ActivityInfo.java revision 269248d112e35fe8e9f0d5d11c96dcb2ac1118b0
1/* 2 * Copyright (C) 2007 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.pm; 18 19import android.os.Parcel; 20import android.os.Parcelable; 21import android.util.Printer; 22 23/** 24 * Information you can retrieve about a particular application 25 * activity or receiver. This corresponds to information collected 26 * from the AndroidManifest.xml's <activity> and 27 * <receiver> tags. 28 */ 29public class ActivityInfo extends ComponentInfo 30 implements Parcelable { 31 /** 32 * A style resource identifier (in the package's resources) of this 33 * activity's theme. From the "theme" attribute or, if not set, 0. 34 */ 35 public int theme; 36 37 /** 38 * Constant corresponding to <code>standard</code> in 39 * the {@link android.R.attr#launchMode} attribute. 40 */ 41 public static final int LAUNCH_MULTIPLE = 0; 42 /** 43 * Constant corresponding to <code>singleTop</code> in 44 * the {@link android.R.attr#launchMode} attribute. 45 */ 46 public static final int LAUNCH_SINGLE_TOP = 1; 47 /** 48 * Constant corresponding to <code>singleTask</code> in 49 * the {@link android.R.attr#launchMode} attribute. 50 */ 51 public static final int LAUNCH_SINGLE_TASK = 2; 52 /** 53 * Constant corresponding to <code>singleInstance</code> in 54 * the {@link android.R.attr#launchMode} attribute. 55 */ 56 public static final int LAUNCH_SINGLE_INSTANCE = 3; 57 /** 58 * The launch mode style requested by the activity. From the 59 * {@link android.R.attr#launchMode} attribute, one of 60 * {@link #LAUNCH_MULTIPLE}, 61 * {@link #LAUNCH_SINGLE_TOP}, {@link #LAUNCH_SINGLE_TASK}, or 62 * {@link #LAUNCH_SINGLE_INSTANCE}. 63 */ 64 public int launchMode; 65 66 /** 67 * Optional name of a permission required to be able to access this 68 * Activity. From the "permission" attribute. 69 */ 70 public String permission; 71 72 /** 73 * The affinity this activity has for another task in the system. The 74 * string here is the name of the task, often the package name of the 75 * overall package. If null, the activity has no affinity. Set from the 76 * {@link android.R.attr#taskAffinity} attribute. 77 */ 78 public String taskAffinity; 79 80 /** 81 * If this is an activity alias, this is the real activity class to run 82 * for it. Otherwise, this is null. 83 */ 84 public String targetActivity; 85 86 /** 87 * Bit in {@link #flags} indicating whether this activity is able to 88 * run in multiple processes. If 89 * true, the system may instantiate it in the some process as the 90 * process starting it in order to conserve resources. If false, the 91 * default, it always runs in {@link #processName}. Set from the 92 * {@link android.R.attr#multiprocess} attribute. 93 */ 94 public static final int FLAG_MULTIPROCESS = 0x0001; 95 /** 96 * Bit in {@link #flags} indicating that, when the activity's task is 97 * relaunched from home, this activity should be finished. 98 * Set from the 99 * {@link android.R.attr#finishOnTaskLaunch} attribute. 100 */ 101 public static final int FLAG_FINISH_ON_TASK_LAUNCH = 0x0002; 102 /** 103 * Bit in {@link #flags} indicating that, when the activity is the root 104 * of a task, that task's stack should be cleared each time the user 105 * re-launches it from home. As a result, the user will always 106 * return to the original activity at the top of the task. 107 * This flag only applies to activities that 108 * are used to start the root of a new task. Set from the 109 * {@link android.R.attr#clearTaskOnLaunch} attribute. 110 */ 111 public static final int FLAG_CLEAR_TASK_ON_LAUNCH = 0x0004; 112 /** 113 * Bit in {@link #flags} indicating that, when the activity is the root 114 * of a task, that task's stack should never be cleared when it is 115 * relaunched from home. Set from the 116 * {@link android.R.attr#alwaysRetainTaskState} attribute. 117 */ 118 public static final int FLAG_ALWAYS_RETAIN_TASK_STATE = 0x0008; 119 /** 120 * Bit in {@link #flags} indicating that the activity's state 121 * is not required to be saved, so that if there is a failure the 122 * activity will not be removed from the activity stack. Set from the 123 * {@link android.R.attr#stateNotNeeded} attribute. 124 */ 125 public static final int FLAG_STATE_NOT_NEEDED = 0x0010; 126 /** 127 * Bit in {@link #flags} that indicates that the activity should not 128 * appear in the list of recently launched activities. Set from the 129 * {@link android.R.attr#excludeFromRecents} attribute. 130 */ 131 public static final int FLAG_EXCLUDE_FROM_RECENTS = 0x0020; 132 /** 133 * Bit in {@link #flags} that indicates that the activity can be moved 134 * between tasks based on its task affinity. Set from the 135 * {@link android.R.attr#allowTaskReparenting} attribute. 136 */ 137 public static final int FLAG_ALLOW_TASK_REPARENTING = 0x0040; 138 /** 139 * Bit in {@link #flags} indicating that, when the user navigates away 140 * from an activity, it should be finished. 141 * Set from the 142 * {@link android.R.attr#noHistory} attribute. 143 */ 144 public static final int FLAG_NO_HISTORY = 0x0080; 145 /** 146 * Bit in {@link #flags} indicating that, when a request to close system 147 * windows happens, this activity is finished. 148 * Set from the 149 * {@link android.R.attr#finishOnCloseSystemDialogs} attribute. 150 */ 151 public static final int FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS = 0x0100; 152 /** 153 * Value for {@link #flags}: true when the application's rendering should 154 * be hardware accelerated. 155 */ 156 public static final int FLAG_HARDWARE_ACCELERATED = 0x0200; 157 /** 158 * @hide 159 * Bit in {@link #flags} corresponding to an immersive activity 160 * that wishes not to be interrupted by notifications. 161 * Applications that hide the system notification bar with 162 * {@link android.view.WindowManager.LayoutParams#FLAG_FULLSCREEN} 163 * may still be interrupted by high-priority notifications; for example, an 164 * incoming phone call may use 165 * {@link android.app.Notification#fullScreenIntent fullScreenIntent} 166 * to present a full-screen in-call activity to the user, pausing the 167 * current activity as a side-effect. An activity with 168 * {@link #FLAG_IMMERSIVE} set, however, will not be interrupted; the 169 * notification may be shown in some other way (such as a small floating 170 * "toast" window). 171 * {@see android.app.Notification#FLAG_HIGH_PRIORITY} 172 */ 173 public static final int FLAG_IMMERSIVE = 0x0400; 174 /** 175 * Options that have been set in the activity declaration in the 176 * manifest. 177 * These include: 178 * {@link #FLAG_MULTIPROCESS}, 179 * {@link #FLAG_FINISH_ON_TASK_LAUNCH}, {@link #FLAG_CLEAR_TASK_ON_LAUNCH}, 180 * {@link #FLAG_ALWAYS_RETAIN_TASK_STATE}, 181 * {@link #FLAG_STATE_NOT_NEEDED}, {@link #FLAG_EXCLUDE_FROM_RECENTS}, 182 * {@link #FLAG_ALLOW_TASK_REPARENTING}, {@link #FLAG_NO_HISTORY}, 183 * {@link #FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS}, 184 * {@link #FLAG_HARDWARE_ACCELERATED} 185 */ 186 public int flags; 187 188 /** 189 * Constant corresponding to <code>unspecified</code> in 190 * the {@link android.R.attr#screenOrientation} attribute. 191 */ 192 public static final int SCREEN_ORIENTATION_UNSPECIFIED = -1; 193 /** 194 * Constant corresponding to <code>landscape</code> in 195 * the {@link android.R.attr#screenOrientation} attribute. 196 */ 197 public static final int SCREEN_ORIENTATION_LANDSCAPE = 0; 198 /** 199 * Constant corresponding to <code>portrait</code> in 200 * the {@link android.R.attr#screenOrientation} attribute. 201 */ 202 public static final int SCREEN_ORIENTATION_PORTRAIT = 1; 203 /** 204 * Constant corresponding to <code>user</code> in 205 * the {@link android.R.attr#screenOrientation} attribute. 206 */ 207 public static final int SCREEN_ORIENTATION_USER = 2; 208 /** 209 * Constant corresponding to <code>behind</code> in 210 * the {@link android.R.attr#screenOrientation} attribute. 211 */ 212 public static final int SCREEN_ORIENTATION_BEHIND = 3; 213 /** 214 * Constant corresponding to <code>sensor</code> in 215 * the {@link android.R.attr#screenOrientation} attribute. 216 */ 217 public static final int SCREEN_ORIENTATION_SENSOR = 4; 218 219 /** 220 * Constant corresponding to <code>nosensor</code> in 221 * the {@link android.R.attr#screenOrientation} attribute. 222 */ 223 public static final int SCREEN_ORIENTATION_NOSENSOR = 5; 224 225 /** 226 * Constant corresponding to <code>sensorLandscape</code> in 227 * the {@link android.R.attr#screenOrientation} attribute. 228 */ 229 public static final int SCREEN_ORIENTATION_SENSOR_LANDSCAPE = 6; 230 231 /** 232 * Constant corresponding to <code>sensorPortrait</code> in 233 * the {@link android.R.attr#screenOrientation} attribute. 234 */ 235 public static final int SCREEN_ORIENTATION_SENSOR_PORTRAIT = 7; 236 237 /** 238 * Constant corresponding to <code>reverseLandscape</code> in 239 * the {@link android.R.attr#screenOrientation} attribute. 240 */ 241 public static final int SCREEN_ORIENTATION_REVERSE_LANDSCAPE = 8; 242 243 /** 244 * Constant corresponding to <code>reversePortrait</code> in 245 * the {@link android.R.attr#screenOrientation} attribute. 246 */ 247 public static final int SCREEN_ORIENTATION_REVERSE_PORTRAIT = 9; 248 249 /** 250 * Constant corresponding to <code>fullSensor</code> in 251 * the {@link android.R.attr#screenOrientation} attribute. 252 */ 253 public static final int SCREEN_ORIENTATION_FULL_SENSOR = 10; 254 255 /** 256 * The preferred screen orientation this activity would like to run in. 257 * From the {@link android.R.attr#screenOrientation} attribute, one of 258 * {@link #SCREEN_ORIENTATION_UNSPECIFIED}, 259 * {@link #SCREEN_ORIENTATION_LANDSCAPE}, 260 * {@link #SCREEN_ORIENTATION_PORTRAIT}, 261 * {@link #SCREEN_ORIENTATION_USER}, 262 * {@link #SCREEN_ORIENTATION_BEHIND}, 263 * {@link #SCREEN_ORIENTATION_SENSOR}, 264 * {@link #SCREEN_ORIENTATION_NOSENSOR}, 265 * {@link #SCREEN_ORIENTATION_SENSOR_LANDSCAPE}, 266 * {@link #SCREEN_ORIENTATION_SENSOR_PORTRAIT}, 267 * {@link #SCREEN_ORIENTATION_REVERSE_LANDSCAPE}, 268 * {@link #SCREEN_ORIENTATION_REVERSE_PORTRAIT}, 269 * {@link #SCREEN_ORIENTATION_FULL_SENSOR}. 270 */ 271 public int screenOrientation = SCREEN_ORIENTATION_UNSPECIFIED; 272 273 /** 274 * Bit in {@link #configChanges} that indicates that the activity 275 * can itself handle changes to the IMSI MCC. Set from the 276 * {@link android.R.attr#configChanges} attribute. 277 */ 278 public static final int CONFIG_MCC = 0x0001; 279 /** 280 * Bit in {@link #configChanges} that indicates that the activity 281 * can itself handle changes to the IMSI MNC. Set from the 282 * {@link android.R.attr#configChanges} attribute. 283 */ 284 public static final int CONFIG_MNC = 0x0002; 285 /** 286 * Bit in {@link #configChanges} that indicates that the activity 287 * can itself handle changes to the locale. Set from the 288 * {@link android.R.attr#configChanges} attribute. 289 */ 290 public static final int CONFIG_LOCALE = 0x0004; 291 /** 292 * Bit in {@link #configChanges} that indicates that the activity 293 * can itself handle changes to the touchscreen type. Set from the 294 * {@link android.R.attr#configChanges} attribute. 295 */ 296 public static final int CONFIG_TOUCHSCREEN = 0x0008; 297 /** 298 * Bit in {@link #configChanges} that indicates that the activity 299 * can itself handle changes to the keyboard type. Set from the 300 * {@link android.R.attr#configChanges} attribute. 301 */ 302 public static final int CONFIG_KEYBOARD = 0x0010; 303 /** 304 * Bit in {@link #configChanges} that indicates that the activity 305 * can itself handle changes to the keyboard or navigation being hidden/exposed. 306 * Note that inspite of the name, this applies to the changes to any 307 * hidden states: keyboard or navigation. 308 * Set from the {@link android.R.attr#configChanges} attribute. 309 */ 310 public static final int CONFIG_KEYBOARD_HIDDEN = 0x0020; 311 /** 312 * Bit in {@link #configChanges} that indicates that the activity 313 * can itself handle changes to the navigation type. Set from the 314 * {@link android.R.attr#configChanges} attribute. 315 */ 316 public static final int CONFIG_NAVIGATION = 0x0040; 317 /** 318 * Bit in {@link #configChanges} that indicates that the activity 319 * can itself handle changes to the screen orientation. Set from the 320 * {@link android.R.attr#configChanges} attribute. 321 */ 322 public static final int CONFIG_ORIENTATION = 0x0080; 323 /** 324 * Bit in {@link #configChanges} that indicates that the activity 325 * can itself handle changes to the screen layout. Set from the 326 * {@link android.R.attr#configChanges} attribute. 327 */ 328 public static final int CONFIG_SCREEN_LAYOUT = 0x0100; 329 /** 330 * Bit in {@link #configChanges} that indicates that the activity 331 * can itself handle the ui mode. Set from the 332 * {@link android.R.attr#configChanges} attribute. 333 */ 334 public static final int CONFIG_UI_MODE = 0x0200; 335 /** 336 * Bit in {@link #configChanges} that indicates that the activity 337 * can itself handle the screen size. Set from the 338 * {@link android.R.attr#configChanges} attribute. This will be 339 * set by default for applications that target an earlier version 340 * than {@link android.os.Build.VERSION_CODES#HONEYCOMB_MR2}... 341 * <b>however</b>, you will not see the bit set here becomes some 342 * applications incorrectly compare {@link #configChanges} against 343 * an absolute value rather than correctly masking out the bits 344 * they are interested in. Please don't do that, thanks. 345 */ 346 public static final int CONFIG_SCREEN_SIZE = 0x0400; 347 /** 348 * Bit in {@link #configChanges} that indicates that the activity 349 * can itself handle the smallest screen size. Set from the 350 * {@link android.R.attr#configChanges} attribute. This will be 351 * set by default for applications that target an earlier version 352 * than {@link android.os.Build.VERSION_CODES#HONEYCOMB_MR2}... 353 * <b>however</b>, you will not see the bit set here becomes some 354 * applications incorrectly compare {@link #configChanges} against 355 * an absolute value rather than correctly masking out the bits 356 * they are interested in. Please don't do that, thanks. 357 */ 358 public static final int CONFIG_SMALLEST_SCREEN_SIZE = 0x0800; 359 /** 360 * Bit in {@link #configChanges} that indicates that the activity 361 * can itself handle changes to the font scaling factor. Set from the 362 * {@link android.R.attr#configChanges} attribute. This is 363 * not a core resource configutation, but a higher-level value, so its 364 * constant starts at the high bits. 365 */ 366 public static final int CONFIG_FONT_SCALE = 0x40000000; 367 368 /** @hide 369 * Unfortunately the constants for config changes in native code are 370 * different from ActivityInfo. :( Here are the values we should use for the 371 * native side given the bit we have assigned in ActivityInfo. 372 */ 373 public static int[] CONFIG_NATIVE_BITS = new int[] { 374 0x0001, // MNC 375 0x0002, // MCC 376 0x0004, // LOCALE 377 0x0008, // TOUCH SCREEN 378 0x0010, // KEYBOARD 379 0x0020, // KEYBOARD HIDDEN 380 0x0040, // NAVIGATION 381 0x0080, // ORIENTATION 382 0x0800, // SCREEN LAYOUT 383 0x1000, // UI MODE 384 0x0200, // SCREEN SIZE 385 0x2000, // SMALLEST SCREEN SIZE 386 }; 387 /** @hide 388 * Convert Java change bits to native. 389 */ 390 public static int activityInfoConfigToNative(int input) { 391 int output = 0; 392 for (int i=0; i<CONFIG_NATIVE_BITS.length; i++) { 393 if ((input&(1<<i)) != 0) { 394 output |= CONFIG_NATIVE_BITS[i]; 395 } 396 } 397 return output; 398 } 399 400 /** 401 * @hide 402 * Unfortunately some developers (OpenFeint I am looking at you) have 403 * compared the configChanges bit field against absolute values, so if we 404 * introduce a new bit they break. To deal with that, we will make sure 405 * the public field will not have a value that breaks them, and let the 406 * framework call here to get the real value. 407 */ 408 public int getRealConfigChanged() { 409 return applicationInfo.targetSdkVersion < android.os.Build.VERSION_CODES.HONEYCOMB_MR2 410 ? (configChanges | ActivityInfo.CONFIG_SCREEN_SIZE 411 | ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE) 412 : configChanges; 413 } 414 415 /** 416 * Bit mask of kinds of configuration changes that this activity 417 * can handle itself (without being restarted by the system). 418 * Contains any combination of {@link #CONFIG_FONT_SCALE}, 419 * {@link #CONFIG_MCC}, {@link #CONFIG_MNC}, 420 * {@link #CONFIG_LOCALE}, {@link #CONFIG_TOUCHSCREEN}, 421 * {@link #CONFIG_KEYBOARD}, {@link #CONFIG_NAVIGATION}, 422 * {@link #CONFIG_ORIENTATION}, and {@link #CONFIG_SCREEN_LAYOUT}. Set from the 423 * {@link android.R.attr#configChanges} attribute. 424 */ 425 public int configChanges; 426 427 /** 428 * The desired soft input mode for this activity's main window. 429 * Set from the {@link android.R.attr#windowSoftInputMode} attribute 430 * in the activity's manifest. May be any of the same values allowed 431 * for {@link android.view.WindowManager.LayoutParams#softInputMode 432 * WindowManager.LayoutParams.softInputMode}. If 0 (unspecified), 433 * the mode from the theme will be used. 434 */ 435 public int softInputMode; 436 437 /** 438 * The desired extra UI options for this activity and its main window. 439 * Set from the {@link android.R.attr#uiOptions} attribute in the 440 * activity's manifest. 441 */ 442 public int uiOptions = 0; 443 444 /** 445 * Flag for use with uiOptions. 446 */ 447 public static final int UIOPTION_SPLIT_ACTION_BAR_WHEN_NARROW = 1; 448 449 public ActivityInfo() { 450 } 451 452 public ActivityInfo(ActivityInfo orig) { 453 super(orig); 454 theme = orig.theme; 455 launchMode = orig.launchMode; 456 permission = orig.permission; 457 taskAffinity = orig.taskAffinity; 458 targetActivity = orig.targetActivity; 459 flags = orig.flags; 460 screenOrientation = orig.screenOrientation; 461 configChanges = orig.configChanges; 462 softInputMode = orig.softInputMode; 463 uiOptions = orig.uiOptions; 464 } 465 466 /** 467 * Return the theme resource identifier to use for this activity. If 468 * the activity defines a theme, that is used; else, the application 469 * theme is used. 470 * 471 * @return The theme associated with this activity. 472 */ 473 public final int getThemeResource() { 474 return theme != 0 ? theme : applicationInfo.theme; 475 } 476 477 public void dump(Printer pw, String prefix) { 478 super.dumpFront(pw, prefix); 479 if (permission != null) { 480 pw.println(prefix + "permission=" + permission); 481 } 482 pw.println(prefix + "taskAffinity=" + taskAffinity 483 + " targetActivity=" + targetActivity); 484 if (launchMode != 0 || flags != 0 || theme != 0) { 485 pw.println(prefix + "launchMode=" + launchMode 486 + " flags=0x" + Integer.toHexString(flags) 487 + " theme=0x" + Integer.toHexString(theme)); 488 } 489 if (screenOrientation != SCREEN_ORIENTATION_UNSPECIFIED 490 || configChanges != 0 || softInputMode != 0) { 491 pw.println(prefix + "screenOrientation=" + screenOrientation 492 + " configChanges=0x" + Integer.toHexString(configChanges) 493 + " softInputMode=0x" + Integer.toHexString(softInputMode)); 494 } 495 if (uiOptions != 0) { 496 pw.println(prefix + " uiOptions=0x" + Integer.toHexString(uiOptions)); 497 } 498 super.dumpBack(pw, prefix); 499 } 500 501 public String toString() { 502 return "ActivityInfo{" 503 + Integer.toHexString(System.identityHashCode(this)) 504 + " " + name + "}"; 505 } 506 507 public int describeContents() { 508 return 0; 509 } 510 511 public void writeToParcel(Parcel dest, int parcelableFlags) { 512 super.writeToParcel(dest, parcelableFlags); 513 dest.writeInt(theme); 514 dest.writeInt(launchMode); 515 dest.writeString(permission); 516 dest.writeString(taskAffinity); 517 dest.writeString(targetActivity); 518 dest.writeInt(flags); 519 dest.writeInt(screenOrientation); 520 dest.writeInt(configChanges); 521 dest.writeInt(softInputMode); 522 dest.writeInt(uiOptions); 523 } 524 525 public static final Parcelable.Creator<ActivityInfo> CREATOR 526 = new Parcelable.Creator<ActivityInfo>() { 527 public ActivityInfo createFromParcel(Parcel source) { 528 return new ActivityInfo(source); 529 } 530 public ActivityInfo[] newArray(int size) { 531 return new ActivityInfo[size]; 532 } 533 }; 534 535 private ActivityInfo(Parcel source) { 536 super(source); 537 theme = source.readInt(); 538 launchMode = source.readInt(); 539 permission = source.readString(); 540 taskAffinity = source.readString(); 541 targetActivity = source.readString(); 542 flags = source.readInt(); 543 screenOrientation = source.readInt(); 544 configChanges = source.readInt(); 545 softInputMode = source.readInt(); 546 uiOptions = source.readInt(); 547 } 548} 549