420 */ 421 public abstract Resources.Theme getTheme(); 422 423 /** 424 * Retrieve styled attribute information in this Context's theme. See 425 * {@link Resources.Theme#obtainStyledAttributes(int[])} 426 * for more information. 427 * 428 * @see Resources.Theme#obtainStyledAttributes(int[]) 429 */ 430 public final TypedArray obtainStyledAttributes( 431 int[] attrs) { 432 return getTheme().obtainStyledAttributes(attrs); 433 } 434 435 /** 436 * Retrieve styled attribute information in this Context's theme. See 437 * {@link Resources.Theme#obtainStyledAttributes(int, int[])} 438 * for more information. 439 * 440 * @see Resources.Theme#obtainStyledAttributes(int, int[]) 441 */ 442 public final TypedArray obtainStyledAttributes( 443 int resid, int[] attrs) throws Resources.NotFoundException { 444 return getTheme().obtainStyledAttributes(resid, attrs); 445 } 446 447 /** 448 * Retrieve styled attribute information in this Context's theme. See 449 * {@link Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int)} 450 * for more information. 451 * 452 * @see Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 453 */ 454 public final TypedArray obtainStyledAttributes( 455 AttributeSet set, int[] attrs) { 456 return getTheme().obtainStyledAttributes(set, attrs, 0, 0); 457 } 458 459 /** 460 * Retrieve styled attribute information in this Context's theme. See 461 * {@link Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int)} 462 * for more information. 463 * 464 * @see Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 465 */ 466 public final TypedArray obtainStyledAttributes( 467 AttributeSet set, int[] attrs, int defStyleAttr, int defStyleRes) { 468 return getTheme().obtainStyledAttributes( 469 set, attrs, defStyleAttr, defStyleRes); 470 } 471 472 /** 473 * Return a class loader you can use to retrieve classes in this package. 474 */ 475 public abstract ClassLoader getClassLoader(); 476 477 /** Return the name of this application's package. */ 478 public abstract String getPackageName(); 479 480 /** @hide Return the name of the base context this context is derived from. */ 481 public abstract String getBasePackageName(); 482 483 /** @hide Return the package name that should be used for app ops calls from 484 * this context. This is the same as {@link #getBasePackageName()} except in 485 * cases where system components are loaded into other app processes, in which 486 * case this will be the name of the primary package in that process (so that app 487 * ops uid verification will work with the name). */ 488 public abstract String getOpPackageName(); 489 490 /** Return the full application info for this context's package. */ 491 public abstract ApplicationInfo getApplicationInfo(); 492 493 /** 494 * Return the full path to this context's primary Android package. 495 * The Android package is a ZIP file which contains the application's 496 * primary resources. 497 * 498 * <p>Note: this is not generally useful for applications, since they should 499 * not be directly accessing the file system. 500 * 501 * @return String Path to the resources. 502 */ 503 public abstract String getPackageResourcePath(); 504 505 /** 506 * Return the full path to this context's primary Android package. 507 * The Android package is a ZIP file which contains application's 508 * primary code and assets. 509 * 510 * <p>Note: this is not generally useful for applications, since they should 511 * not be directly accessing the file system. 512 * 513 * @return String Path to the code and assets. 514 */ 515 public abstract String getPackageCodePath(); 516 517 /** 518 * {@hide} 519 * Return the full path to the shared prefs file for the given prefs group name. 520 * 521 * <p>Note: this is not generally useful for applications, since they should 522 * not be directly accessing the file system. 523 */ 524 public abstract File getSharedPrefsFile(String name); 525 526 /** 527 * Retrieve and hold the contents of the preferences file 'name', returning 528 * a SharedPreferences through which you can retrieve and modify its 529 * values. Only one instance of the SharedPreferences object is returned 530 * to any callers for the same name, meaning they will see each other's 531 * edits as soon as they are made. 532 * 533 * @param name Desired preferences file. If a preferences file by this name 534 * does not exist, it will be created when you retrieve an 535 * editor (SharedPreferences.edit()) and then commit changes (Editor.commit()). 536 * @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the 537 * default operation, {@link #MODE_WORLD_READABLE} 538 * and {@link #MODE_WORLD_WRITEABLE} to control permissions. The bit 539 * {@link #MODE_MULTI_PROCESS} can also be used if multiple processes 540 * are mutating the same SharedPreferences file. {@link #MODE_MULTI_PROCESS} 541 * is always on in apps targeting Gingerbread (Android 2.3) and below, and 542 * off by default in later versions. 543 * 544 * @return The single {@link SharedPreferences} instance that can be used 545 * to retrieve and modify the preference values. 546 * 547 * @see #MODE_PRIVATE 548 * @see #MODE_WORLD_READABLE 549 * @see #MODE_WORLD_WRITEABLE 550 * @see #MODE_MULTI_PROCESS 551 */ 552 public abstract SharedPreferences getSharedPreferences(String name, 553 int mode); 554 555 /** 556 * Open a private file associated with this Context's application package 557 * for reading. 558 * 559 * @param name The name of the file to open; can not contain path 560 * separators. 561 * 562 * @return The resulting {@link FileInputStream}. 563 * 564 * @see #openFileOutput 565 * @see #fileList 566 * @see #deleteFile 567 * @see java.io.FileInputStream#FileInputStream(String) 568 */ 569 public abstract FileInputStream openFileInput(String name) 570 throws FileNotFoundException; 571 572 /** 573 * Open a private file associated with this Context's application package 574 * for writing. Creates the file if it doesn't already exist. 575 * 576 * <p>No permissions are required to invoke this method, since it uses internal 577 * storage. 578 * 579 * @param name The name of the file to open; can not contain path 580 * separators. 581 * @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the 582 * default operation, {@link #MODE_APPEND} to append to an existing file, 583 * {@link #MODE_WORLD_READABLE} and {@link #MODE_WORLD_WRITEABLE} to control 584 * permissions. 585 * 586 * @return The resulting {@link FileOutputStream}. 587 * 588 * @see #MODE_APPEND 589 * @see #MODE_PRIVATE 590 * @see #MODE_WORLD_READABLE 591 * @see #MODE_WORLD_WRITEABLE 592 * @see #openFileInput 593 * @see #fileList 594 * @see #deleteFile 595 * @see java.io.FileOutputStream#FileOutputStream(String) 596 */ 597 public abstract FileOutputStream openFileOutput(String name, int mode) 598 throws FileNotFoundException; 599 600 /** 601 * Delete the given private file associated with this Context's 602 * application package. 603 * 604 * @param name The name of the file to delete; can not contain path 605 * separators. 606 * 607 * @return {@code true} if the file was successfully deleted; else 608 * {@code false}. 609 * 610 * @see #openFileInput 611 * @see #openFileOutput 612 * @see #fileList 613 * @see java.io.File#delete() 614 */ 615 public abstract boolean deleteFile(String name); 616 617 /** 618 * Returns the absolute path on the filesystem where a file created with 619 * {@link #openFileOutput} is stored. 620 * 621 * @param name The name of the file for which you would like to get 622 * its path. 623 * 624 * @return An absolute path to the given file. 625 * 626 * @see #openFileOutput 627 * @see #getFilesDir 628 * @see #getDir 629 */ 630 public abstract File getFileStreamPath(String name); 631 632 /** 633 * Returns the absolute path to the directory on the filesystem where 634 * files created with {@link #openFileOutput} are stored. 635 * 636 * <p>No permissions are required to read or write to the returned path, since this 637 * path is internal storage. 638 * 639 * @return The path of the directory holding application files. 640 * 641 * @see #openFileOutput 642 * @see #getFileStreamPath 643 * @see #getDir 644 */ 645 public abstract File getFilesDir(); 646 647 /** 648 * Returns the absolute path to the directory on the primary external filesystem 649 * (that is somewhere on {@link android.os.Environment#getExternalStorageDirectory() 650 * Environment.getExternalStorageDirectory()}) where the application can 651 * place persistent files it owns. These files are internal to the 652 * applications, and not typically visible to the user as media. 653 * 654 * <p>This is like {@link #getFilesDir()} in that these 655 * files will be deleted when the application is uninstalled, however there 656 * are some important differences: 657 * 658 * <ul> 659 * <li>External files are not always available: they will disappear if the 660 * user mounts the external storage on a computer or removes it. See the 661 * APIs on {@link android.os.Environment} for information in the storage state. 662 * <li>There is no security enforced with these files. For example, any application 663 * holding {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} can write to 664 * these files. 665 * </ul> 666 * 667 * <p>Starting in {@link android.os.Build.VERSION_CODES#KITKAT}, no permissions 668 * are required to read or write to the returned path; it's always 669 * accessible to the calling app. This only applies to paths generated for 670 * package name of the calling application. To access paths belonging 671 * to other packages, {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} 672 * and/or {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} are required. 673 * 674 * <p>On devices with multiple users (as described by {@link UserManager}), 675 * each user has their own isolated external storage. Applications only 676 * have access to the external storage for the user they're running as.</p> 677 * 678 * <p>Here is an example of typical code to manipulate a file in 679 * an application's private storage:</p> 680 * 681 * {@sample development/samples/ApiDemos/src/com/example/android/apis/content/ExternalStorage.java 682 * private_file} 683 * 684 * <p>If you supply a non-null <var>type</var> to this function, the returned 685 * file will be a path to a sub-directory of the given type. Though these files 686 * are not automatically scanned by the media scanner, you can explicitly 687 * add them to the media database with 688 * {@link android.media.MediaScannerConnection#scanFile(Context, String[], String[], 689 * OnScanCompletedListener) MediaScannerConnection.scanFile}. 690 * Note that this is not the same as 691 * {@link android.os.Environment#getExternalStoragePublicDirectory 692 * Environment.getExternalStoragePublicDirectory()}, which provides 693 * directories of media shared by all applications. The 694 * directories returned here are 695 * owned by the application, and their contents will be removed when the 696 * application is uninstalled. Unlike 697 * {@link android.os.Environment#getExternalStoragePublicDirectory 698 * Environment.getExternalStoragePublicDirectory()}, the directory 699 * returned here will be automatically created for you. 700 * 701 * <p>Here is an example of typical code to manipulate a picture in 702 * an application's private storage and add it to the media database:</p> 703 * 704 * {@sample development/samples/ApiDemos/src/com/example/android/apis/content/ExternalStorage.java 705 * private_picture} 706 * 707 * @param type The type of files directory to return. May be null for 708 * the root of the files directory or one of 709 * the following Environment constants for a subdirectory: 710 * {@link android.os.Environment#DIRECTORY_MUSIC}, 711 * {@link android.os.Environment#DIRECTORY_PODCASTS}, 712 * {@link android.os.Environment#DIRECTORY_RINGTONES}, 713 * {@link android.os.Environment#DIRECTORY_ALARMS}, 714 * {@link android.os.Environment#DIRECTORY_NOTIFICATIONS}, 715 * {@link android.os.Environment#DIRECTORY_PICTURES}, or 716 * {@link android.os.Environment#DIRECTORY_MOVIES}. 717 * 718 * @return The path of the directory holding application files 719 * on external storage. Returns null if external storage is not currently 720 * mounted so it could not ensure the path exists; you will need to call 721 * this method again when it is available. 722 * 723 * @see #getFilesDir 724 * @see android.os.Environment#getExternalStoragePublicDirectory 725 */ 726 @Nullable 727 public abstract File getExternalFilesDir(@Nullable String type); 728 729 /** 730 * Returns absolute paths to application-specific directories on all 731 * external storage devices where the application can place persistent files 732 * it owns. These files are internal to the application, and not typically 733 * visible to the user as media. 734 * <p> 735 * This is like {@link #getFilesDir()} in that these files will be deleted when 736 * the application is uninstalled, however there are some important differences: 737 * <ul> 738 * <li>External files are not always available: they will disappear if the 739 * user mounts the external storage on a computer or removes it. 740 * <li>There is no security enforced with these files. 741 * </ul> 742 * <p> 743 * External storage devices returned here are considered a permanent part of 744 * the device, including both emulated external storage and physical media 745 * slots, such as SD cards in a battery compartment. The returned paths do 746 * not include transient devices, such as USB flash drives. 747 * <p> 748 * An application may store data on any or all of the returned devices. For 749 * example, an app may choose to store large files on the device with the 750 * most available space, as measured by {@link StatFs}. 751 * <p> 752 * No permissions are required to read or write to the returned paths; they 753 * are always accessible to the calling app. Write access outside of these 754 * paths on secondary external storage devices is not available. 755 * <p> 756 * The first path returned is the same as {@link #getExternalFilesDir(String)}. 757 * Returned paths may be {@code null} if a storage device is unavailable. 758 * 759 * @see #getExternalFilesDir(String) 760 * @see Environment#getExternalStorageState(File) 761 */ 762 public abstract File[] getExternalFilesDirs(String type); 763 764 /** 765 * Return the primary external storage directory where this application's OBB 766 * files (if there are any) can be found. Note if the application does not have 767 * any OBB files, this directory may not exist. 768 * <p> 769 * This is like {@link #getFilesDir()} in that these files will be deleted when 770 * the application is uninstalled, however there are some important differences: 771 * <ul> 772 * <li>External files are not always available: they will disappear if the 773 * user mounts the external storage on a computer or removes it. 774 * <li>There is no security enforced with these files. For example, any application 775 * holding {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} can write to 776 * these files. 777 * </ul> 778 * <p> 779 * Starting in {@link android.os.Build.VERSION_CODES#KITKAT}, no permissions 780 * are required to read or write to the returned path; it's always 781 * accessible to the calling app. This only applies to paths generated for 782 * package name of the calling application. To access paths belonging 783 * to other packages, {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} 784 * and/or {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} are required. 785 * <p> 786 * On devices with multiple users (as described by {@link UserManager}), 787 * multiple users may share the same OBB storage location. Applications 788 * should ensure that multiple instances running under different users don't 789 * interfere with each other. 790 */ 791 public abstract File getObbDir(); 792 793 /** 794 * Returns absolute paths to application-specific directories on all 795 * external storage devices where the application's OBB files (if there are 796 * any) can be found. Note if the application does not have any OBB files, 797 * these directories may not exist. 798 * <p> 799 * This is like {@link #getFilesDir()} in that these files will be deleted when 800 * the application is uninstalled, however there are some important differences: 801 * <ul> 802 * <li>External files are not always available: they will disappear if the 803 * user mounts the external storage on a computer or removes it. 804 * <li>There is no security enforced with these files. 805 * </ul> 806 * <p> 807 * External storage devices returned here are considered a permanent part of 808 * the device, including both emulated external storage and physical media 809 * slots, such as SD cards in a battery compartment. The returned paths do 810 * not include transient devices, such as USB flash drives. 811 * <p> 812 * An application may store data on any or all of the returned devices. For 813 * example, an app may choose to store large files on the device with the 814 * most available space, as measured by {@link StatFs}. 815 * <p> 816 * No permissions are required to read or write to the returned paths; they 817 * are always accessible to the calling app. Write access outside of these 818 * paths on secondary external storage devices is not available. 819 * <p> 820 * The first path returned is the same as {@link #getObbDir()}. 821 * Returned paths may be {@code null} if a storage device is unavailable. 822 * 823 * @see #getObbDir() 824 * @see Environment#getExternalStorageState(File) 825 */ 826 public abstract File[] getObbDirs(); 827 828 /** 829 * Returns the absolute path to the application specific cache directory 830 * on the filesystem. These files will be ones that get deleted first when the 831 * device runs low on storage. 832 * There is no guarantee when these files will be deleted. 833 * 834 * <strong>Note: you should not <em>rely</em> on the system deleting these 835 * files for you; you should always have a reasonable maximum, such as 1 MB, 836 * for the amount of space you consume with cache files, and prune those 837 * files when exceeding that space.</strong> 838 * 839 * @return The path of the directory holding application cache files. 840 * 841 * @see #openFileOutput 842 * @see #getFileStreamPath 843 * @see #getDir 844 */ 845 public abstract File getCacheDir(); 846 847 /** 848 * Returns the absolute path to the directory on the primary external filesystem 849 * (that is somewhere on {@link android.os.Environment#getExternalStorageDirectory() 850 * Environment.getExternalStorageDirectory()} where the application can 851 * place cache files it owns. These files are internal to the application, and 852 * not typically visible to the user as media. 853 * 854 * <p>This is like {@link #getCacheDir()} in that these 855 * files will be deleted when the application is uninstalled, however there 856 * are some important differences: 857 * 858 * <ul> 859 * <li>The platform does not always monitor the space available in external 860 * storage, and thus may not automatically delete these files. Currently 861 * the only time files here will be deleted by the platform is when running 862 * on {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} or later and 863 * {@link android.os.Environment#isExternalStorageEmulated() 864 * Environment.isExternalStorageEmulated()} returns true. Note that you should 865 * be managing the maximum space you will use for these anyway, just like 866 * with {@link #getCacheDir()}. 867 * <li>External files are not always available: they will disappear if the 868 * user mounts the external storage on a computer or removes it. See the 869 * APIs on {@link android.os.Environment} for information in the storage state. 870 * <li>There is no security enforced with these files. For example, any application 871 * holding {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} can write to 872 * these files. 873 * </ul> 874 * 875 * <p>Starting in {@link android.os.Build.VERSION_CODES#KITKAT}, no permissions 876 * are required to read or write to the returned path; it's always 877 * accessible to the calling app. This only applies to paths generated for 878 * package name of the calling application. To access paths belonging 879 * to other packages, {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} 880 * and/or {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} are required. 881 * 882 * <p>On devices with multiple users (as described by {@link UserManager}), 883 * each user has their own isolated external storage. Applications only 884 * have access to the external storage for the user they're running as.</p> 885 * 886 * @return The path of the directory holding application cache files 887 * on external storage. Returns null if external storage is not currently 888 * mounted so it could not ensure the path exists; you will need to call 889 * this method again when it is available. 890 * 891 * @see #getCacheDir 892 */ 893 @Nullable 894 public abstract File getExternalCacheDir(); 895 896 /** 897 * Returns absolute paths to application-specific directories on all 898 * external storage devices where the application can place cache files it 899 * owns. These files are internal to the application, and not typically 900 * visible to the user as media. 901 * <p> 902 * This is like {@link #getCacheDir()} in that these files will be deleted when 903 * the application is uninstalled, however there are some important differences: 904 * <ul> 905 * <li>External files are not always available: they will disappear if the 906 * user mounts the external storage on a computer or removes it. 907 * <li>There is no security enforced with these files. 908 * </ul> 909 * <p> 910 * External storage devices returned here are considered a permanent part of 911 * the device, including both emulated external storage and physical media 912 * slots, such as SD cards in a battery compartment. The returned paths do 913 * not include transient devices, such as USB flash drives. 914 * <p> 915 * An application may store data on any or all of the returned devices. For 916 * example, an app may choose to store large files on the device with the 917 * most available space, as measured by {@link StatFs}. 918 * <p> 919 * No permissions are required to read or write to the returned paths; they 920 * are always accessible to the calling app. Write access outside of these 921 * paths on secondary external storage devices is not available. 922 * <p> 923 * The first path returned is the same as {@link #getExternalCacheDir()}. 924 * Returned paths may be {@code null} if a storage device is unavailable. 925 * 926 * @see #getExternalCacheDir() 927 * @see Environment#getExternalStorageState(File) 928 */ 929 public abstract File[] getExternalCacheDirs(); 930 931 /** 932 * Returns an array of strings naming the private files associated with 933 * this Context's application package. 934 * 935 * @return Array of strings naming the private files. 936 * 937 * @see #openFileInput 938 * @see #openFileOutput 939 * @see #deleteFile 940 */ 941 public abstract String[] fileList(); 942 943 /** 944 * Retrieve, creating if needed, a new directory in which the application 945 * can place its own custom data files. You can use the returned File 946 * object to create and access files in this directory. Note that files 947 * created through a File object will only be accessible by your own 948 * application; you can only set the mode of the entire directory, not 949 * of individual files. 950 * 951 * @param name Name of the directory to retrieve. This is a directory 952 * that is created as part of your application data. 953 * @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the 954 * default operation, {@link #MODE_WORLD_READABLE} and 955 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 956 * 957 * @return A {@link File} object for the requested directory. The directory 958 * will have been created if it does not already exist. 959 * 960 * @see #openFileOutput(String, int) 961 */ 962 public abstract File getDir(String name, int mode); 963 964 /** 965 * Open a new private SQLiteDatabase associated with this Context's 966 * application package. Create the database file if it doesn't exist. 967 * 968 * @param name The name (unique in the application package) of the database. 969 * @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the 970 * default operation, {@link #MODE_WORLD_READABLE} 971 * and {@link #MODE_WORLD_WRITEABLE} to control permissions. 972 * Use {@link #MODE_ENABLE_WRITE_AHEAD_LOGGING} to enable write-ahead logging by default. 973 * @param factory An optional factory class that is called to instantiate a 974 * cursor when query is called. 975 * 976 * @return The contents of a newly created database with the given name. 977 * @throws android.database.sqlite.SQLiteException if the database file could not be opened. 978 * 979 * @see #MODE_PRIVATE 980 * @see #MODE_WORLD_READABLE 981 * @see #MODE_WORLD_WRITEABLE 982 * @see #MODE_ENABLE_WRITE_AHEAD_LOGGING 983 * @see #deleteDatabase 984 */ 985 public abstract SQLiteDatabase openOrCreateDatabase(String name, 986 int mode, CursorFactory factory); 987 988 /** 989 * Open a new private SQLiteDatabase associated with this Context's 990 * application package. Creates the database file if it doesn't exist. 991 * 992 * <p>Accepts input param: a concrete instance of {@link DatabaseErrorHandler} to be 993 * used to handle corruption when sqlite reports database corruption.</p> 994 * 995 * @param name The name (unique in the application package) of the database. 996 * @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the 997 * default operation, {@link #MODE_WORLD_READABLE} 998 * and {@link #MODE_WORLD_WRITEABLE} to control permissions. 999 * Use {@link #MODE_ENABLE_WRITE_AHEAD_LOGGING} to enable write-ahead logging by default. 1000 * @param factory An optional factory class that is called to instantiate a 1001 * cursor when query is called. 1002 * @param errorHandler the {@link DatabaseErrorHandler} to be used when sqlite reports database 1003 * corruption. if null, {@link android.database.DefaultDatabaseErrorHandler} is assumed. 1004 * @return The contents of a newly created database with the given name. 1005 * @throws android.database.sqlite.SQLiteException if the database file could not be opened. 1006 * 1007 * @see #MODE_PRIVATE 1008 * @see #MODE_WORLD_READABLE 1009 * @see #MODE_WORLD_WRITEABLE 1010 * @see #MODE_ENABLE_WRITE_AHEAD_LOGGING 1011 * @see #deleteDatabase 1012 */ 1013 public abstract SQLiteDatabase openOrCreateDatabase(String name, 1014 int mode, CursorFactory factory, 1015 @Nullable DatabaseErrorHandler errorHandler); 1016 1017 /** 1018 * Delete an existing private SQLiteDatabase associated with this Context's 1019 * application package. 1020 * 1021 * @param name The name (unique in the application package) of the 1022 * database. 1023 * 1024 * @return {@code true} if the database was successfully deleted; else {@code false}. 1025 * 1026 * @see #openOrCreateDatabase 1027 */ 1028 public abstract boolean deleteDatabase(String name); 1029 1030 /** 1031 * Returns the absolute path on the filesystem where a database created with 1032 * {@link #openOrCreateDatabase} is stored. 1033 * 1034 * @param name The name of the database for which you would like to get 1035 * its path. 1036 * 1037 * @return An absolute path to the given database. 1038 * 1039 * @see #openOrCreateDatabase 1040 */ 1041 public abstract File getDatabasePath(String name); 1042 1043 /** 1044 * Returns an array of strings naming the private databases associated with 1045 * this Context's application package. 1046 * 1047 * @return Array of strings naming the private databases. 1048 * 1049 * @see #openOrCreateDatabase 1050 * @see #deleteDatabase 1051 */ 1052 public abstract String[] databaseList(); 1053 1054 /** 1055 * @deprecated Use {@link android.app.WallpaperManager#getDrawable 1056 * WallpaperManager.get()} instead. 1057 */ 1058 @Deprecated 1059 public abstract Drawable getWallpaper(); 1060 1061 /** 1062 * @deprecated Use {@link android.app.WallpaperManager#peekDrawable 1063 * WallpaperManager.peek()} instead. 1064 */ 1065 @Deprecated 1066 public abstract Drawable peekWallpaper(); 1067 1068 /** 1069 * @deprecated Use {@link android.app.WallpaperManager#getDesiredMinimumWidth() 1070 * WallpaperManager.getDesiredMinimumWidth()} instead. 1071 */ 1072 @Deprecated 1073 public abstract int getWallpaperDesiredMinimumWidth(); 1074 1075 /** 1076 * @deprecated Use {@link android.app.WallpaperManager#getDesiredMinimumHeight() 1077 * WallpaperManager.getDesiredMinimumHeight()} instead. 1078 */ 1079 @Deprecated 1080 public abstract int getWallpaperDesiredMinimumHeight(); 1081 1082 /** 1083 * @deprecated Use {@link android.app.WallpaperManager#setBitmap(Bitmap) 1084 * WallpaperManager.set()} instead. 1085 * <p>This method requires the caller to hold the permission 1086 * {@link android.Manifest.permission#SET_WALLPAPER}. 1087 */ 1088 @Deprecated 1089 public abstract void setWallpaper(Bitmap bitmap) throws IOException; 1090 1091 /** 1092 * @deprecated Use {@link android.app.WallpaperManager#setStream(InputStream) 1093 * WallpaperManager.set()} instead. 1094 * <p>This method requires the caller to hold the permission 1095 * {@link android.Manifest.permission#SET_WALLPAPER}. 1096 */ 1097 @Deprecated 1098 public abstract void setWallpaper(InputStream data) throws IOException; 1099 1100 /** 1101 * @deprecated Use {@link android.app.WallpaperManager#clear 1102 * WallpaperManager.clear()} instead. 1103 * <p>This method requires the caller to hold the permission 1104 * {@link android.Manifest.permission#SET_WALLPAPER}. 1105 */ 1106 @Deprecated 1107 public abstract void clearWallpaper() throws IOException; 1108 1109 /** 1110 * Same as {@link #startActivity(Intent, Bundle)} with no options 1111 * specified. 1112 * 1113 * @param intent The description of the activity to start. 1114 * 1115 * @throws ActivityNotFoundException 1116 * 1117 * @see #startActivity(Intent, Bundle) 1118 * @see PackageManager#resolveActivity 1119 */ 1120 public abstract void startActivity(Intent intent); 1121 1122 /** 1123 * Version of {@link #startActivity(Intent)} that allows you to specify the 1124 * user the activity will be started for. This is not available to applications 1125 * that are not pre-installed on the system image. Using it requires holding 1126 * the INTERACT_ACROSS_USERS_FULL permission. 1127 * @param intent The description of the activity to start. 1128 * @param user The UserHandle of the user to start this activity for. 1129 * @throws ActivityNotFoundException 1130 * @hide 1131 */ 1132 public void startActivityAsUser(Intent intent, UserHandle user) { 1133 throw new RuntimeException("Not implemented. Must override in a subclass."); 1134 } 1135 1136 /** 1137 * Launch a new activity. You will not receive any information about when 1138 * the activity exits. 1139 * 1140 * <p>Note that if this method is being called from outside of an 1141 * {@link android.app.Activity} Context, then the Intent must include 1142 * the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag. This is because, 1143 * without being started from an existing Activity, there is no existing 1144 * task in which to place the new activity and thus it needs to be placed 1145 * in its own separate task. 1146 * 1147 * <p>This method throws {@link ActivityNotFoundException} 1148 * if there was no Activity found to run the given Intent. 1149 * 1150 * @param intent The description of the activity to start. 1151 * @param options Additional options for how the Activity should be started. 1152 * May be null if there are no options. See {@link android.app.ActivityOptions} 1153 * for how to build the Bundle supplied here; there are no supported definitions 1154 * for building it manually. 1155 * 1156 * @throws ActivityNotFoundException 1157 * 1158 * @see #startActivity(Intent) 1159 * @see PackageManager#resolveActivity 1160 */ 1161 public abstract void startActivity(Intent intent, @Nullable Bundle options); 1162 1163 /** 1164 * Version of {@link #startActivity(Intent, Bundle)} that allows you to specify the 1165 * user the activity will be started for. This is not available to applications 1166 * that are not pre-installed on the system image. Using it requires holding 1167 * the INTERACT_ACROSS_USERS_FULL permission. 1168 * @param intent The description of the activity to start. 1169 * @param options Additional options for how the Activity should be started. 1170 * May be null if there are no options. See {@link android.app.ActivityOptions} 1171 * for how to build the Bundle supplied here; there are no supported definitions 1172 * for building it manually. 1173 * @param userId The UserHandle of the user to start this activity for. 1174 * @throws ActivityNotFoundException 1175 * @hide 1176 */ 1177 public void startActivityAsUser(Intent intent, @Nullable Bundle options, UserHandle userId) { 1178 throw new RuntimeException("Not implemented. Must override in a subclass."); 1179 } 1180 1181 /** 1182 * Same as {@link #startActivities(Intent[], Bundle)} with no options 1183 * specified. 1184 * 1185 * @param intents An array of Intents to be started. 1186 * 1187 * @throws ActivityNotFoundException 1188 * 1189 * @see #startActivities(Intent[], Bundle) 1190 * @see PackageManager#resolveActivity 1191 */ 1192 public abstract void startActivities(Intent[] intents); 1193 1194 /** 1195 * Launch multiple new activities. This is generally the same as calling 1196 * {@link #startActivity(Intent)} for the first Intent in the array, 1197 * that activity during its creation calling {@link #startActivity(Intent)} 1198 * for the second entry, etc. Note that unlike that approach, generally 1199 * none of the activities except the last in the array will be created 1200 * at this point, but rather will be created when the user first visits 1201 * them (due to pressing back from the activity on top). 1202 * 1203 * <p>This method throws {@link ActivityNotFoundException} 1204 * if there was no Activity found for <em>any</em> given Intent. In this 1205 * case the state of the activity stack is undefined (some Intents in the 1206 * list may be on it, some not), so you probably want to avoid such situations. 1207 * 1208 * @param intents An array of Intents to be started. 1209 * @param options Additional options for how the Activity should be started. 1210 * See {@link android.content.Context#startActivity(Intent, Bundle) 1211 * Context.startActivity(Intent, Bundle)} for more details. 1212 * 1213 * @throws ActivityNotFoundException 1214 * 1215 * @see #startActivities(Intent[]) 1216 * @see PackageManager#resolveActivity 1217 */ 1218 public abstract void startActivities(Intent[] intents, Bundle options); 1219 1220 /** 1221 * @hide 1222 * Launch multiple new activities. This is generally the same as calling 1223 * {@link #startActivity(Intent)} for the first Intent in the array, 1224 * that activity during its creation calling {@link #startActivity(Intent)} 1225 * for the second entry, etc. Note that unlike that approach, generally 1226 * none of the activities except the last in the array will be created 1227 * at this point, but rather will be created when the user first visits 1228 * them (due to pressing back from the activity on top). 1229 * 1230 * <p>This method throws {@link ActivityNotFoundException} 1231 * if there was no Activity found for <em>any</em> given Intent. In this 1232 * case the state of the activity stack is undefined (some Intents in the 1233 * list may be on it, some not), so you probably want to avoid such situations. 1234 * 1235 * @param intents An array of Intents to be started. 1236 * @param options Additional options for how the Activity should be started. 1237 * @param userHandle The user for whom to launch the activities 1238 * See {@link android.content.Context#startActivity(Intent, Bundle) 1239 * Context.startActivity(Intent, Bundle)} for more details. 1240 * 1241 * @throws ActivityNotFoundException 1242 * 1243 * @see #startActivities(Intent[]) 1244 * @see PackageManager#resolveActivity 1245 */ 1246 public void startActivitiesAsUser(Intent[] intents, Bundle options, UserHandle userHandle) { 1247 throw new RuntimeException("Not implemented. Must override in a subclass."); 1248 } 1249 1250 /** 1251 * Same as {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 1252 * with no options specified. 1253 * 1254 * @param intent The IntentSender to launch. 1255 * @param fillInIntent If non-null, this will be provided as the 1256 * intent parameter to {@link IntentSender#sendIntent}. 1257 * @param flagsMask Intent flags in the original IntentSender that you 1258 * would like to change. 1259 * @param flagsValues Desired values for any bits set in 1260 * <var>flagsMask</var> 1261 * @param extraFlags Always set to 0. 1262 * 1263 * @see #startActivity(Intent) 1264 * @see #startIntentSender(IntentSender, Intent, int, int, int, Bundle) 1265 */ 1266 public abstract void startIntentSender(IntentSender intent, 1267 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 1268 throws IntentSender.SendIntentException; 1269 1270 /** 1271 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 1272 * to start. If the IntentSender is for an activity, that activity will be started 1273 * as if you had called the regular {@link #startActivity(Intent)} 1274 * here; otherwise, its associated action will be executed (such as 1275 * sending a broadcast) as if you had called 1276 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 1277 * 1278 * @param intent The IntentSender to launch. 1279 * @param fillInIntent If non-null, this will be provided as the 1280 * intent parameter to {@link IntentSender#sendIntent}. 1281 * @param flagsMask Intent flags in the original IntentSender that you 1282 * would like to change. 1283 * @param flagsValues Desired values for any bits set in 1284 * <var>flagsMask</var> 1285 * @param extraFlags Always set to 0. 1286 * @param options Additional options for how the Activity should be started. 1287 * See {@link android.content.Context#startActivity(Intent, Bundle) 1288 * Context.startActivity(Intent, Bundle)} for more details. If options 1289 * have also been supplied by the IntentSender, options given here will 1290 * override any that conflict with those given by the IntentSender. 1291 * 1292 * @see #startActivity(Intent, Bundle) 1293 * @see #startIntentSender(IntentSender, Intent, int, int, int) 1294 */ 1295 public abstract void startIntentSender(IntentSender intent, 1296 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 1297 Bundle options) throws IntentSender.SendIntentException; 1298 1299 /** 1300 * Broadcast the given intent to all interested BroadcastReceivers. This 1301 * call is asynchronous; it returns immediately, and you will continue 1302 * executing while the receivers are run. No results are propagated from 1303 * receivers and receivers can not abort the broadcast. If you want 1304 * to allow receivers to propagate results or abort the broadcast, you must 1305 * send an ordered broadcast using 1306 * {@link #sendOrderedBroadcast(Intent, String)}. 1307 * 1308 * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. 1309 * 1310 * @param intent The Intent to broadcast; all receivers matching this 1311 * Intent will receive the broadcast. 1312 * 1313 * @see android.content.BroadcastReceiver 1314 * @see #registerReceiver 1315 * @see #sendBroadcast(Intent, String) 1316 * @see #sendOrderedBroadcast(Intent, String) 1317 * @see #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle) 1318 */ 1319 public abstract void sendBroadcast(Intent intent); 1320 1321 /** 1322 * Broadcast the given intent to all interested BroadcastReceivers, allowing 1323 * an optional required permission to be enforced. This 1324 * call is asynchronous; it returns immediately, and you will continue 1325 * executing while the receivers are run. No results are propagated from 1326 * receivers and receivers can not abort the broadcast. If you want 1327 * to allow receivers to propagate results or abort the broadcast, you must 1328 * send an ordered broadcast using 1329 * {@link #sendOrderedBroadcast(Intent, String)}. 1330 * 1331 * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. 1332 * 1333 * @param intent The Intent to broadcast; all receivers matching this 1334 * Intent will receive the broadcast. 1335 * @param receiverPermission (optional) String naming a permission that 1336 * a receiver must hold in order to receive your broadcast. 1337 * If null, no permission is required. 1338 * 1339 * @see android.content.BroadcastReceiver 1340 * @see #registerReceiver 1341 * @see #sendBroadcast(Intent) 1342 * @see #sendOrderedBroadcast(Intent, String) 1343 * @see #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle) 1344 */ 1345 public abstract void sendBroadcast(Intent intent, 1346 @Nullable String receiverPermission); 1347 1348 /** 1349 * Like {@link #sendBroadcast(Intent, String)}, but also allows specification 1350 * of an associated app op as per {@link android.app.AppOpsManager}. 1351 * @hide 1352 */ 1353 public abstract void sendBroadcast(Intent intent, 1354 String receiverPermission, int appOp); 1355 1356 /** 1357 * Broadcast the given intent to all interested BroadcastReceivers, delivering 1358 * them one at a time to allow more preferred receivers to consume the 1359 * broadcast before it is delivered to less preferred receivers. This 1360 * call is asynchronous; it returns immediately, and you will continue 1361 * executing while the receivers are run. 1362 * 1363 * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. 1364 * 1365 * @param intent The Intent to broadcast; all receivers matching this 1366 * Intent will receive the broadcast. 1367 * @param receiverPermission (optional) String naming a permissions that 1368 * a receiver must hold in order to receive your broadcast. 1369 * If null, no permission is required. 1370 * 1371 * @see android.content.BroadcastReceiver 1372 * @see #registerReceiver 1373 * @see #sendBroadcast(Intent) 1374 * @see #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle) 1375 */ 1376 public abstract void sendOrderedBroadcast(Intent intent, 1377 @Nullable String receiverPermission); 1378 1379 /** 1380 * Version of {@link #sendBroadcast(Intent)} that allows you to 1381 * receive data back from the broadcast. This is accomplished by 1382 * supplying your own BroadcastReceiver when calling, which will be 1383 * treated as a final receiver at the end of the broadcast -- its 1384 * {@link BroadcastReceiver#onReceive} method will be called with 1385 * the result values collected from the other receivers. The broadcast will 1386 * be serialized in the same way as calling 1387 * {@link #sendOrderedBroadcast(Intent, String)}. 1388 * 1389 * <p>Like {@link #sendBroadcast(Intent)}, this method is 1390 * asynchronous; it will return before 1391 * resultReceiver.onReceive() is called. 1392 * 1393 * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. 1394 * 1395 * @param intent The Intent to broadcast; all receivers matching this 1396 * Intent will receive the broadcast. 1397 * @param receiverPermission String naming a permissions that 1398 * a receiver must hold in order to receive your broadcast. 1399 * If null, no permission is required. 1400 * @param resultReceiver Your own BroadcastReceiver to treat as the final 1401 * receiver of the broadcast. 1402 * @param scheduler A custom Handler with which to schedule the 1403 * resultReceiver callback; if null it will be 1404 * scheduled in the Context's main thread. 1405 * @param initialCode An initial value for the result code. Often 1406 * Activity.RESULT_OK. 1407 * @param initialData An initial value for the result data. Often 1408 * null. 1409 * @param initialExtras An initial value for the result extras. Often 1410 * null. 1411 * 1412 * @see #sendBroadcast(Intent) 1413 * @see #sendBroadcast(Intent, String) 1414 * @see #sendOrderedBroadcast(Intent, String) 1415 * @see #sendStickyBroadcast(Intent) 1416 * @see #sendStickyOrderedBroadcast(Intent, BroadcastReceiver, Handler, int, String, Bundle) 1417 * @see android.content.BroadcastReceiver 1418 * @see #registerReceiver 1419 * @see android.app.Activity#RESULT_OK 1420 */ 1421 public abstract void sendOrderedBroadcast(@NonNull Intent intent, 1422 @Nullable String receiverPermission, BroadcastReceiver resultReceiver, 1423 @Nullable Handler scheduler, int initialCode, @Nullable String initialData, 1424 @Nullable Bundle initialExtras); 1425 1426 /** 1427 * Like {@link #sendOrderedBroadcast(Intent, String, BroadcastReceiver, android.os.Handler, 1428 * int, String, android.os.Bundle)}, but also allows specification 1429 * of an associated app op as per {@link android.app.AppOpsManager}. 1430 * @hide 1431 */ 1432 public abstract void sendOrderedBroadcast(Intent intent, 1433 String receiverPermission, int appOp, BroadcastReceiver resultReceiver, 1434 Handler scheduler, int initialCode, String initialData, 1435 Bundle initialExtras); 1436 1437 /** 1438 * Version of {@link #sendBroadcast(Intent)} that allows you to specify the 1439 * user the broadcast will be sent to. This is not available to applications 1440 * that are not pre-installed on the system image. Using it requires holding 1441 * the INTERACT_ACROSS_USERS permission. 1442 * @param intent The intent to broadcast 1443 * @param user UserHandle to send the intent to. 1444 * @see #sendBroadcast(Intent) 1445 */ 1446 public abstract void sendBroadcastAsUser(Intent intent, UserHandle user); 1447 1448 /** 1449 * Version of {@link #sendBroadcast(Intent, String)} that allows you to specify the 1450 * user the broadcast will be sent to. This is not available to applications 1451 * that are not pre-installed on the system image. Using it requires holding 1452 * the INTERACT_ACROSS_USERS permission. 1453 * 1454 * @param intent The Intent to broadcast; all receivers matching this 1455 * Intent will receive the broadcast. 1456 * @param user UserHandle to send the intent to. 1457 * @param receiverPermission (optional) String naming a permission that 1458 * a receiver must hold in order to receive your broadcast. 1459 * If null, no permission is required. 1460 * 1461 * @see #sendBroadcast(Intent, String) 1462 */ 1463 public abstract void sendBroadcastAsUser(Intent intent, UserHandle user, 1464 @Nullable String receiverPermission); 1465 1466 /** 1467 * Version of 1468 * {@link #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)} 1469 * that allows you to specify the 1470 * user the broadcast will be sent to. This is not available to applications 1471 * that are not pre-installed on the system image. Using it requires holding 1472 * the INTERACT_ACROSS_USERS permission. 1473 * 1474 * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. 1475 * 1476 * @param intent The Intent to broadcast; all receivers matching this 1477 * Intent will receive the broadcast. 1478 * @param user UserHandle to send the intent to. 1479 * @param receiverPermission String naming a permissions that 1480 * a receiver must hold in order to receive your broadcast. 1481 * If null, no permission is required. 1482 * @param resultReceiver Your own BroadcastReceiver to treat as the final 1483 * receiver of the broadcast. 1484 * @param scheduler A custom Handler with which to schedule the 1485 * resultReceiver callback; if null it will be 1486 * scheduled in the Context's main thread. 1487 * @param initialCode An initial value for the result code. Often 1488 * Activity.RESULT_OK. 1489 * @param initialData An initial value for the result data. Often 1490 * null. 1491 * @param initialExtras An initial value for the result extras. Often 1492 * null. 1493 * 1494 * @see #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle) 1495 */ 1496 public abstract void sendOrderedBroadcastAsUser(Intent intent, UserHandle user, 1497 @Nullable String receiverPermission, BroadcastReceiver resultReceiver, 1498 @Nullable Handler scheduler, int initialCode, @Nullable String initialData, 1499 @Nullable Bundle initialExtras); 1500 1501 /** 1502 * Perform a {@link #sendBroadcast(Intent)} that is "sticky," meaning the 1503 * Intent you are sending stays around after the broadcast is complete, 1504 * so that others can quickly retrieve that data through the return 1505 * value of {@link #registerReceiver(BroadcastReceiver, IntentFilter)}. In 1506 * all other ways, this behaves the same as 1507 * {@link #sendBroadcast(Intent)}. 1508 * 1509 * <p>You must hold the {@link android.Manifest.permission#BROADCAST_STICKY} 1510 * permission in order to use this API. If you do not hold that 1511 * permission, {@link SecurityException} will be thrown. 1512 * 1513 * @param intent The Intent to broadcast; all receivers matching this 1514 * Intent will receive the broadcast, and the Intent will be held to 1515 * be re-broadcast to future receivers. 1516 * 1517 * @see #sendBroadcast(Intent) 1518 * @see #sendStickyOrderedBroadcast(Intent, BroadcastReceiver, Handler, int, String, Bundle) 1519 */ 1520 public abstract void sendStickyBroadcast(Intent intent); 1521 1522 /** 1523 * Version of {@link #sendStickyBroadcast} that allows you to 1524 * receive data back from the broadcast. This is accomplished by 1525 * supplying your own BroadcastReceiver when calling, which will be 1526 * treated as a final receiver at the end of the broadcast -- its 1527 * {@link BroadcastReceiver#onReceive} method will be called with 1528 * the result values collected from the other receivers. The broadcast will 1529 * be serialized in the same way as calling 1530 * {@link #sendOrderedBroadcast(Intent, String)}. 1531 * 1532 * <p>Like {@link #sendBroadcast(Intent)}, this method is 1533 * asynchronous; it will return before 1534 * resultReceiver.onReceive() is called. Note that the sticky data 1535 * stored is only the data you initially supply to the broadcast, not 1536 * the result of any changes made by the receivers. 1537 * 1538 * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. 1539 * 1540 * @param intent The Intent to broadcast; all receivers matching this 1541 * Intent will receive the broadcast. 1542 * @param resultReceiver Your own BroadcastReceiver to treat as the final 1543 * receiver of the broadcast. 1544 * @param scheduler A custom Handler with which to schedule the 1545 * resultReceiver callback; if null it will be 1546 * scheduled in the Context's main thread. 1547 * @param initialCode An initial value for the result code. Often 1548 * Activity.RESULT_OK. 1549 * @param initialData An initial value for the result data. Often 1550 * null. 1551 * @param initialExtras An initial value for the result extras. Often 1552 * null. 1553 * 1554 * @see #sendBroadcast(Intent) 1555 * @see #sendBroadcast(Intent, String) 1556 * @see #sendOrderedBroadcast(Intent, String) 1557 * @see #sendStickyBroadcast(Intent) 1558 * @see android.content.BroadcastReceiver 1559 * @see #registerReceiver 1560 * @see android.app.Activity#RESULT_OK 1561 */ 1562 public abstract void sendStickyOrderedBroadcast(Intent intent, 1563 BroadcastReceiver resultReceiver, 1564 @Nullable Handler scheduler, int initialCode, @Nullable String initialData, 1565 @Nullable Bundle initialExtras); 1566 1567 /** 1568 * Remove the data previously sent with {@link #sendStickyBroadcast}, 1569 * so that it is as if the sticky broadcast had never happened. 1570 * 1571 * <p>You must hold the {@link android.Manifest.permission#BROADCAST_STICKY} 1572 * permission in order to use this API. If you do not hold that 1573 * permission, {@link SecurityException} will be thrown. 1574 * 1575 * @param intent The Intent that was previously broadcast. 1576 * 1577 * @see #sendStickyBroadcast 1578 */ 1579 public abstract void removeStickyBroadcast(Intent intent); 1580 1581 /** 1582 * Version of {@link #sendStickyBroadcast(Intent)} that allows you to specify the 1583 * user the broadcast will be sent to. This is not available to applications 1584 * that are not pre-installed on the system image. Using it requires holding 1585 * the INTERACT_ACROSS_USERS permission. 1586 * 1587 * @param intent The Intent to broadcast; all receivers matching this 1588 * Intent will receive the broadcast, and the Intent will be held to 1589 * be re-broadcast to future receivers. 1590 * @param user UserHandle to send the intent to. 1591 * 1592 * @see #sendBroadcast(Intent) 1593 */ 1594 public abstract void sendStickyBroadcastAsUser(Intent intent, UserHandle user); 1595 1596 /** 1597 * Version of 1598 * {@link #sendStickyOrderedBroadcast(Intent, BroadcastReceiver, Handler, int, String, Bundle)} 1599 * that allows you to specify the 1600 * user the broadcast will be sent to. This is not available to applications 1601 * that are not pre-installed on the system image. Using it requires holding 1602 * the INTERACT_ACROSS_USERS permission. 1603 * 1604 * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. 1605 * 1606 * @param intent The Intent to broadcast; all receivers matching this 1607 * Intent will receive the broadcast. 1608 * @param user UserHandle to send the intent to. 1609 * @param resultReceiver Your own BroadcastReceiver to treat as the final 1610 * receiver of the broadcast. 1611 * @param scheduler A custom Handler with which to schedule the 1612 * resultReceiver callback; if null it will be 1613 * scheduled in the Context's main thread. 1614 * @param initialCode An initial value for the result code. Often 1615 * Activity.RESULT_OK. 1616 * @param initialData An initial value for the result data. Often 1617 * null. 1618 * @param initialExtras An initial value for the result extras. Often 1619 * null. 1620 * 1621 * @see #sendStickyOrderedBroadcast(Intent, BroadcastReceiver, Handler, int, String, Bundle) 1622 */ 1623 public abstract void sendStickyOrderedBroadcastAsUser(Intent intent, 1624 UserHandle user, BroadcastReceiver resultReceiver, 1625 @Nullable Handler scheduler, int initialCode, @Nullable String initialData, 1626 @Nullable Bundle initialExtras); 1627 1628 /** 1629 * Version of {@link #removeStickyBroadcast(Intent)} that allows you to specify the 1630 * user the broadcast will be sent to. This is not available to applications 1631 * that are not pre-installed on the system image. Using it requires holding 1632 * the INTERACT_ACROSS_USERS permission. 1633 * 1634 * <p>You must hold the {@link android.Manifest.permission#BROADCAST_STICKY} 1635 * permission in order to use this API. If you do not hold that 1636 * permission, {@link SecurityException} will be thrown. 1637 * 1638 * @param intent The Intent that was previously broadcast. 1639 * @param user UserHandle to remove the sticky broadcast from. 1640 * 1641 * @see #sendStickyBroadcastAsUser 1642 */ 1643 public abstract void removeStickyBroadcastAsUser(Intent intent, UserHandle user); 1644 1645 /** 1646 * Register a BroadcastReceiver to be run in the main activity thread. The 1647 * <var>receiver</var> will be called with any broadcast Intent that 1648 * matches <var>filter</var>, in the main application thread. 1649 * 1650 * <p>The system may broadcast Intents that are "sticky" -- these stay 1651 * around after the broadcast as finished, to be sent to any later 1652 * registrations. If your IntentFilter matches one of these sticky 1653 * Intents, that Intent will be returned by this function 1654 * <strong>and</strong> sent to your <var>receiver</var> as if it had just 1655 * been broadcast. 1656 * 1657 * <p>There may be multiple sticky Intents that match <var>filter</var>, 1658 * in which case each of these will be sent to <var>receiver</var>. In 1659 * this case, only one of these can be returned directly by the function; 1660 * which of these that is returned is arbitrarily decided by the system. 1661 * 1662 * <p>If you know the Intent your are registering for is sticky, you can 1663 * supply null for your <var>receiver</var>. In this case, no receiver is 1664 * registered -- the function simply returns the sticky Intent that 1665 * matches <var>filter</var>. In the case of multiple matches, the same 1666 * rules as described above apply. 1667 * 1668 * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. 1669 * 1670 * <p>As of {@link android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH}, receivers 1671 * registered with this method will correctly respect the 1672 * {@link Intent#setPackage(String)} specified for an Intent being broadcast. 1673 * Prior to that, it would be ignored and delivered to all matching registered 1674 * receivers. Be careful if using this for security.</p> 1675 * 1676 * <p class="note">Note: this method <em>cannot be called from a 1677 * {@link BroadcastReceiver} component;</em> that is, from a BroadcastReceiver 1678 * that is declared in an application's manifest. It is okay, however, to call 1679 * this method from another BroadcastReceiver that has itself been registered 1680 * at run time with {@link #registerReceiver}, since the lifetime of such a 1681 * registered BroadcastReceiver is tied to the object that registered it.</p> 1682 * 1683 * @param receiver The BroadcastReceiver to handle the broadcast. 1684 * @param filter Selects the Intent broadcasts to be received. 1685 * 1686 * @return The first sticky intent found that matches <var>filter</var>, 1687 * or null if there are none. 1688 * 1689 * @see #registerReceiver(BroadcastReceiver, IntentFilter, String, Handler) 1690 * @see #sendBroadcast 1691 * @see #unregisterReceiver 1692 */ 1693 @Nullable 1694 public abstract Intent registerReceiver(@Nullable BroadcastReceiver receiver, 1695 IntentFilter filter); 1696 1697 /** 1698 * Register to receive intent broadcasts, to run in the context of 1699 * <var>scheduler</var>. See 1700 * {@link #registerReceiver(BroadcastReceiver, IntentFilter)} for more 1701 * information. This allows you to enforce permissions on who can 1702 * broadcast intents to your receiver, or have the receiver run in 1703 * a different thread than the main application thread. 1704 * 1705 * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. 1706 * 1707 * <p>As of {@link android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH}, receivers 1708 * registered with this method will correctly respect the 1709 * {@link Intent#setPackage(String)} specified for an Intent being broadcast. 1710 * Prior to that, it would be ignored and delivered to all matching registered 1711 * receivers. Be careful if using this for security.</p> 1712 * 1713 * @param receiver The BroadcastReceiver to handle the broadcast. 1714 * @param filter Selects the Intent broadcasts to be received. 1715 * @param broadcastPermission String naming a permissions that a 1716 * broadcaster must hold in order to send an Intent to you. If null, 1717 * no permission is required. 1718 * @param scheduler Handler identifying the thread that will receive 1719 * the Intent. If null, the main thread of the process will be used. 1720 * 1721 * @return The first sticky intent found that matches <var>filter</var>, 1722 * or null if there are none. 1723 * 1724 * @see #registerReceiver(BroadcastReceiver, IntentFilter) 1725 * @see #sendBroadcast 1726 * @see #unregisterReceiver 1727 */ 1728 @Nullable 1729 public abstract Intent registerReceiver(BroadcastReceiver receiver, 1730 IntentFilter filter, @Nullable String broadcastPermission, 1731 @Nullable Handler scheduler); 1732 1733 /** 1734 * @hide 1735 * Same as {@link #registerReceiver(BroadcastReceiver, IntentFilter, String, Handler) 1736 * but for a specific user. This receiver will receiver broadcasts that 1737 * are sent to the requested user. It 1738 * requires holding the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} 1739 * permission. 1740 * 1741 * @param receiver The BroadcastReceiver to handle the broadcast. 1742 * @param user UserHandle to send the intent to. 1743 * @param filter Selects the Intent broadcasts to be received. 1744 * @param broadcastPermission String naming a permissions that a 1745 * broadcaster must hold in order to send an Intent to you. If null, 1746 * no permission is required. 1747 * @param scheduler Handler identifying the thread that will receive 1748 * the Intent. If null, the main thread of the process will be used. 1749 * 1750 * @return The first sticky intent found that matches <var>filter</var>, 1751 * or null if there are none. 1752 * 1753 * @see #registerReceiver(BroadcastReceiver, IntentFilter, String, Handler 1754 * @see #sendBroadcast 1755 * @see #unregisterReceiver 1756 */ 1757 @Nullable 1758 public abstract Intent registerReceiverAsUser(BroadcastReceiver receiver, 1759 UserHandle user, IntentFilter filter, @Nullable String broadcastPermission, 1760 @Nullable Handler scheduler); 1761 1762 /** 1763 * Unregister a previously registered BroadcastReceiver. <em>All</em> 1764 * filters that have been registered for this BroadcastReceiver will be 1765 * removed. 1766 * 1767 * @param receiver The BroadcastReceiver to unregister. 1768 * 1769 * @see #registerReceiver 1770 */ 1771 public abstract void unregisterReceiver(BroadcastReceiver receiver); 1772 1773 /** 1774 * Request that a given application service be started. The Intent 1775 * should contain either contain the complete class name of a specific service 1776 * implementation to start or a specific package name to target. If the 1777 * Intent is less specified, it log a warning about this and which of the 1778 * multiple matching services it finds and uses will be undefined. If this service 1779 * is not already running, it will be instantiated and started (creating a 1780 * process for it if needed); if it is running then it remains running. 1781 * 1782 * <p>Every call to this method will result in a corresponding call to 1783 * the target service's {@link android.app.Service#onStartCommand} method, 1784 * with the <var>intent</var> given here. This provides a convenient way 1785 * to submit jobs to a service without having to bind and call on to its 1786 * interface. 1787 * 1788 * <p>Using startService() overrides the default service lifetime that is 1789 * managed by {@link #bindService}: it requires the service to remain 1790 * running until {@link #stopService} is called, regardless of whether 1791 * any clients are connected to it. Note that calls to startService() 1792 * are not nesting: no matter how many times you call startService(), 1793 * a single call to {@link #stopService} will stop it. 1794 * 1795 * <p>The system attempts to keep running services around as much as 1796 * possible. The only time they should be stopped is if the current 1797 * foreground application is using so many resources that the service needs 1798 * to be killed. If any errors happen in the service's process, it will 1799 * automatically be restarted. 1800 * 1801 * <p>This function will throw {@link SecurityException} if you do not 1802 * have permission to start the given service. 1803 * 1804 * @param service Identifies the service to be started. The Intent must be either 1805 * fully explicit (supplying a component name) or specify a specific package 1806 * name it is targetted to. Additional values 1807 * may be included in the Intent extras to supply arguments along with 1808 * this specific start call. 1809 * 1810 * @return If the service is being started or is already running, the 1811 * {@link ComponentName} of the actual service that was started is 1812 * returned; else if the service does not exist null is returned. 1813 * 1814 * @throws SecurityException 1815 * 1816 * @see #stopService 1817 * @see #bindService 1818 */ 1819 @Nullable 1820 public abstract ComponentName startService(Intent service); 1821 1822 /** 1823 * Request that a given application service be stopped. If the service is 1824 * not running, nothing happens. Otherwise it is stopped. Note that calls 1825 * to startService() are not counted -- this stops the service no matter 1826 * how many times it was started. 1827 * 1828 * <p>Note that if a stopped service still has {@link ServiceConnection} 1829 * objects bound to it with the {@link #BIND_AUTO_CREATE} set, it will 1830 * not be destroyed until all of these bindings are removed. See 1831 * the {@link android.app.Service} documentation for more details on a 1832 * service's lifecycle. 1833 * 1834 * <p>This function will throw {@link SecurityException} if you do not 1835 * have permission to stop the given service. 1836 * 1837 * @param service Description of the service to be stopped. The Intent must be either 1838 * fully explicit (supplying a component name) or specify a specific package 1839 * name it is targetted to. 1840 * 1841 * @return If there is a service matching the given Intent that is already 1842 * running, then it is stopped and {@code true} is returned; else {@code false} is returned. 1843 * 1844 * @throws SecurityException 1845 * 1846 * @see #startService 1847 */ 1848 public abstract boolean stopService(Intent service); 1849 1850 /** 1851 * @hide like {@link #startService(Intent)} but for a specific user. 1852 */ 1853 public abstract ComponentName startServiceAsUser(Intent service, UserHandle user); 1854 1855 /** 1856 * @hide like {@link #stopService(Intent)} but for a specific user. 1857 */ 1858 public abstract boolean stopServiceAsUser(Intent service, UserHandle user); 1859 1860 /** 1861 * Connect to an application service, creating it if needed. This defines 1862 * a dependency between your application and the service. The given 1863 * <var>conn</var> will receive the service object when it is created and be 1864 * told if it dies and restarts. The service will be considered required 1865 * by the system only for as long as the calling context exists. For 1866 * example, if this Context is an Activity that is stopped, the service will 1867 * not be required to continue running until the Activity is resumed. 1868 * 1869 * <p>This function will throw {@link SecurityException} if you do not 1870 * have permission to bind to the given service. 1871 * 1872 * <p class="note">Note: this method <em>can not be called from a 1873 * {@link BroadcastReceiver} component</em>. A pattern you can use to 1874 * communicate from a BroadcastReceiver to a Service is to call 1875 * {@link #startService} with the arguments containing the command to be 1876 * sent, with the service calling its 1877 * {@link android.app.Service#stopSelf(int)} method when done executing 1878 * that command. See the API demo App/Service/Service Start Arguments 1879 * Controller for an illustration of this. It is okay, however, to use 1880 * this method from a BroadcastReceiver that has been registered with 1881 * {@link #registerReceiver}, since the lifetime of this BroadcastReceiver 1882 * is tied to another object (the one that registered it).</p> 1883 * 1884 * @param service Identifies the service to connect to. The Intent may 1885 * specify either an explicit component name, or a logical 1886 * description (action, category, etc) to match an 1887 * {@link IntentFilter} published by a service. 1888 * @param conn Receives information as the service is started and stopped. 1889 * This must be a valid ServiceConnection object; it must not be null. 1890 * @param flags Operation options for the binding. May be 0, 1891 * {@link #BIND_AUTO_CREATE}, {@link #BIND_DEBUG_UNBIND}, 1892 * {@link #BIND_NOT_FOREGROUND}, {@link #BIND_ABOVE_CLIENT}, 1893 * {@link #BIND_ALLOW_OOM_MANAGEMENT}, or 1894 * {@link #BIND_WAIVE_PRIORITY}. 1895 * @return If you have successfully bound to the service, {@code true} is returned; 1896 * {@code false} is returned if the connection is not made so you will not 1897 * receive the service object. 1898 * 1899 * @throws SecurityException 1900 * 1901 * @see #unbindService 1902 * @see #startService 1903 * @see #BIND_AUTO_CREATE 1904 * @see #BIND_DEBUG_UNBIND 1905 * @see #BIND_NOT_FOREGROUND 1906 */ 1907 public abstract boolean bindService(Intent service, @NonNull ServiceConnection conn, 1908 @BindServiceFlags int flags); 1909 1910 /** 1911 * Same as {@link #bindService(Intent, ServiceConnection, int)}, but with an explicit userHandle 1912 * argument for use by system server and other multi-user aware code. 1913 * @hide 1914 */ 1915 public boolean bindServiceAsUser(Intent service, ServiceConnection conn, int flags, UserHandle user) { 1916 throw new RuntimeException("Not implemented. Must override in a subclass."); 1917 } 1918 1919 /** 1920 * Disconnect from an application service. You will no longer receive 1921 * calls as the service is restarted, and the service is now allowed to 1922 * stop at any time. 1923 * 1924 * @param conn The connection interface previously supplied to 1925 * bindService(). This parameter must not be null. 1926 * 1927 * @see #bindService 1928 */ 1929 public abstract void unbindService(@NonNull ServiceConnection conn); 1930 1931 /** 1932 * Start executing an {@link android.app.Instrumentation} class. The given 1933 * Instrumentation component will be run by killing its target application 1934 * (if currently running), starting the target process, instantiating the 1935 * instrumentation component, and then letting it drive the application. 1936 * 1937 * <p>This function is not synchronous -- it returns as soon as the 1938 * instrumentation has started and while it is running. 1939 * 1940 * <p>Instrumentation is normally only allowed to run against a package 1941 * that is either unsigned or signed with a signature that the 1942 * the instrumentation package is also signed with (ensuring the target 1943 * trusts the instrumentation). 1944 * 1945 * @param className Name of the Instrumentation component to be run. 1946 * @param profileFile Optional path to write profiling data as the 1947 * instrumentation runs, or null for no profiling. 1948 * @param arguments Additional optional arguments to pass to the 1949 * instrumentation, or null. 1950 * 1951 * @return {@code true} if the instrumentation was successfully started, 1952 * else {@code false} if it could not be found. 1953 */ 1954 public abstract boolean startInstrumentation(@NonNull ComponentName className, 1955 @Nullable String profileFile, @Nullable Bundle arguments); 1956 1957 /** @hide */ 1958 @StringDef({ 1959 POWER_SERVICE, 1960 WINDOW_SERVICE, 1961 LAYOUT_INFLATER_SERVICE, 1962 ACCOUNT_SERVICE, 1963 ACTIVITY_SERVICE, 1964 ALARM_SERVICE, 1965 NOTIFICATION_SERVICE, 1966 ACCESSIBILITY_SERVICE, 1967 CAPTIONING_SERVICE, 1968 KEYGUARD_SERVICE, 1969 LOCATION_SERVICE, 1970 //@hide: COUNTRY_DETECTOR, 1971 SEARCH_SERVICE, 1972 SENSOR_SERVICE, 1973 STORAGE_SERVICE, 1974 WALLPAPER_SERVICE, 1975 VIBRATOR_SERVICE, 1976 //@hide: STATUS_BAR_SERVICE, 1977 CONNECTIVITY_SERVICE, 1978 //@hide: UPDATE_LOCK_SERVICE, 1979 //@hide: NETWORKMANAGEMENT_SERVICE, 1980 //@hide: NETWORK_STATS_SERVICE, 1981 //@hide: NETWORK_POLICY_SERVICE, 1982 WIFI_SERVICE, 1983 WIFI_HOTSPOT_SERVICE, 1984 WIFI_P2P_SERVICE, 1985 NSD_SERVICE, 1986 AUDIO_SERVICE, 1987 MEDIA_ROUTER_SERVICE, 1988 TELEPHONY_SERVICE, 1989 CLIPBOARD_SERVICE, 1990 INPUT_METHOD_SERVICE, 1991 TEXT_SERVICES_MANAGER_SERVICE, 1992 //@hide: APPWIDGET_SERVICE, 1993 //@hide: BACKUP_SERVICE, 1994 DROPBOX_SERVICE, 1995 DEVICE_POLICY_SERVICE, 1996 UI_MODE_SERVICE, 1997 DOWNLOAD_SERVICE, 1998 NFC_SERVICE, 1999 BLUETOOTH_SERVICE, 2000 //@hide: SIP_SERVICE, 2001 USB_SERVICE, 2002 LAUNCHER_APPS_SERVICE, 2003 //@hide: SERIAL_SERVICE, 2004 INPUT_SERVICE, 2005 DISPLAY_SERVICE, 2006 //@hide: SCHEDULING_POLICY_SERVICE, 2007 USER_SERVICE, 2008 //@hide: APP_OPS_SERVICE 2009 CAMERA_SERVICE, 2010 PRINT_SERVICE, 2011 MEDIA_SESSION_SERVICE, 2012 }) 2013 @Retention(RetentionPolicy.SOURCE) 2014 public @interface ServiceName {} 2015 2016 /** 2017 * Return the handle to a system-level service by name. The class of the 2018 * returned object varies by the requested name. Currently available names 2019 * are: 2020 * 2021 * <dl> 2022 * <dt> {@link #WINDOW_SERVICE} ("window") 2023 * <dd> The top-level window manager in which you can place custom 2024 * windows. The returned object is a {@link android.view.WindowManager}. 2025 * <dt> {@link #LAYOUT_INFLATER_SERVICE} ("layout_inflater") 2026 * <dd> A {@link android.view.LayoutInflater} for inflating layout resources 2027 * in this context. 2028 * <dt> {@link #ACTIVITY_SERVICE} ("activity") 2029 * <dd> A {@link android.app.ActivityManager} for interacting with the 2030 * global activity state of the system. 2031 * <dt> {@link #POWER_SERVICE} ("power") 2032 * <dd> A {@link android.os.PowerManager} for controlling power 2033 * management. 2034 * <dt> {@link #ALARM_SERVICE} ("alarm") 2035 * <dd> A {@link android.app.AlarmManager} for receiving intents at the 2036 * time of your choosing. 2037 * <dt> {@link #NOTIFICATION_SERVICE} ("notification") 2038 * <dd> A {@link android.app.NotificationManager} for informing the user 2039 * of background events. 2040 * <dt> {@link #KEYGUARD_SERVICE} ("keyguard") 2041 * <dd> A {@link android.app.KeyguardManager} for controlling keyguard. 2042 * <dt> {@link #LOCATION_SERVICE} ("location") 2043 * <dd> A {@link android.location.LocationManager} for controlling location 2044 * (e.g., GPS) updates. 2045 * <dt> {@link #SEARCH_SERVICE} ("search") 2046 * <dd> A {@link android.app.SearchManager} for handling search. 2047 * <dt> {@link #VIBRATOR_SERVICE} ("vibrator") 2048 * <dd> A {@link android.os.Vibrator} for interacting with the vibrator 2049 * hardware. 2050 * <dt> {@link #CONNECTIVITY_SERVICE} ("connection") 2051 * <dd> A {@link android.net.ConnectivityManager ConnectivityManager} for 2052 * handling management of network connections. 2053 * <dt> {@link #WIFI_SERVICE} ("wifi") 2054 * <dd> A {@link android.net.wifi.WifiManager WifiManager} for management of 2055 * Wi-Fi connectivity. 2056 * <dt> {@link #INPUT_METHOD_SERVICE} ("input_method") 2057 * <dd> An {@link android.view.inputmethod.InputMethodManager InputMethodManager} 2058 * for management of input methods. 2059 * <dt> {@link #UI_MODE_SERVICE} ("uimode") 2060 * <dd> An {@link android.app.UiModeManager} for controlling UI modes. 2061 * <dt> {@link #DOWNLOAD_SERVICE} ("download") 2062 * <dd> A {@link android.app.DownloadManager} for requesting HTTP downloads 2063 * </dl> 2064 * 2065 * <p>Note: System services obtained via this API may be closely associated with 2066 * the Context in which they are obtained from. In general, do not share the 2067 * service objects between various different contexts (Activities, Applications, 2068 * Services, Providers, etc.) 2069 * 2070 * @param name The name of the desired service. 2071 * 2072 * @return The service or null if the name does not exist. 2073 * 2074 * @see #WINDOW_SERVICE 2075 * @see android.view.WindowManager 2076 * @see #LAYOUT_INFLATER_SERVICE 2077 * @see android.view.LayoutInflater 2078 * @see #ACTIVITY_SERVICE 2079 * @see android.app.ActivityManager 2080 * @see #POWER_SERVICE 2081 * @see android.os.PowerManager 2082 * @see #ALARM_SERVICE 2083 * @see android.app.AlarmManager 2084 * @see #NOTIFICATION_SERVICE 2085 * @see android.app.NotificationManager 2086 * @see #KEYGUARD_SERVICE 2087 * @see android.app.KeyguardManager 2088 * @see #LOCATION_SERVICE 2089 * @see android.location.LocationManager 2090 * @see #SEARCH_SERVICE 2091 * @see android.app.SearchManager 2092 * @see #SENSOR_SERVICE 2093 * @see android.hardware.SensorManager 2094 * @see #HDMI_CEC_SERVICE 2095 * @see android.hardware.hdmi.HdmiCecManager 2096 * @see #STORAGE_SERVICE 2097 * @see android.os.storage.StorageManager 2098 * @see #VIBRATOR_SERVICE 2099 * @see android.os.Vibrator 2100 * @see #CONNECTIVITY_SERVICE 2101 * @see android.net.ConnectivityManager 2102 * @see #WIFI_SERVICE 2103 * @see android.net.wifi.WifiManager 2104 * @see #AUDIO_SERVICE 2105 * @see android.media.AudioManager 2106 * @see #MEDIA_ROUTER_SERVICE 2107 * @see android.media.MediaRouter 2108 * @see #TELEPHONY_SERVICE 2109 * @see android.telephony.TelephonyManager 2110 * @see #INPUT_METHOD_SERVICE 2111 * @see android.view.inputmethod.InputMethodManager 2112 * @see #UI_MODE_SERVICE 2113 * @see android.app.UiModeManager 2114 * @see #DOWNLOAD_SERVICE 2115 * @see android.app.DownloadManager 2116 */ 2117 public abstract Object getSystemService(@ServiceName @NonNull String name); 2118 2119 /** 2120 * Use with {@link #getSystemService} to retrieve a 2121 * {@link android.os.PowerManager} for controlling power management, 2122 * including "wake locks," which let you keep the device on while 2123 * you're running long tasks. 2124 */ 2125 public static final String POWER_SERVICE = "power"; 2126 2127 /** 2128 * Use with {@link #getSystemService} to retrieve a 2129 * {@link android.view.WindowManager} for accessing the system's window 2130 * manager. 2131 * 2132 * @see #getSystemService 2133 * @see android.view.WindowManager 2134 */ 2135 public static final String WINDOW_SERVICE = "window"; 2136 2137 /** 2138 * Use with {@link #getSystemService} to retrieve a 2139 * {@link android.view.LayoutInflater} for inflating layout resources in this 2140 * context. 2141 * 2142 * @see #getSystemService 2143 * @see android.view.LayoutInflater 2144 */ 2145 public static final String LAYOUT_INFLATER_SERVICE = "layout_inflater"; 2146 2147 /** 2148 * Use with {@link #getSystemService} to retrieve a 2149 * {@link android.accounts.AccountManager} for receiving intents at a 2150 * time of your choosing. 2151 * 2152 * @see #getSystemService 2153 * @see android.accounts.AccountManager 2154 */ 2155 public static final String ACCOUNT_SERVICE = "account"; 2156 2157 /** 2158 * Use with {@link #getSystemService} to retrieve a 2159 * {@link android.app.ActivityManager} for interacting with the global 2160 * system state. 2161 * 2162 * @see #getSystemService 2163 * @see android.app.ActivityManager 2164 */ 2165 public static final String ACTIVITY_SERVICE = "activity"; 2166 2167 /** 2168 * Use with {@link #getSystemService} to retrieve a 2169 * {@link android.app.AlarmManager} for receiving intents at a 2170 * time of your choosing. 2171 * 2172 * @see #getSystemService 2173 * @see android.app.AlarmManager 2174 */ 2175 public static final String ALARM_SERVICE = "alarm"; 2176 2177 /** 2178 * Use with {@link #getSystemService} to retrieve a 2179 * {@link android.app.NotificationManager} for informing the user of 2180 * background events. 2181 * 2182 * @see #getSystemService 2183 * @see android.app.NotificationManager 2184 */ 2185 public static final String NOTIFICATION_SERVICE = "notification"; 2186 2187 /** 2188 * Use with {@link #getSystemService} to retrieve a 2189 * {@link android.view.accessibility.AccessibilityManager} for giving the user 2190 * feedback for UI events through the registered event listeners. 2191 * 2192 * @see #getSystemService 2193 * @see android.view.accessibility.AccessibilityManager 2194 */ 2195 public static final String ACCESSIBILITY_SERVICE = "accessibility"; 2196 2197 /** 2198 * Use with {@link #getSystemService} to retrieve a 2199 * {@link android.view.accessibility.CaptioningManager} for obtaining 2200 * captioning properties and listening for changes in captioning 2201 * preferences. 2202 * 2203 * @see #getSystemService 2204 * @see android.view.accessibility.CaptioningManager 2205 */ 2206 public static final String CAPTIONING_SERVICE = "captioning"; 2207 2208 /** 2209 * Use with {@link #getSystemService} to retrieve a 2210 * {@link android.app.NotificationManager} for controlling keyguard. 2211 * 2212 * @see #getSystemService 2213 * @see android.app.KeyguardManager 2214 */ 2215 public static final String KEYGUARD_SERVICE = "keyguard"; 2216 2217 /** 2218 * Use with {@link #getSystemService} to retrieve a {@link 2219 * android.location.LocationManager} for controlling location 2220 * updates. 2221 * 2222 * @see #getSystemService 2223 * @see android.location.LocationManager 2224 */ 2225 public static final String LOCATION_SERVICE = "location"; 2226 2227 /** 2228 * Use with {@link #getSystemService} to retrieve a 2229 * {@link android.location.CountryDetector} for detecting the country that 2230 * the user is in. 2231 * 2232 * @hide 2233 */ 2234 public static final String COUNTRY_DETECTOR = "country_detector"; 2235 2236 /** 2237 * Use with {@link #getSystemService} to retrieve a {@link 2238 * android.app.SearchManager} for handling searches. 2239 * 2240 * @see #getSystemService 2241 * @see android.app.SearchManager 2242 */ 2243 public static final String SEARCH_SERVICE = "search"; 2244 2245 /** 2246 * Use with {@link #getSystemService} to retrieve a {@link 2247 * android.hardware.SensorManager} for accessing sensors. 2248 * 2249 * @see #getSystemService 2250 * @see android.hardware.SensorManager 2251 */ 2252 public static final String SENSOR_SERVICE = "sensor"; 2253 2254 /** 2255 * Use with {@link #getSystemService} to retrieve a {@link 2256 * android.os.storage.StorageManager} for accessing system storage 2257 * functions. 2258 * 2259 * @see #getSystemService 2260 * @see android.os.storage.StorageManager 2261 */ 2262 public static final String STORAGE_SERVICE = "storage"; 2263 2264 /** 2265 * Use with {@link #getSystemService} to retrieve a 2266 * com.android.server.WallpaperService for accessing wallpapers. 2267 * 2268 * @see #getSystemService 2269 */ 2270 public static final String WALLPAPER_SERVICE = "wallpaper"; 2271 2272 /** 2273 * Use with {@link #getSystemService} to retrieve a {@link 2274 * android.os.Vibrator} for interacting with the vibration hardware. 2275 * 2276 * @see #getSystemService 2277 * @see android.os.Vibrator 2278 */ 2279 public static final String VIBRATOR_SERVICE = "vibrator"; 2280 2281 /** 2282 * Use with {@link #getSystemService} to retrieve a {@link 2283 * android.app.StatusBarManager} for interacting with the status bar. 2284 * 2285 * @see #getSystemService 2286 * @see android.app.StatusBarManager 2287 * @hide 2288 */ 2289 public static final String STATUS_BAR_SERVICE = "statusbar"; 2290 2291 /** 2292 * Use with {@link #getSystemService} to retrieve a {@link 2293 * android.net.ConnectivityManager} for handling management of 2294 * network connections. 2295 * 2296 * @see #getSystemService 2297 * @see android.net.ConnectivityManager 2298 */ 2299 public static final String CONNECTIVITY_SERVICE = "connectivity"; 2300 2301 /** 2302 * Use with {@link #getSystemService} to retrieve a {@link 2303 * android.os.IUpdateLock} for managing runtime sequences that 2304 * must not be interrupted by headless OTA application or similar. 2305 * 2306 * @hide 2307 * @see #getSystemService 2308 * @see android.os.UpdateLock 2309 */ 2310 public static final String UPDATE_LOCK_SERVICE = "updatelock"; 2311 2312 /** 2313 * Constant for the internal network management service, not really a Context service. 2314 * @hide 2315 */ 2316 public static final String NETWORKMANAGEMENT_SERVICE = "network_management"; 2317 2318 /** {@hide} */ 2319 public static final String NETWORK_STATS_SERVICE = "netstats"; 2320 /** {@hide} */ 2321 public static final String NETWORK_POLICY_SERVICE = "netpolicy"; 2322 2323 /** 2324 * Use with {@link #getSystemService} to retrieve a {@link 2325 * android.net.wifi.WifiManager} for handling management of 2326 * Wi-Fi access. 2327 * 2328 * @see #getSystemService 2329 * @see android.net.wifi.WifiManager 2330 */ 2331 public static final String WIFI_SERVICE = "wifi"; 2332 2333 /** 2334 * Use with {@link #getSystemService} to retrieve a {@link 2335 * android.net.wifi.hotspot.WifiHotspotManager} for handling management of 2336 * Wi-Fi hotspot access. 2337 * 2338 * @see #getSystemService 2339 * @see android.net.wifi.hotspot.WifiHotspotManager 2340 */ 2341 public static final String WIFI_HOTSPOT_SERVICE = "wifihotspot"; 2342 2343 /** 2344 * Use with {@link #getSystemService} to retrieve a {@link 2345 * android.net.wifi.p2p.WifiP2pManager} for handling management of 2346 * Wi-Fi peer-to-peer connections. 2347 * 2348 * @see #getSystemService 2349 * @see android.net.wifi.p2p.WifiP2pManager 2350 */ 2351 public static final String WIFI_P2P_SERVICE = "wifip2p"; 2352 2353 /** 2354 * Use with {@link #getSystemService} to retrieve a {@link 2355 * android.net.nsd.NsdManager} for handling management of network service 2356 * discovery 2357 * 2358 * @see #getSystemService 2359 * @see android.net.nsd.NsdManager 2360 */ 2361 public static final String NSD_SERVICE = "servicediscovery"; 2362 2363 /** 2364 * Use with {@link #getSystemService} to retrieve a 2365 * {@link android.media.AudioManager} for handling management of volume, 2366 * ringer modes and audio routing. 2367 * 2368 * @see #getSystemService 2369 * @see android.media.AudioManager 2370 */ 2371 public static final String AUDIO_SERVICE = "audio"; 2372 2373 /** 2374 * Use with {@link #getSystemService} to retrieve a 2375 * {@link android.media.MediaRouter} for controlling and managing 2376 * routing of media. 2377 * 2378 * @see #getSystemService 2379 * @see android.media.MediaRouter 2380 */ 2381 public static final String MEDIA_ROUTER_SERVICE = "media_router"; 2382 2383 /** 2384 * Use with {@link #getSystemService} to retrieve a 2385 * {@link android.media.session.MediaSessionManager} for managing media Sessions. 2386 * 2387 * @see #getSystemService 2388 * @see android.media.session.MediaSessionManager 2389 */ 2390 public static final String MEDIA_SESSION_SERVICE = "media_session"; 2391 2392 /** 2393 * Use with {@link #getSystemService} to retrieve a 2394 * {@link android.telephony.TelephonyManager} for handling management the 2395 * telephony features of the device. 2396 * 2397 * @see #getSystemService 2398 * @see android.telephony.TelephonyManager 2399 */ 2400 public static final String TELEPHONY_SERVICE = "phone"; 2401 2402 /** 2403 * Use with {@link #getSystemService} to retrieve a 2404 * {@link android.text.ClipboardManager} for accessing and modifying 2405 * the contents of the global clipboard. 2406 * 2407 * @see #getSystemService 2408 * @see android.text.ClipboardManager 2409 */ 2410 public static final String CLIPBOARD_SERVICE = "clipboard"; 2411 2412 /** 2413 * Use with {@link #getSystemService} to retrieve a 2414 * {@link android.view.inputmethod.InputMethodManager} for accessing input 2415 * methods. 2416 * 2417 * @see #getSystemService 2418 */ 2419 public static final String INPUT_METHOD_SERVICE = "input_method"; 2420 2421 /** 2422 * Use with {@link #getSystemService} to retrieve a 2423 * {@link android.view.textservice.TextServicesManager} for accessing 2424 * text services. 2425 * 2426 * @see #getSystemService 2427 */ 2428 public static final String TEXT_SERVICES_MANAGER_SERVICE = "textservices"; 2429 2430 /** 2431 * Use with {@link #getSystemService} to retrieve a 2432 * {@link android.appwidget.AppWidgetManager} for accessing AppWidgets. 2433 * 2434 * @hide 2435 * @see #getSystemService 2436 */ 2437 public static final String APPWIDGET_SERVICE = "appwidget"; 2438 2439 /** 2440 * Use with {@link #getSystemService} to retrieve an 2441 * {@link android.app.backup.IBackupManager IBackupManager} for communicating 2442 * with the backup mechanism. 2443 * @hide 2444 * 2445 * @see #getSystemService 2446 */ 2447 public static final String BACKUP_SERVICE = "backup"; 2448 2449 /** 2450 * Use with {@link #getSystemService} to retrieve a 2451 * {@link android.os.DropBoxManager} instance for recording 2452 * diagnostic logs. 2453 * @see #getSystemService 2454 */ 2455 public static final String DROPBOX_SERVICE = "dropbox"; 2456 2457 /** 2458 * Use with {@link #getSystemService} to retrieve a 2459 * {@link android.app.admin.DevicePolicyManager} for working with global 2460 * device policy management. 2461 * 2462 * @see #getSystemService 2463 */ 2464 public static final String DEVICE_POLICY_SERVICE = "device_policy"; 2465 2466 /** 2467 * Use with {@link #getSystemService} to retrieve a 2468 * {@link android.app.UiModeManager} for controlling UI modes. 2469 * 2470 * @see #getSystemService 2471 */ 2472 public static final String UI_MODE_SERVICE = "uimode"; 2473 2474 /** 2475 * Use with {@link #getSystemService} to retrieve a 2476 * {@link android.app.DownloadManager} for requesting HTTP downloads. 2477 * 2478 * @see #getSystemService 2479 */ 2480 public static final String DOWNLOAD_SERVICE = "download"; 2481 2482 /** 2483 * Use with {@link #getSystemService} to retrieve a 2484 * {@link android.nfc.NfcManager} for using NFC. 2485 * 2486 * @see #getSystemService 2487 */ 2488 public static final String NFC_SERVICE = "nfc"; 2489 2490 /** 2491 * Use with {@link #getSystemService} to retrieve a 2492 * {@link android.bluetooth.BluetoothAdapter} for using Bluetooth. 2493 * 2494 * @see #getSystemService 2495 */ 2496 public static final String BLUETOOTH_SERVICE = "bluetooth"; 2497 2498 /** 2499 * Use with {@link #getSystemService} to retrieve a 2500 * {@link android.net.sip.SipManager} for accessing the SIP related service. 2501 * 2502 * @see #getSystemService 2503 */ 2504 /** @hide */ 2505 public static final String SIP_SERVICE = "sip"; 2506 2507 /** 2508 * Use with {@link #getSystemService} to retrieve a {@link 2509 * android.hardware.usb.UsbManager} for access to USB devices (as a USB host) 2510 * and for controlling this device's behavior as a USB device. 2511 * 2512 * @see #getSystemService 2513 * @see android.hardware.usb.UsbManager 2514 */ 2515 public static final String USB_SERVICE = "usb"; 2516 2517 /** 2518 * Use with {@link #getSystemService} to retrieve a {@link 2519 * android.hardware.SerialManager} for access to serial ports. 2520 * 2521 * @see #getSystemService 2522 * @see android.hardware.SerialManager 2523 * 2524 * @hide 2525 */ 2526 public static final String SERIAL_SERVICE = "serial"; 2527 2528 /** 2529 * Use with {@link #getSystemService} to retrieve a 2530 * {@link android.hardware.hdmi.HdmiCecManager for controlling and managing 2531 * HDMI-CEC protocol. 2532 * 2533 * @see #getSystemService 2534 * @see android.hardware.hdmi.HdmiCecManager 2535 */ 2536 public static final String HDMI_CEC_SERVICE = "hdmi_cec"; 2537 2538 /** 2539 * Use with {@link #getSystemService} to retrieve a 2540 * {@link android.hardware.input.InputManager} for interacting with input devices. 2541 * 2542 * @see #getSystemService 2543 * @see android.hardware.input.InputManager 2544 */ 2545 public static final String INPUT_SERVICE = "input"; 2546 2547 /** 2548 * Use with {@link #getSystemService} to retrieve a 2549 * {@link android.hardware.display.DisplayManager} for interacting with display devices. 2550 * 2551 * @see #getSystemService 2552 * @see android.hardware.display.DisplayManager 2553 */ 2554 public static final String DISPLAY_SERVICE = "display"; 2555 2556 /** 2557 * Use with {@link #getSystemService} to retrieve a 2558 * {@link android.os.UserManager} for managing users on devices that support multiple users. 2559 * 2560 * @see #getSystemService 2561 * @see android.os.UserManager 2562 */ 2563 public static final String USER_SERVICE = "user"; 2564 2565 /** 2566 * Use with {@link #getSystemService} to retrieve a 2567 * {@link android.content.pm.LauncherApps} for querying and monitoring launchable apps across 2568 * profiles of a user. 2569 * 2570 * @see #getSystemService 2571 * @see android.content.pm.LauncherApps 2572 */ 2573 public static final String LAUNCHER_APPS_SERVICE = "launcherapps"; 2574 2575 /** 2576 * Use with {@link #getSystemService} to retrieve a 2577 * {@link android.app.AppOpsManager} for tracking application operations 2578 * on the device. 2579 * 2580 * @see #getSystemService 2581 * @see android.app.AppOpsManager 2582 */ 2583 public static final String APP_OPS_SERVICE = "appops"; 2584 2585 /** 2586 * Use with {@link #getSystemService} to retrieve a 2587 * {@link android.hardware.camera2.CameraManager} for interacting with 2588 * camera devices. 2589 * 2590 * @see #getSystemService 2591 * @see android.hardware.camera2.CameraManager 2592 */ 2593 public static final String CAMERA_SERVICE = "camera"; 2594 2595 /** 2596 * {@link android.print.PrintManager} for printing and managing 2597 * printers and print tasks. 2598 * 2599 * @see #getSystemService 2600 * @see android.print.PrintManager 2601 */ 2602 public static final String PRINT_SERVICE = "print"; 2603 2604 /** 2605 * Use with {@link #getSystemService} to retrieve a 2606 * {@link android.hardware.ConsumerIrManager} for transmitting infrared 2607 * signals from the device. 2608 * 2609 * @see #getSystemService 2610 * @see android.hardware.ConsumerIrManager 2611 */ 2612 public static final String CONSUMER_IR_SERVICE = "consumer_ir"; 2613 2614 /** 2615 * {@link android.app.trust.TrustManager} for managing trust agents. 2616 * @see #getSystemService 2617 * @see android.app.trust.TrustManager 2618 * @hide 2619 */ 2620 public static final String TRUST_SERVICE = "trust"; 2621 2622 /** 2623 * Use with {@link #getSystemService} to retrieve a 2624 * {@link android.tv.TvInputManager} for interacting with TV inputs on the 2625 * device. 2626 * 2627 * @see #getSystemService 2628 * @see android.tv.TvInputManager 2629 */ 2630 public static final String TV_INPUT_SERVICE = "tv_input"; 2631 2632 /** 2633 * Determine whether the given permission is allowed for a particular 2634 * process and user ID running in the system. 2635 * 2636 * @param permission The name of the permission being checked. 2637 * @param pid The process ID being checked against. Must be > 0. 2638 * @param uid The user ID being checked against. A uid of 0 is the root 2639 * user, which will pass every permission check. 2640 * 2641 * @return {@link PackageManager#PERMISSION_GRANTED} if the given 2642 * pid/uid is allowed that permission, or 2643 * {@link PackageManager#PERMISSION_DENIED} if it is not. 2644 * 2645 * @see PackageManager#checkPermission(String, String) 2646 * @see #checkCallingPermission 2647 */ 2648 @PackageManager.PermissionResult 2649 public abstract int checkPermission(@NonNull String permission, int pid, int uid); 2650 2651 /** 2652 * Determine whether the calling process of an IPC you are handling has been 2653 * granted a particular permission. This is basically the same as calling 2654 * {@link #checkPermission(String, int, int)} with the pid and uid returned 2655 * by {@link android.os.Binder#getCallingPid} and 2656 * {@link android.os.Binder#getCallingUid}. One important difference 2657 * is that if you are not currently processing an IPC, this function 2658 * will always fail. This is done to protect against accidentally 2659 * leaking permissions; you can use {@link #checkCallingOrSelfPermission} 2660 * to avoid this protection. 2661 * 2662 * @param permission The name of the permission being checked. 2663 * 2664 * @return {@link PackageManager#PERMISSION_GRANTED} if the calling 2665 * pid/uid is allowed that permission, or 2666 * {@link PackageManager#PERMISSION_DENIED} if it is not. 2667 * 2668 * @see PackageManager#checkPermission(String, String) 2669 * @see #checkPermission 2670 * @see #checkCallingOrSelfPermission 2671 */ 2672 @PackageManager.PermissionResult 2673 public abstract int checkCallingPermission(@NonNull String permission); 2674 2675 /** 2676 * Determine whether the calling process of an IPC <em>or you</em> have been 2677 * granted a particular permission. This is the same as 2678 * {@link #checkCallingPermission}, except it grants your own permissions 2679 * if you are not currently processing an IPC. Use with care! 2680 * 2681 * @param permission The name of the permission being checked. 2682 * 2683 * @return {@link PackageManager#PERMISSION_GRANTED} if the calling 2684 * pid/uid is allowed that permission, or 2685 * {@link PackageManager#PERMISSION_DENIED} if it is not. 2686 * 2687 * @see PackageManager#checkPermission(String, String) 2688 * @see #checkPermission 2689 * @see #checkCallingPermission 2690 */ 2691 @PackageManager.PermissionResult 2692 public abstract int checkCallingOrSelfPermission(@NonNull String permission); 2693 2694 /** 2695 * If the given permission is not allowed for a particular process 2696 * and user ID running in the system, throw a {@link SecurityException}. 2697 * 2698 * @param permission The name of the permission being checked. 2699 * @param pid The process ID being checked against. Must be > 0. 2700 * @param uid The user ID being checked against. A uid of 0 is the root 2701 * user, which will pass every permission check. 2702 * @param message A message to include in the exception if it is thrown. 2703 * 2704 * @see #checkPermission(String, int, int) 2705 */ 2706 public abstract void enforcePermission( 2707 @NonNull String permission, int pid, int uid, @Nullable String message); 2708 2709 /** 2710 * If the calling process of an IPC you are handling has not been 2711 * granted a particular permission, throw a {@link 2712 * SecurityException}. This is basically the same as calling 2713 * {@link #enforcePermission(String, int, int, String)} with the 2714 * pid and uid returned by {@link android.os.Binder#getCallingPid} 2715 * and {@link android.os.Binder#getCallingUid}. One important 2716 * difference is that if you are not currently processing an IPC, 2717 * this function will always throw the SecurityException. This is 2718 * done to protect against accidentally leaking permissions; you 2719 * can use {@link #enforceCallingOrSelfPermission} to avoid this 2720 * protection. 2721 * 2722 * @param permission The name of the permission being checked. 2723 * @param message A message to include in the exception if it is thrown. 2724 * 2725 * @see #checkCallingPermission(String) 2726 */ 2727 public abstract void enforceCallingPermission( 2728 @NonNull String permission, @Nullable String message); 2729 2730 /** 2731 * If neither you nor the calling process of an IPC you are 2732 * handling has been granted a particular permission, throw a 2733 * {@link SecurityException}. This is the same as {@link 2734 * #enforceCallingPermission}, except it grants your own 2735 * permissions if you are not currently processing an IPC. Use 2736 * with care! 2737 * 2738 * @param permission The name of the permission being checked. 2739 * @param message A message to include in the exception if it is thrown. 2740 * 2741 * @see #checkCallingOrSelfPermission(String) 2742 */ 2743 public abstract void enforceCallingOrSelfPermission( 2744 @NonNull String permission, @Nullable String message); 2745 2746 /** 2747 * Grant permission to access a specific Uri to another package, regardless 2748 * of whether that package has general permission to access the Uri's 2749 * content provider. This can be used to grant specific, temporary 2750 * permissions, typically in response to user interaction (such as the 2751 * user opening an attachment that you would like someone else to 2752 * display). 2753 * 2754 * <p>Normally you should use {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 2755 * Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2756 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 2757 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} with the Intent being used to 2758 * start an activity instead of this function directly. If you use this 2759 * function directly, you should be sure to call 2760 * {@link #revokeUriPermission} when the target should no longer be allowed 2761 * to access it. 2762 * 2763 * <p>To succeed, the content provider owning the Uri must have set the 2764 * {@link android.R.styleable#AndroidManifestProvider_grantUriPermissions 2765 * grantUriPermissions} attribute in its manifest or included the 2766 * {@link android.R.styleable#AndroidManifestGrantUriPermission 2767 * <grant-uri-permissions>} tag. 2768 * 2769 * @param toPackage The package you would like to allow to access the Uri. 2770 * @param uri The Uri you would like to grant access to. 2771 * @param modeFlags The desired access modes. Any combination of 2772 * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 2773 * Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2774 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 2775 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION}. 2776 * 2777 * @see #revokeUriPermission 2778 */ 2779 public abstract void grantUriPermission(String toPackage, Uri uri, 2780 @Intent.GrantUriMode int modeFlags); 2781 2782 /** 2783 * Remove all permissions to access a particular content provider Uri 2784 * that were previously added with {@link #grantUriPermission}. The given 2785 * Uri will match all previously granted Uris that are the same or a 2786 * sub-path of the given Uri. That is, revoking "content://foo/target" will 2787 * revoke both "content://foo/target" and "content://foo/target/sub", but not 2788 * "content://foo". 2789 * 2790 * @param uri The Uri you would like to revoke access to. 2791 * @param modeFlags The desired access modes. Any combination of 2792 * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 2793 * Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2794 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 2795 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION}. 2796 * 2797 * @see #grantUriPermission 2798 */ 2799 public abstract void revokeUriPermission(Uri uri, @Intent.GrantUriMode int modeFlags); 2800 2801 /** 2802 * Determine whether a particular process and user ID has been granted 2803 * permission to access a specific URI. This only checks for permissions 2804 * that have been explicitly granted -- if the given process/uid has 2805 * more general access to the URI's content provider then this check will 2806 * always fail. 2807 * 2808 * @param uri The uri that is being checked. 2809 * @param pid The process ID being checked against. Must be > 0. 2810 * @param uid The user ID being checked against. A uid of 0 is the root 2811 * user, which will pass every permission check. 2812 * @param modeFlags The type of access to grant. May be one or both of 2813 * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2814 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}. 2815 * 2816 * @return {@link PackageManager#PERMISSION_GRANTED} if the given 2817 * pid/uid is allowed to access that uri, or 2818 * {@link PackageManager#PERMISSION_DENIED} if it is not. 2819 * 2820 * @see #checkCallingUriPermission 2821 */ 2822 public abstract int checkUriPermission(Uri uri, int pid, int uid, 2823 @Intent.GrantUriMode int modeFlags); 2824 2825 /** 2826 * Determine whether the calling process and user ID has been 2827 * granted permission to access a specific URI. This is basically 2828 * the same as calling {@link #checkUriPermission(Uri, int, int, 2829 * int)} with the pid and uid returned by {@link 2830 * android.os.Binder#getCallingPid} and {@link 2831 * android.os.Binder#getCallingUid}. One important difference is 2832 * that if you are not currently processing an IPC, this function 2833 * will always fail. 2834 * 2835 * @param uri The uri that is being checked. 2836 * @param modeFlags The type of access to grant. May be one or both of 2837 * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2838 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}. 2839 * 2840 * @return {@link PackageManager#PERMISSION_GRANTED} if the caller 2841 * is allowed to access that uri, or 2842 * {@link PackageManager#PERMISSION_DENIED} if it is not. 2843 * 2844 * @see #checkUriPermission(Uri, int, int, int) 2845 */ 2846 public abstract int checkCallingUriPermission(Uri uri, @Intent.GrantUriMode int modeFlags); 2847 2848 /** 2849 * Determine whether the calling process of an IPC <em>or you</em> has been granted 2850 * permission to access a specific URI. This is the same as 2851 * {@link #checkCallingUriPermission}, except it grants your own permissions 2852 * if you are not currently processing an IPC. Use with care! 2853 * 2854 * @param uri The uri that is being checked. 2855 * @param modeFlags The type of access to grant. May be one or both of 2856 * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2857 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}. 2858 * 2859 * @return {@link PackageManager#PERMISSION_GRANTED} if the caller 2860 * is allowed to access that uri, or 2861 * {@link PackageManager#PERMISSION_DENIED} if it is not. 2862 * 2863 * @see #checkCallingUriPermission 2864 */ 2865 public abstract int checkCallingOrSelfUriPermission(Uri uri, 2866 @Intent.GrantUriMode int modeFlags); 2867 2868 /** 2869 * Check both a Uri and normal permission. This allows you to perform 2870 * both {@link #checkPermission} and {@link #checkUriPermission} in one 2871 * call. 2872 * 2873 * @param uri The Uri whose permission is to be checked, or null to not 2874 * do this check. 2875 * @param readPermission The permission that provides overall read access, 2876 * or null to not do this check. 2877 * @param writePermission The permission that provides overall write 2878 * access, or null to not do this check. 2879 * @param pid The process ID being checked against. Must be > 0. 2880 * @param uid The user ID being checked against. A uid of 0 is the root 2881 * user, which will pass every permission check. 2882 * @param modeFlags The type of access to grant. May be one or both of 2883 * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2884 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}. 2885 * 2886 * @return {@link PackageManager#PERMISSION_GRANTED} if the caller 2887 * is allowed to access that uri or holds one of the given permissions, or 2888 * {@link PackageManager#PERMISSION_DENIED} if it is not. 2889 */ 2890 public abstract int checkUriPermission(@Nullable Uri uri, @Nullable String readPermission, 2891 @Nullable String writePermission, int pid, int uid, 2892 @Intent.GrantUriMode int modeFlags); 2893 2894 /** 2895 * If a particular process and user ID has not been granted 2896 * permission to access a specific URI, throw {@link 2897 * SecurityException}. This only checks for permissions that have 2898 * been explicitly granted -- if the given process/uid has more 2899 * general access to the URI's content provider then this check 2900 * will always fail. 2901 * 2902 * @param uri The uri that is being checked. 2903 * @param pid The process ID being checked against. Must be > 0. 2904 * @param uid The user ID being checked against. A uid of 0 is the root 2905 * user, which will pass every permission check. 2906 * @param modeFlags The type of access to grant. May be one or both of 2907 * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2908 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}. 2909 * @param message A message to include in the exception if it is thrown. 2910 * 2911 * @see #checkUriPermission(Uri, int, int, int) 2912 */ 2913 public abstract void enforceUriPermission( 2914 Uri uri, int pid, int uid, @Intent.GrantUriMode int modeFlags, String message); 2915 2916 /** 2917 * If the calling process and user ID has not been granted 2918 * permission to access a specific URI, throw {@link 2919 * SecurityException}. This is basically the same as calling 2920 * {@link #enforceUriPermission(Uri, int, int, int, String)} with 2921 * the pid and uid returned by {@link 2922 * android.os.Binder#getCallingPid} and {@link 2923 * android.os.Binder#getCallingUid}. One important difference is 2924 * that if you are not currently processing an IPC, this function 2925 * will always throw a SecurityException. 2926 * 2927 * @param uri The uri that is being checked. 2928 * @param modeFlags The type of access to grant. May be one or both of 2929 * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2930 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}. 2931 * @param message A message to include in the exception if it is thrown. 2932 * 2933 * @see #checkCallingUriPermission(Uri, int) 2934 */ 2935 public abstract void enforceCallingUriPermission( 2936 Uri uri, @Intent.GrantUriMode int modeFlags, String message); 2937 2938 /** 2939 * If the calling process of an IPC <em>or you</em> has not been 2940 * granted permission to access a specific URI, throw {@link 2941 * SecurityException}. This is the same as {@link 2942 * #enforceCallingUriPermission}, except it grants your own 2943 * permissions if you are not currently processing an IPC. Use 2944 * with care! 2945 * 2946 * @param uri The uri that is being checked. 2947 * @param modeFlags The type of access to grant. May be one or both of 2948 * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2949 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}. 2950 * @param message A message to include in the exception if it is thrown. 2951 * 2952 * @see #checkCallingOrSelfUriPermission(Uri, int) 2953 */ 2954 public abstract void enforceCallingOrSelfUriPermission( 2955 Uri uri, @Intent.GrantUriMode int modeFlags, String message); 2956 2957 /** 2958 * Enforce both a Uri and normal permission. This allows you to perform 2959 * both {@link #enforcePermission} and {@link #enforceUriPermission} in one 2960 * call. 2961 * 2962 * @param uri The Uri whose permission is to be checked, or null to not 2963 * do this check. 2964 * @param readPermission The permission that provides overall read access, 2965 * or null to not do this check. 2966 * @param writePermission The permission that provides overall write 2967 * access, or null to not do this check. 2968 * @param pid The process ID being checked against. Must be > 0. 2969 * @param uid The user ID being checked against. A uid of 0 is the root 2970 * user, which will pass every permission check. 2971 * @param modeFlags The type of access to grant. May be one or both of 2972 * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or 2973 * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}. 2974 * @param message A message to include in the exception if it is thrown. 2975 * 2976 * @see #checkUriPermission(Uri, String, String, int, int, int) 2977 */ 2978 public abstract void enforceUriPermission( 2979 @Nullable Uri uri, @Nullable String readPermission, 2980 @Nullable String writePermission, int pid, int uid, @Intent.GrantUriMode int modeFlags, 2981 @Nullable String message); 2982 2983 /** @hide */ 2984 @IntDef(flag = true, 2985 value = {CONTEXT_INCLUDE_CODE, CONTEXT_IGNORE_SECURITY, CONTEXT_RESTRICTED}) 2986 @Retention(RetentionPolicy.SOURCE) 2987 public @interface CreatePackageOptions {} 2988 2989 /** 2990 * Flag for use with {@link #createPackageContext}: include the application 2991 * code with the context. This means loading code into the caller's 2992 * process, so that {@link #getClassLoader()} can be used to instantiate 2993 * the application's classes. Setting this flags imposes security 2994 * restrictions on what application context you can access; if the 2995 * requested application can not be safely loaded into your process, 2996 * java.lang.SecurityException will be thrown. If this flag is not set, 2997 * there will be no restrictions on the packages that can be loaded, 2998 * but {@link #getClassLoader} will always return the default system 2999 * class loader. 3000 */ 3001 public static final int CONTEXT_INCLUDE_CODE = 0x00000001; 3002 3003 /** 3004 * Flag for use with {@link #createPackageContext}: ignore any security 3005 * restrictions on the Context being requested, allowing it to always 3006 * be loaded. For use with {@link #CONTEXT_INCLUDE_CODE} to allow code 3007 * to be loaded into a process even when it isn't safe to do so. Use 3008 * with extreme care! 3009 */ 3010 public static final int CONTEXT_IGNORE_SECURITY = 0x00000002; 3011 3012 /** 3013 * Flag for use with {@link #createPackageContext}: a restricted context may 3014 * disable specific features. For instance, a View associated with a restricted 3015 * context would ignore particular XML attributes. 3016 */ 3017 public static final int CONTEXT_RESTRICTED = 0x00000004; 3018 3019 /** 3020 * Return a new Context object for the given application name. This 3021 * Context is the same as what the named application gets when it is 3022 * launched, containing the same resources and class loader. Each call to 3023 * this method returns a new instance of a Context object; Context objects 3024 * are not shared, however they share common state (Resources, ClassLoader, 3025 * etc) so the Context instance itself is fairly lightweight. 3026 * 3027 * <p>Throws {@link PackageManager.NameNotFoundException} if there is no 3028 * application with the given package name. 3029 * 3030 * <p>Throws {@link java.lang.SecurityException} if the Context requested 3031 * can not be loaded into the caller's process for security reasons (see 3032 * {@link #CONTEXT_INCLUDE_CODE} for more information}. 3033 * 3034 * @param packageName Name of the application's package. 3035 * @param flags Option flags, one of {@link #CONTEXT_INCLUDE_CODE} 3036 * or {@link #CONTEXT_IGNORE_SECURITY}. 3037 * 3038 * @return A {@link Context} for the application. 3039 * 3040 * @throws SecurityException 3041 * @throws PackageManager.NameNotFoundException if there is no application with 3042 * the given package name. 3043 */ 3044 public abstract Context createPackageContext(String packageName, 3045 @CreatePackageOptions int flags) throws PackageManager.NameNotFoundException; 3046 3047 /** 3048 * Similar to {@link #createPackageContext(String, int)}, but with a 3049 * different {@link UserHandle}. For example, {@link #getContentResolver()} 3050 * will open any {@link Uri} as the given user. 3051 * 3052 * @hide 3053 */ 3054 public abstract Context createPackageContextAsUser( 3055 String packageName, int flags, UserHandle user) 3056 throws PackageManager.NameNotFoundException; 3057 3058 /** 3059 * Get the userId associated with this context 3060 * @return user id 3061 * 3062 * @hide 3063 */ 3064 public abstract int getUserId(); 3065 3066 /** 3067 * Return a new Context object for the current Context but whose resources 3068 * are adjusted to match the given Configuration. Each call to this method 3069 * returns a new instance of a Context object; Context objects are not 3070 * shared, however common state (ClassLoader, other Resources for the 3071 * same configuration) may be so the Context itself can be fairly lightweight. 3072 * 3073 * @param overrideConfiguration A {@link Configuration} specifying what 3074 * values to modify in the base Configuration of the original Context's 3075 * resources. If the base configuration changes (such as due to an 3076 * orientation change), the resources of this context will also change except 3077 * for those that have been explicitly overridden with a value here. 3078 * 3079 * @return A {@link Context} with the given configuration override. 3080 */ 3081 public abstract Context createConfigurationContext( 3082 @NonNull Configuration overrideConfiguration); 3083 3084 /** 3085 * Return a new Context object for the current Context but whose resources 3086 * are adjusted to match the metrics of the given Display. Each call to this method 3087 * returns a new instance of a Context object; Context objects are not 3088 * shared, however common state (ClassLoader, other Resources for the 3089 * same configuration) may be so the Context itself can be fairly lightweight. 3090 * 3091 * The returned display Context provides a {@link WindowManager} 3092 * (see {@link #getSystemService(String)}) that is configured to show windows 3093 * on the given display. The WindowManager's {@link WindowManager#getDefaultDisplay} 3094 * method can be used to retrieve the Display from the returned Context. 3095 * 3096 * @param display A {@link Display} object specifying the display 3097 * for whose metrics the Context's resources should be tailored and upon which 3098 * new windows should be shown. 3099 * 3100 * @return A {@link Context} for the display. 3101 */ 3102 public abstract Context createDisplayContext(@NonNull Display display); 3103 3104 /** 3105 * Gets the display adjustments holder for this context. This information 3106 * is provided on a per-application or activity basis and is used to simulate lower density 3107 * display metrics for legacy applications and restricted screen sizes. 3108 * 3109 * @param displayId The display id for which to get compatibility info. 3110 * @return The compatibility info holder, or null if not required by the application. 3111 * @hide 3112 */ 3113 public abstract DisplayAdjustments getDisplayAdjustments(int displayId); 3114 3115 /** 3116 * Indicates whether this Context is restricted. 3117 * 3118 * @return {@code true} if this Context is restricted, {@code false} otherwise. 3119 * 3120 * @see #CONTEXT_RESTRICTED 3121 */ 3122 public boolean isRestricted() { 3123 return false; 3124 } 3125} 3126