ActivityManager.java revision a4d4e82927ceadc23863e74b7e1160e4497504a7
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.app; 18 19import android.Manifest; 20import android.annotation.NonNull; 21import android.annotation.Nullable; 22import android.annotation.RequiresPermission; 23import android.annotation.SystemApi; 24import android.graphics.Canvas; 25import android.graphics.Matrix; 26import android.graphics.Point; 27import android.os.BatteryStats; 28import android.os.IBinder; 29import android.os.ParcelFileDescriptor; 30 31import android.util.Log; 32import com.android.internal.app.ProcessStats; 33import com.android.internal.os.TransferPipe; 34import com.android.internal.util.FastPrintWriter; 35 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.pm.ApplicationInfo; 40import android.content.pm.ConfigurationInfo; 41import android.content.pm.IPackageDataObserver; 42import android.content.pm.PackageManager; 43import android.content.pm.UserInfo; 44import android.content.res.Resources; 45import android.graphics.Bitmap; 46import android.graphics.Color; 47import android.graphics.Rect; 48import android.os.Bundle; 49import android.os.Debug; 50import android.os.Handler; 51import android.os.Parcel; 52import android.os.Parcelable; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.ServiceManager; 56import android.os.SystemProperties; 57import android.os.UserHandle; 58import android.text.TextUtils; 59import android.util.DisplayMetrics; 60import android.util.Size; 61import android.util.Slog; 62import org.xmlpull.v1.XmlSerializer; 63 64import java.io.FileDescriptor; 65import java.io.FileOutputStream; 66import java.io.IOException; 67import java.io.PrintWriter; 68import java.util.ArrayList; 69import java.util.List; 70 71/** 72 * Interact with the overall activities running in the system. 73 */ 74public class ActivityManager { 75 private static String TAG = "ActivityManager"; 76 private static boolean localLOGV = false; 77 78 private static int gMaxRecentTasks = -1; 79 80 private final Context mContext; 81 private final Handler mHandler; 82 83 /** 84 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 85 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 86 * uninstalled in lieu of the declaring one. The package named here must be 87 * signed with the same certificate as the one declaring the {@code <meta-data>}. 88 */ 89 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 90 91 /** 92 * Result for IActivityManager.startActivity: trying to start a background user 93 * activity that shouldn't be displayed for all users. 94 * @hide 95 */ 96 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 97 98 /** 99 * Result for IActivityManager.startActivity: trying to start an activity under voice 100 * control when that activity does not support the VOICE category. 101 * @hide 102 */ 103 public static final int START_NOT_VOICE_COMPATIBLE = -7; 104 105 /** 106 * Result for IActivityManager.startActivity: an error where the 107 * start had to be canceled. 108 * @hide 109 */ 110 public static final int START_CANCELED = -6; 111 112 /** 113 * Result for IActivityManager.startActivity: an error where the 114 * thing being started is not an activity. 115 * @hide 116 */ 117 public static final int START_NOT_ACTIVITY = -5; 118 119 /** 120 * Result for IActivityManager.startActivity: an error where the 121 * caller does not have permission to start the activity. 122 * @hide 123 */ 124 public static final int START_PERMISSION_DENIED = -4; 125 126 /** 127 * Result for IActivityManager.startActivity: an error where the 128 * caller has requested both to forward a result and to receive 129 * a result. 130 * @hide 131 */ 132 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 133 134 /** 135 * Result for IActivityManager.startActivity: an error where the 136 * requested class is not found. 137 * @hide 138 */ 139 public static final int START_CLASS_NOT_FOUND = -2; 140 141 /** 142 * Result for IActivityManager.startActivity: an error where the 143 * given Intent could not be resolved to an activity. 144 * @hide 145 */ 146 public static final int START_INTENT_NOT_RESOLVED = -1; 147 148 /** 149 * Result for IActivityManaqer.startActivity: the activity was started 150 * successfully as normal. 151 * @hide 152 */ 153 public static final int START_SUCCESS = 0; 154 155 /** 156 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 157 * be executed if it is the recipient, and that is indeed the case. 158 * @hide 159 */ 160 public static final int START_RETURN_INTENT_TO_CALLER = 1; 161 162 /** 163 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 164 * a task was simply brought to the foreground. 165 * @hide 166 */ 167 public static final int START_TASK_TO_FRONT = 2; 168 169 /** 170 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 171 * the given Intent was given to the existing top activity. 172 * @hide 173 */ 174 public static final int START_DELIVERED_TO_TOP = 3; 175 176 /** 177 * Result for IActivityManaqer.startActivity: request was canceled because 178 * app switches are temporarily canceled to ensure the user's last request 179 * (such as pressing home) is performed. 180 * @hide 181 */ 182 public static final int START_SWITCHES_CANCELED = 4; 183 184 /** 185 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 186 * while in Lock Task Mode. 187 * @hide 188 */ 189 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 190 191 /** 192 * Flag for IActivityManaqer.startActivity: do special start mode where 193 * a new activity is launched only if it is needed. 194 * @hide 195 */ 196 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 197 198 /** 199 * Flag for IActivityManaqer.startActivity: launch the app for 200 * debugging. 201 * @hide 202 */ 203 public static final int START_FLAG_DEBUG = 1<<1; 204 205 /** 206 * Flag for IActivityManaqer.startActivity: launch the app for 207 * allocation tracking. 208 * @hide 209 */ 210 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 211 212 /** 213 * Result for IActivityManaqer.broadcastIntent: success! 214 * @hide 215 */ 216 public static final int BROADCAST_SUCCESS = 0; 217 218 /** 219 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 220 * a sticky intent without appropriate permission. 221 * @hide 222 */ 223 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 224 225 /** 226 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 227 * to a stopped user. Fail. 228 * @hide 229 */ 230 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 231 232 /** 233 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 234 * for a sendBroadcast operation. 235 * @hide 236 */ 237 public static final int INTENT_SENDER_BROADCAST = 1; 238 239 /** 240 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 241 * for a startActivity operation. 242 * @hide 243 */ 244 public static final int INTENT_SENDER_ACTIVITY = 2; 245 246 /** 247 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 248 * for an activity result operation. 249 * @hide 250 */ 251 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 252 253 /** 254 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 255 * for a startService operation. 256 * @hide 257 */ 258 public static final int INTENT_SENDER_SERVICE = 4; 259 260 /** @hide User operation call: success! */ 261 public static final int USER_OP_SUCCESS = 0; 262 263 /** @hide User operation call: given user id is not known. */ 264 public static final int USER_OP_UNKNOWN_USER = -1; 265 266 /** @hide User operation call: given user id is the current user, can't be stopped. */ 267 public static final int USER_OP_IS_CURRENT = -2; 268 269 /** @hide Process does not exist. */ 270 public static final int PROCESS_STATE_NONEXISTENT = -1; 271 272 /** @hide Process is a persistent system process. */ 273 public static final int PROCESS_STATE_PERSISTENT = 0; 274 275 /** @hide Process is a persistent system process and is doing UI. */ 276 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 277 278 /** @hide Process is hosting the current top activities. Note that this covers 279 * all activities that are visible to the user. */ 280 public static final int PROCESS_STATE_TOP = 2; 281 282 /** @hide Process is hosting a foreground service due to a system binding. */ 283 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 284 285 /** @hide Process is hosting a foreground service. */ 286 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 287 288 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 289 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 290 291 /** @hide Process is important to the user, and something they are aware of. */ 292 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 293 294 /** @hide Process is important to the user, but not something they are aware of. */ 295 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 296 297 /** @hide Process is in the background running a backup/restore operation. */ 298 public static final int PROCESS_STATE_BACKUP = 8; 299 300 /** @hide Process is in the background, but it can't restore its state so we want 301 * to try to avoid killing it. */ 302 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 303 304 /** @hide Process is in the background running a service. Unlike oom_adj, this level 305 * is used for both the normal running in background state and the executing 306 * operations state. */ 307 public static final int PROCESS_STATE_SERVICE = 10; 308 309 /** @hide Process is in the background running a receiver. Note that from the 310 * perspective of oom_adj receivers run at a higher foreground level, but for our 311 * prioritization here that is not necessary and putting them below services means 312 * many fewer changes in some process states as they receive broadcasts. */ 313 public static final int PROCESS_STATE_RECEIVER = 11; 314 315 /** @hide Process is in the background but hosts the home activity. */ 316 public static final int PROCESS_STATE_HOME = 12; 317 318 /** @hide Process is in the background but hosts the last shown activity. */ 319 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 320 321 /** @hide Process is being cached for later use and contains activities. */ 322 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 323 324 /** @hide Process is being cached for later use and is a client of another cached 325 * process that contains activities. */ 326 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 327 328 /** @hide Process is being cached for later use and is empty. */ 329 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 330 331 /** @hide requestType for assist context: only basic information. */ 332 public static final int ASSIST_CONTEXT_BASIC = 0; 333 334 /** @hide requestType for assist context: generate full AssistStructure. */ 335 public static final int ASSIST_CONTEXT_FULL = 1; 336 337 /** 338 * Lock task mode is not active. 339 */ 340 public static final int LOCK_TASK_MODE_NONE = 0; 341 342 /** 343 * Full lock task mode is active. 344 */ 345 public static final int LOCK_TASK_MODE_LOCKED = 1; 346 347 /** 348 * App pinning mode is active. 349 */ 350 public static final int LOCK_TASK_MODE_PINNED = 2; 351 352 Point mAppTaskThumbnailSize; 353 354 /*package*/ ActivityManager(Context context, Handler handler) { 355 mContext = context; 356 mHandler = handler; 357 } 358 359 /** 360 * Screen compatibility mode: the application most always run in 361 * compatibility mode. 362 * @hide 363 */ 364 public static final int COMPAT_MODE_ALWAYS = -1; 365 366 /** 367 * Screen compatibility mode: the application can never run in 368 * compatibility mode. 369 * @hide 370 */ 371 public static final int COMPAT_MODE_NEVER = -2; 372 373 /** 374 * Screen compatibility mode: unknown. 375 * @hide 376 */ 377 public static final int COMPAT_MODE_UNKNOWN = -3; 378 379 /** 380 * Screen compatibility mode: the application currently has compatibility 381 * mode disabled. 382 * @hide 383 */ 384 public static final int COMPAT_MODE_DISABLED = 0; 385 386 /** 387 * Screen compatibility mode: the application currently has compatibility 388 * mode enabled. 389 * @hide 390 */ 391 public static final int COMPAT_MODE_ENABLED = 1; 392 393 /** 394 * Screen compatibility mode: request to toggle the application's 395 * compatibility mode. 396 * @hide 397 */ 398 public static final int COMPAT_MODE_TOGGLE = 2; 399 400 /** 401 * Invalid stack ID. 402 * @hide 403 */ 404 public static final int INVALID_STACK_ID = -1; 405 406 /** 407 * First static stack ID. 408 * @hide 409 */ 410 public static final int FIRST_STATIC_STACK_ID = 0; 411 412 /** 413 * Home activity stack ID. 414 * @hide 415 */ 416 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 417 418 /** 419 * ID of stack where fullscreen activities are normally launched into. 420 * @hide 421 */ 422 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 423 424 /** 425 * ID of stack where freeform/resized activities are normally launched into. 426 * @hide 427 */ 428 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 429 430 /** 431 * ID of stack that occupies a dedicated region of the screen. 432 * @hide 433 */ 434 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 435 436 /** 437 * Last static stack stack ID. 438 * @hide 439 */ 440 public static final int LAST_STATIC_STACK_ID = DOCKED_STACK_ID; 441 442 /** 443 * Start of ID range used by stacks that are created dynamically. 444 * @hide 445 */ 446 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 447 448 /** 449 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 450 * specifies the position of the created docked stack at the top half of the screen if 451 * in portrait mode or at the left half of the screen if in landscape mode. 452 * @hide 453 */ 454 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 455 456 /** 457 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 458 * specifies the position of the created docked stack at the bottom half of the screen if 459 * in portrait mode or at the right half of the screen if in landscape mode. 460 * @hide 461 */ 462 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 463 464 /** 465 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 466 * that the resize doesn't need to preserve the window, and can be skipped if bounds 467 * is unchanged. This mode is used by window manager in most cases. 468 * @hide 469 */ 470 public static final int RESIZE_MODE_SYSTEM = 0; 471 472 /** 473 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 474 * that the resize should preserve the window if possible. 475 * @hide 476 */ 477 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 478 479 /** 480 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 481 * that the resize should be performed even if the bounds appears unchanged. 482 * @hide 483 */ 484 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 485 486 /** 487 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 488 * manager during a screen rotation. 489 * @hide 490 */ 491 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 492 493 /** 494 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 495 * resize is due to a drag action. 496 * @hide 497 */ 498 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 499 500 /** 501 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 502 * that the resize should preserve the window if possible, and should not be skipped 503 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 504 * is ending. 505 * @hide 506 */ 507 public static final int RESIZE_MODE_USER_FORCED = 508 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 509 510 /** @hide */ 511 public int getFrontActivityScreenCompatMode() { 512 try { 513 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 514 } catch (RemoteException e) { 515 // System dead, we will be dead too soon! 516 return 0; 517 } 518 } 519 520 /** @hide */ 521 public void setFrontActivityScreenCompatMode(int mode) { 522 try { 523 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 524 } catch (RemoteException e) { 525 // System dead, we will be dead too soon! 526 } 527 } 528 529 /** @hide */ 530 public int getPackageScreenCompatMode(String packageName) { 531 try { 532 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 533 } catch (RemoteException e) { 534 // System dead, we will be dead too soon! 535 return 0; 536 } 537 } 538 539 /** @hide */ 540 public void setPackageScreenCompatMode(String packageName, int mode) { 541 try { 542 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 543 } catch (RemoteException e) { 544 // System dead, we will be dead too soon! 545 } 546 } 547 548 /** @hide */ 549 public boolean getPackageAskScreenCompat(String packageName) { 550 try { 551 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 552 } catch (RemoteException e) { 553 // System dead, we will be dead too soon! 554 return false; 555 } 556 } 557 558 /** @hide */ 559 public void setPackageAskScreenCompat(String packageName, boolean ask) { 560 try { 561 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 562 } catch (RemoteException e) { 563 // System dead, we will be dead too soon! 564 } 565 } 566 567 /** 568 * Return the approximate per-application memory class of the current 569 * device. This gives you an idea of how hard a memory limit you should 570 * impose on your application to let the overall system work best. The 571 * returned value is in megabytes; the baseline Android memory class is 572 * 16 (which happens to be the Java heap limit of those devices); some 573 * device with more memory may return 24 or even higher numbers. 574 */ 575 public int getMemoryClass() { 576 return staticGetMemoryClass(); 577 } 578 579 /** @hide */ 580 static public int staticGetMemoryClass() { 581 // Really brain dead right now -- just take this from the configured 582 // vm heap size, and assume it is in megabytes and thus ends with "m". 583 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 584 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 585 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 586 } 587 return staticGetLargeMemoryClass(); 588 } 589 590 /** 591 * Return the approximate per-application memory class of the current 592 * device when an application is running with a large heap. This is the 593 * space available for memory-intensive applications; most applications 594 * should not need this amount of memory, and should instead stay with the 595 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 596 * This may be the same size as {@link #getMemoryClass()} on memory 597 * constrained devices, or it may be significantly larger on devices with 598 * a large amount of available RAM. 599 * 600 * <p>The is the size of the application's Dalvik heap if it has 601 * specified <code>android:largeHeap="true"</code> in its manifest. 602 */ 603 public int getLargeMemoryClass() { 604 return staticGetLargeMemoryClass(); 605 } 606 607 /** @hide */ 608 static public int staticGetLargeMemoryClass() { 609 // Really brain dead right now -- just take this from the configured 610 // vm heap size, and assume it is in megabytes and thus ends with "m". 611 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 612 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 613 } 614 615 /** 616 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 617 * is ultimately up to the device configuration, but currently it generally means 618 * something in the class of a 512MB device with about a 800x480 or less screen. 619 * This is mostly intended to be used by apps to determine whether they should turn 620 * off certain features that require more RAM. 621 */ 622 public boolean isLowRamDevice() { 623 return isLowRamDeviceStatic(); 624 } 625 626 /** @hide */ 627 public static boolean isLowRamDeviceStatic() { 628 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 629 } 630 631 /** 632 * Used by persistent processes to determine if they are running on a 633 * higher-end device so should be okay using hardware drawing acceleration 634 * (which tends to consume a lot more RAM). 635 * @hide 636 */ 637 static public boolean isHighEndGfx() { 638 return !isLowRamDeviceStatic() && 639 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 640 } 641 642 /** 643 * Return the maximum number of recents entries that we will maintain and show. 644 * @hide 645 */ 646 static public int getMaxRecentTasksStatic() { 647 if (gMaxRecentTasks < 0) { 648 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 649 } 650 return gMaxRecentTasks; 651 } 652 653 /** 654 * Return the default limit on the number of recents that an app can make. 655 * @hide 656 */ 657 static public int getDefaultAppRecentsLimitStatic() { 658 return getMaxRecentTasksStatic() / 6; 659 } 660 661 /** 662 * Return the maximum limit on the number of recents that an app can make. 663 * @hide 664 */ 665 static public int getMaxAppRecentsLimitStatic() { 666 return getMaxRecentTasksStatic() / 2; 667 } 668 669 /** 670 * Information you can set and retrieve about the current activity within the recent task list. 671 */ 672 public static class TaskDescription implements Parcelable { 673 /** @hide */ 674 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 675 private static final String ATTR_TASKDESCRIPTIONLABEL = 676 ATTR_TASKDESCRIPTION_PREFIX + "label"; 677 private static final String ATTR_TASKDESCRIPTIONCOLOR = 678 ATTR_TASKDESCRIPTION_PREFIX + "color"; 679 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 680 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 681 682 private String mLabel; 683 private Bitmap mIcon; 684 private String mIconFilename; 685 private int mColorPrimary; 686 687 /** 688 * Creates the TaskDescription to the specified values. 689 * 690 * @param label A label and description of the current state of this task. 691 * @param icon An icon that represents the current state of this task. 692 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 693 */ 694 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 695 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 696 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 697 } 698 699 mLabel = label; 700 mIcon = icon; 701 mColorPrimary = colorPrimary; 702 } 703 704 /** @hide */ 705 public TaskDescription(String label, int colorPrimary, String iconFilename) { 706 this(label, null, colorPrimary); 707 mIconFilename = iconFilename; 708 } 709 710 /** 711 * Creates the TaskDescription to the specified values. 712 * 713 * @param label A label and description of the current state of this activity. 714 * @param icon An icon that represents the current state of this activity. 715 */ 716 public TaskDescription(String label, Bitmap icon) { 717 this(label, icon, 0); 718 } 719 720 /** 721 * Creates the TaskDescription to the specified values. 722 * 723 * @param label A label and description of the current state of this activity. 724 */ 725 public TaskDescription(String label) { 726 this(label, null, 0); 727 } 728 729 /** 730 * Creates an empty TaskDescription. 731 */ 732 public TaskDescription() { 733 this(null, null, 0); 734 } 735 736 /** 737 * Creates a copy of another TaskDescription. 738 */ 739 public TaskDescription(TaskDescription td) { 740 mLabel = td.mLabel; 741 mIcon = td.mIcon; 742 mColorPrimary = td.mColorPrimary; 743 mIconFilename = td.mIconFilename; 744 } 745 746 private TaskDescription(Parcel source) { 747 readFromParcel(source); 748 } 749 750 /** 751 * Sets the label for this task description. 752 * @hide 753 */ 754 public void setLabel(String label) { 755 mLabel = label; 756 } 757 758 /** 759 * Sets the primary color for this task description. 760 * @hide 761 */ 762 public void setPrimaryColor(int primaryColor) { 763 // Ensure that the given color is valid 764 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 765 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 766 } 767 mColorPrimary = primaryColor; 768 } 769 770 /** 771 * Sets the icon for this task description. 772 * @hide 773 */ 774 public void setIcon(Bitmap icon) { 775 mIcon = icon; 776 } 777 778 /** 779 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 780 * bitmap. 781 * @hide 782 */ 783 public void setIconFilename(String iconFilename) { 784 mIconFilename = iconFilename; 785 mIcon = null; 786 } 787 788 /** 789 * @return The label and description of the current state of this task. 790 */ 791 public String getLabel() { 792 return mLabel; 793 } 794 795 /** 796 * @return The icon that represents the current state of this task. 797 */ 798 public Bitmap getIcon() { 799 if (mIcon != null) { 800 return mIcon; 801 } 802 return loadTaskDescriptionIcon(mIconFilename); 803 } 804 805 /** @hide */ 806 public String getIconFilename() { 807 return mIconFilename; 808 } 809 810 /** @hide */ 811 public Bitmap getInMemoryIcon() { 812 return mIcon; 813 } 814 815 /** @hide */ 816 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 817 if (iconFilename != null) { 818 try { 819 return ActivityManagerNative.getDefault(). 820 getTaskDescriptionIcon(iconFilename); 821 } catch (RemoteException e) { 822 } 823 } 824 return null; 825 } 826 827 /** 828 * @return The color override on the theme's primary color. 829 */ 830 public int getPrimaryColor() { 831 return mColorPrimary; 832 } 833 834 /** @hide */ 835 public void saveToXml(XmlSerializer out) throws IOException { 836 if (mLabel != null) { 837 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 838 } 839 if (mColorPrimary != 0) { 840 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 841 } 842 if (mIconFilename != null) { 843 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 844 } 845 } 846 847 /** @hide */ 848 public void restoreFromXml(String attrName, String attrValue) { 849 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 850 setLabel(attrValue); 851 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 852 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 853 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 854 setIconFilename(attrValue); 855 } 856 } 857 858 @Override 859 public int describeContents() { 860 return 0; 861 } 862 863 @Override 864 public void writeToParcel(Parcel dest, int flags) { 865 if (mLabel == null) { 866 dest.writeInt(0); 867 } else { 868 dest.writeInt(1); 869 dest.writeString(mLabel); 870 } 871 if (mIcon == null) { 872 dest.writeInt(0); 873 } else { 874 dest.writeInt(1); 875 mIcon.writeToParcel(dest, 0); 876 } 877 dest.writeInt(mColorPrimary); 878 if (mIconFilename == null) { 879 dest.writeInt(0); 880 } else { 881 dest.writeInt(1); 882 dest.writeString(mIconFilename); 883 } 884 } 885 886 public void readFromParcel(Parcel source) { 887 mLabel = source.readInt() > 0 ? source.readString() : null; 888 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 889 mColorPrimary = source.readInt(); 890 mIconFilename = source.readInt() > 0 ? source.readString() : null; 891 } 892 893 public static final Creator<TaskDescription> CREATOR 894 = new Creator<TaskDescription>() { 895 public TaskDescription createFromParcel(Parcel source) { 896 return new TaskDescription(source); 897 } 898 public TaskDescription[] newArray(int size) { 899 return new TaskDescription[size]; 900 } 901 }; 902 903 @Override 904 public String toString() { 905 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 906 " colorPrimary: " + mColorPrimary; 907 } 908 } 909 910 /** 911 * Information you can retrieve about tasks that the user has most recently 912 * started or visited. 913 */ 914 public static class RecentTaskInfo implements Parcelable { 915 /** 916 * If this task is currently running, this is the identifier for it. 917 * If it is not running, this will be -1. 918 */ 919 public int id; 920 921 /** 922 * The true identifier of this task, valid even if it is not running. 923 */ 924 public int persistentId; 925 926 /** 927 * The original Intent used to launch the task. You can use this 928 * Intent to re-launch the task (if it is no longer running) or bring 929 * the current task to the front. 930 */ 931 public Intent baseIntent; 932 933 /** 934 * If this task was started from an alias, this is the actual 935 * activity component that was initially started; the component of 936 * the baseIntent in this case is the name of the actual activity 937 * implementation that the alias referred to. Otherwise, this is null. 938 */ 939 public ComponentName origActivity; 940 941 /** 942 * The actual activity component that started the task. 943 * @hide 944 */ 945 @Nullable 946 public ComponentName realActivity; 947 948 /** 949 * Description of the task's last state. 950 */ 951 public CharSequence description; 952 953 /** 954 * The id of the ActivityStack this Task was on most recently. 955 * @hide 956 */ 957 public int stackId; 958 959 /** 960 * The id of the user the task was running as. 961 * @hide 962 */ 963 public int userId; 964 965 /** 966 * The first time this task was active. 967 * @hide 968 */ 969 public long firstActiveTime; 970 971 /** 972 * The last time this task was active. 973 * @hide 974 */ 975 public long lastActiveTime; 976 977 /** 978 * The recent activity values for the highest activity in the stack to have set the values. 979 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 980 */ 981 public TaskDescription taskDescription; 982 983 /** 984 * Task affiliation for grouping with other tasks. 985 */ 986 public int affiliatedTaskId; 987 988 /** 989 * Task affiliation color of the source task with the affiliated task id. 990 * 991 * @hide 992 */ 993 public int affiliatedTaskColor; 994 995 /** 996 * The component launched as the first activity in the task. 997 * This can be considered the "application" of this task. 998 */ 999 public ComponentName baseActivity; 1000 1001 /** 1002 * The activity component at the top of the history stack of the task. 1003 * This is what the user is currently doing. 1004 */ 1005 public ComponentName topActivity; 1006 1007 /** 1008 * Number of activities in this task. 1009 */ 1010 public int numActivities; 1011 1012 public RecentTaskInfo() { 1013 } 1014 1015 @Override 1016 public int describeContents() { 1017 return 0; 1018 } 1019 1020 @Override 1021 public void writeToParcel(Parcel dest, int flags) { 1022 dest.writeInt(id); 1023 dest.writeInt(persistentId); 1024 if (baseIntent != null) { 1025 dest.writeInt(1); 1026 baseIntent.writeToParcel(dest, 0); 1027 } else { 1028 dest.writeInt(0); 1029 } 1030 ComponentName.writeToParcel(origActivity, dest); 1031 ComponentName.writeToParcel(realActivity, dest); 1032 TextUtils.writeToParcel(description, dest, 1033 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1034 if (taskDescription != null) { 1035 dest.writeInt(1); 1036 taskDescription.writeToParcel(dest, 0); 1037 } else { 1038 dest.writeInt(0); 1039 } 1040 dest.writeInt(stackId); 1041 dest.writeInt(userId); 1042 dest.writeLong(firstActiveTime); 1043 dest.writeLong(lastActiveTime); 1044 dest.writeInt(affiliatedTaskId); 1045 dest.writeInt(affiliatedTaskColor); 1046 ComponentName.writeToParcel(baseActivity, dest); 1047 ComponentName.writeToParcel(topActivity, dest); 1048 dest.writeInt(numActivities); 1049 } 1050 1051 public void readFromParcel(Parcel source) { 1052 id = source.readInt(); 1053 persistentId = source.readInt(); 1054 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1055 origActivity = ComponentName.readFromParcel(source); 1056 realActivity = ComponentName.readFromParcel(source); 1057 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1058 taskDescription = source.readInt() > 0 ? 1059 TaskDescription.CREATOR.createFromParcel(source) : null; 1060 stackId = source.readInt(); 1061 userId = source.readInt(); 1062 firstActiveTime = source.readLong(); 1063 lastActiveTime = source.readLong(); 1064 affiliatedTaskId = source.readInt(); 1065 affiliatedTaskColor = source.readInt(); 1066 baseActivity = ComponentName.readFromParcel(source); 1067 topActivity = ComponentName.readFromParcel(source); 1068 numActivities = source.readInt(); 1069 } 1070 1071 public static final Creator<RecentTaskInfo> CREATOR 1072 = new Creator<RecentTaskInfo>() { 1073 public RecentTaskInfo createFromParcel(Parcel source) { 1074 return new RecentTaskInfo(source); 1075 } 1076 public RecentTaskInfo[] newArray(int size) { 1077 return new RecentTaskInfo[size]; 1078 } 1079 }; 1080 1081 private RecentTaskInfo(Parcel source) { 1082 readFromParcel(source); 1083 } 1084 } 1085 1086 /** 1087 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1088 * that have set their 1089 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1090 */ 1091 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1092 1093 /** 1094 * Provides a list that does not contain any 1095 * recent tasks that currently are not available to the user. 1096 */ 1097 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1098 1099 /** 1100 * Provides a list that contains recent tasks for all 1101 * profiles of a user. 1102 * @hide 1103 */ 1104 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1105 1106 /** 1107 * Ignores all tasks that are on the home stack. 1108 * @hide 1109 */ 1110 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1111 1112 /** 1113 * <p></p>Return a list of the tasks that the user has recently launched, with 1114 * the most recent being first and older ones after in order. 1115 * 1116 * <p><b>Note: this method is only intended for debugging and presenting 1117 * task management user interfaces</b>. This should never be used for 1118 * core logic in an application, such as deciding between different 1119 * behaviors based on the information found here. Such uses are 1120 * <em>not</em> supported, and will likely break in the future. For 1121 * example, if multiple applications can be actively running at the 1122 * same time, assumptions made about the meaning of the data here for 1123 * purposes of control flow will be incorrect.</p> 1124 * 1125 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1126 * no longer available to third party applications: the introduction of 1127 * document-centric recents means 1128 * it can leak personal information to the caller. For backwards compatibility, 1129 * it will still return a small subset of its data: at least the caller's 1130 * own tasks (though see {@link #getAppTasks()} for the correct supported 1131 * way to retrieve that information), and possibly some other tasks 1132 * such as home that are known to not be sensitive. 1133 * 1134 * @param maxNum The maximum number of entries to return in the list. The 1135 * actual number returned may be smaller, depending on how many tasks the 1136 * user has started and the maximum number the system can remember. 1137 * @param flags Information about what to return. May be any combination 1138 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1139 * 1140 * @return Returns a list of RecentTaskInfo records describing each of 1141 * the recent tasks. 1142 */ 1143 @Deprecated 1144 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1145 throws SecurityException { 1146 try { 1147 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1148 flags, UserHandle.myUserId()); 1149 } catch (RemoteException e) { 1150 // System dead, we will be dead too soon! 1151 return null; 1152 } 1153 } 1154 1155 /** 1156 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1157 * specific user. It requires holding 1158 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1159 * @param maxNum The maximum number of entries to return in the list. The 1160 * actual number returned may be smaller, depending on how many tasks the 1161 * user has started and the maximum number the system can remember. 1162 * @param flags Information about what to return. May be any combination 1163 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1164 * 1165 * @return Returns a list of RecentTaskInfo records describing each of 1166 * the recent tasks. Most recently activated tasks go first. 1167 * 1168 * @hide 1169 */ 1170 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1171 throws SecurityException { 1172 try { 1173 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1174 flags, userId); 1175 } catch (RemoteException e) { 1176 // System dead, we will be dead too soon! 1177 return null; 1178 } 1179 } 1180 1181 /** 1182 * Information you can retrieve about a particular task that is currently 1183 * "running" in the system. Note that a running task does not mean the 1184 * given task actually has a process it is actively running in; it simply 1185 * means that the user has gone to it and never closed it, but currently 1186 * the system may have killed its process and is only holding on to its 1187 * last state in order to restart it when the user returns. 1188 */ 1189 public static class RunningTaskInfo implements Parcelable { 1190 /** 1191 * A unique identifier for this task. 1192 */ 1193 public int id; 1194 1195 /** 1196 * The component launched as the first activity in the task. This can 1197 * be considered the "application" of this task. 1198 */ 1199 public ComponentName baseActivity; 1200 1201 /** 1202 * The activity component at the top of the history stack of the task. 1203 * This is what the user is currently doing. 1204 */ 1205 public ComponentName topActivity; 1206 1207 /** 1208 * Thumbnail representation of the task's current state. Currently 1209 * always null. 1210 */ 1211 public Bitmap thumbnail; 1212 1213 /** 1214 * Description of the task's current state. 1215 */ 1216 public CharSequence description; 1217 1218 /** 1219 * Number of activities in this task. 1220 */ 1221 public int numActivities; 1222 1223 /** 1224 * Number of activities that are currently running (not stopped 1225 * and persisted) in this task. 1226 */ 1227 public int numRunning; 1228 1229 /** 1230 * Last time task was run. For sorting. 1231 * @hide 1232 */ 1233 public long lastActiveTime; 1234 1235 public RunningTaskInfo() { 1236 } 1237 1238 public int describeContents() { 1239 return 0; 1240 } 1241 1242 public void writeToParcel(Parcel dest, int flags) { 1243 dest.writeInt(id); 1244 ComponentName.writeToParcel(baseActivity, dest); 1245 ComponentName.writeToParcel(topActivity, dest); 1246 if (thumbnail != null) { 1247 dest.writeInt(1); 1248 thumbnail.writeToParcel(dest, 0); 1249 } else { 1250 dest.writeInt(0); 1251 } 1252 TextUtils.writeToParcel(description, dest, 1253 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1254 dest.writeInt(numActivities); 1255 dest.writeInt(numRunning); 1256 } 1257 1258 public void readFromParcel(Parcel source) { 1259 id = source.readInt(); 1260 baseActivity = ComponentName.readFromParcel(source); 1261 topActivity = ComponentName.readFromParcel(source); 1262 if (source.readInt() != 0) { 1263 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1264 } else { 1265 thumbnail = null; 1266 } 1267 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1268 numActivities = source.readInt(); 1269 numRunning = source.readInt(); 1270 } 1271 1272 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1273 public RunningTaskInfo createFromParcel(Parcel source) { 1274 return new RunningTaskInfo(source); 1275 } 1276 public RunningTaskInfo[] newArray(int size) { 1277 return new RunningTaskInfo[size]; 1278 } 1279 }; 1280 1281 private RunningTaskInfo(Parcel source) { 1282 readFromParcel(source); 1283 } 1284 } 1285 1286 /** 1287 * Get the list of tasks associated with the calling application. 1288 * 1289 * @return The list of tasks associated with the application making this call. 1290 * @throws SecurityException 1291 */ 1292 public List<ActivityManager.AppTask> getAppTasks() { 1293 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1294 List<IAppTask> appTasks; 1295 try { 1296 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1297 } catch (RemoteException e) { 1298 // System dead, we will be dead too soon! 1299 return null; 1300 } 1301 int numAppTasks = appTasks.size(); 1302 for (int i = 0; i < numAppTasks; i++) { 1303 tasks.add(new AppTask(appTasks.get(i))); 1304 } 1305 return tasks; 1306 } 1307 1308 /** 1309 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1310 * with {@link #addAppTask}. 1311 */ 1312 public Size getAppTaskThumbnailSize() { 1313 synchronized (this) { 1314 ensureAppTaskThumbnailSizeLocked(); 1315 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1316 } 1317 } 1318 1319 private void ensureAppTaskThumbnailSizeLocked() { 1320 if (mAppTaskThumbnailSize == null) { 1321 try { 1322 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1323 } catch (RemoteException e) { 1324 throw new IllegalStateException("System dead?", e); 1325 } 1326 } 1327 } 1328 1329 /** 1330 * Add a new {@link AppTask} for the calling application. This will create a new 1331 * recents entry that is added to the <b>end</b> of all existing recents. 1332 * 1333 * @param activity The activity that is adding the entry. This is used to help determine 1334 * the context that the new recents entry will be in. 1335 * @param intent The Intent that describes the recents entry. This is the same Intent that 1336 * you would have used to launch the activity for it. In generally you will want to set 1337 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1338 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1339 * entry will exist without an activity, so it doesn't make sense to not retain it when 1340 * its activity disappears. The given Intent here also must have an explicit ComponentName 1341 * set on it. 1342 * @param description Optional additional description information. 1343 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1344 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1345 * recreated in your process, probably in a way you don't like, before the recents entry 1346 * is added. 1347 * 1348 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1349 * most likely cause of failure is that there is no more room for more tasks for your app. 1350 */ 1351 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1352 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1353 Point size; 1354 synchronized (this) { 1355 ensureAppTaskThumbnailSizeLocked(); 1356 size = mAppTaskThumbnailSize; 1357 } 1358 final int tw = thumbnail.getWidth(); 1359 final int th = thumbnail.getHeight(); 1360 if (tw != size.x || th != size.y) { 1361 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1362 1363 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1364 float scale; 1365 float dx = 0, dy = 0; 1366 if (tw * size.x > size.y * th) { 1367 scale = (float) size.x / (float) th; 1368 dx = (size.y - tw * scale) * 0.5f; 1369 } else { 1370 scale = (float) size.y / (float) tw; 1371 dy = (size.x - th * scale) * 0.5f; 1372 } 1373 Matrix matrix = new Matrix(); 1374 matrix.setScale(scale, scale); 1375 matrix.postTranslate((int) (dx + 0.5f), 0); 1376 1377 Canvas canvas = new Canvas(bm); 1378 canvas.drawBitmap(thumbnail, matrix, null); 1379 canvas.setBitmap(null); 1380 1381 thumbnail = bm; 1382 } 1383 if (description == null) { 1384 description = new TaskDescription(); 1385 } 1386 try { 1387 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1388 intent, description, thumbnail); 1389 } catch (RemoteException e) { 1390 throw new IllegalStateException("System dead?", e); 1391 } 1392 } 1393 1394 /** 1395 * Return a list of the tasks that are currently running, with 1396 * the most recent being first and older ones after in order. Note that 1397 * "running" does not mean any of the task's code is currently loaded or 1398 * activity -- the task may have been frozen by the system, so that it 1399 * can be restarted in its previous state when next brought to the 1400 * foreground. 1401 * 1402 * <p><b>Note: this method is only intended for debugging and presenting 1403 * task management user interfaces</b>. This should never be used for 1404 * core logic in an application, such as deciding between different 1405 * behaviors based on the information found here. Such uses are 1406 * <em>not</em> supported, and will likely break in the future. For 1407 * example, if multiple applications can be actively running at the 1408 * same time, assumptions made about the meaning of the data here for 1409 * purposes of control flow will be incorrect.</p> 1410 * 1411 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1412 * is no longer available to third party 1413 * applications: the introduction of document-centric recents means 1414 * it can leak person information to the caller. For backwards compatibility, 1415 * it will still retu rn a small subset of its data: at least the caller's 1416 * own tasks, and possibly some other tasks 1417 * such as home that are known to not be sensitive. 1418 * 1419 * @param maxNum The maximum number of entries to return in the list. The 1420 * actual number returned may be smaller, depending on how many tasks the 1421 * user has started. 1422 * 1423 * @return Returns a list of RunningTaskInfo records describing each of 1424 * the running tasks. 1425 */ 1426 @Deprecated 1427 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1428 throws SecurityException { 1429 try { 1430 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1431 } catch (RemoteException e) { 1432 // System dead, we will be dead too soon! 1433 return null; 1434 } 1435 } 1436 1437 /** 1438 * Completely remove the given task. 1439 * 1440 * @param taskId Identifier of the task to be removed. 1441 * @return Returns true if the given task was found and removed. 1442 * 1443 * @hide 1444 */ 1445 public boolean removeTask(int taskId) throws SecurityException { 1446 try { 1447 return ActivityManagerNative.getDefault().removeTask(taskId); 1448 } catch (RemoteException e) { 1449 // System dead, we will be dead too soon! 1450 return false; 1451 } 1452 } 1453 1454 /** @hide */ 1455 public static class TaskThumbnail implements Parcelable { 1456 public Bitmap mainThumbnail; 1457 public ParcelFileDescriptor thumbnailFileDescriptor; 1458 1459 public TaskThumbnail() { 1460 } 1461 1462 public int describeContents() { 1463 if (thumbnailFileDescriptor != null) { 1464 return thumbnailFileDescriptor.describeContents(); 1465 } 1466 return 0; 1467 } 1468 1469 public void writeToParcel(Parcel dest, int flags) { 1470 if (mainThumbnail != null) { 1471 dest.writeInt(1); 1472 mainThumbnail.writeToParcel(dest, flags); 1473 } else { 1474 dest.writeInt(0); 1475 } 1476 if (thumbnailFileDescriptor != null) { 1477 dest.writeInt(1); 1478 thumbnailFileDescriptor.writeToParcel(dest, flags); 1479 } else { 1480 dest.writeInt(0); 1481 } 1482 } 1483 1484 public void readFromParcel(Parcel source) { 1485 if (source.readInt() != 0) { 1486 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1487 } else { 1488 mainThumbnail = null; 1489 } 1490 if (source.readInt() != 0) { 1491 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1492 } else { 1493 thumbnailFileDescriptor = null; 1494 } 1495 } 1496 1497 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1498 public TaskThumbnail createFromParcel(Parcel source) { 1499 return new TaskThumbnail(source); 1500 } 1501 public TaskThumbnail[] newArray(int size) { 1502 return new TaskThumbnail[size]; 1503 } 1504 }; 1505 1506 private TaskThumbnail(Parcel source) { 1507 readFromParcel(source); 1508 } 1509 } 1510 1511 /** @hide */ 1512 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1513 try { 1514 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1515 } catch (RemoteException e) { 1516 // System dead, we will be dead too soon! 1517 return null; 1518 } 1519 } 1520 1521 /** @hide */ 1522 public boolean isInHomeStack(int taskId) { 1523 try { 1524 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1525 } catch (RemoteException e) { 1526 // System dead, we will be dead too soon! 1527 return false; 1528 } 1529 } 1530 1531 /** 1532 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1533 * activity along with the task, so it is positioned immediately behind 1534 * the task. 1535 */ 1536 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1537 1538 /** 1539 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1540 * user-instigated action, so the current activity will not receive a 1541 * hint that the user is leaving. 1542 */ 1543 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1544 1545 /** 1546 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1547 * with a null options argument. 1548 * 1549 * @param taskId The identifier of the task to be moved, as found in 1550 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1551 * @param flags Additional operational flags, 0 or more of 1552 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1553 */ 1554 public void moveTaskToFront(int taskId, int flags) { 1555 moveTaskToFront(taskId, flags, null); 1556 } 1557 1558 /** 1559 * Ask that the task associated with a given task ID be moved to the 1560 * front of the stack, so it is now visible to the user. Requires that 1561 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1562 * or a SecurityException will be thrown. 1563 * 1564 * @param taskId The identifier of the task to be moved, as found in 1565 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1566 * @param flags Additional operational flags, 0 or more of 1567 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1568 * @param options Additional options for the operation, either null or 1569 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1570 * Context.startActivity(Intent, Bundle)}. 1571 */ 1572 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1573 try { 1574 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1575 } catch (RemoteException e) { 1576 // System dead, we will be dead too soon! 1577 } 1578 } 1579 1580 /** 1581 * Information you can retrieve about a particular Service that is 1582 * currently running in the system. 1583 */ 1584 public static class RunningServiceInfo implements Parcelable { 1585 /** 1586 * The service component. 1587 */ 1588 public ComponentName service; 1589 1590 /** 1591 * If non-zero, this is the process the service is running in. 1592 */ 1593 public int pid; 1594 1595 /** 1596 * The UID that owns this service. 1597 */ 1598 public int uid; 1599 1600 /** 1601 * The name of the process this service runs in. 1602 */ 1603 public String process; 1604 1605 /** 1606 * Set to true if the service has asked to run as a foreground process. 1607 */ 1608 public boolean foreground; 1609 1610 /** 1611 * The time when the service was first made active, either by someone 1612 * starting or binding to it. This 1613 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1614 */ 1615 public long activeSince; 1616 1617 /** 1618 * Set to true if this service has been explicitly started. 1619 */ 1620 public boolean started; 1621 1622 /** 1623 * Number of clients connected to the service. 1624 */ 1625 public int clientCount; 1626 1627 /** 1628 * Number of times the service's process has crashed while the service 1629 * is running. 1630 */ 1631 public int crashCount; 1632 1633 /** 1634 * The time when there was last activity in the service (either 1635 * explicit requests to start it or clients binding to it). This 1636 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1637 */ 1638 public long lastActivityTime; 1639 1640 /** 1641 * If non-zero, this service is not currently running, but scheduled to 1642 * restart at the given time. 1643 */ 1644 public long restarting; 1645 1646 /** 1647 * Bit for {@link #flags}: set if this service has been 1648 * explicitly started. 1649 */ 1650 public static final int FLAG_STARTED = 1<<0; 1651 1652 /** 1653 * Bit for {@link #flags}: set if the service has asked to 1654 * run as a foreground process. 1655 */ 1656 public static final int FLAG_FOREGROUND = 1<<1; 1657 1658 /** 1659 * Bit for {@link #flags): set if the service is running in a 1660 * core system process. 1661 */ 1662 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1663 1664 /** 1665 * Bit for {@link #flags): set if the service is running in a 1666 * persistent process. 1667 */ 1668 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1669 1670 /** 1671 * Running flags. 1672 */ 1673 public int flags; 1674 1675 /** 1676 * For special services that are bound to by system code, this is 1677 * the package that holds the binding. 1678 */ 1679 public String clientPackage; 1680 1681 /** 1682 * For special services that are bound to by system code, this is 1683 * a string resource providing a user-visible label for who the 1684 * client is. 1685 */ 1686 public int clientLabel; 1687 1688 public RunningServiceInfo() { 1689 } 1690 1691 public int describeContents() { 1692 return 0; 1693 } 1694 1695 public void writeToParcel(Parcel dest, int flags) { 1696 ComponentName.writeToParcel(service, dest); 1697 dest.writeInt(pid); 1698 dest.writeInt(uid); 1699 dest.writeString(process); 1700 dest.writeInt(foreground ? 1 : 0); 1701 dest.writeLong(activeSince); 1702 dest.writeInt(started ? 1 : 0); 1703 dest.writeInt(clientCount); 1704 dest.writeInt(crashCount); 1705 dest.writeLong(lastActivityTime); 1706 dest.writeLong(restarting); 1707 dest.writeInt(this.flags); 1708 dest.writeString(clientPackage); 1709 dest.writeInt(clientLabel); 1710 } 1711 1712 public void readFromParcel(Parcel source) { 1713 service = ComponentName.readFromParcel(source); 1714 pid = source.readInt(); 1715 uid = source.readInt(); 1716 process = source.readString(); 1717 foreground = source.readInt() != 0; 1718 activeSince = source.readLong(); 1719 started = source.readInt() != 0; 1720 clientCount = source.readInt(); 1721 crashCount = source.readInt(); 1722 lastActivityTime = source.readLong(); 1723 restarting = source.readLong(); 1724 flags = source.readInt(); 1725 clientPackage = source.readString(); 1726 clientLabel = source.readInt(); 1727 } 1728 1729 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1730 public RunningServiceInfo createFromParcel(Parcel source) { 1731 return new RunningServiceInfo(source); 1732 } 1733 public RunningServiceInfo[] newArray(int size) { 1734 return new RunningServiceInfo[size]; 1735 } 1736 }; 1737 1738 private RunningServiceInfo(Parcel source) { 1739 readFromParcel(source); 1740 } 1741 } 1742 1743 /** 1744 * Return a list of the services that are currently running. 1745 * 1746 * <p><b>Note: this method is only intended for debugging or implementing 1747 * service management type user interfaces.</b></p> 1748 * 1749 * @param maxNum The maximum number of entries to return in the list. The 1750 * actual number returned may be smaller, depending on how many services 1751 * are running. 1752 * 1753 * @return Returns a list of RunningServiceInfo records describing each of 1754 * the running tasks. 1755 */ 1756 public List<RunningServiceInfo> getRunningServices(int maxNum) 1757 throws SecurityException { 1758 try { 1759 return ActivityManagerNative.getDefault() 1760 .getServices(maxNum, 0); 1761 } catch (RemoteException e) { 1762 // System dead, we will be dead too soon! 1763 return null; 1764 } 1765 } 1766 1767 /** 1768 * Returns a PendingIntent you can start to show a control panel for the 1769 * given running service. If the service does not have a control panel, 1770 * null is returned. 1771 */ 1772 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1773 throws SecurityException { 1774 try { 1775 return ActivityManagerNative.getDefault() 1776 .getRunningServiceControlPanel(service); 1777 } catch (RemoteException e) { 1778 // System dead, we will be dead too soon! 1779 return null; 1780 } 1781 } 1782 1783 /** 1784 * Information you can retrieve about the available memory through 1785 * {@link ActivityManager#getMemoryInfo}. 1786 */ 1787 public static class MemoryInfo implements Parcelable { 1788 /** 1789 * The available memory on the system. This number should not 1790 * be considered absolute: due to the nature of the kernel, a significant 1791 * portion of this memory is actually in use and needed for the overall 1792 * system to run well. 1793 */ 1794 public long availMem; 1795 1796 /** 1797 * The total memory accessible by the kernel. This is basically the 1798 * RAM size of the device, not including below-kernel fixed allocations 1799 * like DMA buffers, RAM for the baseband CPU, etc. 1800 */ 1801 public long totalMem; 1802 1803 /** 1804 * The threshold of {@link #availMem} at which we consider memory to be 1805 * low and start killing background services and other non-extraneous 1806 * processes. 1807 */ 1808 public long threshold; 1809 1810 /** 1811 * Set to true if the system considers itself to currently be in a low 1812 * memory situation. 1813 */ 1814 public boolean lowMemory; 1815 1816 /** @hide */ 1817 public long hiddenAppThreshold; 1818 /** @hide */ 1819 public long secondaryServerThreshold; 1820 /** @hide */ 1821 public long visibleAppThreshold; 1822 /** @hide */ 1823 public long foregroundAppThreshold; 1824 1825 public MemoryInfo() { 1826 } 1827 1828 public int describeContents() { 1829 return 0; 1830 } 1831 1832 public void writeToParcel(Parcel dest, int flags) { 1833 dest.writeLong(availMem); 1834 dest.writeLong(totalMem); 1835 dest.writeLong(threshold); 1836 dest.writeInt(lowMemory ? 1 : 0); 1837 dest.writeLong(hiddenAppThreshold); 1838 dest.writeLong(secondaryServerThreshold); 1839 dest.writeLong(visibleAppThreshold); 1840 dest.writeLong(foregroundAppThreshold); 1841 } 1842 1843 public void readFromParcel(Parcel source) { 1844 availMem = source.readLong(); 1845 totalMem = source.readLong(); 1846 threshold = source.readLong(); 1847 lowMemory = source.readInt() != 0; 1848 hiddenAppThreshold = source.readLong(); 1849 secondaryServerThreshold = source.readLong(); 1850 visibleAppThreshold = source.readLong(); 1851 foregroundAppThreshold = source.readLong(); 1852 } 1853 1854 public static final Creator<MemoryInfo> CREATOR 1855 = new Creator<MemoryInfo>() { 1856 public MemoryInfo createFromParcel(Parcel source) { 1857 return new MemoryInfo(source); 1858 } 1859 public MemoryInfo[] newArray(int size) { 1860 return new MemoryInfo[size]; 1861 } 1862 }; 1863 1864 private MemoryInfo(Parcel source) { 1865 readFromParcel(source); 1866 } 1867 } 1868 1869 /** 1870 * Return general information about the memory state of the system. This 1871 * can be used to help decide how to manage your own memory, though note 1872 * that polling is not recommended and 1873 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1874 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1875 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1876 * level of your process as needed, which gives a better hint for how to 1877 * manage its memory. 1878 */ 1879 public void getMemoryInfo(MemoryInfo outInfo) { 1880 try { 1881 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1882 } catch (RemoteException e) { 1883 } 1884 } 1885 1886 /** 1887 * Information you can retrieve about an ActivityStack in the system. 1888 * @hide 1889 */ 1890 public static class StackInfo implements Parcelable { 1891 public int stackId; 1892 public Rect bounds = new Rect(); 1893 public int[] taskIds; 1894 public String[] taskNames; 1895 public Rect[] taskBounds; 1896 public int displayId; 1897 1898 @Override 1899 public int describeContents() { 1900 return 0; 1901 } 1902 1903 @Override 1904 public void writeToParcel(Parcel dest, int flags) { 1905 dest.writeInt(stackId); 1906 dest.writeInt(bounds.left); 1907 dest.writeInt(bounds.top); 1908 dest.writeInt(bounds.right); 1909 dest.writeInt(bounds.bottom); 1910 dest.writeIntArray(taskIds); 1911 dest.writeStringArray(taskNames); 1912 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 1913 dest.writeInt(boundsCount); 1914 for (int i = 0; i < boundsCount; i++) { 1915 dest.writeInt(taskBounds[i].left); 1916 dest.writeInt(taskBounds[i].top); 1917 dest.writeInt(taskBounds[i].right); 1918 dest.writeInt(taskBounds[i].bottom); 1919 } 1920 dest.writeInt(displayId); 1921 } 1922 1923 public void readFromParcel(Parcel source) { 1924 stackId = source.readInt(); 1925 bounds = new Rect( 1926 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1927 taskIds = source.createIntArray(); 1928 taskNames = source.createStringArray(); 1929 final int boundsCount = source.readInt(); 1930 if (boundsCount > 0) { 1931 taskBounds = new Rect[boundsCount]; 1932 for (int i = 0; i < boundsCount; i++) { 1933 taskBounds[i] = new Rect(); 1934 taskBounds[i].set( 1935 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1936 } 1937 } else { 1938 taskBounds = null; 1939 } 1940 displayId = source.readInt(); 1941 } 1942 1943 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1944 @Override 1945 public StackInfo createFromParcel(Parcel source) { 1946 return new StackInfo(source); 1947 } 1948 @Override 1949 public StackInfo[] newArray(int size) { 1950 return new StackInfo[size]; 1951 } 1952 }; 1953 1954 public StackInfo() { 1955 } 1956 1957 private StackInfo(Parcel source) { 1958 readFromParcel(source); 1959 } 1960 1961 public String toString(String prefix) { 1962 StringBuilder sb = new StringBuilder(256); 1963 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1964 sb.append(" bounds="); sb.append(bounds.toShortString()); 1965 sb.append(" displayId="); sb.append(displayId); 1966 sb.append("\n"); 1967 prefix = prefix + " "; 1968 for (int i = 0; i < taskIds.length; ++i) { 1969 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1970 sb.append(": "); sb.append(taskNames[i]); 1971 if (taskBounds != null) { 1972 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 1973 } 1974 sb.append("\n"); 1975 } 1976 return sb.toString(); 1977 } 1978 1979 @Override 1980 public String toString() { 1981 return toString(""); 1982 } 1983 } 1984 1985 /** 1986 * @hide 1987 */ 1988 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 1989 try { 1990 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 1991 observer, UserHandle.myUserId()); 1992 } catch (RemoteException e) { 1993 return false; 1994 } 1995 } 1996 1997 /** 1998 * Permits an application to erase its own data from disk. This is equivalent to 1999 * the user choosing to clear the app's data from within the device settings UI. It 2000 * erases all dynamic data associated with the app -- its private data and data in its 2001 * private area on external storage -- but does not remove the installed application 2002 * itself, nor any OBB files. 2003 * 2004 * @return {@code true} if the application successfully requested that the application's 2005 * data be erased; {@code false} otherwise. 2006 */ 2007 public boolean clearApplicationUserData() { 2008 return clearApplicationUserData(mContext.getPackageName(), null); 2009 } 2010 2011 /** 2012 * Information you can retrieve about any processes that are in an error condition. 2013 */ 2014 public static class ProcessErrorStateInfo implements Parcelable { 2015 /** 2016 * Condition codes 2017 */ 2018 public static final int NO_ERROR = 0; 2019 public static final int CRASHED = 1; 2020 public static final int NOT_RESPONDING = 2; 2021 2022 /** 2023 * The condition that the process is in. 2024 */ 2025 public int condition; 2026 2027 /** 2028 * The process name in which the crash or error occurred. 2029 */ 2030 public String processName; 2031 2032 /** 2033 * The pid of this process; 0 if none 2034 */ 2035 public int pid; 2036 2037 /** 2038 * The kernel user-ID that has been assigned to this process; 2039 * currently this is not a unique ID (multiple applications can have 2040 * the same uid). 2041 */ 2042 public int uid; 2043 2044 /** 2045 * The activity name associated with the error, if known. May be null. 2046 */ 2047 public String tag; 2048 2049 /** 2050 * A short message describing the error condition. 2051 */ 2052 public String shortMsg; 2053 2054 /** 2055 * A long message describing the error condition. 2056 */ 2057 public String longMsg; 2058 2059 /** 2060 * The stack trace where the error originated. May be null. 2061 */ 2062 public String stackTrace; 2063 2064 /** 2065 * to be deprecated: This value will always be null. 2066 */ 2067 public byte[] crashData = null; 2068 2069 public ProcessErrorStateInfo() { 2070 } 2071 2072 @Override 2073 public int describeContents() { 2074 return 0; 2075 } 2076 2077 @Override 2078 public void writeToParcel(Parcel dest, int flags) { 2079 dest.writeInt(condition); 2080 dest.writeString(processName); 2081 dest.writeInt(pid); 2082 dest.writeInt(uid); 2083 dest.writeString(tag); 2084 dest.writeString(shortMsg); 2085 dest.writeString(longMsg); 2086 dest.writeString(stackTrace); 2087 } 2088 2089 public void readFromParcel(Parcel source) { 2090 condition = source.readInt(); 2091 processName = source.readString(); 2092 pid = source.readInt(); 2093 uid = source.readInt(); 2094 tag = source.readString(); 2095 shortMsg = source.readString(); 2096 longMsg = source.readString(); 2097 stackTrace = source.readString(); 2098 } 2099 2100 public static final Creator<ProcessErrorStateInfo> CREATOR = 2101 new Creator<ProcessErrorStateInfo>() { 2102 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2103 return new ProcessErrorStateInfo(source); 2104 } 2105 public ProcessErrorStateInfo[] newArray(int size) { 2106 return new ProcessErrorStateInfo[size]; 2107 } 2108 }; 2109 2110 private ProcessErrorStateInfo(Parcel source) { 2111 readFromParcel(source); 2112 } 2113 } 2114 2115 /** 2116 * Returns a list of any processes that are currently in an error condition. The result 2117 * will be null if all processes are running properly at this time. 2118 * 2119 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2120 * current error conditions (it will not return an empty list). This list ordering is not 2121 * specified. 2122 */ 2123 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2124 try { 2125 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2126 } catch (RemoteException e) { 2127 return null; 2128 } 2129 } 2130 2131 /** 2132 * Information you can retrieve about a running process. 2133 */ 2134 public static class RunningAppProcessInfo implements Parcelable { 2135 /** 2136 * The name of the process that this object is associated with 2137 */ 2138 public String processName; 2139 2140 /** 2141 * The pid of this process; 0 if none 2142 */ 2143 public int pid; 2144 2145 /** 2146 * The user id of this process. 2147 */ 2148 public int uid; 2149 2150 /** 2151 * All packages that have been loaded into the process. 2152 */ 2153 public String pkgList[]; 2154 2155 /** 2156 * Constant for {@link #flags}: this is an app that is unable to 2157 * correctly save its state when going to the background, 2158 * so it can not be killed while in the background. 2159 * @hide 2160 */ 2161 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2162 2163 /** 2164 * Constant for {@link #flags}: this process is associated with a 2165 * persistent system app. 2166 * @hide 2167 */ 2168 public static final int FLAG_PERSISTENT = 1<<1; 2169 2170 /** 2171 * Constant for {@link #flags}: this process is associated with a 2172 * persistent system app. 2173 * @hide 2174 */ 2175 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2176 2177 /** 2178 * Flags of information. May be any of 2179 * {@link #FLAG_CANT_SAVE_STATE}. 2180 * @hide 2181 */ 2182 public int flags; 2183 2184 /** 2185 * Last memory trim level reported to the process: corresponds to 2186 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2187 * ComponentCallbacks2.onTrimMemory(int)}. 2188 */ 2189 public int lastTrimLevel; 2190 2191 /** 2192 * Constant for {@link #importance}: This process is running the 2193 * foreground UI; that is, it is the thing currently at the top of the screen 2194 * that the user is interacting with. 2195 */ 2196 public static final int IMPORTANCE_FOREGROUND = 100; 2197 2198 /** 2199 * Constant for {@link #importance}: This process is running a foreground 2200 * service, for example to perform music playback even while the user is 2201 * not immediately in the app. This generally indicates that the process 2202 * is doing something the user actively cares about. 2203 */ 2204 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2205 2206 /** 2207 * Constant for {@link #importance}: This process is running the foreground 2208 * UI, but the device is asleep so it is not visible to the user. This means 2209 * the user is not really aware of the process, because they can not see or 2210 * interact with it, but it is quite important because it what they expect to 2211 * return to once unlocking the device. 2212 */ 2213 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2214 2215 /** 2216 * Constant for {@link #importance}: This process is running something 2217 * that is actively visible to the user, though not in the immediate 2218 * foreground. This may be running a window that is behind the current 2219 * foreground (so paused and with its state saved, not interacting with 2220 * the user, but visible to them to some degree); it may also be running 2221 * other services under the system's control that it inconsiders important. 2222 */ 2223 public static final int IMPORTANCE_VISIBLE = 200; 2224 2225 /** 2226 * Constant for {@link #importance}: This process is not something the user 2227 * is directly aware of, but is otherwise perceptable to them to some degree. 2228 */ 2229 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2230 2231 /** 2232 * Constant for {@link #importance}: This process is running an 2233 * application that can not save its state, and thus can't be killed 2234 * while in the background. 2235 * @hide 2236 */ 2237 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2238 2239 /** 2240 * Constant for {@link #importance}: This process is contains services 2241 * that should remain running. These are background services apps have 2242 * started, not something the user is aware of, so they may be killed by 2243 * the system relatively freely (though it is generally desired that they 2244 * stay running as long as they want to). 2245 */ 2246 public static final int IMPORTANCE_SERVICE = 300; 2247 2248 /** 2249 * Constant for {@link #importance}: This process process contains 2250 * background code that is expendable. 2251 */ 2252 public static final int IMPORTANCE_BACKGROUND = 400; 2253 2254 /** 2255 * Constant for {@link #importance}: This process is empty of any 2256 * actively running code. 2257 */ 2258 public static final int IMPORTANCE_EMPTY = 500; 2259 2260 /** 2261 * Constant for {@link #importance}: This process does not exist. 2262 */ 2263 public static final int IMPORTANCE_GONE = 1000; 2264 2265 /** @hide */ 2266 public static int procStateToImportance(int procState) { 2267 if (procState == PROCESS_STATE_NONEXISTENT) { 2268 return IMPORTANCE_GONE; 2269 } else if (procState >= PROCESS_STATE_HOME) { 2270 return IMPORTANCE_BACKGROUND; 2271 } else if (procState >= PROCESS_STATE_SERVICE) { 2272 return IMPORTANCE_SERVICE; 2273 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2274 return IMPORTANCE_CANT_SAVE_STATE; 2275 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2276 return IMPORTANCE_PERCEPTIBLE; 2277 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2278 return IMPORTANCE_VISIBLE; 2279 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2280 return IMPORTANCE_TOP_SLEEPING; 2281 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2282 return IMPORTANCE_FOREGROUND_SERVICE; 2283 } else { 2284 return IMPORTANCE_FOREGROUND; 2285 } 2286 } 2287 2288 /** 2289 * The relative importance level that the system places on this 2290 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2291 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2292 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2293 * constants are numbered so that "more important" values are always 2294 * smaller than "less important" values. 2295 */ 2296 public int importance; 2297 2298 /** 2299 * An additional ordering within a particular {@link #importance} 2300 * category, providing finer-grained information about the relative 2301 * utility of processes within a category. This number means nothing 2302 * except that a smaller values are more recently used (and thus 2303 * more important). Currently an LRU value is only maintained for 2304 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2305 * be maintained in the future. 2306 */ 2307 public int lru; 2308 2309 /** 2310 * Constant for {@link #importanceReasonCode}: nothing special has 2311 * been specified for the reason for this level. 2312 */ 2313 public static final int REASON_UNKNOWN = 0; 2314 2315 /** 2316 * Constant for {@link #importanceReasonCode}: one of the application's 2317 * content providers is being used by another process. The pid of 2318 * the client process is in {@link #importanceReasonPid} and the 2319 * target provider in this process is in 2320 * {@link #importanceReasonComponent}. 2321 */ 2322 public static final int REASON_PROVIDER_IN_USE = 1; 2323 2324 /** 2325 * Constant for {@link #importanceReasonCode}: one of the application's 2326 * content providers is being used by another process. The pid of 2327 * the client process is in {@link #importanceReasonPid} and the 2328 * target provider in this process is in 2329 * {@link #importanceReasonComponent}. 2330 */ 2331 public static final int REASON_SERVICE_IN_USE = 2; 2332 2333 /** 2334 * The reason for {@link #importance}, if any. 2335 */ 2336 public int importanceReasonCode; 2337 2338 /** 2339 * For the specified values of {@link #importanceReasonCode}, this 2340 * is the process ID of the other process that is a client of this 2341 * process. This will be 0 if no other process is using this one. 2342 */ 2343 public int importanceReasonPid; 2344 2345 /** 2346 * For the specified values of {@link #importanceReasonCode}, this 2347 * is the name of the component that is being used in this process. 2348 */ 2349 public ComponentName importanceReasonComponent; 2350 2351 /** 2352 * When {@link #importanceReasonPid} is non-0, this is the importance 2353 * of the other pid. @hide 2354 */ 2355 public int importanceReasonImportance; 2356 2357 /** 2358 * Current process state, as per PROCESS_STATE_* constants. 2359 * @hide 2360 */ 2361 public int processState; 2362 2363 public RunningAppProcessInfo() { 2364 importance = IMPORTANCE_FOREGROUND; 2365 importanceReasonCode = REASON_UNKNOWN; 2366 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2367 } 2368 2369 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2370 processName = pProcessName; 2371 pid = pPid; 2372 pkgList = pArr; 2373 } 2374 2375 public int describeContents() { 2376 return 0; 2377 } 2378 2379 public void writeToParcel(Parcel dest, int flags) { 2380 dest.writeString(processName); 2381 dest.writeInt(pid); 2382 dest.writeInt(uid); 2383 dest.writeStringArray(pkgList); 2384 dest.writeInt(this.flags); 2385 dest.writeInt(lastTrimLevel); 2386 dest.writeInt(importance); 2387 dest.writeInt(lru); 2388 dest.writeInt(importanceReasonCode); 2389 dest.writeInt(importanceReasonPid); 2390 ComponentName.writeToParcel(importanceReasonComponent, dest); 2391 dest.writeInt(importanceReasonImportance); 2392 dest.writeInt(processState); 2393 } 2394 2395 public void readFromParcel(Parcel source) { 2396 processName = source.readString(); 2397 pid = source.readInt(); 2398 uid = source.readInt(); 2399 pkgList = source.readStringArray(); 2400 flags = source.readInt(); 2401 lastTrimLevel = source.readInt(); 2402 importance = source.readInt(); 2403 lru = source.readInt(); 2404 importanceReasonCode = source.readInt(); 2405 importanceReasonPid = source.readInt(); 2406 importanceReasonComponent = ComponentName.readFromParcel(source); 2407 importanceReasonImportance = source.readInt(); 2408 processState = source.readInt(); 2409 } 2410 2411 public static final Creator<RunningAppProcessInfo> CREATOR = 2412 new Creator<RunningAppProcessInfo>() { 2413 public RunningAppProcessInfo createFromParcel(Parcel source) { 2414 return new RunningAppProcessInfo(source); 2415 } 2416 public RunningAppProcessInfo[] newArray(int size) { 2417 return new RunningAppProcessInfo[size]; 2418 } 2419 }; 2420 2421 private RunningAppProcessInfo(Parcel source) { 2422 readFromParcel(source); 2423 } 2424 } 2425 2426 /** 2427 * Returns a list of application processes installed on external media 2428 * that are running on the device. 2429 * 2430 * <p><b>Note: this method is only intended for debugging or building 2431 * a user-facing process management UI.</b></p> 2432 * 2433 * @return Returns a list of ApplicationInfo records, or null if none 2434 * This list ordering is not specified. 2435 * @hide 2436 */ 2437 public List<ApplicationInfo> getRunningExternalApplications() { 2438 try { 2439 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2440 } catch (RemoteException e) { 2441 return null; 2442 } 2443 } 2444 2445 /** 2446 * Sets the memory trim mode for a process and schedules a memory trim operation. 2447 * 2448 * <p><b>Note: this method is only intended for testing framework.</b></p> 2449 * 2450 * @return Returns true if successful. 2451 * @hide 2452 */ 2453 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2454 try { 2455 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2456 level); 2457 } catch (RemoteException e) { 2458 return false; 2459 } 2460 } 2461 2462 /** 2463 * Returns a list of application processes that are running on the device. 2464 * 2465 * <p><b>Note: this method is only intended for debugging or building 2466 * a user-facing process management UI.</b></p> 2467 * 2468 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2469 * running processes (it will not return an empty list). This list ordering is not 2470 * specified. 2471 */ 2472 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2473 try { 2474 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2475 } catch (RemoteException e) { 2476 return null; 2477 } 2478 } 2479 2480 /** 2481 * Return the importance of a given package name, based on the processes that are 2482 * currently running. The return value is one of the importance constants defined 2483 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2484 * processes that this package has code running inside of. If there are no processes 2485 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2486 * @hide 2487 */ 2488 @SystemApi 2489 public int getPackageImportance(String packageName) { 2490 try { 2491 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2492 mContext.getOpPackageName()); 2493 return RunningAppProcessInfo.procStateToImportance(procState); 2494 } catch (RemoteException e) { 2495 return RunningAppProcessInfo.IMPORTANCE_GONE; 2496 } 2497 } 2498 2499 /** 2500 * Return global memory state information for the calling process. This 2501 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2502 * only fields that will be filled in are 2503 * {@link RunningAppProcessInfo#pid}, 2504 * {@link RunningAppProcessInfo#uid}, 2505 * {@link RunningAppProcessInfo#lastTrimLevel}, 2506 * {@link RunningAppProcessInfo#importance}, 2507 * {@link RunningAppProcessInfo#lru}, and 2508 * {@link RunningAppProcessInfo#importanceReasonCode}. 2509 */ 2510 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2511 try { 2512 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2513 } catch (RemoteException e) { 2514 } 2515 } 2516 2517 /** 2518 * Return information about the memory usage of one or more processes. 2519 * 2520 * <p><b>Note: this method is only intended for debugging or building 2521 * a user-facing process management UI.</b></p> 2522 * 2523 * @param pids The pids of the processes whose memory usage is to be 2524 * retrieved. 2525 * @return Returns an array of memory information, one for each 2526 * requested pid. 2527 */ 2528 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2529 try { 2530 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2531 } catch (RemoteException e) { 2532 return null; 2533 } 2534 } 2535 2536 /** 2537 * @deprecated This is now just a wrapper for 2538 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2539 * is no longer available to applications because it allows them to 2540 * break other applications by removing their alarms, stopping their 2541 * services, etc. 2542 */ 2543 @Deprecated 2544 public void restartPackage(String packageName) { 2545 killBackgroundProcesses(packageName); 2546 } 2547 2548 /** 2549 * Have the system immediately kill all background processes associated 2550 * with the given package. This is the same as the kernel killing those 2551 * processes to reclaim memory; the system will take care of restarting 2552 * these processes in the future as needed. 2553 * 2554 * <p>You must hold the permission 2555 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2556 * call this method. 2557 * 2558 * @param packageName The name of the package whose processes are to 2559 * be killed. 2560 */ 2561 public void killBackgroundProcesses(String packageName) { 2562 try { 2563 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2564 UserHandle.myUserId()); 2565 } catch (RemoteException e) { 2566 } 2567 } 2568 2569 /** 2570 * Kills the specified UID. 2571 * @param uid The UID to kill. 2572 * @param reason The reason for the kill. 2573 * 2574 * @hide 2575 */ 2576 @RequiresPermission(Manifest.permission.KILL_UID) 2577 public void killUid(int uid, String reason) { 2578 try { 2579 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2580 UserHandle.getUserId(uid), reason); 2581 } catch (RemoteException e) { 2582 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2583 } 2584 } 2585 2586 /** 2587 * Have the system perform a force stop of everything associated with 2588 * the given application package. All processes that share its uid 2589 * will be killed, all services it has running stopped, all activities 2590 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2591 * broadcast will be sent, so that any of its registered alarms can 2592 * be stopped, notifications removed, etc. 2593 * 2594 * <p>You must hold the permission 2595 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2596 * call this method. 2597 * 2598 * @param packageName The name of the package to be stopped. 2599 * @param userId The user for which the running package is to be stopped. 2600 * 2601 * @hide This is not available to third party applications due to 2602 * it allowing them to break other applications by stopping their 2603 * services, removing their alarms, etc. 2604 */ 2605 public void forceStopPackageAsUser(String packageName, int userId) { 2606 try { 2607 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2608 } catch (RemoteException e) { 2609 } 2610 } 2611 2612 /** 2613 * @see #forceStopPackageAsUser(String, int) 2614 * @hide 2615 */ 2616 public void forceStopPackage(String packageName) { 2617 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2618 } 2619 2620 /** 2621 * Get the device configuration attributes. 2622 */ 2623 public ConfigurationInfo getDeviceConfigurationInfo() { 2624 try { 2625 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2626 } catch (RemoteException e) { 2627 } 2628 return null; 2629 } 2630 2631 /** 2632 * Get the preferred density of icons for the launcher. This is used when 2633 * custom drawables are created (e.g., for shortcuts). 2634 * 2635 * @return density in terms of DPI 2636 */ 2637 public int getLauncherLargeIconDensity() { 2638 final Resources res = mContext.getResources(); 2639 final int density = res.getDisplayMetrics().densityDpi; 2640 final int sw = res.getConfiguration().smallestScreenWidthDp; 2641 2642 if (sw < 600) { 2643 // Smaller than approx 7" tablets, use the regular icon size. 2644 return density; 2645 } 2646 2647 switch (density) { 2648 case DisplayMetrics.DENSITY_LOW: 2649 return DisplayMetrics.DENSITY_MEDIUM; 2650 case DisplayMetrics.DENSITY_MEDIUM: 2651 return DisplayMetrics.DENSITY_HIGH; 2652 case DisplayMetrics.DENSITY_TV: 2653 return DisplayMetrics.DENSITY_XHIGH; 2654 case DisplayMetrics.DENSITY_HIGH: 2655 return DisplayMetrics.DENSITY_XHIGH; 2656 case DisplayMetrics.DENSITY_XHIGH: 2657 return DisplayMetrics.DENSITY_XXHIGH; 2658 case DisplayMetrics.DENSITY_XXHIGH: 2659 return DisplayMetrics.DENSITY_XHIGH * 2; 2660 default: 2661 // The density is some abnormal value. Return some other 2662 // abnormal value that is a reasonable scaling of it. 2663 return (int)((density*1.5f)+.5f); 2664 } 2665 } 2666 2667 /** 2668 * Get the preferred launcher icon size. This is used when custom drawables 2669 * are created (e.g., for shortcuts). 2670 * 2671 * @return dimensions of square icons in terms of pixels 2672 */ 2673 public int getLauncherLargeIconSize() { 2674 return getLauncherLargeIconSizeInner(mContext); 2675 } 2676 2677 static int getLauncherLargeIconSizeInner(Context context) { 2678 final Resources res = context.getResources(); 2679 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2680 final int sw = res.getConfiguration().smallestScreenWidthDp; 2681 2682 if (sw < 600) { 2683 // Smaller than approx 7" tablets, use the regular icon size. 2684 return size; 2685 } 2686 2687 final int density = res.getDisplayMetrics().densityDpi; 2688 2689 switch (density) { 2690 case DisplayMetrics.DENSITY_LOW: 2691 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2692 case DisplayMetrics.DENSITY_MEDIUM: 2693 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2694 case DisplayMetrics.DENSITY_TV: 2695 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2696 case DisplayMetrics.DENSITY_HIGH: 2697 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2698 case DisplayMetrics.DENSITY_XHIGH: 2699 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2700 case DisplayMetrics.DENSITY_XXHIGH: 2701 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2702 default: 2703 // The density is some abnormal value. Return some other 2704 // abnormal value that is a reasonable scaling of it. 2705 return (int)((size*1.5f) + .5f); 2706 } 2707 } 2708 2709 /** 2710 * Returns "true" if the user interface is currently being messed with 2711 * by a monkey. 2712 */ 2713 public static boolean isUserAMonkey() { 2714 try { 2715 return ActivityManagerNative.getDefault().isUserAMonkey(); 2716 } catch (RemoteException e) { 2717 } 2718 return false; 2719 } 2720 2721 /** 2722 * Returns "true" if device is running in a test harness. 2723 */ 2724 public static boolean isRunningInTestHarness() { 2725 return SystemProperties.getBoolean("ro.test_harness", false); 2726 } 2727 2728 /** 2729 * Returns the launch count of each installed package. 2730 * 2731 * @hide 2732 */ 2733 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2734 try { 2735 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2736 ServiceManager.getService("usagestats")); 2737 if (usageStatsService == null) { 2738 return new HashMap<String, Integer>(); 2739 } 2740 2741 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2742 ActivityThread.currentPackageName()); 2743 if (allPkgUsageStats == null) { 2744 return new HashMap<String, Integer>(); 2745 } 2746 2747 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2748 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2749 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2750 } 2751 2752 return launchCounts; 2753 } catch (RemoteException e) { 2754 Log.w(TAG, "Could not query launch counts", e); 2755 return new HashMap<String, Integer>(); 2756 } 2757 }*/ 2758 2759 /** @hide */ 2760 public static int checkComponentPermission(String permission, int uid, 2761 int owningUid, boolean exported) { 2762 // Root, system server get to do everything. 2763 final int appId = UserHandle.getAppId(uid); 2764 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2765 return PackageManager.PERMISSION_GRANTED; 2766 } 2767 // Isolated processes don't get any permissions. 2768 if (UserHandle.isIsolated(uid)) { 2769 return PackageManager.PERMISSION_DENIED; 2770 } 2771 // If there is a uid that owns whatever is being accessed, it has 2772 // blanket access to it regardless of the permissions it requires. 2773 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2774 return PackageManager.PERMISSION_GRANTED; 2775 } 2776 // If the target is not exported, then nobody else can get to it. 2777 if (!exported) { 2778 /* 2779 RuntimeException here = new RuntimeException("here"); 2780 here.fillInStackTrace(); 2781 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2782 here); 2783 */ 2784 return PackageManager.PERMISSION_DENIED; 2785 } 2786 if (permission == null) { 2787 return PackageManager.PERMISSION_GRANTED; 2788 } 2789 try { 2790 return AppGlobals.getPackageManager() 2791 .checkUidPermission(permission, uid); 2792 } catch (RemoteException e) { 2793 // Should never happen, but if it does... deny! 2794 Slog.e(TAG, "PackageManager is dead?!?", e); 2795 } 2796 return PackageManager.PERMISSION_DENIED; 2797 } 2798 2799 /** @hide */ 2800 public static int checkUidPermission(String permission, int uid) { 2801 try { 2802 return AppGlobals.getPackageManager() 2803 .checkUidPermission(permission, uid); 2804 } catch (RemoteException e) { 2805 // Should never happen, but if it does... deny! 2806 Slog.e(TAG, "PackageManager is dead?!?", e); 2807 } 2808 return PackageManager.PERMISSION_DENIED; 2809 } 2810 2811 /** 2812 * @hide 2813 * Helper for dealing with incoming user arguments to system service calls. 2814 * Takes care of checking permissions and converting USER_CURRENT to the 2815 * actual current user. 2816 * 2817 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2818 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2819 * @param userId The user id argument supplied by the caller -- this is the user 2820 * they want to run as. 2821 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2822 * to get a USER_ALL returned and deal with it correctly. If false, 2823 * an exception will be thrown if USER_ALL is supplied. 2824 * @param requireFull If true, the caller must hold 2825 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2826 * different user than their current process; otherwise they must hold 2827 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2828 * @param name Optional textual name of the incoming call; only for generating error messages. 2829 * @param callerPackage Optional package name of caller; only for error messages. 2830 * 2831 * @return Returns the user ID that the call should run as. Will always be a concrete 2832 * user number, unless <var>allowAll</var> is true in which case it could also be 2833 * USER_ALL. 2834 */ 2835 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2836 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2837 if (UserHandle.getUserId(callingUid) == userId) { 2838 return userId; 2839 } 2840 try { 2841 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2842 callingUid, userId, allowAll, requireFull, name, callerPackage); 2843 } catch (RemoteException e) { 2844 throw new SecurityException("Failed calling activity manager", e); 2845 } 2846 } 2847 2848 /** 2849 * Gets the userId of the current foreground user. Requires system permissions. 2850 * @hide 2851 */ 2852 @SystemApi 2853 public static int getCurrentUser() { 2854 UserInfo ui; 2855 try { 2856 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2857 return ui != null ? ui.id : 0; 2858 } catch (RemoteException e) { 2859 return 0; 2860 } 2861 } 2862 2863 /** 2864 * @param userid the user's id. Zero indicates the default user. 2865 * @hide 2866 */ 2867 public boolean switchUser(int userid) { 2868 try { 2869 return ActivityManagerNative.getDefault().switchUser(userid); 2870 } catch (RemoteException e) { 2871 return false; 2872 } 2873 } 2874 2875 /** 2876 * Return whether the given user is actively running. This means that 2877 * the user is in the "started" state, not "stopped" -- it is currently 2878 * allowed to run code through scheduled alarms, receiving broadcasts, 2879 * etc. A started user may be either the current foreground user or a 2880 * background user; the result here does not distinguish between the two. 2881 * @param userid the user's id. Zero indicates the default user. 2882 * @hide 2883 */ 2884 public boolean isUserRunning(int userid) { 2885 try { 2886 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2887 } catch (RemoteException e) { 2888 return false; 2889 } 2890 } 2891 2892 /** 2893 * Perform a system dump of various state associated with the given application 2894 * package name. This call blocks while the dump is being performed, so should 2895 * not be done on a UI thread. The data will be written to the given file 2896 * descriptor as text. An application must hold the 2897 * {@link android.Manifest.permission#DUMP} permission to make this call. 2898 * @param fd The file descriptor that the dump should be written to. The file 2899 * descriptor is <em>not</em> closed by this function; the caller continues to 2900 * own it. 2901 * @param packageName The name of the package that is to be dumped. 2902 */ 2903 public void dumpPackageState(FileDescriptor fd, String packageName) { 2904 dumpPackageStateStatic(fd, packageName); 2905 } 2906 2907 /** 2908 * @hide 2909 */ 2910 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2911 FileOutputStream fout = new FileOutputStream(fd); 2912 PrintWriter pw = new FastPrintWriter(fout); 2913 dumpService(pw, fd, "package", new String[] { packageName }); 2914 pw.println(); 2915 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2916 "-a", "package", packageName }); 2917 pw.println(); 2918 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2919 pw.println(); 2920 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2921 pw.println(); 2922 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2923 pw.println(); 2924 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2925 pw.flush(); 2926 } 2927 2928 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2929 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2930 IBinder service = ServiceManager.checkService(name); 2931 if (service == null) { 2932 pw.println(" (Service not found)"); 2933 return; 2934 } 2935 TransferPipe tp = null; 2936 try { 2937 pw.flush(); 2938 tp = new TransferPipe(); 2939 tp.setBufferPrefix(" "); 2940 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2941 tp.go(fd, 10000); 2942 } catch (Throwable e) { 2943 if (tp != null) { 2944 tp.kill(); 2945 } 2946 pw.println("Failure dumping service:"); 2947 e.printStackTrace(pw); 2948 } 2949 } 2950 2951 /** 2952 * Request that the system start watching for the calling process to exceed a pss 2953 * size as given here. Once called, the system will look for any occasions where it 2954 * sees the associated process with a larger pss size and, when this happens, automatically 2955 * pull a heap dump from it and allow the user to share the data. Note that this request 2956 * continues running even if the process is killed and restarted. To remove the watch, 2957 * use {@link #clearWatchHeapLimit()}. 2958 * 2959 * <p>This API only work if the calling process has been marked as 2960 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 2961 * (userdebug or eng) build.</p> 2962 * 2963 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 2964 * handle heap limit reports themselves.</p> 2965 * 2966 * @param pssSize The size in bytes to set the limit at. 2967 */ 2968 public void setWatchHeapLimit(long pssSize) { 2969 try { 2970 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 2971 mContext.getPackageName()); 2972 } catch (RemoteException e) { 2973 } 2974 } 2975 2976 /** 2977 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 2978 * If your package has an activity handling this action, it will be launched with the 2979 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 2980 * match the activty must support this action and a MIME type of "*/*". 2981 */ 2982 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 2983 2984 /** 2985 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 2986 */ 2987 public void clearWatchHeapLimit() { 2988 try { 2989 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 2990 } catch (RemoteException e) { 2991 } 2992 } 2993 2994 /** 2995 * @hide 2996 */ 2997 public void startLockTaskMode(int taskId) { 2998 try { 2999 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3000 } catch (RemoteException e) { 3001 } 3002 } 3003 3004 /** 3005 * @hide 3006 */ 3007 public void stopLockTaskMode() { 3008 try { 3009 ActivityManagerNative.getDefault().stopLockTaskMode(); 3010 } catch (RemoteException e) { 3011 } 3012 } 3013 3014 /** 3015 * Return whether currently in lock task mode. When in this mode 3016 * no new tasks can be created or switched to. 3017 * 3018 * @see Activity#startLockTask() 3019 * 3020 * @deprecated Use {@link #getLockTaskModeState} instead. 3021 */ 3022 public boolean isInLockTaskMode() { 3023 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3024 } 3025 3026 /** 3027 * Return the current state of task locking. The three possible outcomes 3028 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3029 * and {@link #LOCK_TASK_MODE_PINNED}. 3030 * 3031 * @see Activity#startLockTask() 3032 */ 3033 public int getLockTaskModeState() { 3034 try { 3035 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3036 } catch (RemoteException e) { 3037 return ActivityManager.LOCK_TASK_MODE_NONE; 3038 } 3039 } 3040 3041 /** 3042 * The AppTask allows you to manage your own application's tasks. 3043 * See {@link android.app.ActivityManager#getAppTasks()} 3044 */ 3045 public static class AppTask { 3046 private IAppTask mAppTaskImpl; 3047 3048 /** @hide */ 3049 public AppTask(IAppTask task) { 3050 mAppTaskImpl = task; 3051 } 3052 3053 /** 3054 * Finishes all activities in this task and removes it from the recent tasks list. 3055 */ 3056 public void finishAndRemoveTask() { 3057 try { 3058 mAppTaskImpl.finishAndRemoveTask(); 3059 } catch (RemoteException e) { 3060 Slog.e(TAG, "Invalid AppTask", e); 3061 } 3062 } 3063 3064 /** 3065 * Get the RecentTaskInfo associated with this task. 3066 * 3067 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3068 */ 3069 public RecentTaskInfo getTaskInfo() { 3070 try { 3071 return mAppTaskImpl.getTaskInfo(); 3072 } catch (RemoteException e) { 3073 Slog.e(TAG, "Invalid AppTask", e); 3074 return null; 3075 } 3076 } 3077 3078 /** 3079 * Bring this task to the foreground. If it contains activities, they will be 3080 * brought to the foreground with it and their instances re-created if needed. 3081 * If it doesn't contain activities, the root activity of the task will be 3082 * re-launched. 3083 */ 3084 public void moveToFront() { 3085 try { 3086 mAppTaskImpl.moveToFront(); 3087 } catch (RemoteException e) { 3088 Slog.e(TAG, "Invalid AppTask", e); 3089 } 3090 } 3091 3092 /** 3093 * Start an activity in this task. Brings the task to the foreground. If this task 3094 * is not currently active (that is, its id < 0), then a new activity for the given 3095 * Intent will be launched as the root of the task and the task brought to the 3096 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3097 * an activity to launch in a new task, then a new activity for the given Intent will 3098 * be launched on top of the task and the task brought to the foreground. If this 3099 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3100 * or would otherwise be launched in to a new task, then the activity not launched but 3101 * this task be brought to the foreground and a new intent delivered to the top 3102 * activity if appropriate. 3103 * 3104 * <p>In other words, you generally want to use an Intent here that does not specify 3105 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3106 * and let the system do the right thing.</p> 3107 * 3108 * @param intent The Intent describing the new activity to be launched on the task. 3109 * @param options Optional launch options. 3110 * 3111 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3112 */ 3113 public void startActivity(Context context, Intent intent, Bundle options) { 3114 ActivityThread thread = ActivityThread.currentActivityThread(); 3115 thread.getInstrumentation().execStartActivityFromAppTask(context, 3116 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3117 } 3118 3119 /** 3120 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3121 * Intent of this AppTask. 3122 * 3123 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3124 * be set; otherwise, it will be cleared. 3125 */ 3126 public void setExcludeFromRecents(boolean exclude) { 3127 try { 3128 mAppTaskImpl.setExcludeFromRecents(exclude); 3129 } catch (RemoteException e) { 3130 Slog.e(TAG, "Invalid AppTask", e); 3131 } 3132 } 3133 } 3134} 3135