ActivityManager.java revision 2dd7694681b7256e136d7f4d060be2858c48e835
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 * ID of stack that always on top (always visible) when it exist. 438 * Mainly used for this in Picture-in-Picture mode. 439 * @hide 440 */ 441 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 442 443 /** 444 * Last static stack stack ID. 445 * @hide 446 */ 447 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 448 449 /** 450 * Start of ID range used by stacks that are created dynamically. 451 * @hide 452 */ 453 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 454 455 /** 456 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 457 * specifies the position of the created docked stack at the top half of the screen if 458 * in portrait mode or at the left half of the screen if in landscape mode. 459 * @hide 460 */ 461 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 462 463 /** 464 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 465 * specifies the position of the created docked stack at the bottom half of the screen if 466 * in portrait mode or at the right half of the screen if in landscape mode. 467 * @hide 468 */ 469 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 470 471 /** 472 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 473 * that the resize doesn't need to preserve the window, and can be skipped if bounds 474 * is unchanged. This mode is used by window manager in most cases. 475 * @hide 476 */ 477 public static final int RESIZE_MODE_SYSTEM = 0; 478 479 /** 480 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 481 * that the resize should preserve the window if possible. 482 * @hide 483 */ 484 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 485 486 /** 487 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 488 * that the resize should be performed even if the bounds appears unchanged. 489 * @hide 490 */ 491 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 492 493 /** 494 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 495 * manager during a screen rotation. 496 * @hide 497 */ 498 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 499 500 /** 501 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 502 * resize is due to a drag action. 503 * @hide 504 */ 505 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 506 507 /** 508 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 509 * that the resize should preserve the window if possible, and should not be skipped 510 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 511 * is ending. 512 * @hide 513 */ 514 public static final int RESIZE_MODE_USER_FORCED = 515 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 516 517 /** @hide */ 518 public int getFrontActivityScreenCompatMode() { 519 try { 520 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 521 } catch (RemoteException e) { 522 // System dead, we will be dead too soon! 523 return 0; 524 } 525 } 526 527 /** @hide */ 528 public void setFrontActivityScreenCompatMode(int mode) { 529 try { 530 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 531 } catch (RemoteException e) { 532 // System dead, we will be dead too soon! 533 } 534 } 535 536 /** @hide */ 537 public int getPackageScreenCompatMode(String packageName) { 538 try { 539 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 540 } catch (RemoteException e) { 541 // System dead, we will be dead too soon! 542 return 0; 543 } 544 } 545 546 /** @hide */ 547 public void setPackageScreenCompatMode(String packageName, int mode) { 548 try { 549 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 550 } catch (RemoteException e) { 551 // System dead, we will be dead too soon! 552 } 553 } 554 555 /** @hide */ 556 public boolean getPackageAskScreenCompat(String packageName) { 557 try { 558 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 559 } catch (RemoteException e) { 560 // System dead, we will be dead too soon! 561 return false; 562 } 563 } 564 565 /** @hide */ 566 public void setPackageAskScreenCompat(String packageName, boolean ask) { 567 try { 568 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 569 } catch (RemoteException e) { 570 // System dead, we will be dead too soon! 571 } 572 } 573 574 /** 575 * Return the approximate per-application memory class of the current 576 * device. This gives you an idea of how hard a memory limit you should 577 * impose on your application to let the overall system work best. The 578 * returned value is in megabytes; the baseline Android memory class is 579 * 16 (which happens to be the Java heap limit of those devices); some 580 * device with more memory may return 24 or even higher numbers. 581 */ 582 public int getMemoryClass() { 583 return staticGetMemoryClass(); 584 } 585 586 /** @hide */ 587 static public int staticGetMemoryClass() { 588 // Really brain dead right now -- just take this from the configured 589 // vm heap size, and assume it is in megabytes and thus ends with "m". 590 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 591 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 592 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 593 } 594 return staticGetLargeMemoryClass(); 595 } 596 597 /** 598 * Return the approximate per-application memory class of the current 599 * device when an application is running with a large heap. This is the 600 * space available for memory-intensive applications; most applications 601 * should not need this amount of memory, and should instead stay with the 602 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 603 * This may be the same size as {@link #getMemoryClass()} on memory 604 * constrained devices, or it may be significantly larger on devices with 605 * a large amount of available RAM. 606 * 607 * <p>The is the size of the application's Dalvik heap if it has 608 * specified <code>android:largeHeap="true"</code> in its manifest. 609 */ 610 public int getLargeMemoryClass() { 611 return staticGetLargeMemoryClass(); 612 } 613 614 /** @hide */ 615 static public int staticGetLargeMemoryClass() { 616 // Really brain dead right now -- just take this from the configured 617 // vm heap size, and assume it is in megabytes and thus ends with "m". 618 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 619 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 620 } 621 622 /** 623 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 624 * is ultimately up to the device configuration, but currently it generally means 625 * something in the class of a 512MB device with about a 800x480 or less screen. 626 * This is mostly intended to be used by apps to determine whether they should turn 627 * off certain features that require more RAM. 628 */ 629 public boolean isLowRamDevice() { 630 return isLowRamDeviceStatic(); 631 } 632 633 /** @hide */ 634 public static boolean isLowRamDeviceStatic() { 635 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 636 } 637 638 /** 639 * Used by persistent processes to determine if they are running on a 640 * higher-end device so should be okay using hardware drawing acceleration 641 * (which tends to consume a lot more RAM). 642 * @hide 643 */ 644 static public boolean isHighEndGfx() { 645 return !isLowRamDeviceStatic() && 646 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 647 } 648 649 /** 650 * Return the maximum number of recents entries that we will maintain and show. 651 * @hide 652 */ 653 static public int getMaxRecentTasksStatic() { 654 if (gMaxRecentTasks < 0) { 655 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 656 } 657 return gMaxRecentTasks; 658 } 659 660 /** 661 * Return the default limit on the number of recents that an app can make. 662 * @hide 663 */ 664 static public int getDefaultAppRecentsLimitStatic() { 665 return getMaxRecentTasksStatic() / 6; 666 } 667 668 /** 669 * Return the maximum limit on the number of recents that an app can make. 670 * @hide 671 */ 672 static public int getMaxAppRecentsLimitStatic() { 673 return getMaxRecentTasksStatic() / 2; 674 } 675 676 /** 677 * Information you can set and retrieve about the current activity within the recent task list. 678 */ 679 public static class TaskDescription implements Parcelable { 680 /** @hide */ 681 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 682 private static final String ATTR_TASKDESCRIPTIONLABEL = 683 ATTR_TASKDESCRIPTION_PREFIX + "label"; 684 private static final String ATTR_TASKDESCRIPTIONCOLOR = 685 ATTR_TASKDESCRIPTION_PREFIX + "color"; 686 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 687 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 688 689 private String mLabel; 690 private Bitmap mIcon; 691 private String mIconFilename; 692 private int mColorPrimary; 693 694 /** 695 * Creates the TaskDescription to the specified values. 696 * 697 * @param label A label and description of the current state of this task. 698 * @param icon An icon that represents the current state of this task. 699 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 700 */ 701 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 702 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 703 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 704 } 705 706 mLabel = label; 707 mIcon = icon; 708 mColorPrimary = colorPrimary; 709 } 710 711 /** @hide */ 712 public TaskDescription(String label, int colorPrimary, String iconFilename) { 713 this(label, null, colorPrimary); 714 mIconFilename = iconFilename; 715 } 716 717 /** 718 * Creates the TaskDescription to the specified values. 719 * 720 * @param label A label and description of the current state of this activity. 721 * @param icon An icon that represents the current state of this activity. 722 */ 723 public TaskDescription(String label, Bitmap icon) { 724 this(label, icon, 0); 725 } 726 727 /** 728 * Creates the TaskDescription to the specified values. 729 * 730 * @param label A label and description of the current state of this activity. 731 */ 732 public TaskDescription(String label) { 733 this(label, null, 0); 734 } 735 736 /** 737 * Creates an empty TaskDescription. 738 */ 739 public TaskDescription() { 740 this(null, null, 0); 741 } 742 743 /** 744 * Creates a copy of another TaskDescription. 745 */ 746 public TaskDescription(TaskDescription td) { 747 mLabel = td.mLabel; 748 mIcon = td.mIcon; 749 mColorPrimary = td.mColorPrimary; 750 mIconFilename = td.mIconFilename; 751 } 752 753 private TaskDescription(Parcel source) { 754 readFromParcel(source); 755 } 756 757 /** 758 * Sets the label for this task description. 759 * @hide 760 */ 761 public void setLabel(String label) { 762 mLabel = label; 763 } 764 765 /** 766 * Sets the primary color for this task description. 767 * @hide 768 */ 769 public void setPrimaryColor(int primaryColor) { 770 // Ensure that the given color is valid 771 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 772 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 773 } 774 mColorPrimary = primaryColor; 775 } 776 777 /** 778 * Sets the icon for this task description. 779 * @hide 780 */ 781 public void setIcon(Bitmap icon) { 782 mIcon = icon; 783 } 784 785 /** 786 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 787 * bitmap. 788 * @hide 789 */ 790 public void setIconFilename(String iconFilename) { 791 mIconFilename = iconFilename; 792 mIcon = null; 793 } 794 795 /** 796 * @return The label and description of the current state of this task. 797 */ 798 public String getLabel() { 799 return mLabel; 800 } 801 802 /** 803 * @return The icon that represents the current state of this task. 804 */ 805 public Bitmap getIcon() { 806 if (mIcon != null) { 807 return mIcon; 808 } 809 return loadTaskDescriptionIcon(mIconFilename); 810 } 811 812 /** @hide */ 813 public String getIconFilename() { 814 return mIconFilename; 815 } 816 817 /** @hide */ 818 public Bitmap getInMemoryIcon() { 819 return mIcon; 820 } 821 822 /** @hide */ 823 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 824 if (iconFilename != null) { 825 try { 826 return ActivityManagerNative.getDefault(). 827 getTaskDescriptionIcon(iconFilename); 828 } catch (RemoteException e) { 829 } 830 } 831 return null; 832 } 833 834 /** 835 * @return The color override on the theme's primary color. 836 */ 837 public int getPrimaryColor() { 838 return mColorPrimary; 839 } 840 841 /** @hide */ 842 public void saveToXml(XmlSerializer out) throws IOException { 843 if (mLabel != null) { 844 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 845 } 846 if (mColorPrimary != 0) { 847 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 848 } 849 if (mIconFilename != null) { 850 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 851 } 852 } 853 854 /** @hide */ 855 public void restoreFromXml(String attrName, String attrValue) { 856 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 857 setLabel(attrValue); 858 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 859 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 860 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 861 setIconFilename(attrValue); 862 } 863 } 864 865 @Override 866 public int describeContents() { 867 return 0; 868 } 869 870 @Override 871 public void writeToParcel(Parcel dest, int flags) { 872 if (mLabel == null) { 873 dest.writeInt(0); 874 } else { 875 dest.writeInt(1); 876 dest.writeString(mLabel); 877 } 878 if (mIcon == null) { 879 dest.writeInt(0); 880 } else { 881 dest.writeInt(1); 882 mIcon.writeToParcel(dest, 0); 883 } 884 dest.writeInt(mColorPrimary); 885 if (mIconFilename == null) { 886 dest.writeInt(0); 887 } else { 888 dest.writeInt(1); 889 dest.writeString(mIconFilename); 890 } 891 } 892 893 public void readFromParcel(Parcel source) { 894 mLabel = source.readInt() > 0 ? source.readString() : null; 895 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 896 mColorPrimary = source.readInt(); 897 mIconFilename = source.readInt() > 0 ? source.readString() : null; 898 } 899 900 public static final Creator<TaskDescription> CREATOR 901 = new Creator<TaskDescription>() { 902 public TaskDescription createFromParcel(Parcel source) { 903 return new TaskDescription(source); 904 } 905 public TaskDescription[] newArray(int size) { 906 return new TaskDescription[size]; 907 } 908 }; 909 910 @Override 911 public String toString() { 912 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 913 " colorPrimary: " + mColorPrimary; 914 } 915 } 916 917 /** 918 * Information you can retrieve about tasks that the user has most recently 919 * started or visited. 920 */ 921 public static class RecentTaskInfo implements Parcelable { 922 /** 923 * If this task is currently running, this is the identifier for it. 924 * If it is not running, this will be -1. 925 */ 926 public int id; 927 928 /** 929 * The true identifier of this task, valid even if it is not running. 930 */ 931 public int persistentId; 932 933 /** 934 * The original Intent used to launch the task. You can use this 935 * Intent to re-launch the task (if it is no longer running) or bring 936 * the current task to the front. 937 */ 938 public Intent baseIntent; 939 940 /** 941 * If this task was started from an alias, this is the actual 942 * activity component that was initially started; the component of 943 * the baseIntent in this case is the name of the actual activity 944 * implementation that the alias referred to. Otherwise, this is null. 945 */ 946 public ComponentName origActivity; 947 948 /** 949 * The actual activity component that started the task. 950 * @hide 951 */ 952 @Nullable 953 public ComponentName realActivity; 954 955 /** 956 * Description of the task's last state. 957 */ 958 public CharSequence description; 959 960 /** 961 * The id of the ActivityStack this Task was on most recently. 962 * @hide 963 */ 964 public int stackId; 965 966 /** 967 * The id of the user the task was running as. 968 * @hide 969 */ 970 public int userId; 971 972 /** 973 * The first time this task was active. 974 * @hide 975 */ 976 public long firstActiveTime; 977 978 /** 979 * The last time this task was active. 980 * @hide 981 */ 982 public long lastActiveTime; 983 984 /** 985 * The recent activity values for the highest activity in the stack to have set the values. 986 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 987 */ 988 public TaskDescription taskDescription; 989 990 /** 991 * Task affiliation for grouping with other tasks. 992 */ 993 public int affiliatedTaskId; 994 995 /** 996 * Task affiliation color of the source task with the affiliated task id. 997 * 998 * @hide 999 */ 1000 public int affiliatedTaskColor; 1001 1002 /** 1003 * The component launched as the first activity in the task. 1004 * This can be considered the "application" of this task. 1005 */ 1006 public ComponentName baseActivity; 1007 1008 /** 1009 * The activity component at the top of the history stack of the task. 1010 * This is what the user is currently doing. 1011 */ 1012 public ComponentName topActivity; 1013 1014 /** 1015 * Number of activities in this task. 1016 */ 1017 public int numActivities; 1018 1019 /** 1020 * The bounds of the task. 1021 * @hide 1022 */ 1023 public Rect bounds; 1024 1025 public RecentTaskInfo() { 1026 } 1027 1028 @Override 1029 public int describeContents() { 1030 return 0; 1031 } 1032 1033 @Override 1034 public void writeToParcel(Parcel dest, int flags) { 1035 dest.writeInt(id); 1036 dest.writeInt(persistentId); 1037 if (baseIntent != null) { 1038 dest.writeInt(1); 1039 baseIntent.writeToParcel(dest, 0); 1040 } else { 1041 dest.writeInt(0); 1042 } 1043 ComponentName.writeToParcel(origActivity, dest); 1044 ComponentName.writeToParcel(realActivity, dest); 1045 TextUtils.writeToParcel(description, dest, 1046 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1047 if (taskDescription != null) { 1048 dest.writeInt(1); 1049 taskDescription.writeToParcel(dest, 0); 1050 } else { 1051 dest.writeInt(0); 1052 } 1053 dest.writeInt(stackId); 1054 dest.writeInt(userId); 1055 dest.writeLong(firstActiveTime); 1056 dest.writeLong(lastActiveTime); 1057 dest.writeInt(affiliatedTaskId); 1058 dest.writeInt(affiliatedTaskColor); 1059 ComponentName.writeToParcel(baseActivity, dest); 1060 ComponentName.writeToParcel(topActivity, dest); 1061 dest.writeInt(numActivities); 1062 if (bounds != null) { 1063 dest.writeInt(1); 1064 bounds.writeToParcel(dest, 0); 1065 } else { 1066 dest.writeInt(0); 1067 } 1068 } 1069 1070 public void readFromParcel(Parcel source) { 1071 id = source.readInt(); 1072 persistentId = source.readInt(); 1073 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1074 origActivity = ComponentName.readFromParcel(source); 1075 realActivity = ComponentName.readFromParcel(source); 1076 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1077 taskDescription = source.readInt() > 0 ? 1078 TaskDescription.CREATOR.createFromParcel(source) : null; 1079 stackId = source.readInt(); 1080 userId = source.readInt(); 1081 firstActiveTime = source.readLong(); 1082 lastActiveTime = source.readLong(); 1083 affiliatedTaskId = source.readInt(); 1084 affiliatedTaskColor = source.readInt(); 1085 baseActivity = ComponentName.readFromParcel(source); 1086 topActivity = ComponentName.readFromParcel(source); 1087 numActivities = source.readInt(); 1088 bounds = source.readInt() > 0 ? 1089 Rect.CREATOR.createFromParcel(source) : null; 1090 } 1091 1092 public static final Creator<RecentTaskInfo> CREATOR 1093 = new Creator<RecentTaskInfo>() { 1094 public RecentTaskInfo createFromParcel(Parcel source) { 1095 return new RecentTaskInfo(source); 1096 } 1097 public RecentTaskInfo[] newArray(int size) { 1098 return new RecentTaskInfo[size]; 1099 } 1100 }; 1101 1102 private RecentTaskInfo(Parcel source) { 1103 readFromParcel(source); 1104 } 1105 } 1106 1107 /** 1108 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1109 * that have set their 1110 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1111 */ 1112 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1113 1114 /** 1115 * Provides a list that does not contain any 1116 * recent tasks that currently are not available to the user. 1117 */ 1118 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1119 1120 /** 1121 * Provides a list that contains recent tasks for all 1122 * profiles of a user. 1123 * @hide 1124 */ 1125 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1126 1127 /** 1128 * Ignores all tasks that are on the home stack. 1129 * @hide 1130 */ 1131 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1132 1133 /** 1134 * <p></p>Return a list of the tasks that the user has recently launched, with 1135 * the most recent being first and older ones after in order. 1136 * 1137 * <p><b>Note: this method is only intended for debugging and presenting 1138 * task management user interfaces</b>. This should never be used for 1139 * core logic in an application, such as deciding between different 1140 * behaviors based on the information found here. Such uses are 1141 * <em>not</em> supported, and will likely break in the future. For 1142 * example, if multiple applications can be actively running at the 1143 * same time, assumptions made about the meaning of the data here for 1144 * purposes of control flow will be incorrect.</p> 1145 * 1146 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1147 * no longer available to third party applications: the introduction of 1148 * document-centric recents means 1149 * it can leak personal information to the caller. For backwards compatibility, 1150 * it will still return a small subset of its data: at least the caller's 1151 * own tasks (though see {@link #getAppTasks()} for the correct supported 1152 * way to retrieve that information), and possibly some other tasks 1153 * such as home that are known to not be sensitive. 1154 * 1155 * @param maxNum The maximum number of entries to return in the list. The 1156 * actual number returned may be smaller, depending on how many tasks the 1157 * user has started and the maximum number the system can remember. 1158 * @param flags Information about what to return. May be any combination 1159 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1160 * 1161 * @return Returns a list of RecentTaskInfo records describing each of 1162 * the recent tasks. 1163 */ 1164 @Deprecated 1165 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1166 throws SecurityException { 1167 try { 1168 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1169 flags, UserHandle.myUserId()); 1170 } catch (RemoteException e) { 1171 // System dead, we will be dead too soon! 1172 return null; 1173 } 1174 } 1175 1176 /** 1177 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1178 * specific user. It requires holding 1179 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1180 * @param maxNum The maximum number of entries to return in the list. The 1181 * actual number returned may be smaller, depending on how many tasks the 1182 * user has started and the maximum number the system can remember. 1183 * @param flags Information about what to return. May be any combination 1184 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1185 * 1186 * @return Returns a list of RecentTaskInfo records describing each of 1187 * the recent tasks. Most recently activated tasks go first. 1188 * 1189 * @hide 1190 */ 1191 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1192 throws SecurityException { 1193 try { 1194 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1195 flags, userId); 1196 } catch (RemoteException e) { 1197 // System dead, we will be dead too soon! 1198 return null; 1199 } 1200 } 1201 1202 /** 1203 * Information you can retrieve about a particular task that is currently 1204 * "running" in the system. Note that a running task does not mean the 1205 * given task actually has a process it is actively running in; it simply 1206 * means that the user has gone to it and never closed it, but currently 1207 * the system may have killed its process and is only holding on to its 1208 * last state in order to restart it when the user returns. 1209 */ 1210 public static class RunningTaskInfo implements Parcelable { 1211 /** 1212 * A unique identifier for this task. 1213 */ 1214 public int id; 1215 1216 /** 1217 * The stack that currently contains this task. 1218 * @hide 1219 */ 1220 public int stackId; 1221 1222 /** 1223 * The component launched as the first activity in the task. This can 1224 * be considered the "application" of this task. 1225 */ 1226 public ComponentName baseActivity; 1227 1228 /** 1229 * The activity component at the top of the history stack of the task. 1230 * This is what the user is currently doing. 1231 */ 1232 public ComponentName topActivity; 1233 1234 /** 1235 * Thumbnail representation of the task's current state. Currently 1236 * always null. 1237 */ 1238 public Bitmap thumbnail; 1239 1240 /** 1241 * Description of the task's current state. 1242 */ 1243 public CharSequence description; 1244 1245 /** 1246 * Number of activities in this task. 1247 */ 1248 public int numActivities; 1249 1250 /** 1251 * Number of activities that are currently running (not stopped 1252 * and persisted) in this task. 1253 */ 1254 public int numRunning; 1255 1256 /** 1257 * Last time task was run. For sorting. 1258 * @hide 1259 */ 1260 public long lastActiveTime; 1261 1262 public RunningTaskInfo() { 1263 } 1264 1265 public int describeContents() { 1266 return 0; 1267 } 1268 1269 public void writeToParcel(Parcel dest, int flags) { 1270 dest.writeInt(id); 1271 dest.writeInt(stackId); 1272 ComponentName.writeToParcel(baseActivity, dest); 1273 ComponentName.writeToParcel(topActivity, dest); 1274 if (thumbnail != null) { 1275 dest.writeInt(1); 1276 thumbnail.writeToParcel(dest, 0); 1277 } else { 1278 dest.writeInt(0); 1279 } 1280 TextUtils.writeToParcel(description, dest, 1281 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1282 dest.writeInt(numActivities); 1283 dest.writeInt(numRunning); 1284 } 1285 1286 public void readFromParcel(Parcel source) { 1287 id = source.readInt(); 1288 stackId = source.readInt(); 1289 baseActivity = ComponentName.readFromParcel(source); 1290 topActivity = ComponentName.readFromParcel(source); 1291 if (source.readInt() != 0) { 1292 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1293 } else { 1294 thumbnail = null; 1295 } 1296 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1297 numActivities = source.readInt(); 1298 numRunning = source.readInt(); 1299 } 1300 1301 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1302 public RunningTaskInfo createFromParcel(Parcel source) { 1303 return new RunningTaskInfo(source); 1304 } 1305 public RunningTaskInfo[] newArray(int size) { 1306 return new RunningTaskInfo[size]; 1307 } 1308 }; 1309 1310 private RunningTaskInfo(Parcel source) { 1311 readFromParcel(source); 1312 } 1313 } 1314 1315 /** 1316 * Get the list of tasks associated with the calling application. 1317 * 1318 * @return The list of tasks associated with the application making this call. 1319 * @throws SecurityException 1320 */ 1321 public List<ActivityManager.AppTask> getAppTasks() { 1322 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1323 List<IAppTask> appTasks; 1324 try { 1325 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1326 } catch (RemoteException e) { 1327 // System dead, we will be dead too soon! 1328 return null; 1329 } 1330 int numAppTasks = appTasks.size(); 1331 for (int i = 0; i < numAppTasks; i++) { 1332 tasks.add(new AppTask(appTasks.get(i))); 1333 } 1334 return tasks; 1335 } 1336 1337 /** 1338 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1339 * with {@link #addAppTask}. 1340 */ 1341 public Size getAppTaskThumbnailSize() { 1342 synchronized (this) { 1343 ensureAppTaskThumbnailSizeLocked(); 1344 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1345 } 1346 } 1347 1348 private void ensureAppTaskThumbnailSizeLocked() { 1349 if (mAppTaskThumbnailSize == null) { 1350 try { 1351 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1352 } catch (RemoteException e) { 1353 throw new IllegalStateException("System dead?", e); 1354 } 1355 } 1356 } 1357 1358 /** 1359 * Add a new {@link AppTask} for the calling application. This will create a new 1360 * recents entry that is added to the <b>end</b> of all existing recents. 1361 * 1362 * @param activity The activity that is adding the entry. This is used to help determine 1363 * the context that the new recents entry will be in. 1364 * @param intent The Intent that describes the recents entry. This is the same Intent that 1365 * you would have used to launch the activity for it. In generally you will want to set 1366 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1367 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1368 * entry will exist without an activity, so it doesn't make sense to not retain it when 1369 * its activity disappears. The given Intent here also must have an explicit ComponentName 1370 * set on it. 1371 * @param description Optional additional description information. 1372 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1373 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1374 * recreated in your process, probably in a way you don't like, before the recents entry 1375 * is added. 1376 * 1377 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1378 * most likely cause of failure is that there is no more room for more tasks for your app. 1379 */ 1380 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1381 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1382 Point size; 1383 synchronized (this) { 1384 ensureAppTaskThumbnailSizeLocked(); 1385 size = mAppTaskThumbnailSize; 1386 } 1387 final int tw = thumbnail.getWidth(); 1388 final int th = thumbnail.getHeight(); 1389 if (tw != size.x || th != size.y) { 1390 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1391 1392 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1393 float scale; 1394 float dx = 0, dy = 0; 1395 if (tw * size.x > size.y * th) { 1396 scale = (float) size.x / (float) th; 1397 dx = (size.y - tw * scale) * 0.5f; 1398 } else { 1399 scale = (float) size.y / (float) tw; 1400 dy = (size.x - th * scale) * 0.5f; 1401 } 1402 Matrix matrix = new Matrix(); 1403 matrix.setScale(scale, scale); 1404 matrix.postTranslate((int) (dx + 0.5f), 0); 1405 1406 Canvas canvas = new Canvas(bm); 1407 canvas.drawBitmap(thumbnail, matrix, null); 1408 canvas.setBitmap(null); 1409 1410 thumbnail = bm; 1411 } 1412 if (description == null) { 1413 description = new TaskDescription(); 1414 } 1415 try { 1416 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1417 intent, description, thumbnail); 1418 } catch (RemoteException e) { 1419 throw new IllegalStateException("System dead?", e); 1420 } 1421 } 1422 1423 /** 1424 * Return a list of the tasks that are currently running, with 1425 * the most recent being first and older ones after in order. Note that 1426 * "running" does not mean any of the task's code is currently loaded or 1427 * activity -- the task may have been frozen by the system, so that it 1428 * can be restarted in its previous state when next brought to the 1429 * foreground. 1430 * 1431 * <p><b>Note: this method is only intended for debugging and presenting 1432 * task management user interfaces</b>. This should never be used for 1433 * core logic in an application, such as deciding between different 1434 * behaviors based on the information found here. Such uses are 1435 * <em>not</em> supported, and will likely break in the future. For 1436 * example, if multiple applications can be actively running at the 1437 * same time, assumptions made about the meaning of the data here for 1438 * purposes of control flow will be incorrect.</p> 1439 * 1440 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1441 * is no longer available to third party 1442 * applications: the introduction of document-centric recents means 1443 * it can leak person information to the caller. For backwards compatibility, 1444 * it will still retu rn a small subset of its data: at least the caller's 1445 * own tasks, and possibly some other tasks 1446 * such as home that are known to not be sensitive. 1447 * 1448 * @param maxNum The maximum number of entries to return in the list. The 1449 * actual number returned may be smaller, depending on how many tasks the 1450 * user has started. 1451 * 1452 * @return Returns a list of RunningTaskInfo records describing each of 1453 * the running tasks. 1454 */ 1455 @Deprecated 1456 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1457 throws SecurityException { 1458 try { 1459 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1460 } catch (RemoteException e) { 1461 // System dead, we will be dead too soon! 1462 return null; 1463 } 1464 } 1465 1466 /** 1467 * Completely remove the given task. 1468 * 1469 * @param taskId Identifier of the task to be removed. 1470 * @return Returns true if the given task was found and removed. 1471 * 1472 * @hide 1473 */ 1474 public boolean removeTask(int taskId) throws SecurityException { 1475 try { 1476 return ActivityManagerNative.getDefault().removeTask(taskId); 1477 } catch (RemoteException e) { 1478 // System dead, we will be dead too soon! 1479 return false; 1480 } 1481 } 1482 1483 /** @hide */ 1484 public static class TaskThumbnail implements Parcelable { 1485 public Bitmap mainThumbnail; 1486 public ParcelFileDescriptor thumbnailFileDescriptor; 1487 1488 public TaskThumbnail() { 1489 } 1490 1491 public int describeContents() { 1492 if (thumbnailFileDescriptor != null) { 1493 return thumbnailFileDescriptor.describeContents(); 1494 } 1495 return 0; 1496 } 1497 1498 public void writeToParcel(Parcel dest, int flags) { 1499 if (mainThumbnail != null) { 1500 dest.writeInt(1); 1501 mainThumbnail.writeToParcel(dest, flags); 1502 } else { 1503 dest.writeInt(0); 1504 } 1505 if (thumbnailFileDescriptor != null) { 1506 dest.writeInt(1); 1507 thumbnailFileDescriptor.writeToParcel(dest, flags); 1508 } else { 1509 dest.writeInt(0); 1510 } 1511 } 1512 1513 public void readFromParcel(Parcel source) { 1514 if (source.readInt() != 0) { 1515 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1516 } else { 1517 mainThumbnail = null; 1518 } 1519 if (source.readInt() != 0) { 1520 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1521 } else { 1522 thumbnailFileDescriptor = null; 1523 } 1524 } 1525 1526 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1527 public TaskThumbnail createFromParcel(Parcel source) { 1528 return new TaskThumbnail(source); 1529 } 1530 public TaskThumbnail[] newArray(int size) { 1531 return new TaskThumbnail[size]; 1532 } 1533 }; 1534 1535 private TaskThumbnail(Parcel source) { 1536 readFromParcel(source); 1537 } 1538 } 1539 1540 /** @hide */ 1541 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1542 try { 1543 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1544 } catch (RemoteException e) { 1545 // System dead, we will be dead too soon! 1546 return null; 1547 } 1548 } 1549 1550 /** @hide */ 1551 public boolean isInHomeStack(int taskId) { 1552 try { 1553 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1554 } catch (RemoteException e) { 1555 // System dead, we will be dead too soon! 1556 return false; 1557 } 1558 } 1559 1560 /** 1561 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1562 * activity along with the task, so it is positioned immediately behind 1563 * the task. 1564 */ 1565 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1566 1567 /** 1568 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1569 * user-instigated action, so the current activity will not receive a 1570 * hint that the user is leaving. 1571 */ 1572 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1573 1574 /** 1575 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1576 * with a null options argument. 1577 * 1578 * @param taskId The identifier of the task to be moved, as found in 1579 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1580 * @param flags Additional operational flags, 0 or more of 1581 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1582 */ 1583 public void moveTaskToFront(int taskId, int flags) { 1584 moveTaskToFront(taskId, flags, null); 1585 } 1586 1587 /** 1588 * Ask that the task associated with a given task ID be moved to the 1589 * front of the stack, so it is now visible to the user. Requires that 1590 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1591 * or a SecurityException will be thrown. 1592 * 1593 * @param taskId The identifier of the task to be moved, as found in 1594 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1595 * @param flags Additional operational flags, 0 or more of 1596 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1597 * @param options Additional options for the operation, either null or 1598 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1599 * Context.startActivity(Intent, Bundle)}. 1600 */ 1601 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1602 try { 1603 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1604 } catch (RemoteException e) { 1605 // System dead, we will be dead too soon! 1606 } 1607 } 1608 1609 /** 1610 * Information you can retrieve about a particular Service that is 1611 * currently running in the system. 1612 */ 1613 public static class RunningServiceInfo implements Parcelable { 1614 /** 1615 * The service component. 1616 */ 1617 public ComponentName service; 1618 1619 /** 1620 * If non-zero, this is the process the service is running in. 1621 */ 1622 public int pid; 1623 1624 /** 1625 * The UID that owns this service. 1626 */ 1627 public int uid; 1628 1629 /** 1630 * The name of the process this service runs in. 1631 */ 1632 public String process; 1633 1634 /** 1635 * Set to true if the service has asked to run as a foreground process. 1636 */ 1637 public boolean foreground; 1638 1639 /** 1640 * The time when the service was first made active, either by someone 1641 * starting or binding to it. This 1642 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1643 */ 1644 public long activeSince; 1645 1646 /** 1647 * Set to true if this service has been explicitly started. 1648 */ 1649 public boolean started; 1650 1651 /** 1652 * Number of clients connected to the service. 1653 */ 1654 public int clientCount; 1655 1656 /** 1657 * Number of times the service's process has crashed while the service 1658 * is running. 1659 */ 1660 public int crashCount; 1661 1662 /** 1663 * The time when there was last activity in the service (either 1664 * explicit requests to start it or clients binding to it). This 1665 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1666 */ 1667 public long lastActivityTime; 1668 1669 /** 1670 * If non-zero, this service is not currently running, but scheduled to 1671 * restart at the given time. 1672 */ 1673 public long restarting; 1674 1675 /** 1676 * Bit for {@link #flags}: set if this service has been 1677 * explicitly started. 1678 */ 1679 public static final int FLAG_STARTED = 1<<0; 1680 1681 /** 1682 * Bit for {@link #flags}: set if the service has asked to 1683 * run as a foreground process. 1684 */ 1685 public static final int FLAG_FOREGROUND = 1<<1; 1686 1687 /** 1688 * Bit for {@link #flags): set if the service is running in a 1689 * core system process. 1690 */ 1691 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1692 1693 /** 1694 * Bit for {@link #flags): set if the service is running in a 1695 * persistent process. 1696 */ 1697 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1698 1699 /** 1700 * Running flags. 1701 */ 1702 public int flags; 1703 1704 /** 1705 * For special services that are bound to by system code, this is 1706 * the package that holds the binding. 1707 */ 1708 public String clientPackage; 1709 1710 /** 1711 * For special services that are bound to by system code, this is 1712 * a string resource providing a user-visible label for who the 1713 * client is. 1714 */ 1715 public int clientLabel; 1716 1717 public RunningServiceInfo() { 1718 } 1719 1720 public int describeContents() { 1721 return 0; 1722 } 1723 1724 public void writeToParcel(Parcel dest, int flags) { 1725 ComponentName.writeToParcel(service, dest); 1726 dest.writeInt(pid); 1727 dest.writeInt(uid); 1728 dest.writeString(process); 1729 dest.writeInt(foreground ? 1 : 0); 1730 dest.writeLong(activeSince); 1731 dest.writeInt(started ? 1 : 0); 1732 dest.writeInt(clientCount); 1733 dest.writeInt(crashCount); 1734 dest.writeLong(lastActivityTime); 1735 dest.writeLong(restarting); 1736 dest.writeInt(this.flags); 1737 dest.writeString(clientPackage); 1738 dest.writeInt(clientLabel); 1739 } 1740 1741 public void readFromParcel(Parcel source) { 1742 service = ComponentName.readFromParcel(source); 1743 pid = source.readInt(); 1744 uid = source.readInt(); 1745 process = source.readString(); 1746 foreground = source.readInt() != 0; 1747 activeSince = source.readLong(); 1748 started = source.readInt() != 0; 1749 clientCount = source.readInt(); 1750 crashCount = source.readInt(); 1751 lastActivityTime = source.readLong(); 1752 restarting = source.readLong(); 1753 flags = source.readInt(); 1754 clientPackage = source.readString(); 1755 clientLabel = source.readInt(); 1756 } 1757 1758 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1759 public RunningServiceInfo createFromParcel(Parcel source) { 1760 return new RunningServiceInfo(source); 1761 } 1762 public RunningServiceInfo[] newArray(int size) { 1763 return new RunningServiceInfo[size]; 1764 } 1765 }; 1766 1767 private RunningServiceInfo(Parcel source) { 1768 readFromParcel(source); 1769 } 1770 } 1771 1772 /** 1773 * Return a list of the services that are currently running. 1774 * 1775 * <p><b>Note: this method is only intended for debugging or implementing 1776 * service management type user interfaces.</b></p> 1777 * 1778 * @param maxNum The maximum number of entries to return in the list. The 1779 * actual number returned may be smaller, depending on how many services 1780 * are running. 1781 * 1782 * @return Returns a list of RunningServiceInfo records describing each of 1783 * the running tasks. 1784 */ 1785 public List<RunningServiceInfo> getRunningServices(int maxNum) 1786 throws SecurityException { 1787 try { 1788 return ActivityManagerNative.getDefault() 1789 .getServices(maxNum, 0); 1790 } catch (RemoteException e) { 1791 // System dead, we will be dead too soon! 1792 return null; 1793 } 1794 } 1795 1796 /** 1797 * Returns a PendingIntent you can start to show a control panel for the 1798 * given running service. If the service does not have a control panel, 1799 * null is returned. 1800 */ 1801 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1802 throws SecurityException { 1803 try { 1804 return ActivityManagerNative.getDefault() 1805 .getRunningServiceControlPanel(service); 1806 } catch (RemoteException e) { 1807 // System dead, we will be dead too soon! 1808 return null; 1809 } 1810 } 1811 1812 /** 1813 * Information you can retrieve about the available memory through 1814 * {@link ActivityManager#getMemoryInfo}. 1815 */ 1816 public static class MemoryInfo implements Parcelable { 1817 /** 1818 * The available memory on the system. This number should not 1819 * be considered absolute: due to the nature of the kernel, a significant 1820 * portion of this memory is actually in use and needed for the overall 1821 * system to run well. 1822 */ 1823 public long availMem; 1824 1825 /** 1826 * The total memory accessible by the kernel. This is basically the 1827 * RAM size of the device, not including below-kernel fixed allocations 1828 * like DMA buffers, RAM for the baseband CPU, etc. 1829 */ 1830 public long totalMem; 1831 1832 /** 1833 * The threshold of {@link #availMem} at which we consider memory to be 1834 * low and start killing background services and other non-extraneous 1835 * processes. 1836 */ 1837 public long threshold; 1838 1839 /** 1840 * Set to true if the system considers itself to currently be in a low 1841 * memory situation. 1842 */ 1843 public boolean lowMemory; 1844 1845 /** @hide */ 1846 public long hiddenAppThreshold; 1847 /** @hide */ 1848 public long secondaryServerThreshold; 1849 /** @hide */ 1850 public long visibleAppThreshold; 1851 /** @hide */ 1852 public long foregroundAppThreshold; 1853 1854 public MemoryInfo() { 1855 } 1856 1857 public int describeContents() { 1858 return 0; 1859 } 1860 1861 public void writeToParcel(Parcel dest, int flags) { 1862 dest.writeLong(availMem); 1863 dest.writeLong(totalMem); 1864 dest.writeLong(threshold); 1865 dest.writeInt(lowMemory ? 1 : 0); 1866 dest.writeLong(hiddenAppThreshold); 1867 dest.writeLong(secondaryServerThreshold); 1868 dest.writeLong(visibleAppThreshold); 1869 dest.writeLong(foregroundAppThreshold); 1870 } 1871 1872 public void readFromParcel(Parcel source) { 1873 availMem = source.readLong(); 1874 totalMem = source.readLong(); 1875 threshold = source.readLong(); 1876 lowMemory = source.readInt() != 0; 1877 hiddenAppThreshold = source.readLong(); 1878 secondaryServerThreshold = source.readLong(); 1879 visibleAppThreshold = source.readLong(); 1880 foregroundAppThreshold = source.readLong(); 1881 } 1882 1883 public static final Creator<MemoryInfo> CREATOR 1884 = new Creator<MemoryInfo>() { 1885 public MemoryInfo createFromParcel(Parcel source) { 1886 return new MemoryInfo(source); 1887 } 1888 public MemoryInfo[] newArray(int size) { 1889 return new MemoryInfo[size]; 1890 } 1891 }; 1892 1893 private MemoryInfo(Parcel source) { 1894 readFromParcel(source); 1895 } 1896 } 1897 1898 /** 1899 * Return general information about the memory state of the system. This 1900 * can be used to help decide how to manage your own memory, though note 1901 * that polling is not recommended and 1902 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1903 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1904 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1905 * level of your process as needed, which gives a better hint for how to 1906 * manage its memory. 1907 */ 1908 public void getMemoryInfo(MemoryInfo outInfo) { 1909 try { 1910 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1911 } catch (RemoteException e) { 1912 } 1913 } 1914 1915 /** 1916 * Information you can retrieve about an ActivityStack in the system. 1917 * @hide 1918 */ 1919 public static class StackInfo implements Parcelable { 1920 public int stackId; 1921 public Rect bounds = new Rect(); 1922 public int[] taskIds; 1923 public String[] taskNames; 1924 public Rect[] taskBounds; 1925 public int displayId; 1926 1927 @Override 1928 public int describeContents() { 1929 return 0; 1930 } 1931 1932 @Override 1933 public void writeToParcel(Parcel dest, int flags) { 1934 dest.writeInt(stackId); 1935 dest.writeInt(bounds.left); 1936 dest.writeInt(bounds.top); 1937 dest.writeInt(bounds.right); 1938 dest.writeInt(bounds.bottom); 1939 dest.writeIntArray(taskIds); 1940 dest.writeStringArray(taskNames); 1941 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 1942 dest.writeInt(boundsCount); 1943 for (int i = 0; i < boundsCount; i++) { 1944 dest.writeInt(taskBounds[i].left); 1945 dest.writeInt(taskBounds[i].top); 1946 dest.writeInt(taskBounds[i].right); 1947 dest.writeInt(taskBounds[i].bottom); 1948 } 1949 dest.writeInt(displayId); 1950 } 1951 1952 public void readFromParcel(Parcel source) { 1953 stackId = source.readInt(); 1954 bounds = new Rect( 1955 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1956 taskIds = source.createIntArray(); 1957 taskNames = source.createStringArray(); 1958 final int boundsCount = source.readInt(); 1959 if (boundsCount > 0) { 1960 taskBounds = new Rect[boundsCount]; 1961 for (int i = 0; i < boundsCount; i++) { 1962 taskBounds[i] = new Rect(); 1963 taskBounds[i].set( 1964 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1965 } 1966 } else { 1967 taskBounds = null; 1968 } 1969 displayId = source.readInt(); 1970 } 1971 1972 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 1973 @Override 1974 public StackInfo createFromParcel(Parcel source) { 1975 return new StackInfo(source); 1976 } 1977 @Override 1978 public StackInfo[] newArray(int size) { 1979 return new StackInfo[size]; 1980 } 1981 }; 1982 1983 public StackInfo() { 1984 } 1985 1986 private StackInfo(Parcel source) { 1987 readFromParcel(source); 1988 } 1989 1990 public String toString(String prefix) { 1991 StringBuilder sb = new StringBuilder(256); 1992 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 1993 sb.append(" bounds="); sb.append(bounds.toShortString()); 1994 sb.append(" displayId="); sb.append(displayId); 1995 sb.append("\n"); 1996 prefix = prefix + " "; 1997 for (int i = 0; i < taskIds.length; ++i) { 1998 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 1999 sb.append(": "); sb.append(taskNames[i]); 2000 if (taskBounds != null) { 2001 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2002 } 2003 sb.append("\n"); 2004 } 2005 return sb.toString(); 2006 } 2007 2008 @Override 2009 public String toString() { 2010 return toString(""); 2011 } 2012 } 2013 2014 /** 2015 * @hide 2016 */ 2017 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2018 try { 2019 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2020 observer, UserHandle.myUserId()); 2021 } catch (RemoteException e) { 2022 return false; 2023 } 2024 } 2025 2026 /** 2027 * Permits an application to erase its own data from disk. This is equivalent to 2028 * the user choosing to clear the app's data from within the device settings UI. It 2029 * erases all dynamic data associated with the app -- its private data and data in its 2030 * private area on external storage -- but does not remove the installed application 2031 * itself, nor any OBB files. 2032 * 2033 * @return {@code true} if the application successfully requested that the application's 2034 * data be erased; {@code false} otherwise. 2035 */ 2036 public boolean clearApplicationUserData() { 2037 return clearApplicationUserData(mContext.getPackageName(), null); 2038 } 2039 2040 /** 2041 * Information you can retrieve about any processes that are in an error condition. 2042 */ 2043 public static class ProcessErrorStateInfo implements Parcelable { 2044 /** 2045 * Condition codes 2046 */ 2047 public static final int NO_ERROR = 0; 2048 public static final int CRASHED = 1; 2049 public static final int NOT_RESPONDING = 2; 2050 2051 /** 2052 * The condition that the process is in. 2053 */ 2054 public int condition; 2055 2056 /** 2057 * The process name in which the crash or error occurred. 2058 */ 2059 public String processName; 2060 2061 /** 2062 * The pid of this process; 0 if none 2063 */ 2064 public int pid; 2065 2066 /** 2067 * The kernel user-ID that has been assigned to this process; 2068 * currently this is not a unique ID (multiple applications can have 2069 * the same uid). 2070 */ 2071 public int uid; 2072 2073 /** 2074 * The activity name associated with the error, if known. May be null. 2075 */ 2076 public String tag; 2077 2078 /** 2079 * A short message describing the error condition. 2080 */ 2081 public String shortMsg; 2082 2083 /** 2084 * A long message describing the error condition. 2085 */ 2086 public String longMsg; 2087 2088 /** 2089 * The stack trace where the error originated. May be null. 2090 */ 2091 public String stackTrace; 2092 2093 /** 2094 * to be deprecated: This value will always be null. 2095 */ 2096 public byte[] crashData = null; 2097 2098 public ProcessErrorStateInfo() { 2099 } 2100 2101 @Override 2102 public int describeContents() { 2103 return 0; 2104 } 2105 2106 @Override 2107 public void writeToParcel(Parcel dest, int flags) { 2108 dest.writeInt(condition); 2109 dest.writeString(processName); 2110 dest.writeInt(pid); 2111 dest.writeInt(uid); 2112 dest.writeString(tag); 2113 dest.writeString(shortMsg); 2114 dest.writeString(longMsg); 2115 dest.writeString(stackTrace); 2116 } 2117 2118 public void readFromParcel(Parcel source) { 2119 condition = source.readInt(); 2120 processName = source.readString(); 2121 pid = source.readInt(); 2122 uid = source.readInt(); 2123 tag = source.readString(); 2124 shortMsg = source.readString(); 2125 longMsg = source.readString(); 2126 stackTrace = source.readString(); 2127 } 2128 2129 public static final Creator<ProcessErrorStateInfo> CREATOR = 2130 new Creator<ProcessErrorStateInfo>() { 2131 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2132 return new ProcessErrorStateInfo(source); 2133 } 2134 public ProcessErrorStateInfo[] newArray(int size) { 2135 return new ProcessErrorStateInfo[size]; 2136 } 2137 }; 2138 2139 private ProcessErrorStateInfo(Parcel source) { 2140 readFromParcel(source); 2141 } 2142 } 2143 2144 /** 2145 * Returns a list of any processes that are currently in an error condition. The result 2146 * will be null if all processes are running properly at this time. 2147 * 2148 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2149 * current error conditions (it will not return an empty list). This list ordering is not 2150 * specified. 2151 */ 2152 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2153 try { 2154 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2155 } catch (RemoteException e) { 2156 return null; 2157 } 2158 } 2159 2160 /** 2161 * Information you can retrieve about a running process. 2162 */ 2163 public static class RunningAppProcessInfo implements Parcelable { 2164 /** 2165 * The name of the process that this object is associated with 2166 */ 2167 public String processName; 2168 2169 /** 2170 * The pid of this process; 0 if none 2171 */ 2172 public int pid; 2173 2174 /** 2175 * The user id of this process. 2176 */ 2177 public int uid; 2178 2179 /** 2180 * All packages that have been loaded into the process. 2181 */ 2182 public String pkgList[]; 2183 2184 /** 2185 * Constant for {@link #flags}: this is an app that is unable to 2186 * correctly save its state when going to the background, 2187 * so it can not be killed while in the background. 2188 * @hide 2189 */ 2190 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2191 2192 /** 2193 * Constant for {@link #flags}: this process is associated with a 2194 * persistent system app. 2195 * @hide 2196 */ 2197 public static final int FLAG_PERSISTENT = 1<<1; 2198 2199 /** 2200 * Constant for {@link #flags}: this process is associated with a 2201 * persistent system app. 2202 * @hide 2203 */ 2204 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2205 2206 /** 2207 * Flags of information. May be any of 2208 * {@link #FLAG_CANT_SAVE_STATE}. 2209 * @hide 2210 */ 2211 public int flags; 2212 2213 /** 2214 * Last memory trim level reported to the process: corresponds to 2215 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2216 * ComponentCallbacks2.onTrimMemory(int)}. 2217 */ 2218 public int lastTrimLevel; 2219 2220 /** 2221 * Constant for {@link #importance}: This process is running the 2222 * foreground UI; that is, it is the thing currently at the top of the screen 2223 * that the user is interacting with. 2224 */ 2225 public static final int IMPORTANCE_FOREGROUND = 100; 2226 2227 /** 2228 * Constant for {@link #importance}: This process is running a foreground 2229 * service, for example to perform music playback even while the user is 2230 * not immediately in the app. This generally indicates that the process 2231 * is doing something the user actively cares about. 2232 */ 2233 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2234 2235 /** 2236 * Constant for {@link #importance}: This process is running the foreground 2237 * UI, but the device is asleep so it is not visible to the user. This means 2238 * the user is not really aware of the process, because they can not see or 2239 * interact with it, but it is quite important because it what they expect to 2240 * return to once unlocking the device. 2241 */ 2242 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2243 2244 /** 2245 * Constant for {@link #importance}: This process is running something 2246 * that is actively visible to the user, though not in the immediate 2247 * foreground. This may be running a window that is behind the current 2248 * foreground (so paused and with its state saved, not interacting with 2249 * the user, but visible to them to some degree); it may also be running 2250 * other services under the system's control that it inconsiders important. 2251 */ 2252 public static final int IMPORTANCE_VISIBLE = 200; 2253 2254 /** 2255 * Constant for {@link #importance}: This process is not something the user 2256 * is directly aware of, but is otherwise perceptable to them to some degree. 2257 */ 2258 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2259 2260 /** 2261 * Constant for {@link #importance}: This process is running an 2262 * application that can not save its state, and thus can't be killed 2263 * while in the background. 2264 * @hide 2265 */ 2266 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2267 2268 /** 2269 * Constant for {@link #importance}: This process is contains services 2270 * that should remain running. These are background services apps have 2271 * started, not something the user is aware of, so they may be killed by 2272 * the system relatively freely (though it is generally desired that they 2273 * stay running as long as they want to). 2274 */ 2275 public static final int IMPORTANCE_SERVICE = 300; 2276 2277 /** 2278 * Constant for {@link #importance}: This process process contains 2279 * background code that is expendable. 2280 */ 2281 public static final int IMPORTANCE_BACKGROUND = 400; 2282 2283 /** 2284 * Constant for {@link #importance}: This process is empty of any 2285 * actively running code. 2286 */ 2287 public static final int IMPORTANCE_EMPTY = 500; 2288 2289 /** 2290 * Constant for {@link #importance}: This process does not exist. 2291 */ 2292 public static final int IMPORTANCE_GONE = 1000; 2293 2294 /** @hide */ 2295 public static int procStateToImportance(int procState) { 2296 if (procState == PROCESS_STATE_NONEXISTENT) { 2297 return IMPORTANCE_GONE; 2298 } else if (procState >= PROCESS_STATE_HOME) { 2299 return IMPORTANCE_BACKGROUND; 2300 } else if (procState >= PROCESS_STATE_SERVICE) { 2301 return IMPORTANCE_SERVICE; 2302 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2303 return IMPORTANCE_CANT_SAVE_STATE; 2304 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2305 return IMPORTANCE_PERCEPTIBLE; 2306 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2307 return IMPORTANCE_VISIBLE; 2308 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2309 return IMPORTANCE_TOP_SLEEPING; 2310 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2311 return IMPORTANCE_FOREGROUND_SERVICE; 2312 } else { 2313 return IMPORTANCE_FOREGROUND; 2314 } 2315 } 2316 2317 /** 2318 * The relative importance level that the system places on this 2319 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2320 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2321 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2322 * constants are numbered so that "more important" values are always 2323 * smaller than "less important" values. 2324 */ 2325 public int importance; 2326 2327 /** 2328 * An additional ordering within a particular {@link #importance} 2329 * category, providing finer-grained information about the relative 2330 * utility of processes within a category. This number means nothing 2331 * except that a smaller values are more recently used (and thus 2332 * more important). Currently an LRU value is only maintained for 2333 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2334 * be maintained in the future. 2335 */ 2336 public int lru; 2337 2338 /** 2339 * Constant for {@link #importanceReasonCode}: nothing special has 2340 * been specified for the reason for this level. 2341 */ 2342 public static final int REASON_UNKNOWN = 0; 2343 2344 /** 2345 * Constant for {@link #importanceReasonCode}: one of the application's 2346 * content providers is being used by another process. The pid of 2347 * the client process is in {@link #importanceReasonPid} and the 2348 * target provider in this process is in 2349 * {@link #importanceReasonComponent}. 2350 */ 2351 public static final int REASON_PROVIDER_IN_USE = 1; 2352 2353 /** 2354 * Constant for {@link #importanceReasonCode}: one of the application's 2355 * content providers is being used by another process. The pid of 2356 * the client process is in {@link #importanceReasonPid} and the 2357 * target provider in this process is in 2358 * {@link #importanceReasonComponent}. 2359 */ 2360 public static final int REASON_SERVICE_IN_USE = 2; 2361 2362 /** 2363 * The reason for {@link #importance}, if any. 2364 */ 2365 public int importanceReasonCode; 2366 2367 /** 2368 * For the specified values of {@link #importanceReasonCode}, this 2369 * is the process ID of the other process that is a client of this 2370 * process. This will be 0 if no other process is using this one. 2371 */ 2372 public int importanceReasonPid; 2373 2374 /** 2375 * For the specified values of {@link #importanceReasonCode}, this 2376 * is the name of the component that is being used in this process. 2377 */ 2378 public ComponentName importanceReasonComponent; 2379 2380 /** 2381 * When {@link #importanceReasonPid} is non-0, this is the importance 2382 * of the other pid. @hide 2383 */ 2384 public int importanceReasonImportance; 2385 2386 /** 2387 * Current process state, as per PROCESS_STATE_* constants. 2388 * @hide 2389 */ 2390 public int processState; 2391 2392 public RunningAppProcessInfo() { 2393 importance = IMPORTANCE_FOREGROUND; 2394 importanceReasonCode = REASON_UNKNOWN; 2395 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2396 } 2397 2398 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2399 processName = pProcessName; 2400 pid = pPid; 2401 pkgList = pArr; 2402 } 2403 2404 public int describeContents() { 2405 return 0; 2406 } 2407 2408 public void writeToParcel(Parcel dest, int flags) { 2409 dest.writeString(processName); 2410 dest.writeInt(pid); 2411 dest.writeInt(uid); 2412 dest.writeStringArray(pkgList); 2413 dest.writeInt(this.flags); 2414 dest.writeInt(lastTrimLevel); 2415 dest.writeInt(importance); 2416 dest.writeInt(lru); 2417 dest.writeInt(importanceReasonCode); 2418 dest.writeInt(importanceReasonPid); 2419 ComponentName.writeToParcel(importanceReasonComponent, dest); 2420 dest.writeInt(importanceReasonImportance); 2421 dest.writeInt(processState); 2422 } 2423 2424 public void readFromParcel(Parcel source) { 2425 processName = source.readString(); 2426 pid = source.readInt(); 2427 uid = source.readInt(); 2428 pkgList = source.readStringArray(); 2429 flags = source.readInt(); 2430 lastTrimLevel = source.readInt(); 2431 importance = source.readInt(); 2432 lru = source.readInt(); 2433 importanceReasonCode = source.readInt(); 2434 importanceReasonPid = source.readInt(); 2435 importanceReasonComponent = ComponentName.readFromParcel(source); 2436 importanceReasonImportance = source.readInt(); 2437 processState = source.readInt(); 2438 } 2439 2440 public static final Creator<RunningAppProcessInfo> CREATOR = 2441 new Creator<RunningAppProcessInfo>() { 2442 public RunningAppProcessInfo createFromParcel(Parcel source) { 2443 return new RunningAppProcessInfo(source); 2444 } 2445 public RunningAppProcessInfo[] newArray(int size) { 2446 return new RunningAppProcessInfo[size]; 2447 } 2448 }; 2449 2450 private RunningAppProcessInfo(Parcel source) { 2451 readFromParcel(source); 2452 } 2453 } 2454 2455 /** 2456 * Returns a list of application processes installed on external media 2457 * that are running on the device. 2458 * 2459 * <p><b>Note: this method is only intended for debugging or building 2460 * a user-facing process management UI.</b></p> 2461 * 2462 * @return Returns a list of ApplicationInfo records, or null if none 2463 * This list ordering is not specified. 2464 * @hide 2465 */ 2466 public List<ApplicationInfo> getRunningExternalApplications() { 2467 try { 2468 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2469 } catch (RemoteException e) { 2470 return null; 2471 } 2472 } 2473 2474 /** 2475 * Sets the memory trim mode for a process and schedules a memory trim operation. 2476 * 2477 * <p><b>Note: this method is only intended for testing framework.</b></p> 2478 * 2479 * @return Returns true if successful. 2480 * @hide 2481 */ 2482 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2483 try { 2484 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2485 level); 2486 } catch (RemoteException e) { 2487 return false; 2488 } 2489 } 2490 2491 /** 2492 * Returns a list of application processes that are running on the device. 2493 * 2494 * <p><b>Note: this method is only intended for debugging or building 2495 * a user-facing process management UI.</b></p> 2496 * 2497 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2498 * running processes (it will not return an empty list). This list ordering is not 2499 * specified. 2500 */ 2501 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2502 try { 2503 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2504 } catch (RemoteException e) { 2505 return null; 2506 } 2507 } 2508 2509 /** 2510 * Return the importance of a given package name, based on the processes that are 2511 * currently running. The return value is one of the importance constants defined 2512 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2513 * processes that this package has code running inside of. If there are no processes 2514 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2515 * @hide 2516 */ 2517 @SystemApi 2518 public int getPackageImportance(String packageName) { 2519 try { 2520 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2521 mContext.getOpPackageName()); 2522 return RunningAppProcessInfo.procStateToImportance(procState); 2523 } catch (RemoteException e) { 2524 return RunningAppProcessInfo.IMPORTANCE_GONE; 2525 } 2526 } 2527 2528 /** 2529 * Return global memory state information for the calling process. This 2530 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2531 * only fields that will be filled in are 2532 * {@link RunningAppProcessInfo#pid}, 2533 * {@link RunningAppProcessInfo#uid}, 2534 * {@link RunningAppProcessInfo#lastTrimLevel}, 2535 * {@link RunningAppProcessInfo#importance}, 2536 * {@link RunningAppProcessInfo#lru}, and 2537 * {@link RunningAppProcessInfo#importanceReasonCode}. 2538 */ 2539 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2540 try { 2541 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2542 } catch (RemoteException e) { 2543 } 2544 } 2545 2546 /** 2547 * Return information about the memory usage of one or more processes. 2548 * 2549 * <p><b>Note: this method is only intended for debugging or building 2550 * a user-facing process management UI.</b></p> 2551 * 2552 * @param pids The pids of the processes whose memory usage is to be 2553 * retrieved. 2554 * @return Returns an array of memory information, one for each 2555 * requested pid. 2556 */ 2557 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2558 try { 2559 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2560 } catch (RemoteException e) { 2561 return null; 2562 } 2563 } 2564 2565 /** 2566 * @deprecated This is now just a wrapper for 2567 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2568 * is no longer available to applications because it allows them to 2569 * break other applications by removing their alarms, stopping their 2570 * services, etc. 2571 */ 2572 @Deprecated 2573 public void restartPackage(String packageName) { 2574 killBackgroundProcesses(packageName); 2575 } 2576 2577 /** 2578 * Have the system immediately kill all background processes associated 2579 * with the given package. This is the same as the kernel killing those 2580 * processes to reclaim memory; the system will take care of restarting 2581 * these processes in the future as needed. 2582 * 2583 * <p>You must hold the permission 2584 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2585 * call this method. 2586 * 2587 * @param packageName The name of the package whose processes are to 2588 * be killed. 2589 */ 2590 public void killBackgroundProcesses(String packageName) { 2591 try { 2592 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2593 UserHandle.myUserId()); 2594 } catch (RemoteException e) { 2595 } 2596 } 2597 2598 /** 2599 * Kills the specified UID. 2600 * @param uid The UID to kill. 2601 * @param reason The reason for the kill. 2602 * 2603 * @hide 2604 */ 2605 @RequiresPermission(Manifest.permission.KILL_UID) 2606 public void killUid(int uid, String reason) { 2607 try { 2608 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2609 UserHandle.getUserId(uid), reason); 2610 } catch (RemoteException e) { 2611 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2612 } 2613 } 2614 2615 /** 2616 * Have the system perform a force stop of everything associated with 2617 * the given application package. All processes that share its uid 2618 * will be killed, all services it has running stopped, all activities 2619 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2620 * broadcast will be sent, so that any of its registered alarms can 2621 * be stopped, notifications removed, etc. 2622 * 2623 * <p>You must hold the permission 2624 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2625 * call this method. 2626 * 2627 * @param packageName The name of the package to be stopped. 2628 * @param userId The user for which the running package is to be stopped. 2629 * 2630 * @hide This is not available to third party applications due to 2631 * it allowing them to break other applications by stopping their 2632 * services, removing their alarms, etc. 2633 */ 2634 public void forceStopPackageAsUser(String packageName, int userId) { 2635 try { 2636 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2637 } catch (RemoteException e) { 2638 } 2639 } 2640 2641 /** 2642 * @see #forceStopPackageAsUser(String, int) 2643 * @hide 2644 */ 2645 public void forceStopPackage(String packageName) { 2646 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2647 } 2648 2649 /** 2650 * Get the device configuration attributes. 2651 */ 2652 public ConfigurationInfo getDeviceConfigurationInfo() { 2653 try { 2654 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2655 } catch (RemoteException e) { 2656 } 2657 return null; 2658 } 2659 2660 /** 2661 * Get the preferred density of icons for the launcher. This is used when 2662 * custom drawables are created (e.g., for shortcuts). 2663 * 2664 * @return density in terms of DPI 2665 */ 2666 public int getLauncherLargeIconDensity() { 2667 final Resources res = mContext.getResources(); 2668 final int density = res.getDisplayMetrics().densityDpi; 2669 final int sw = res.getConfiguration().smallestScreenWidthDp; 2670 2671 if (sw < 600) { 2672 // Smaller than approx 7" tablets, use the regular icon size. 2673 return density; 2674 } 2675 2676 switch (density) { 2677 case DisplayMetrics.DENSITY_LOW: 2678 return DisplayMetrics.DENSITY_MEDIUM; 2679 case DisplayMetrics.DENSITY_MEDIUM: 2680 return DisplayMetrics.DENSITY_HIGH; 2681 case DisplayMetrics.DENSITY_TV: 2682 return DisplayMetrics.DENSITY_XHIGH; 2683 case DisplayMetrics.DENSITY_HIGH: 2684 return DisplayMetrics.DENSITY_XHIGH; 2685 case DisplayMetrics.DENSITY_XHIGH: 2686 return DisplayMetrics.DENSITY_XXHIGH; 2687 case DisplayMetrics.DENSITY_XXHIGH: 2688 return DisplayMetrics.DENSITY_XHIGH * 2; 2689 default: 2690 // The density is some abnormal value. Return some other 2691 // abnormal value that is a reasonable scaling of it. 2692 return (int)((density*1.5f)+.5f); 2693 } 2694 } 2695 2696 /** 2697 * Get the preferred launcher icon size. This is used when custom drawables 2698 * are created (e.g., for shortcuts). 2699 * 2700 * @return dimensions of square icons in terms of pixels 2701 */ 2702 public int getLauncherLargeIconSize() { 2703 return getLauncherLargeIconSizeInner(mContext); 2704 } 2705 2706 static int getLauncherLargeIconSizeInner(Context context) { 2707 final Resources res = context.getResources(); 2708 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2709 final int sw = res.getConfiguration().smallestScreenWidthDp; 2710 2711 if (sw < 600) { 2712 // Smaller than approx 7" tablets, use the regular icon size. 2713 return size; 2714 } 2715 2716 final int density = res.getDisplayMetrics().densityDpi; 2717 2718 switch (density) { 2719 case DisplayMetrics.DENSITY_LOW: 2720 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2721 case DisplayMetrics.DENSITY_MEDIUM: 2722 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2723 case DisplayMetrics.DENSITY_TV: 2724 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2725 case DisplayMetrics.DENSITY_HIGH: 2726 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2727 case DisplayMetrics.DENSITY_XHIGH: 2728 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2729 case DisplayMetrics.DENSITY_XXHIGH: 2730 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2731 default: 2732 // The density is some abnormal value. Return some other 2733 // abnormal value that is a reasonable scaling of it. 2734 return (int)((size*1.5f) + .5f); 2735 } 2736 } 2737 2738 /** 2739 * Returns "true" if the user interface is currently being messed with 2740 * by a monkey. 2741 */ 2742 public static boolean isUserAMonkey() { 2743 try { 2744 return ActivityManagerNative.getDefault().isUserAMonkey(); 2745 } catch (RemoteException e) { 2746 } 2747 return false; 2748 } 2749 2750 /** 2751 * Returns "true" if device is running in a test harness. 2752 */ 2753 public static boolean isRunningInTestHarness() { 2754 return SystemProperties.getBoolean("ro.test_harness", false); 2755 } 2756 2757 /** 2758 * Returns the launch count of each installed package. 2759 * 2760 * @hide 2761 */ 2762 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2763 try { 2764 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2765 ServiceManager.getService("usagestats")); 2766 if (usageStatsService == null) { 2767 return new HashMap<String, Integer>(); 2768 } 2769 2770 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2771 ActivityThread.currentPackageName()); 2772 if (allPkgUsageStats == null) { 2773 return new HashMap<String, Integer>(); 2774 } 2775 2776 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2777 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2778 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2779 } 2780 2781 return launchCounts; 2782 } catch (RemoteException e) { 2783 Log.w(TAG, "Could not query launch counts", e); 2784 return new HashMap<String, Integer>(); 2785 } 2786 }*/ 2787 2788 /** @hide */ 2789 public static int checkComponentPermission(String permission, int uid, 2790 int owningUid, boolean exported) { 2791 // Root, system server get to do everything. 2792 final int appId = UserHandle.getAppId(uid); 2793 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2794 return PackageManager.PERMISSION_GRANTED; 2795 } 2796 // Isolated processes don't get any permissions. 2797 if (UserHandle.isIsolated(uid)) { 2798 return PackageManager.PERMISSION_DENIED; 2799 } 2800 // If there is a uid that owns whatever is being accessed, it has 2801 // blanket access to it regardless of the permissions it requires. 2802 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2803 return PackageManager.PERMISSION_GRANTED; 2804 } 2805 // If the target is not exported, then nobody else can get to it. 2806 if (!exported) { 2807 /* 2808 RuntimeException here = new RuntimeException("here"); 2809 here.fillInStackTrace(); 2810 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2811 here); 2812 */ 2813 return PackageManager.PERMISSION_DENIED; 2814 } 2815 if (permission == null) { 2816 return PackageManager.PERMISSION_GRANTED; 2817 } 2818 try { 2819 return AppGlobals.getPackageManager() 2820 .checkUidPermission(permission, uid); 2821 } catch (RemoteException e) { 2822 // Should never happen, but if it does... deny! 2823 Slog.e(TAG, "PackageManager is dead?!?", e); 2824 } 2825 return PackageManager.PERMISSION_DENIED; 2826 } 2827 2828 /** @hide */ 2829 public static int checkUidPermission(String permission, int uid) { 2830 try { 2831 return AppGlobals.getPackageManager() 2832 .checkUidPermission(permission, uid); 2833 } catch (RemoteException e) { 2834 // Should never happen, but if it does... deny! 2835 Slog.e(TAG, "PackageManager is dead?!?", e); 2836 } 2837 return PackageManager.PERMISSION_DENIED; 2838 } 2839 2840 /** 2841 * @hide 2842 * Helper for dealing with incoming user arguments to system service calls. 2843 * Takes care of checking permissions and converting USER_CURRENT to the 2844 * actual current user. 2845 * 2846 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2847 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2848 * @param userId The user id argument supplied by the caller -- this is the user 2849 * they want to run as. 2850 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2851 * to get a USER_ALL returned and deal with it correctly. If false, 2852 * an exception will be thrown if USER_ALL is supplied. 2853 * @param requireFull If true, the caller must hold 2854 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2855 * different user than their current process; otherwise they must hold 2856 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2857 * @param name Optional textual name of the incoming call; only for generating error messages. 2858 * @param callerPackage Optional package name of caller; only for error messages. 2859 * 2860 * @return Returns the user ID that the call should run as. Will always be a concrete 2861 * user number, unless <var>allowAll</var> is true in which case it could also be 2862 * USER_ALL. 2863 */ 2864 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2865 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2866 if (UserHandle.getUserId(callingUid) == userId) { 2867 return userId; 2868 } 2869 try { 2870 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2871 callingUid, userId, allowAll, requireFull, name, callerPackage); 2872 } catch (RemoteException e) { 2873 throw new SecurityException("Failed calling activity manager", e); 2874 } 2875 } 2876 2877 /** 2878 * Gets the userId of the current foreground user. Requires system permissions. 2879 * @hide 2880 */ 2881 @SystemApi 2882 public static int getCurrentUser() { 2883 UserInfo ui; 2884 try { 2885 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2886 return ui != null ? ui.id : 0; 2887 } catch (RemoteException e) { 2888 return 0; 2889 } 2890 } 2891 2892 /** 2893 * @param userid the user's id. Zero indicates the default user. 2894 * @hide 2895 */ 2896 public boolean switchUser(int userid) { 2897 try { 2898 return ActivityManagerNative.getDefault().switchUser(userid); 2899 } catch (RemoteException e) { 2900 return false; 2901 } 2902 } 2903 2904 /** 2905 * Return whether the given user is actively running. This means that 2906 * the user is in the "started" state, not "stopped" -- it is currently 2907 * allowed to run code through scheduled alarms, receiving broadcasts, 2908 * etc. A started user may be either the current foreground user or a 2909 * background user; the result here does not distinguish between the two. 2910 * @param userid the user's id. Zero indicates the default user. 2911 * @hide 2912 */ 2913 public boolean isUserRunning(int userid) { 2914 try { 2915 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2916 } catch (RemoteException e) { 2917 return false; 2918 } 2919 } 2920 2921 /** 2922 * Perform a system dump of various state associated with the given application 2923 * package name. This call blocks while the dump is being performed, so should 2924 * not be done on a UI thread. The data will be written to the given file 2925 * descriptor as text. An application must hold the 2926 * {@link android.Manifest.permission#DUMP} permission to make this call. 2927 * @param fd The file descriptor that the dump should be written to. The file 2928 * descriptor is <em>not</em> closed by this function; the caller continues to 2929 * own it. 2930 * @param packageName The name of the package that is to be dumped. 2931 */ 2932 public void dumpPackageState(FileDescriptor fd, String packageName) { 2933 dumpPackageStateStatic(fd, packageName); 2934 } 2935 2936 /** 2937 * @hide 2938 */ 2939 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2940 FileOutputStream fout = new FileOutputStream(fd); 2941 PrintWriter pw = new FastPrintWriter(fout); 2942 dumpService(pw, fd, "package", new String[] { packageName }); 2943 pw.println(); 2944 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2945 "-a", "package", packageName }); 2946 pw.println(); 2947 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2948 pw.println(); 2949 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2950 pw.println(); 2951 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2952 pw.println(); 2953 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2954 pw.flush(); 2955 } 2956 2957 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2958 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2959 IBinder service = ServiceManager.checkService(name); 2960 if (service == null) { 2961 pw.println(" (Service not found)"); 2962 return; 2963 } 2964 TransferPipe tp = null; 2965 try { 2966 pw.flush(); 2967 tp = new TransferPipe(); 2968 tp.setBufferPrefix(" "); 2969 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 2970 tp.go(fd, 10000); 2971 } catch (Throwable e) { 2972 if (tp != null) { 2973 tp.kill(); 2974 } 2975 pw.println("Failure dumping service:"); 2976 e.printStackTrace(pw); 2977 } 2978 } 2979 2980 /** 2981 * Request that the system start watching for the calling process to exceed a pss 2982 * size as given here. Once called, the system will look for any occasions where it 2983 * sees the associated process with a larger pss size and, when this happens, automatically 2984 * pull a heap dump from it and allow the user to share the data. Note that this request 2985 * continues running even if the process is killed and restarted. To remove the watch, 2986 * use {@link #clearWatchHeapLimit()}. 2987 * 2988 * <p>This API only work if the calling process has been marked as 2989 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 2990 * (userdebug or eng) build.</p> 2991 * 2992 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 2993 * handle heap limit reports themselves.</p> 2994 * 2995 * @param pssSize The size in bytes to set the limit at. 2996 */ 2997 public void setWatchHeapLimit(long pssSize) { 2998 try { 2999 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3000 mContext.getPackageName()); 3001 } catch (RemoteException e) { 3002 } 3003 } 3004 3005 /** 3006 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3007 * If your package has an activity handling this action, it will be launched with the 3008 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3009 * match the activty must support this action and a MIME type of "*/*". 3010 */ 3011 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3012 3013 /** 3014 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3015 */ 3016 public void clearWatchHeapLimit() { 3017 try { 3018 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3019 } catch (RemoteException e) { 3020 } 3021 } 3022 3023 /** 3024 * @hide 3025 */ 3026 public void startLockTaskMode(int taskId) { 3027 try { 3028 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3029 } catch (RemoteException e) { 3030 } 3031 } 3032 3033 /** 3034 * @hide 3035 */ 3036 public void stopLockTaskMode() { 3037 try { 3038 ActivityManagerNative.getDefault().stopLockTaskMode(); 3039 } catch (RemoteException e) { 3040 } 3041 } 3042 3043 /** 3044 * Return whether currently in lock task mode. When in this mode 3045 * no new tasks can be created or switched to. 3046 * 3047 * @see Activity#startLockTask() 3048 * 3049 * @deprecated Use {@link #getLockTaskModeState} instead. 3050 */ 3051 public boolean isInLockTaskMode() { 3052 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3053 } 3054 3055 /** 3056 * Return the current state of task locking. The three possible outcomes 3057 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3058 * and {@link #LOCK_TASK_MODE_PINNED}. 3059 * 3060 * @see Activity#startLockTask() 3061 */ 3062 public int getLockTaskModeState() { 3063 try { 3064 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3065 } catch (RemoteException e) { 3066 return ActivityManager.LOCK_TASK_MODE_NONE; 3067 } 3068 } 3069 3070 /** 3071 * The AppTask allows you to manage your own application's tasks. 3072 * See {@link android.app.ActivityManager#getAppTasks()} 3073 */ 3074 public static class AppTask { 3075 private IAppTask mAppTaskImpl; 3076 3077 /** @hide */ 3078 public AppTask(IAppTask task) { 3079 mAppTaskImpl = task; 3080 } 3081 3082 /** 3083 * Finishes all activities in this task and removes it from the recent tasks list. 3084 */ 3085 public void finishAndRemoveTask() { 3086 try { 3087 mAppTaskImpl.finishAndRemoveTask(); 3088 } catch (RemoteException e) { 3089 Slog.e(TAG, "Invalid AppTask", e); 3090 } 3091 } 3092 3093 /** 3094 * Get the RecentTaskInfo associated with this task. 3095 * 3096 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3097 */ 3098 public RecentTaskInfo getTaskInfo() { 3099 try { 3100 return mAppTaskImpl.getTaskInfo(); 3101 } catch (RemoteException e) { 3102 Slog.e(TAG, "Invalid AppTask", e); 3103 return null; 3104 } 3105 } 3106 3107 /** 3108 * Bring this task to the foreground. If it contains activities, they will be 3109 * brought to the foreground with it and their instances re-created if needed. 3110 * If it doesn't contain activities, the root activity of the task will be 3111 * re-launched. 3112 */ 3113 public void moveToFront() { 3114 try { 3115 mAppTaskImpl.moveToFront(); 3116 } catch (RemoteException e) { 3117 Slog.e(TAG, "Invalid AppTask", e); 3118 } 3119 } 3120 3121 /** 3122 * Start an activity in this task. Brings the task to the foreground. If this task 3123 * is not currently active (that is, its id < 0), then a new activity for the given 3124 * Intent will be launched as the root of the task and the task brought to the 3125 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3126 * an activity to launch in a new task, then a new activity for the given Intent will 3127 * be launched on top of the task and the task brought to the foreground. If this 3128 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3129 * or would otherwise be launched in to a new task, then the activity not launched but 3130 * this task be brought to the foreground and a new intent delivered to the top 3131 * activity if appropriate. 3132 * 3133 * <p>In other words, you generally want to use an Intent here that does not specify 3134 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3135 * and let the system do the right thing.</p> 3136 * 3137 * @param intent The Intent describing the new activity to be launched on the task. 3138 * @param options Optional launch options. 3139 * 3140 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3141 */ 3142 public void startActivity(Context context, Intent intent, Bundle options) { 3143 ActivityThread thread = ActivityThread.currentActivityThread(); 3144 thread.getInstrumentation().execStartActivityFromAppTask(context, 3145 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3146 } 3147 3148 /** 3149 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3150 * Intent of this AppTask. 3151 * 3152 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3153 * be set; otherwise, it will be cleared. 3154 */ 3155 public void setExcludeFromRecents(boolean exclude) { 3156 try { 3157 mAppTaskImpl.setExcludeFromRecents(exclude); 3158 } catch (RemoteException e) { 3159 Slog.e(TAG, "Invalid AppTask", e); 3160 } 3161 } 3162 } 3163} 3164