ActivityManager.java revision 75b3720c50752d988d361a57b2d32f8baaee3e28
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 77 private static int gMaxRecentTasks = -1; 78 79 private final Context mContext; 80 private final Handler mHandler; 81 82 /** 83 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 84 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 85 * uninstalled in lieu of the declaring one. The package named here must be 86 * signed with the same certificate as the one declaring the {@code <meta-data>}. 87 */ 88 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 89 90 /** 91 * Result for IActivityManager.startActivity: trying to start a background user 92 * activity that shouldn't be displayed for all users. 93 * @hide 94 */ 95 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 96 97 /** 98 * Result for IActivityManager.startActivity: trying to start an activity under voice 99 * control when that activity does not support the VOICE category. 100 * @hide 101 */ 102 public static final int START_NOT_VOICE_COMPATIBLE = -7; 103 104 /** 105 * Result for IActivityManager.startActivity: an error where the 106 * start had to be canceled. 107 * @hide 108 */ 109 public static final int START_CANCELED = -6; 110 111 /** 112 * Result for IActivityManager.startActivity: an error where the 113 * thing being started is not an activity. 114 * @hide 115 */ 116 public static final int START_NOT_ACTIVITY = -5; 117 118 /** 119 * Result for IActivityManager.startActivity: an error where the 120 * caller does not have permission to start the activity. 121 * @hide 122 */ 123 public static final int START_PERMISSION_DENIED = -4; 124 125 /** 126 * Result for IActivityManager.startActivity: an error where the 127 * caller has requested both to forward a result and to receive 128 * a result. 129 * @hide 130 */ 131 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 132 133 /** 134 * Result for IActivityManager.startActivity: an error where the 135 * requested class is not found. 136 * @hide 137 */ 138 public static final int START_CLASS_NOT_FOUND = -2; 139 140 /** 141 * Result for IActivityManager.startActivity: an error where the 142 * given Intent could not be resolved to an activity. 143 * @hide 144 */ 145 public static final int START_INTENT_NOT_RESOLVED = -1; 146 147 /** 148 * Result for IActivityManaqer.startActivity: the activity was started 149 * successfully as normal. 150 * @hide 151 */ 152 public static final int START_SUCCESS = 0; 153 154 /** 155 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 156 * be executed if it is the recipient, and that is indeed the case. 157 * @hide 158 */ 159 public static final int START_RETURN_INTENT_TO_CALLER = 1; 160 161 /** 162 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 163 * a task was simply brought to the foreground. 164 * @hide 165 */ 166 public static final int START_TASK_TO_FRONT = 2; 167 168 /** 169 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 170 * the given Intent was given to the existing top activity. 171 * @hide 172 */ 173 public static final int START_DELIVERED_TO_TOP = 3; 174 175 /** 176 * Result for IActivityManaqer.startActivity: request was canceled because 177 * app switches are temporarily canceled to ensure the user's last request 178 * (such as pressing home) is performed. 179 * @hide 180 */ 181 public static final int START_SWITCHES_CANCELED = 4; 182 183 /** 184 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 185 * while in Lock Task Mode. 186 * @hide 187 */ 188 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 189 190 /** 191 * Flag for IActivityManaqer.startActivity: do special start mode where 192 * a new activity is launched only if it is needed. 193 * @hide 194 */ 195 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 196 197 /** 198 * Flag for IActivityManaqer.startActivity: launch the app for 199 * debugging. 200 * @hide 201 */ 202 public static final int START_FLAG_DEBUG = 1<<1; 203 204 /** 205 * Flag for IActivityManaqer.startActivity: launch the app for 206 * allocation tracking. 207 * @hide 208 */ 209 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 210 211 /** 212 * Result for IActivityManaqer.broadcastIntent: success! 213 * @hide 214 */ 215 public static final int BROADCAST_SUCCESS = 0; 216 217 /** 218 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 219 * a sticky intent without appropriate permission. 220 * @hide 221 */ 222 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 223 224 /** 225 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 226 * to a stopped user. Fail. 227 * @hide 228 */ 229 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 230 231 /** 232 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 233 * for a sendBroadcast operation. 234 * @hide 235 */ 236 public static final int INTENT_SENDER_BROADCAST = 1; 237 238 /** 239 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 240 * for a startActivity operation. 241 * @hide 242 */ 243 public static final int INTENT_SENDER_ACTIVITY = 2; 244 245 /** 246 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 247 * for an activity result operation. 248 * @hide 249 */ 250 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 251 252 /** 253 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 254 * for a startService operation. 255 * @hide 256 */ 257 public static final int INTENT_SENDER_SERVICE = 4; 258 259 /** @hide User operation call: success! */ 260 public static final int USER_OP_SUCCESS = 0; 261 262 /** @hide User operation call: given user id is not known. */ 263 public static final int USER_OP_UNKNOWN_USER = -1; 264 265 /** @hide User operation call: given user id is the current user, can't be stopped. */ 266 public static final int USER_OP_IS_CURRENT = -2; 267 268 /** @hide User operation call: system user can't be stopped. */ 269 public static final int USER_OP_ERROR_IS_SYSTEM = -3; 270 271 /** @hide User operation call: one of related users cannot be stopped. */ 272 public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; 273 274 /** @hide Process does not exist. */ 275 public static final int PROCESS_STATE_NONEXISTENT = -1; 276 277 /** @hide Process is a persistent system process. */ 278 public static final int PROCESS_STATE_PERSISTENT = 0; 279 280 /** @hide Process is a persistent system process and is doing UI. */ 281 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 282 283 /** @hide Process is hosting the current top activities. Note that this covers 284 * all activities that are visible to the user. */ 285 public static final int PROCESS_STATE_TOP = 2; 286 287 /** @hide Process is hosting a foreground service due to a system binding. */ 288 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 289 290 /** @hide Process is hosting a foreground service. */ 291 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 292 293 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 294 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 295 296 /** @hide Process is important to the user, and something they are aware of. */ 297 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 298 299 /** @hide Process is important to the user, but not something they are aware of. */ 300 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 301 302 /** @hide Process is in the background running a backup/restore operation. */ 303 public static final int PROCESS_STATE_BACKUP = 8; 304 305 /** @hide Process is in the background, but it can't restore its state so we want 306 * to try to avoid killing it. */ 307 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 308 309 /** @hide Process is in the background running a service. Unlike oom_adj, this level 310 * is used for both the normal running in background state and the executing 311 * operations state. */ 312 public static final int PROCESS_STATE_SERVICE = 10; 313 314 /** @hide Process is in the background running a receiver. Note that from the 315 * perspective of oom_adj receivers run at a higher foreground level, but for our 316 * prioritization here that is not necessary and putting them below services means 317 * many fewer changes in some process states as they receive broadcasts. */ 318 public static final int PROCESS_STATE_RECEIVER = 11; 319 320 /** @hide Process is in the background but hosts the home activity. */ 321 public static final int PROCESS_STATE_HOME = 12; 322 323 /** @hide Process is in the background but hosts the last shown activity. */ 324 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 325 326 /** @hide Process is being cached for later use and contains activities. */ 327 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 328 329 /** @hide Process is being cached for later use and is a client of another cached 330 * process that contains activities. */ 331 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 332 333 /** @hide Process is being cached for later use and is empty. */ 334 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 335 336 /** @hide Should this process state be considered a background state? */ 337 public static final boolean isProcStateBackground(int procState) { 338 return procState >= PROCESS_STATE_BACKUP; 339 } 340 341 /** @hide requestType for assist context: only basic information. */ 342 public static final int ASSIST_CONTEXT_BASIC = 0; 343 344 /** @hide requestType for assist context: generate full AssistStructure. */ 345 public static final int ASSIST_CONTEXT_FULL = 1; 346 347 /** @hide Flag for registerUidObserver: report changes in process state. */ 348 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 349 350 /** @hide Flag for registerUidObserver: report uid gone. */ 351 public static final int UID_OBSERVER_GONE = 1<<1; 352 353 /** @hide Flag for registerUidObserver: report uid has become idle. */ 354 public static final int UID_OBSERVER_IDLE = 1<<2; 355 356 /** @hide Flag for registerUidObserver: report uid has become active. */ 357 public static final int UID_OBSERVER_ACTIVE = 1<<3; 358 359 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 360 public static final int APP_START_MODE_NORMAL = 0; 361 362 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 363 public static final int APP_START_MODE_DELAYED = 1; 364 365 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 366 * launches. */ 367 public static final int APP_START_MODE_DISABLED = 2; 368 369 /** 370 * Lock task mode is not active. 371 */ 372 public static final int LOCK_TASK_MODE_NONE = 0; 373 374 /** 375 * Full lock task mode is active. 376 */ 377 public static final int LOCK_TASK_MODE_LOCKED = 1; 378 379 /** 380 * App pinning mode is active. 381 */ 382 public static final int LOCK_TASK_MODE_PINNED = 2; 383 384 Point mAppTaskThumbnailSize; 385 386 /*package*/ ActivityManager(Context context, Handler handler) { 387 mContext = context; 388 mHandler = handler; 389 } 390 391 /** 392 * Screen compatibility mode: the application most always run in 393 * compatibility mode. 394 * @hide 395 */ 396 public static final int COMPAT_MODE_ALWAYS = -1; 397 398 /** 399 * Screen compatibility mode: the application can never run in 400 * compatibility mode. 401 * @hide 402 */ 403 public static final int COMPAT_MODE_NEVER = -2; 404 405 /** 406 * Screen compatibility mode: unknown. 407 * @hide 408 */ 409 public static final int COMPAT_MODE_UNKNOWN = -3; 410 411 /** 412 * Screen compatibility mode: the application currently has compatibility 413 * mode disabled. 414 * @hide 415 */ 416 public static final int COMPAT_MODE_DISABLED = 0; 417 418 /** 419 * Screen compatibility mode: the application currently has compatibility 420 * mode enabled. 421 * @hide 422 */ 423 public static final int COMPAT_MODE_ENABLED = 1; 424 425 /** 426 * Screen compatibility mode: request to toggle the application's 427 * compatibility mode. 428 * @hide 429 */ 430 public static final int COMPAT_MODE_TOGGLE = 2; 431 432 /** @hide */ 433 public static class StackId { 434 /** Invalid stack ID. */ 435 public static final int INVALID_STACK_ID = -1; 436 437 /** First static stack ID. */ 438 public static final int FIRST_STATIC_STACK_ID = 0; 439 440 /** Home activity stack ID. */ 441 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 442 443 /** ID of stack where fullscreen activities are normally launched into. */ 444 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 445 446 /** ID of stack where freeform/resized activities are normally launched into. */ 447 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 448 449 /** ID of stack that occupies a dedicated region of the screen. */ 450 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 451 452 /** ID of stack that always on top (always visible) when it exist. */ 453 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 454 455 /** Last static stack stack ID. */ 456 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 457 458 /** Start of ID range used by stacks that are created dynamically. */ 459 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 460 461 public static boolean isStaticStack(int stackId) { 462 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 463 } 464 465 /** 466 * Returns true if the activities contained in the input stack display a shadow around 467 * their border. 468 */ 469 public static boolean hasWindowShadow(int stackId) { 470 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 471 } 472 473 /** 474 * Returns true if the activities contained in the input stack display a decor view. 475 */ 476 public static boolean hasWindowDecor(int stackId) { 477 return stackId == FREEFORM_WORKSPACE_STACK_ID; 478 } 479 480 /** 481 * Returns true if the tasks contained in the stack can be resized independently of the 482 * stack. 483 */ 484 public static boolean isTaskResizeAllowed(int stackId) { 485 return stackId == FREEFORM_WORKSPACE_STACK_ID; 486 } 487 488 /** 489 * Returns true if the task bounds should persist across power cycles. 490 */ 491 public static boolean persistTaskBounds(int stackId) { 492 return isStaticStack(stackId) && 493 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 494 } 495 496 /** 497 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 498 */ 499 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 500 return stackId == PINNED_STACK_ID; 501 } 502 503 /** 504 * Returns true if we try to maintain focus in the current stack when the top activity 505 * finishes. 506 */ 507 public static boolean keepFocusInStackIfPossible(int stackId) { 508 return stackId == FREEFORM_WORKSPACE_STACK_ID 509 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 510 } 511 512 /** 513 * Returns true if Stack size is affected by the docked stack changing size. 514 */ 515 public static boolean isResizeableByDockedStack(int stackId) { 516 return isStaticStack(stackId) && 517 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 518 } 519 520 /** 521 * Returns true if the size of tasks in the input stack are affected by the docked stack 522 * changing size. 523 */ 524 public static boolean isTaskResizeableByDockedStack(int stackId) { 525 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 526 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 527 } 528 529 /** 530 * Returns true if the windows of tasks being moved to this stack should be preserved so 531 * there isn't a display gap. 532 */ 533 public static boolean preserveWindowOnTaskMove(int stackId) { 534 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 535 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 536 } 537 538 /** 539 * Returns true if animation specs should be constructed for app transition that moves 540 * the task to the specified stack. 541 */ 542 public static boolean useAnimationSpecForAppTransition(int stackId) { 543 return stackId == FREEFORM_WORKSPACE_STACK_ID 544 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 545 } 546 547 /** Returns true if the windows in the stack can receive input keys. */ 548 public static boolean canReceiveKeys(int stackId) { 549 return stackId != PINNED_STACK_ID; 550 } 551 552 /** 553 * Returns true if the stack can be visible above lockscreen. 554 */ 555 public static boolean isAllowedOverLockscreen(int stackId) { 556 return stackId == HOME_STACK_ID || stackId == FULLSCREEN_WORKSPACE_STACK_ID; 557 } 558 559 public static boolean isAlwaysOnTop(int stackId) { 560 return stackId == PINNED_STACK_ID; 561 } 562 } 563 564 /** 565 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 566 * specifies the position of the created docked stack at the top half of the screen if 567 * in portrait mode or at the left half of the screen if in landscape mode. 568 * @hide 569 */ 570 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 571 572 /** 573 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 574 * specifies the position of the created docked stack at the bottom half of the screen if 575 * in portrait mode or at the right half of the screen if in landscape mode. 576 * @hide 577 */ 578 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 579 580 /** 581 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 582 * that the resize doesn't need to preserve the window, and can be skipped if bounds 583 * is unchanged. This mode is used by window manager in most cases. 584 * @hide 585 */ 586 public static final int RESIZE_MODE_SYSTEM = 0; 587 588 /** 589 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 590 * that the resize should preserve the window if possible. 591 * @hide 592 */ 593 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 594 595 /** 596 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 597 * that the resize should be performed even if the bounds appears unchanged. 598 * @hide 599 */ 600 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 601 602 /** 603 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 604 * manager during a screen rotation. 605 * @hide 606 */ 607 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 608 609 /** 610 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 611 * resize is due to a drag action. 612 * @hide 613 */ 614 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 615 616 /** 617 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 618 * that the resize should preserve the window if possible, and should not be skipped 619 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 620 * is ending. 621 * @hide 622 */ 623 public static final int RESIZE_MODE_USER_FORCED = 624 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 625 626 /** @hide */ 627 public int getFrontActivityScreenCompatMode() { 628 try { 629 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 630 } catch (RemoteException e) { 631 // System dead, we will be dead too soon! 632 return 0; 633 } 634 } 635 636 /** @hide */ 637 public void setFrontActivityScreenCompatMode(int mode) { 638 try { 639 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 640 } catch (RemoteException e) { 641 // System dead, we will be dead too soon! 642 } 643 } 644 645 /** @hide */ 646 public int getPackageScreenCompatMode(String packageName) { 647 try { 648 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 649 } catch (RemoteException e) { 650 // System dead, we will be dead too soon! 651 return 0; 652 } 653 } 654 655 /** @hide */ 656 public void setPackageScreenCompatMode(String packageName, int mode) { 657 try { 658 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 659 } catch (RemoteException e) { 660 // System dead, we will be dead too soon! 661 } 662 } 663 664 /** @hide */ 665 public boolean getPackageAskScreenCompat(String packageName) { 666 try { 667 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 668 } catch (RemoteException e) { 669 // System dead, we will be dead too soon! 670 return false; 671 } 672 } 673 674 /** @hide */ 675 public void setPackageAskScreenCompat(String packageName, boolean ask) { 676 try { 677 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 678 } catch (RemoteException e) { 679 // System dead, we will be dead too soon! 680 } 681 } 682 683 /** 684 * Return the approximate per-application memory class of the current 685 * device. This gives you an idea of how hard a memory limit you should 686 * impose on your application to let the overall system work best. The 687 * returned value is in megabytes; the baseline Android memory class is 688 * 16 (which happens to be the Java heap limit of those devices); some 689 * device with more memory may return 24 or even higher numbers. 690 */ 691 public int getMemoryClass() { 692 return staticGetMemoryClass(); 693 } 694 695 /** @hide */ 696 static public int staticGetMemoryClass() { 697 // Really brain dead right now -- just take this from the configured 698 // vm heap size, and assume it is in megabytes and thus ends with "m". 699 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 700 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 701 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 702 } 703 return staticGetLargeMemoryClass(); 704 } 705 706 /** 707 * Return the approximate per-application memory class of the current 708 * device when an application is running with a large heap. This is the 709 * space available for memory-intensive applications; most applications 710 * should not need this amount of memory, and should instead stay with the 711 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 712 * This may be the same size as {@link #getMemoryClass()} on memory 713 * constrained devices, or it may be significantly larger on devices with 714 * a large amount of available RAM. 715 * 716 * <p>The is the size of the application's Dalvik heap if it has 717 * specified <code>android:largeHeap="true"</code> in its manifest. 718 */ 719 public int getLargeMemoryClass() { 720 return staticGetLargeMemoryClass(); 721 } 722 723 /** @hide */ 724 static public int staticGetLargeMemoryClass() { 725 // Really brain dead right now -- just take this from the configured 726 // vm heap size, and assume it is in megabytes and thus ends with "m". 727 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 728 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 729 } 730 731 /** 732 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 733 * is ultimately up to the device configuration, but currently it generally means 734 * something in the class of a 512MB device with about a 800x480 or less screen. 735 * This is mostly intended to be used by apps to determine whether they should turn 736 * off certain features that require more RAM. 737 */ 738 public boolean isLowRamDevice() { 739 return isLowRamDeviceStatic(); 740 } 741 742 /** @hide */ 743 public static boolean isLowRamDeviceStatic() { 744 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 745 } 746 747 /** 748 * Used by persistent processes to determine if they are running on a 749 * higher-end device so should be okay using hardware drawing acceleration 750 * (which tends to consume a lot more RAM). 751 * @hide 752 */ 753 static public boolean isHighEndGfx() { 754 return !isLowRamDeviceStatic() && 755 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 756 } 757 758 /** 759 * Return the maximum number of recents entries that we will maintain and show. 760 * @hide 761 */ 762 static public int getMaxRecentTasksStatic() { 763 if (gMaxRecentTasks < 0) { 764 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 765 } 766 return gMaxRecentTasks; 767 } 768 769 /** 770 * Return the default limit on the number of recents that an app can make. 771 * @hide 772 */ 773 static public int getDefaultAppRecentsLimitStatic() { 774 return getMaxRecentTasksStatic() / 6; 775 } 776 777 /** 778 * Return the maximum limit on the number of recents that an app can make. 779 * @hide 780 */ 781 static public int getMaxAppRecentsLimitStatic() { 782 return getMaxRecentTasksStatic() / 2; 783 } 784 785 /** 786 * Information you can set and retrieve about the current activity within the recent task list. 787 */ 788 public static class TaskDescription implements Parcelable { 789 /** @hide */ 790 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 791 private static final String ATTR_TASKDESCRIPTIONLABEL = 792 ATTR_TASKDESCRIPTION_PREFIX + "label"; 793 private static final String ATTR_TASKDESCRIPTIONCOLOR = 794 ATTR_TASKDESCRIPTION_PREFIX + "color"; 795 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 796 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 797 798 private String mLabel; 799 private Bitmap mIcon; 800 private String mIconFilename; 801 private int mColorPrimary; 802 803 /** 804 * Creates the TaskDescription to the specified values. 805 * 806 * @param label A label and description of the current state of this task. 807 * @param icon An icon that represents the current state of this task. 808 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 809 */ 810 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 811 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 812 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 813 } 814 815 mLabel = label; 816 mIcon = icon; 817 mColorPrimary = colorPrimary; 818 } 819 820 /** @hide */ 821 public TaskDescription(String label, int colorPrimary, String iconFilename) { 822 this(label, null, colorPrimary); 823 mIconFilename = iconFilename; 824 } 825 826 /** 827 * Creates the TaskDescription to the specified values. 828 * 829 * @param label A label and description of the current state of this activity. 830 * @param icon An icon that represents the current state of this activity. 831 */ 832 public TaskDescription(String label, Bitmap icon) { 833 this(label, icon, 0); 834 } 835 836 /** 837 * Creates the TaskDescription to the specified values. 838 * 839 * @param label A label and description of the current state of this activity. 840 */ 841 public TaskDescription(String label) { 842 this(label, null, 0); 843 } 844 845 /** 846 * Creates an empty TaskDescription. 847 */ 848 public TaskDescription() { 849 this(null, null, 0); 850 } 851 852 /** 853 * Creates a copy of another TaskDescription. 854 */ 855 public TaskDescription(TaskDescription td) { 856 mLabel = td.mLabel; 857 mIcon = td.mIcon; 858 mColorPrimary = td.mColorPrimary; 859 mIconFilename = td.mIconFilename; 860 } 861 862 private TaskDescription(Parcel source) { 863 readFromParcel(source); 864 } 865 866 /** 867 * Sets the label for this task description. 868 * @hide 869 */ 870 public void setLabel(String label) { 871 mLabel = label; 872 } 873 874 /** 875 * Sets the primary color for this task description. 876 * @hide 877 */ 878 public void setPrimaryColor(int primaryColor) { 879 // Ensure that the given color is valid 880 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 881 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 882 } 883 mColorPrimary = primaryColor; 884 } 885 886 /** 887 * Sets the icon for this task description. 888 * @hide 889 */ 890 public void setIcon(Bitmap icon) { 891 mIcon = icon; 892 } 893 894 /** 895 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 896 * bitmap. 897 * @hide 898 */ 899 public void setIconFilename(String iconFilename) { 900 mIconFilename = iconFilename; 901 mIcon = null; 902 } 903 904 /** 905 * @return The label and description of the current state of this task. 906 */ 907 public String getLabel() { 908 return mLabel; 909 } 910 911 /** 912 * @return The icon that represents the current state of this task. 913 */ 914 public Bitmap getIcon() { 915 if (mIcon != null) { 916 return mIcon; 917 } 918 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 919 } 920 921 /** @hide */ 922 public String getIconFilename() { 923 return mIconFilename; 924 } 925 926 /** @hide */ 927 public Bitmap getInMemoryIcon() { 928 return mIcon; 929 } 930 931 /** @hide */ 932 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 933 if (iconFilename != null) { 934 try { 935 return ActivityManagerNative.getDefault(). 936 getTaskDescriptionIcon(iconFilename, userId); 937 } catch (RemoteException e) { 938 } 939 } 940 return null; 941 } 942 943 /** 944 * @return The color override on the theme's primary color. 945 */ 946 public int getPrimaryColor() { 947 return mColorPrimary; 948 } 949 950 /** @hide */ 951 public void saveToXml(XmlSerializer out) throws IOException { 952 if (mLabel != null) { 953 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 954 } 955 if (mColorPrimary != 0) { 956 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 957 } 958 if (mIconFilename != null) { 959 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 960 } 961 } 962 963 /** @hide */ 964 public void restoreFromXml(String attrName, String attrValue) { 965 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 966 setLabel(attrValue); 967 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 968 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 969 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 970 setIconFilename(attrValue); 971 } 972 } 973 974 @Override 975 public int describeContents() { 976 return 0; 977 } 978 979 @Override 980 public void writeToParcel(Parcel dest, int flags) { 981 if (mLabel == null) { 982 dest.writeInt(0); 983 } else { 984 dest.writeInt(1); 985 dest.writeString(mLabel); 986 } 987 if (mIcon == null) { 988 dest.writeInt(0); 989 } else { 990 dest.writeInt(1); 991 mIcon.writeToParcel(dest, 0); 992 } 993 dest.writeInt(mColorPrimary); 994 if (mIconFilename == null) { 995 dest.writeInt(0); 996 } else { 997 dest.writeInt(1); 998 dest.writeString(mIconFilename); 999 } 1000 } 1001 1002 public void readFromParcel(Parcel source) { 1003 mLabel = source.readInt() > 0 ? source.readString() : null; 1004 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 1005 mColorPrimary = source.readInt(); 1006 mIconFilename = source.readInt() > 0 ? source.readString() : null; 1007 } 1008 1009 public static final Creator<TaskDescription> CREATOR 1010 = new Creator<TaskDescription>() { 1011 public TaskDescription createFromParcel(Parcel source) { 1012 return new TaskDescription(source); 1013 } 1014 public TaskDescription[] newArray(int size) { 1015 return new TaskDescription[size]; 1016 } 1017 }; 1018 1019 @Override 1020 public String toString() { 1021 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1022 " colorPrimary: " + mColorPrimary; 1023 } 1024 } 1025 1026 /** 1027 * Information you can retrieve about tasks that the user has most recently 1028 * started or visited. 1029 */ 1030 public static class RecentTaskInfo implements Parcelable { 1031 /** 1032 * If this task is currently running, this is the identifier for it. 1033 * If it is not running, this will be -1. 1034 */ 1035 public int id; 1036 1037 /** 1038 * The true identifier of this task, valid even if it is not running. 1039 */ 1040 public int persistentId; 1041 1042 /** 1043 * The original Intent used to launch the task. You can use this 1044 * Intent to re-launch the task (if it is no longer running) or bring 1045 * the current task to the front. 1046 */ 1047 public Intent baseIntent; 1048 1049 /** 1050 * If this task was started from an alias, this is the actual 1051 * activity component that was initially started; the component of 1052 * the baseIntent in this case is the name of the actual activity 1053 * implementation that the alias referred to. Otherwise, this is null. 1054 */ 1055 public ComponentName origActivity; 1056 1057 /** 1058 * The actual activity component that started the task. 1059 * @hide 1060 */ 1061 @Nullable 1062 public ComponentName realActivity; 1063 1064 /** 1065 * Description of the task's last state. 1066 */ 1067 public CharSequence description; 1068 1069 /** 1070 * The id of the ActivityStack this Task was on most recently. 1071 * @hide 1072 */ 1073 public int stackId; 1074 1075 /** 1076 * The id of the user the task was running as. 1077 * @hide 1078 */ 1079 public int userId; 1080 1081 /** 1082 * The first time this task was active. 1083 * @hide 1084 */ 1085 public long firstActiveTime; 1086 1087 /** 1088 * The last time this task was active. 1089 * @hide 1090 */ 1091 public long lastActiveTime; 1092 1093 /** 1094 * The recent activity values for the highest activity in the stack to have set the values. 1095 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1096 */ 1097 public TaskDescription taskDescription; 1098 1099 /** 1100 * Task affiliation for grouping with other tasks. 1101 */ 1102 public int affiliatedTaskId; 1103 1104 /** 1105 * Task affiliation color of the source task with the affiliated task id. 1106 * 1107 * @hide 1108 */ 1109 public int affiliatedTaskColor; 1110 1111 /** 1112 * The component launched as the first activity in the task. 1113 * This can be considered the "application" of this task. 1114 */ 1115 public ComponentName baseActivity; 1116 1117 /** 1118 * The activity component at the top of the history stack of the task. 1119 * This is what the user is currently doing. 1120 */ 1121 public ComponentName topActivity; 1122 1123 /** 1124 * Number of activities in this task. 1125 */ 1126 public int numActivities; 1127 1128 /** 1129 * The bounds of the task. 1130 * @hide 1131 */ 1132 public Rect bounds; 1133 1134 public RecentTaskInfo() { 1135 } 1136 1137 @Override 1138 public int describeContents() { 1139 return 0; 1140 } 1141 1142 @Override 1143 public void writeToParcel(Parcel dest, int flags) { 1144 dest.writeInt(id); 1145 dest.writeInt(persistentId); 1146 if (baseIntent != null) { 1147 dest.writeInt(1); 1148 baseIntent.writeToParcel(dest, 0); 1149 } else { 1150 dest.writeInt(0); 1151 } 1152 ComponentName.writeToParcel(origActivity, dest); 1153 ComponentName.writeToParcel(realActivity, dest); 1154 TextUtils.writeToParcel(description, dest, 1155 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1156 if (taskDescription != null) { 1157 dest.writeInt(1); 1158 taskDescription.writeToParcel(dest, 0); 1159 } else { 1160 dest.writeInt(0); 1161 } 1162 dest.writeInt(stackId); 1163 dest.writeInt(userId); 1164 dest.writeLong(firstActiveTime); 1165 dest.writeLong(lastActiveTime); 1166 dest.writeInt(affiliatedTaskId); 1167 dest.writeInt(affiliatedTaskColor); 1168 ComponentName.writeToParcel(baseActivity, dest); 1169 ComponentName.writeToParcel(topActivity, dest); 1170 dest.writeInt(numActivities); 1171 if (bounds != null) { 1172 dest.writeInt(1); 1173 bounds.writeToParcel(dest, 0); 1174 } else { 1175 dest.writeInt(0); 1176 } 1177 } 1178 1179 public void readFromParcel(Parcel source) { 1180 id = source.readInt(); 1181 persistentId = source.readInt(); 1182 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1183 origActivity = ComponentName.readFromParcel(source); 1184 realActivity = ComponentName.readFromParcel(source); 1185 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1186 taskDescription = source.readInt() > 0 ? 1187 TaskDescription.CREATOR.createFromParcel(source) : null; 1188 stackId = source.readInt(); 1189 userId = source.readInt(); 1190 firstActiveTime = source.readLong(); 1191 lastActiveTime = source.readLong(); 1192 affiliatedTaskId = source.readInt(); 1193 affiliatedTaskColor = source.readInt(); 1194 baseActivity = ComponentName.readFromParcel(source); 1195 topActivity = ComponentName.readFromParcel(source); 1196 numActivities = source.readInt(); 1197 bounds = source.readInt() > 0 ? 1198 Rect.CREATOR.createFromParcel(source) : null; 1199 } 1200 1201 public static final Creator<RecentTaskInfo> CREATOR 1202 = new Creator<RecentTaskInfo>() { 1203 public RecentTaskInfo createFromParcel(Parcel source) { 1204 return new RecentTaskInfo(source); 1205 } 1206 public RecentTaskInfo[] newArray(int size) { 1207 return new RecentTaskInfo[size]; 1208 } 1209 }; 1210 1211 private RecentTaskInfo(Parcel source) { 1212 readFromParcel(source); 1213 } 1214 } 1215 1216 /** 1217 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1218 * that have set their 1219 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1220 */ 1221 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1222 1223 /** 1224 * Provides a list that does not contain any 1225 * recent tasks that currently are not available to the user. 1226 */ 1227 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1228 1229 /** 1230 * Provides a list that contains recent tasks for all 1231 * profiles of a user. 1232 * @hide 1233 */ 1234 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1235 1236 /** 1237 * Ignores all tasks that are on the home stack. 1238 * @hide 1239 */ 1240 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1241 1242 /** 1243 * <p></p>Return a list of the tasks that the user has recently launched, with 1244 * the most recent being first and older ones after in order. 1245 * 1246 * <p><b>Note: this method is only intended for debugging and presenting 1247 * task management user interfaces</b>. This should never be used for 1248 * core logic in an application, such as deciding between different 1249 * behaviors based on the information found here. Such uses are 1250 * <em>not</em> supported, and will likely break in the future. For 1251 * example, if multiple applications can be actively running at the 1252 * same time, assumptions made about the meaning of the data here for 1253 * purposes of control flow will be incorrect.</p> 1254 * 1255 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1256 * no longer available to third party applications: the introduction of 1257 * document-centric recents means 1258 * it can leak personal information to the caller. For backwards compatibility, 1259 * it will still return a small subset of its data: at least the caller's 1260 * own tasks (though see {@link #getAppTasks()} for the correct supported 1261 * way to retrieve that information), and possibly some other tasks 1262 * such as home that are known to not be sensitive. 1263 * 1264 * @param maxNum The maximum number of entries to return in the list. The 1265 * actual number returned may be smaller, depending on how many tasks the 1266 * user has started and the maximum number the system can remember. 1267 * @param flags Information about what to return. May be any combination 1268 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1269 * 1270 * @return Returns a list of RecentTaskInfo records describing each of 1271 * the recent tasks. 1272 */ 1273 @Deprecated 1274 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1275 throws SecurityException { 1276 try { 1277 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1278 flags, UserHandle.myUserId()); 1279 } catch (RemoteException e) { 1280 // System dead, we will be dead too soon! 1281 return null; 1282 } 1283 } 1284 1285 /** 1286 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1287 * specific user. It requires holding 1288 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1289 * @param maxNum The maximum number of entries to return in the list. The 1290 * actual number returned may be smaller, depending on how many tasks the 1291 * user has started and the maximum number the system can remember. 1292 * @param flags Information about what to return. May be any combination 1293 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1294 * 1295 * @return Returns a list of RecentTaskInfo records describing each of 1296 * the recent tasks. Most recently activated tasks go first. 1297 * 1298 * @hide 1299 */ 1300 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1301 throws SecurityException { 1302 try { 1303 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1304 flags, userId); 1305 } catch (RemoteException e) { 1306 // System dead, we will be dead too soon! 1307 return null; 1308 } 1309 } 1310 1311 /** 1312 * Information you can retrieve about a particular task that is currently 1313 * "running" in the system. Note that a running task does not mean the 1314 * given task actually has a process it is actively running in; it simply 1315 * means that the user has gone to it and never closed it, but currently 1316 * the system may have killed its process and is only holding on to its 1317 * last state in order to restart it when the user returns. 1318 */ 1319 public static class RunningTaskInfo implements Parcelable { 1320 /** 1321 * A unique identifier for this task. 1322 */ 1323 public int id; 1324 1325 /** 1326 * The stack that currently contains this task. 1327 * @hide 1328 */ 1329 public int stackId; 1330 1331 /** 1332 * The component launched as the first activity in the task. This can 1333 * be considered the "application" of this task. 1334 */ 1335 public ComponentName baseActivity; 1336 1337 /** 1338 * The activity component at the top of the history stack of the task. 1339 * This is what the user is currently doing. 1340 */ 1341 public ComponentName topActivity; 1342 1343 /** 1344 * Thumbnail representation of the task's current state. Currently 1345 * always null. 1346 */ 1347 public Bitmap thumbnail; 1348 1349 /** 1350 * Description of the task's current state. 1351 */ 1352 public CharSequence description; 1353 1354 /** 1355 * Number of activities in this task. 1356 */ 1357 public int numActivities; 1358 1359 /** 1360 * Number of activities that are currently running (not stopped 1361 * and persisted) in this task. 1362 */ 1363 public int numRunning; 1364 1365 /** 1366 * Last time task was run. For sorting. 1367 * @hide 1368 */ 1369 public long lastActiveTime; 1370 1371 public RunningTaskInfo() { 1372 } 1373 1374 public int describeContents() { 1375 return 0; 1376 } 1377 1378 public void writeToParcel(Parcel dest, int flags) { 1379 dest.writeInt(id); 1380 dest.writeInt(stackId); 1381 ComponentName.writeToParcel(baseActivity, dest); 1382 ComponentName.writeToParcel(topActivity, dest); 1383 if (thumbnail != null) { 1384 dest.writeInt(1); 1385 thumbnail.writeToParcel(dest, 0); 1386 } else { 1387 dest.writeInt(0); 1388 } 1389 TextUtils.writeToParcel(description, dest, 1390 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1391 dest.writeInt(numActivities); 1392 dest.writeInt(numRunning); 1393 } 1394 1395 public void readFromParcel(Parcel source) { 1396 id = source.readInt(); 1397 stackId = source.readInt(); 1398 baseActivity = ComponentName.readFromParcel(source); 1399 topActivity = ComponentName.readFromParcel(source); 1400 if (source.readInt() != 0) { 1401 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1402 } else { 1403 thumbnail = null; 1404 } 1405 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1406 numActivities = source.readInt(); 1407 numRunning = source.readInt(); 1408 } 1409 1410 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1411 public RunningTaskInfo createFromParcel(Parcel source) { 1412 return new RunningTaskInfo(source); 1413 } 1414 public RunningTaskInfo[] newArray(int size) { 1415 return new RunningTaskInfo[size]; 1416 } 1417 }; 1418 1419 private RunningTaskInfo(Parcel source) { 1420 readFromParcel(source); 1421 } 1422 } 1423 1424 /** 1425 * Get the list of tasks associated with the calling application. 1426 * 1427 * @return The list of tasks associated with the application making this call. 1428 * @throws SecurityException 1429 */ 1430 public List<ActivityManager.AppTask> getAppTasks() { 1431 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1432 List<IAppTask> appTasks; 1433 try { 1434 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1435 } catch (RemoteException e) { 1436 // System dead, we will be dead too soon! 1437 return null; 1438 } 1439 int numAppTasks = appTasks.size(); 1440 for (int i = 0; i < numAppTasks; i++) { 1441 tasks.add(new AppTask(appTasks.get(i))); 1442 } 1443 return tasks; 1444 } 1445 1446 /** 1447 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1448 * with {@link #addAppTask}. 1449 */ 1450 public Size getAppTaskThumbnailSize() { 1451 synchronized (this) { 1452 ensureAppTaskThumbnailSizeLocked(); 1453 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1454 } 1455 } 1456 1457 private void ensureAppTaskThumbnailSizeLocked() { 1458 if (mAppTaskThumbnailSize == null) { 1459 try { 1460 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1461 } catch (RemoteException e) { 1462 throw new IllegalStateException("System dead?", e); 1463 } 1464 } 1465 } 1466 1467 /** 1468 * Add a new {@link AppTask} for the calling application. This will create a new 1469 * recents entry that is added to the <b>end</b> of all existing recents. 1470 * 1471 * @param activity The activity that is adding the entry. This is used to help determine 1472 * the context that the new recents entry will be in. 1473 * @param intent The Intent that describes the recents entry. This is the same Intent that 1474 * you would have used to launch the activity for it. In generally you will want to set 1475 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1476 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1477 * entry will exist without an activity, so it doesn't make sense to not retain it when 1478 * its activity disappears. The given Intent here also must have an explicit ComponentName 1479 * set on it. 1480 * @param description Optional additional description information. 1481 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1482 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1483 * recreated in your process, probably in a way you don't like, before the recents entry 1484 * is added. 1485 * 1486 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1487 * most likely cause of failure is that there is no more room for more tasks for your app. 1488 */ 1489 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1490 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1491 Point size; 1492 synchronized (this) { 1493 ensureAppTaskThumbnailSizeLocked(); 1494 size = mAppTaskThumbnailSize; 1495 } 1496 final int tw = thumbnail.getWidth(); 1497 final int th = thumbnail.getHeight(); 1498 if (tw != size.x || th != size.y) { 1499 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1500 1501 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1502 float scale; 1503 float dx = 0, dy = 0; 1504 if (tw * size.x > size.y * th) { 1505 scale = (float) size.x / (float) th; 1506 dx = (size.y - tw * scale) * 0.5f; 1507 } else { 1508 scale = (float) size.y / (float) tw; 1509 dy = (size.x - th * scale) * 0.5f; 1510 } 1511 Matrix matrix = new Matrix(); 1512 matrix.setScale(scale, scale); 1513 matrix.postTranslate((int) (dx + 0.5f), 0); 1514 1515 Canvas canvas = new Canvas(bm); 1516 canvas.drawBitmap(thumbnail, matrix, null); 1517 canvas.setBitmap(null); 1518 1519 thumbnail = bm; 1520 } 1521 if (description == null) { 1522 description = new TaskDescription(); 1523 } 1524 try { 1525 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1526 intent, description, thumbnail); 1527 } catch (RemoteException e) { 1528 throw new IllegalStateException("System dead?", e); 1529 } 1530 } 1531 1532 /** 1533 * Return a list of the tasks that are currently running, with 1534 * the most recent being first and older ones after in order. Note that 1535 * "running" does not mean any of the task's code is currently loaded or 1536 * activity -- the task may have been frozen by the system, so that it 1537 * can be restarted in its previous state when next brought to the 1538 * foreground. 1539 * 1540 * <p><b>Note: this method is only intended for debugging and presenting 1541 * task management user interfaces</b>. This should never be used for 1542 * core logic in an application, such as deciding between different 1543 * behaviors based on the information found here. Such uses are 1544 * <em>not</em> supported, and will likely break in the future. For 1545 * example, if multiple applications can be actively running at the 1546 * same time, assumptions made about the meaning of the data here for 1547 * purposes of control flow will be incorrect.</p> 1548 * 1549 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1550 * is no longer available to third party 1551 * applications: the introduction of document-centric recents means 1552 * it can leak person information to the caller. For backwards compatibility, 1553 * it will still retu rn a small subset of its data: at least the caller's 1554 * own tasks, and possibly some other tasks 1555 * such as home that are known to not be sensitive. 1556 * 1557 * @param maxNum The maximum number of entries to return in the list. The 1558 * actual number returned may be smaller, depending on how many tasks the 1559 * user has started. 1560 * 1561 * @return Returns a list of RunningTaskInfo records describing each of 1562 * the running tasks. 1563 */ 1564 @Deprecated 1565 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1566 throws SecurityException { 1567 try { 1568 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1569 } catch (RemoteException e) { 1570 // System dead, we will be dead too soon! 1571 return null; 1572 } 1573 } 1574 1575 /** 1576 * Completely remove the given task. 1577 * 1578 * @param taskId Identifier of the task to be removed. 1579 * @return Returns true if the given task was found and removed. 1580 * 1581 * @hide 1582 */ 1583 public boolean removeTask(int taskId) throws SecurityException { 1584 try { 1585 return ActivityManagerNative.getDefault().removeTask(taskId); 1586 } catch (RemoteException e) { 1587 // System dead, we will be dead too soon! 1588 return false; 1589 } 1590 } 1591 1592 /** 1593 * Metadata related to the {@link TaskThumbnail}. 1594 * 1595 * @hide 1596 */ 1597 public static class TaskThumbnailInfo implements Parcelable { 1598 /** @hide */ 1599 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1600 private static final String ATTR_TASK_WIDTH = 1601 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1602 private static final String ATTR_TASK_HEIGHT = 1603 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1604 private static final String ATTR_SCREEN_ORIENTATION = 1605 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1606 1607 public int taskWidth; 1608 public int taskHeight; 1609 public int screenOrientation; 1610 1611 public TaskThumbnailInfo() { 1612 // Do nothing 1613 } 1614 1615 private TaskThumbnailInfo(Parcel source) { 1616 readFromParcel(source); 1617 } 1618 1619 /** 1620 * Resets this info state to the initial state. 1621 * @hide 1622 */ 1623 public void reset() { 1624 taskWidth = 0; 1625 taskHeight = 0; 1626 screenOrientation = 0; 1627 } 1628 1629 /** @hide */ 1630 public void saveToXml(XmlSerializer out) throws IOException { 1631 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1632 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1633 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1634 } 1635 1636 /** @hide */ 1637 public void restoreFromXml(String attrName, String attrValue) { 1638 if (ATTR_TASK_WIDTH.equals(attrName)) { 1639 taskWidth = Integer.parseInt(attrValue); 1640 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1641 taskHeight = Integer.parseInt(attrValue); 1642 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1643 screenOrientation = Integer.parseInt(attrValue); 1644 } 1645 } 1646 1647 public int describeContents() { 1648 return 0; 1649 } 1650 1651 public void writeToParcel(Parcel dest, int flags) { 1652 dest.writeInt(taskWidth); 1653 dest.writeInt(taskHeight); 1654 dest.writeInt(screenOrientation); 1655 } 1656 1657 public void readFromParcel(Parcel source) { 1658 taskWidth = source.readInt(); 1659 taskHeight = source.readInt(); 1660 screenOrientation = source.readInt(); 1661 } 1662 1663 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1664 public TaskThumbnailInfo createFromParcel(Parcel source) { 1665 return new TaskThumbnailInfo(source); 1666 } 1667 public TaskThumbnailInfo[] newArray(int size) { 1668 return new TaskThumbnailInfo[size]; 1669 } 1670 }; 1671 } 1672 1673 /** @hide */ 1674 public static class TaskThumbnail implements Parcelable { 1675 public Bitmap mainThumbnail; 1676 public ParcelFileDescriptor thumbnailFileDescriptor; 1677 public TaskThumbnailInfo thumbnailInfo; 1678 1679 public TaskThumbnail() { 1680 } 1681 1682 private TaskThumbnail(Parcel source) { 1683 readFromParcel(source); 1684 } 1685 1686 public int describeContents() { 1687 if (thumbnailFileDescriptor != null) { 1688 return thumbnailFileDescriptor.describeContents(); 1689 } 1690 return 0; 1691 } 1692 1693 public void writeToParcel(Parcel dest, int flags) { 1694 if (mainThumbnail != null) { 1695 dest.writeInt(1); 1696 mainThumbnail.writeToParcel(dest, flags); 1697 } else { 1698 dest.writeInt(0); 1699 } 1700 if (thumbnailFileDescriptor != null) { 1701 dest.writeInt(1); 1702 thumbnailFileDescriptor.writeToParcel(dest, flags); 1703 } else { 1704 dest.writeInt(0); 1705 } 1706 if (thumbnailInfo != null) { 1707 dest.writeInt(1); 1708 thumbnailInfo.writeToParcel(dest, flags); 1709 } else { 1710 dest.writeInt(0); 1711 } 1712 } 1713 1714 public void readFromParcel(Parcel source) { 1715 if (source.readInt() != 0) { 1716 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1717 } else { 1718 mainThumbnail = null; 1719 } 1720 if (source.readInt() != 0) { 1721 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1722 } else { 1723 thumbnailFileDescriptor = null; 1724 } 1725 if (source.readInt() != 0) { 1726 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1727 } else { 1728 thumbnailInfo = null; 1729 } 1730 } 1731 1732 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1733 public TaskThumbnail createFromParcel(Parcel source) { 1734 return new TaskThumbnail(source); 1735 } 1736 public TaskThumbnail[] newArray(int size) { 1737 return new TaskThumbnail[size]; 1738 } 1739 }; 1740 } 1741 1742 /** @hide */ 1743 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1744 try { 1745 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1746 } catch (RemoteException e) { 1747 // System dead, we will be dead too soon! 1748 return null; 1749 } 1750 } 1751 1752 /** @hide */ 1753 public boolean isInHomeStack(int taskId) { 1754 try { 1755 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1756 } catch (RemoteException e) { 1757 // System dead, we will be dead too soon! 1758 return false; 1759 } 1760 } 1761 1762 /** 1763 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1764 * activity along with the task, so it is positioned immediately behind 1765 * the task. 1766 */ 1767 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1768 1769 /** 1770 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1771 * user-instigated action, so the current activity will not receive a 1772 * hint that the user is leaving. 1773 */ 1774 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1775 1776 /** 1777 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1778 * with a null options argument. 1779 * 1780 * @param taskId The identifier of the task to be moved, as found in 1781 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1782 * @param flags Additional operational flags, 0 or more of 1783 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1784 */ 1785 public void moveTaskToFront(int taskId, int flags) { 1786 moveTaskToFront(taskId, flags, null); 1787 } 1788 1789 /** 1790 * Ask that the task associated with a given task ID be moved to the 1791 * front of the stack, so it is now visible to the user. Requires that 1792 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1793 * or a SecurityException will be thrown. 1794 * 1795 * @param taskId The identifier of the task to be moved, as found in 1796 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1797 * @param flags Additional operational flags, 0 or more of 1798 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1799 * @param options Additional options for the operation, either null or 1800 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1801 * Context.startActivity(Intent, Bundle)}. 1802 */ 1803 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1804 try { 1805 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1806 } catch (RemoteException e) { 1807 // System dead, we will be dead too soon! 1808 } 1809 } 1810 1811 /** 1812 * Information you can retrieve about a particular Service that is 1813 * currently running in the system. 1814 */ 1815 public static class RunningServiceInfo implements Parcelable { 1816 /** 1817 * The service component. 1818 */ 1819 public ComponentName service; 1820 1821 /** 1822 * If non-zero, this is the process the service is running in. 1823 */ 1824 public int pid; 1825 1826 /** 1827 * The UID that owns this service. 1828 */ 1829 public int uid; 1830 1831 /** 1832 * The name of the process this service runs in. 1833 */ 1834 public String process; 1835 1836 /** 1837 * Set to true if the service has asked to run as a foreground process. 1838 */ 1839 public boolean foreground; 1840 1841 /** 1842 * The time when the service was first made active, either by someone 1843 * starting or binding to it. This 1844 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1845 */ 1846 public long activeSince; 1847 1848 /** 1849 * Set to true if this service has been explicitly started. 1850 */ 1851 public boolean started; 1852 1853 /** 1854 * Number of clients connected to the service. 1855 */ 1856 public int clientCount; 1857 1858 /** 1859 * Number of times the service's process has crashed while the service 1860 * is running. 1861 */ 1862 public int crashCount; 1863 1864 /** 1865 * The time when there was last activity in the service (either 1866 * explicit requests to start it or clients binding to it). This 1867 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1868 */ 1869 public long lastActivityTime; 1870 1871 /** 1872 * If non-zero, this service is not currently running, but scheduled to 1873 * restart at the given time. 1874 */ 1875 public long restarting; 1876 1877 /** 1878 * Bit for {@link #flags}: set if this service has been 1879 * explicitly started. 1880 */ 1881 public static final int FLAG_STARTED = 1<<0; 1882 1883 /** 1884 * Bit for {@link #flags}: set if the service has asked to 1885 * run as a foreground process. 1886 */ 1887 public static final int FLAG_FOREGROUND = 1<<1; 1888 1889 /** 1890 * Bit for {@link #flags): set if the service is running in a 1891 * core system process. 1892 */ 1893 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1894 1895 /** 1896 * Bit for {@link #flags): set if the service is running in a 1897 * persistent process. 1898 */ 1899 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1900 1901 /** 1902 * Running flags. 1903 */ 1904 public int flags; 1905 1906 /** 1907 * For special services that are bound to by system code, this is 1908 * the package that holds the binding. 1909 */ 1910 public String clientPackage; 1911 1912 /** 1913 * For special services that are bound to by system code, this is 1914 * a string resource providing a user-visible label for who the 1915 * client is. 1916 */ 1917 public int clientLabel; 1918 1919 public RunningServiceInfo() { 1920 } 1921 1922 public int describeContents() { 1923 return 0; 1924 } 1925 1926 public void writeToParcel(Parcel dest, int flags) { 1927 ComponentName.writeToParcel(service, dest); 1928 dest.writeInt(pid); 1929 dest.writeInt(uid); 1930 dest.writeString(process); 1931 dest.writeInt(foreground ? 1 : 0); 1932 dest.writeLong(activeSince); 1933 dest.writeInt(started ? 1 : 0); 1934 dest.writeInt(clientCount); 1935 dest.writeInt(crashCount); 1936 dest.writeLong(lastActivityTime); 1937 dest.writeLong(restarting); 1938 dest.writeInt(this.flags); 1939 dest.writeString(clientPackage); 1940 dest.writeInt(clientLabel); 1941 } 1942 1943 public void readFromParcel(Parcel source) { 1944 service = ComponentName.readFromParcel(source); 1945 pid = source.readInt(); 1946 uid = source.readInt(); 1947 process = source.readString(); 1948 foreground = source.readInt() != 0; 1949 activeSince = source.readLong(); 1950 started = source.readInt() != 0; 1951 clientCount = source.readInt(); 1952 crashCount = source.readInt(); 1953 lastActivityTime = source.readLong(); 1954 restarting = source.readLong(); 1955 flags = source.readInt(); 1956 clientPackage = source.readString(); 1957 clientLabel = source.readInt(); 1958 } 1959 1960 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1961 public RunningServiceInfo createFromParcel(Parcel source) { 1962 return new RunningServiceInfo(source); 1963 } 1964 public RunningServiceInfo[] newArray(int size) { 1965 return new RunningServiceInfo[size]; 1966 } 1967 }; 1968 1969 private RunningServiceInfo(Parcel source) { 1970 readFromParcel(source); 1971 } 1972 } 1973 1974 /** 1975 * Return a list of the services that are currently running. 1976 * 1977 * <p><b>Note: this method is only intended for debugging or implementing 1978 * service management type user interfaces.</b></p> 1979 * 1980 * @param maxNum The maximum number of entries to return in the list. The 1981 * actual number returned may be smaller, depending on how many services 1982 * are running. 1983 * 1984 * @return Returns a list of RunningServiceInfo records describing each of 1985 * the running tasks. 1986 */ 1987 public List<RunningServiceInfo> getRunningServices(int maxNum) 1988 throws SecurityException { 1989 try { 1990 return ActivityManagerNative.getDefault() 1991 .getServices(maxNum, 0); 1992 } catch (RemoteException e) { 1993 // System dead, we will be dead too soon! 1994 return null; 1995 } 1996 } 1997 1998 /** 1999 * Returns a PendingIntent you can start to show a control panel for the 2000 * given running service. If the service does not have a control panel, 2001 * null is returned. 2002 */ 2003 public PendingIntent getRunningServiceControlPanel(ComponentName service) 2004 throws SecurityException { 2005 try { 2006 return ActivityManagerNative.getDefault() 2007 .getRunningServiceControlPanel(service); 2008 } catch (RemoteException e) { 2009 // System dead, we will be dead too soon! 2010 return null; 2011 } 2012 } 2013 2014 /** 2015 * Information you can retrieve about the available memory through 2016 * {@link ActivityManager#getMemoryInfo}. 2017 */ 2018 public static class MemoryInfo implements Parcelable { 2019 /** 2020 * The available memory on the system. This number should not 2021 * be considered absolute: due to the nature of the kernel, a significant 2022 * portion of this memory is actually in use and needed for the overall 2023 * system to run well. 2024 */ 2025 public long availMem; 2026 2027 /** 2028 * The total memory accessible by the kernel. This is basically the 2029 * RAM size of the device, not including below-kernel fixed allocations 2030 * like DMA buffers, RAM for the baseband CPU, etc. 2031 */ 2032 public long totalMem; 2033 2034 /** 2035 * The threshold of {@link #availMem} at which we consider memory to be 2036 * low and start killing background services and other non-extraneous 2037 * processes. 2038 */ 2039 public long threshold; 2040 2041 /** 2042 * Set to true if the system considers itself to currently be in a low 2043 * memory situation. 2044 */ 2045 public boolean lowMemory; 2046 2047 /** @hide */ 2048 public long hiddenAppThreshold; 2049 /** @hide */ 2050 public long secondaryServerThreshold; 2051 /** @hide */ 2052 public long visibleAppThreshold; 2053 /** @hide */ 2054 public long foregroundAppThreshold; 2055 2056 public MemoryInfo() { 2057 } 2058 2059 public int describeContents() { 2060 return 0; 2061 } 2062 2063 public void writeToParcel(Parcel dest, int flags) { 2064 dest.writeLong(availMem); 2065 dest.writeLong(totalMem); 2066 dest.writeLong(threshold); 2067 dest.writeInt(lowMemory ? 1 : 0); 2068 dest.writeLong(hiddenAppThreshold); 2069 dest.writeLong(secondaryServerThreshold); 2070 dest.writeLong(visibleAppThreshold); 2071 dest.writeLong(foregroundAppThreshold); 2072 } 2073 2074 public void readFromParcel(Parcel source) { 2075 availMem = source.readLong(); 2076 totalMem = source.readLong(); 2077 threshold = source.readLong(); 2078 lowMemory = source.readInt() != 0; 2079 hiddenAppThreshold = source.readLong(); 2080 secondaryServerThreshold = source.readLong(); 2081 visibleAppThreshold = source.readLong(); 2082 foregroundAppThreshold = source.readLong(); 2083 } 2084 2085 public static final Creator<MemoryInfo> CREATOR 2086 = new Creator<MemoryInfo>() { 2087 public MemoryInfo createFromParcel(Parcel source) { 2088 return new MemoryInfo(source); 2089 } 2090 public MemoryInfo[] newArray(int size) { 2091 return new MemoryInfo[size]; 2092 } 2093 }; 2094 2095 private MemoryInfo(Parcel source) { 2096 readFromParcel(source); 2097 } 2098 } 2099 2100 /** 2101 * Return general information about the memory state of the system. This 2102 * can be used to help decide how to manage your own memory, though note 2103 * that polling is not recommended and 2104 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2105 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2106 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2107 * level of your process as needed, which gives a better hint for how to 2108 * manage its memory. 2109 */ 2110 public void getMemoryInfo(MemoryInfo outInfo) { 2111 try { 2112 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2113 } catch (RemoteException e) { 2114 } 2115 } 2116 2117 /** 2118 * Information you can retrieve about an ActivityStack in the system. 2119 * @hide 2120 */ 2121 public static class StackInfo implements Parcelable { 2122 public int stackId; 2123 public Rect bounds = new Rect(); 2124 public int[] taskIds; 2125 public String[] taskNames; 2126 public Rect[] taskBounds; 2127 public int[] taskUserIds; 2128 public int displayId; 2129 public int userId; 2130 2131 @Override 2132 public int describeContents() { 2133 return 0; 2134 } 2135 2136 @Override 2137 public void writeToParcel(Parcel dest, int flags) { 2138 dest.writeInt(stackId); 2139 dest.writeInt(bounds.left); 2140 dest.writeInt(bounds.top); 2141 dest.writeInt(bounds.right); 2142 dest.writeInt(bounds.bottom); 2143 dest.writeIntArray(taskIds); 2144 dest.writeStringArray(taskNames); 2145 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2146 dest.writeInt(boundsCount); 2147 for (int i = 0; i < boundsCount; i++) { 2148 dest.writeInt(taskBounds[i].left); 2149 dest.writeInt(taskBounds[i].top); 2150 dest.writeInt(taskBounds[i].right); 2151 dest.writeInt(taskBounds[i].bottom); 2152 } 2153 dest.writeIntArray(taskUserIds); 2154 dest.writeInt(displayId); 2155 dest.writeInt(userId); 2156 } 2157 2158 public void readFromParcel(Parcel source) { 2159 stackId = source.readInt(); 2160 bounds = new Rect( 2161 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2162 taskIds = source.createIntArray(); 2163 taskNames = source.createStringArray(); 2164 final int boundsCount = source.readInt(); 2165 if (boundsCount > 0) { 2166 taskBounds = new Rect[boundsCount]; 2167 for (int i = 0; i < boundsCount; i++) { 2168 taskBounds[i] = new Rect(); 2169 taskBounds[i].set( 2170 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2171 } 2172 } else { 2173 taskBounds = null; 2174 } 2175 taskUserIds = source.createIntArray(); 2176 displayId = source.readInt(); 2177 userId = source.readInt(); 2178 } 2179 2180 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2181 @Override 2182 public StackInfo createFromParcel(Parcel source) { 2183 return new StackInfo(source); 2184 } 2185 @Override 2186 public StackInfo[] newArray(int size) { 2187 return new StackInfo[size]; 2188 } 2189 }; 2190 2191 public StackInfo() { 2192 } 2193 2194 private StackInfo(Parcel source) { 2195 readFromParcel(source); 2196 } 2197 2198 public String toString(String prefix) { 2199 StringBuilder sb = new StringBuilder(256); 2200 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2201 sb.append(" bounds="); sb.append(bounds.toShortString()); 2202 sb.append(" displayId="); sb.append(displayId); 2203 sb.append(" userId="); sb.append(userId); 2204 sb.append("\n"); 2205 prefix = prefix + " "; 2206 for (int i = 0; i < taskIds.length; ++i) { 2207 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2208 sb.append(": "); sb.append(taskNames[i]); 2209 if (taskBounds != null) { 2210 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2211 } 2212 sb.append(" userId=").append(taskUserIds[i]); 2213 sb.append("\n"); 2214 } 2215 return sb.toString(); 2216 } 2217 2218 @Override 2219 public String toString() { 2220 return toString(""); 2221 } 2222 } 2223 2224 /** 2225 * @hide 2226 */ 2227 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2228 try { 2229 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2230 observer, UserHandle.myUserId()); 2231 } catch (RemoteException e) { 2232 return false; 2233 } 2234 } 2235 2236 /** 2237 * Permits an application to erase its own data from disk. This is equivalent to 2238 * the user choosing to clear the app's data from within the device settings UI. It 2239 * erases all dynamic data associated with the app -- its private data and data in its 2240 * private area on external storage -- but does not remove the installed application 2241 * itself, nor any OBB files. 2242 * 2243 * @return {@code true} if the application successfully requested that the application's 2244 * data be erased; {@code false} otherwise. 2245 */ 2246 public boolean clearApplicationUserData() { 2247 return clearApplicationUserData(mContext.getPackageName(), null); 2248 } 2249 2250 /** 2251 * Information you can retrieve about any processes that are in an error condition. 2252 */ 2253 public static class ProcessErrorStateInfo implements Parcelable { 2254 /** 2255 * Condition codes 2256 */ 2257 public static final int NO_ERROR = 0; 2258 public static final int CRASHED = 1; 2259 public static final int NOT_RESPONDING = 2; 2260 2261 /** 2262 * The condition that the process is in. 2263 */ 2264 public int condition; 2265 2266 /** 2267 * The process name in which the crash or error occurred. 2268 */ 2269 public String processName; 2270 2271 /** 2272 * The pid of this process; 0 if none 2273 */ 2274 public int pid; 2275 2276 /** 2277 * The kernel user-ID that has been assigned to this process; 2278 * currently this is not a unique ID (multiple applications can have 2279 * the same uid). 2280 */ 2281 public int uid; 2282 2283 /** 2284 * The activity name associated with the error, if known. May be null. 2285 */ 2286 public String tag; 2287 2288 /** 2289 * A short message describing the error condition. 2290 */ 2291 public String shortMsg; 2292 2293 /** 2294 * A long message describing the error condition. 2295 */ 2296 public String longMsg; 2297 2298 /** 2299 * The stack trace where the error originated. May be null. 2300 */ 2301 public String stackTrace; 2302 2303 /** 2304 * to be deprecated: This value will always be null. 2305 */ 2306 public byte[] crashData = null; 2307 2308 public ProcessErrorStateInfo() { 2309 } 2310 2311 @Override 2312 public int describeContents() { 2313 return 0; 2314 } 2315 2316 @Override 2317 public void writeToParcel(Parcel dest, int flags) { 2318 dest.writeInt(condition); 2319 dest.writeString(processName); 2320 dest.writeInt(pid); 2321 dest.writeInt(uid); 2322 dest.writeString(tag); 2323 dest.writeString(shortMsg); 2324 dest.writeString(longMsg); 2325 dest.writeString(stackTrace); 2326 } 2327 2328 public void readFromParcel(Parcel source) { 2329 condition = source.readInt(); 2330 processName = source.readString(); 2331 pid = source.readInt(); 2332 uid = source.readInt(); 2333 tag = source.readString(); 2334 shortMsg = source.readString(); 2335 longMsg = source.readString(); 2336 stackTrace = source.readString(); 2337 } 2338 2339 public static final Creator<ProcessErrorStateInfo> CREATOR = 2340 new Creator<ProcessErrorStateInfo>() { 2341 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2342 return new ProcessErrorStateInfo(source); 2343 } 2344 public ProcessErrorStateInfo[] newArray(int size) { 2345 return new ProcessErrorStateInfo[size]; 2346 } 2347 }; 2348 2349 private ProcessErrorStateInfo(Parcel source) { 2350 readFromParcel(source); 2351 } 2352 } 2353 2354 /** 2355 * Returns a list of any processes that are currently in an error condition. The result 2356 * will be null if all processes are running properly at this time. 2357 * 2358 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2359 * current error conditions (it will not return an empty list). This list ordering is not 2360 * specified. 2361 */ 2362 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2363 try { 2364 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2365 } catch (RemoteException e) { 2366 return null; 2367 } 2368 } 2369 2370 /** 2371 * Information you can retrieve about a running process. 2372 */ 2373 public static class RunningAppProcessInfo implements Parcelable { 2374 /** 2375 * The name of the process that this object is associated with 2376 */ 2377 public String processName; 2378 2379 /** 2380 * The pid of this process; 0 if none 2381 */ 2382 public int pid; 2383 2384 /** 2385 * The user id of this process. 2386 */ 2387 public int uid; 2388 2389 /** 2390 * All packages that have been loaded into the process. 2391 */ 2392 public String pkgList[]; 2393 2394 /** 2395 * Constant for {@link #flags}: this is an app that is unable to 2396 * correctly save its state when going to the background, 2397 * so it can not be killed while in the background. 2398 * @hide 2399 */ 2400 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2401 2402 /** 2403 * Constant for {@link #flags}: this process is associated with a 2404 * persistent system app. 2405 * @hide 2406 */ 2407 public static final int FLAG_PERSISTENT = 1<<1; 2408 2409 /** 2410 * Constant for {@link #flags}: this process is associated with a 2411 * persistent system app. 2412 * @hide 2413 */ 2414 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2415 2416 /** 2417 * Flags of information. May be any of 2418 * {@link #FLAG_CANT_SAVE_STATE}. 2419 * @hide 2420 */ 2421 public int flags; 2422 2423 /** 2424 * Last memory trim level reported to the process: corresponds to 2425 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2426 * ComponentCallbacks2.onTrimMemory(int)}. 2427 */ 2428 public int lastTrimLevel; 2429 2430 /** 2431 * Constant for {@link #importance}: This process is running the 2432 * foreground UI; that is, it is the thing currently at the top of the screen 2433 * that the user is interacting with. 2434 */ 2435 public static final int IMPORTANCE_FOREGROUND = 100; 2436 2437 /** 2438 * Constant for {@link #importance}: This process is running a foreground 2439 * service, for example to perform music playback even while the user is 2440 * not immediately in the app. This generally indicates that the process 2441 * is doing something the user actively cares about. 2442 */ 2443 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2444 2445 /** 2446 * Constant for {@link #importance}: This process is running the foreground 2447 * UI, but the device is asleep so it is not visible to the user. This means 2448 * the user is not really aware of the process, because they can not see or 2449 * interact with it, but it is quite important because it what they expect to 2450 * return to once unlocking the device. 2451 */ 2452 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2453 2454 /** 2455 * Constant for {@link #importance}: This process is running something 2456 * that is actively visible to the user, though not in the immediate 2457 * foreground. This may be running a window that is behind the current 2458 * foreground (so paused and with its state saved, not interacting with 2459 * the user, but visible to them to some degree); it may also be running 2460 * other services under the system's control that it inconsiders important. 2461 */ 2462 public static final int IMPORTANCE_VISIBLE = 200; 2463 2464 /** 2465 * Constant for {@link #importance}: This process is not something the user 2466 * is directly aware of, but is otherwise perceptable to them to some degree. 2467 */ 2468 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2469 2470 /** 2471 * Constant for {@link #importance}: This process is running an 2472 * application that can not save its state, and thus can't be killed 2473 * while in the background. 2474 * @hide 2475 */ 2476 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2477 2478 /** 2479 * Constant for {@link #importance}: This process is contains services 2480 * that should remain running. These are background services apps have 2481 * started, not something the user is aware of, so they may be killed by 2482 * the system relatively freely (though it is generally desired that they 2483 * stay running as long as they want to). 2484 */ 2485 public static final int IMPORTANCE_SERVICE = 300; 2486 2487 /** 2488 * Constant for {@link #importance}: This process process contains 2489 * background code that is expendable. 2490 */ 2491 public static final int IMPORTANCE_BACKGROUND = 400; 2492 2493 /** 2494 * Constant for {@link #importance}: This process is empty of any 2495 * actively running code. 2496 */ 2497 public static final int IMPORTANCE_EMPTY = 500; 2498 2499 /** 2500 * Constant for {@link #importance}: This process does not exist. 2501 */ 2502 public static final int IMPORTANCE_GONE = 1000; 2503 2504 /** @hide */ 2505 public static int procStateToImportance(int procState) { 2506 if (procState == PROCESS_STATE_NONEXISTENT) { 2507 return IMPORTANCE_GONE; 2508 } else if (procState >= PROCESS_STATE_HOME) { 2509 return IMPORTANCE_BACKGROUND; 2510 } else if (procState >= PROCESS_STATE_SERVICE) { 2511 return IMPORTANCE_SERVICE; 2512 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2513 return IMPORTANCE_CANT_SAVE_STATE; 2514 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2515 return IMPORTANCE_PERCEPTIBLE; 2516 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2517 return IMPORTANCE_VISIBLE; 2518 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2519 return IMPORTANCE_TOP_SLEEPING; 2520 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2521 return IMPORTANCE_FOREGROUND_SERVICE; 2522 } else { 2523 return IMPORTANCE_FOREGROUND; 2524 } 2525 } 2526 2527 /** 2528 * The relative importance level that the system places on this 2529 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2530 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2531 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2532 * constants are numbered so that "more important" values are always 2533 * smaller than "less important" values. 2534 */ 2535 public int importance; 2536 2537 /** 2538 * An additional ordering within a particular {@link #importance} 2539 * category, providing finer-grained information about the relative 2540 * utility of processes within a category. This number means nothing 2541 * except that a smaller values are more recently used (and thus 2542 * more important). Currently an LRU value is only maintained for 2543 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2544 * be maintained in the future. 2545 */ 2546 public int lru; 2547 2548 /** 2549 * Constant for {@link #importanceReasonCode}: nothing special has 2550 * been specified for the reason for this level. 2551 */ 2552 public static final int REASON_UNKNOWN = 0; 2553 2554 /** 2555 * Constant for {@link #importanceReasonCode}: one of the application's 2556 * content providers is being used by another process. The pid of 2557 * the client process is in {@link #importanceReasonPid} and the 2558 * target provider in this process is in 2559 * {@link #importanceReasonComponent}. 2560 */ 2561 public static final int REASON_PROVIDER_IN_USE = 1; 2562 2563 /** 2564 * Constant for {@link #importanceReasonCode}: one of the application's 2565 * content providers is being used by another process. The pid of 2566 * the client process is in {@link #importanceReasonPid} and the 2567 * target provider in this process is in 2568 * {@link #importanceReasonComponent}. 2569 */ 2570 public static final int REASON_SERVICE_IN_USE = 2; 2571 2572 /** 2573 * The reason for {@link #importance}, if any. 2574 */ 2575 public int importanceReasonCode; 2576 2577 /** 2578 * For the specified values of {@link #importanceReasonCode}, this 2579 * is the process ID of the other process that is a client of this 2580 * process. This will be 0 if no other process is using this one. 2581 */ 2582 public int importanceReasonPid; 2583 2584 /** 2585 * For the specified values of {@link #importanceReasonCode}, this 2586 * is the name of the component that is being used in this process. 2587 */ 2588 public ComponentName importanceReasonComponent; 2589 2590 /** 2591 * When {@link #importanceReasonPid} is non-0, this is the importance 2592 * of the other pid. @hide 2593 */ 2594 public int importanceReasonImportance; 2595 2596 /** 2597 * Current process state, as per PROCESS_STATE_* constants. 2598 * @hide 2599 */ 2600 public int processState; 2601 2602 public RunningAppProcessInfo() { 2603 importance = IMPORTANCE_FOREGROUND; 2604 importanceReasonCode = REASON_UNKNOWN; 2605 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2606 } 2607 2608 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2609 processName = pProcessName; 2610 pid = pPid; 2611 pkgList = pArr; 2612 } 2613 2614 public int describeContents() { 2615 return 0; 2616 } 2617 2618 public void writeToParcel(Parcel dest, int flags) { 2619 dest.writeString(processName); 2620 dest.writeInt(pid); 2621 dest.writeInt(uid); 2622 dest.writeStringArray(pkgList); 2623 dest.writeInt(this.flags); 2624 dest.writeInt(lastTrimLevel); 2625 dest.writeInt(importance); 2626 dest.writeInt(lru); 2627 dest.writeInt(importanceReasonCode); 2628 dest.writeInt(importanceReasonPid); 2629 ComponentName.writeToParcel(importanceReasonComponent, dest); 2630 dest.writeInt(importanceReasonImportance); 2631 dest.writeInt(processState); 2632 } 2633 2634 public void readFromParcel(Parcel source) { 2635 processName = source.readString(); 2636 pid = source.readInt(); 2637 uid = source.readInt(); 2638 pkgList = source.readStringArray(); 2639 flags = source.readInt(); 2640 lastTrimLevel = source.readInt(); 2641 importance = source.readInt(); 2642 lru = source.readInt(); 2643 importanceReasonCode = source.readInt(); 2644 importanceReasonPid = source.readInt(); 2645 importanceReasonComponent = ComponentName.readFromParcel(source); 2646 importanceReasonImportance = source.readInt(); 2647 processState = source.readInt(); 2648 } 2649 2650 public static final Creator<RunningAppProcessInfo> CREATOR = 2651 new Creator<RunningAppProcessInfo>() { 2652 public RunningAppProcessInfo createFromParcel(Parcel source) { 2653 return new RunningAppProcessInfo(source); 2654 } 2655 public RunningAppProcessInfo[] newArray(int size) { 2656 return new RunningAppProcessInfo[size]; 2657 } 2658 }; 2659 2660 private RunningAppProcessInfo(Parcel source) { 2661 readFromParcel(source); 2662 } 2663 } 2664 2665 /** 2666 * Returns a list of application processes installed on external media 2667 * that are running on the device. 2668 * 2669 * <p><b>Note: this method is only intended for debugging or building 2670 * a user-facing process management UI.</b></p> 2671 * 2672 * @return Returns a list of ApplicationInfo records, or null if none 2673 * This list ordering is not specified. 2674 * @hide 2675 */ 2676 public List<ApplicationInfo> getRunningExternalApplications() { 2677 try { 2678 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2679 } catch (RemoteException e) { 2680 return null; 2681 } 2682 } 2683 2684 /** 2685 * Sets the memory trim mode for a process and schedules a memory trim operation. 2686 * 2687 * <p><b>Note: this method is only intended for testing framework.</b></p> 2688 * 2689 * @return Returns true if successful. 2690 * @hide 2691 */ 2692 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2693 try { 2694 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2695 level); 2696 } catch (RemoteException e) { 2697 return false; 2698 } 2699 } 2700 2701 /** 2702 * Returns a list of application processes that are running on the device. 2703 * 2704 * <p><b>Note: this method is only intended for debugging or building 2705 * a user-facing process management UI.</b></p> 2706 * 2707 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2708 * running processes (it will not return an empty list). This list ordering is not 2709 * specified. 2710 */ 2711 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2712 try { 2713 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2714 } catch (RemoteException e) { 2715 return null; 2716 } 2717 } 2718 2719 /** 2720 * Return the importance of a given package name, based on the processes that are 2721 * currently running. The return value is one of the importance constants defined 2722 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2723 * processes that this package has code running inside of. If there are no processes 2724 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2725 * @hide 2726 */ 2727 @SystemApi 2728 public int getPackageImportance(String packageName) { 2729 try { 2730 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2731 mContext.getOpPackageName()); 2732 return RunningAppProcessInfo.procStateToImportance(procState); 2733 } catch (RemoteException e) { 2734 return RunningAppProcessInfo.IMPORTANCE_GONE; 2735 } 2736 } 2737 2738 /** 2739 * Return global memory state information for the calling process. This 2740 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2741 * only fields that will be filled in are 2742 * {@link RunningAppProcessInfo#pid}, 2743 * {@link RunningAppProcessInfo#uid}, 2744 * {@link RunningAppProcessInfo#lastTrimLevel}, 2745 * {@link RunningAppProcessInfo#importance}, 2746 * {@link RunningAppProcessInfo#lru}, and 2747 * {@link RunningAppProcessInfo#importanceReasonCode}. 2748 */ 2749 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2750 try { 2751 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2752 } catch (RemoteException e) { 2753 } 2754 } 2755 2756 /** 2757 * Return information about the memory usage of one or more processes. 2758 * 2759 * <p><b>Note: this method is only intended for debugging or building 2760 * a user-facing process management UI.</b></p> 2761 * 2762 * @param pids The pids of the processes whose memory usage is to be 2763 * retrieved. 2764 * @return Returns an array of memory information, one for each 2765 * requested pid. 2766 */ 2767 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2768 try { 2769 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2770 } catch (RemoteException e) { 2771 return null; 2772 } 2773 } 2774 2775 /** 2776 * @deprecated This is now just a wrapper for 2777 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2778 * is no longer available to applications because it allows them to 2779 * break other applications by removing their alarms, stopping their 2780 * services, etc. 2781 */ 2782 @Deprecated 2783 public void restartPackage(String packageName) { 2784 killBackgroundProcesses(packageName); 2785 } 2786 2787 /** 2788 * Have the system immediately kill all background processes associated 2789 * with the given package. This is the same as the kernel killing those 2790 * processes to reclaim memory; the system will take care of restarting 2791 * these processes in the future as needed. 2792 * 2793 * <p>You must hold the permission 2794 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2795 * call this method. 2796 * 2797 * @param packageName The name of the package whose processes are to 2798 * be killed. 2799 */ 2800 public void killBackgroundProcesses(String packageName) { 2801 try { 2802 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2803 UserHandle.myUserId()); 2804 } catch (RemoteException e) { 2805 } 2806 } 2807 2808 /** 2809 * Kills the specified UID. 2810 * @param uid The UID to kill. 2811 * @param reason The reason for the kill. 2812 * 2813 * @hide 2814 */ 2815 @RequiresPermission(Manifest.permission.KILL_UID) 2816 public void killUid(int uid, String reason) { 2817 try { 2818 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2819 UserHandle.getUserId(uid), reason); 2820 } catch (RemoteException e) { 2821 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2822 } 2823 } 2824 2825 /** 2826 * Have the system perform a force stop of everything associated with 2827 * the given application package. All processes that share its uid 2828 * will be killed, all services it has running stopped, all activities 2829 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2830 * broadcast will be sent, so that any of its registered alarms can 2831 * be stopped, notifications removed, etc. 2832 * 2833 * <p>You must hold the permission 2834 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2835 * call this method. 2836 * 2837 * @param packageName The name of the package to be stopped. 2838 * @param userId The user for which the running package is to be stopped. 2839 * 2840 * @hide This is not available to third party applications due to 2841 * it allowing them to break other applications by stopping their 2842 * services, removing their alarms, etc. 2843 */ 2844 public void forceStopPackageAsUser(String packageName, int userId) { 2845 try { 2846 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2847 } catch (RemoteException e) { 2848 } 2849 } 2850 2851 /** 2852 * @see #forceStopPackageAsUser(String, int) 2853 * @hide 2854 */ 2855 public void forceStopPackage(String packageName) { 2856 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2857 } 2858 2859 /** 2860 * Get the device configuration attributes. 2861 */ 2862 public ConfigurationInfo getDeviceConfigurationInfo() { 2863 try { 2864 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2865 } catch (RemoteException e) { 2866 } 2867 return null; 2868 } 2869 2870 /** 2871 * Get the preferred density of icons for the launcher. This is used when 2872 * custom drawables are created (e.g., for shortcuts). 2873 * 2874 * @return density in terms of DPI 2875 */ 2876 public int getLauncherLargeIconDensity() { 2877 final Resources res = mContext.getResources(); 2878 final int density = res.getDisplayMetrics().densityDpi; 2879 final int sw = res.getConfiguration().smallestScreenWidthDp; 2880 2881 if (sw < 600) { 2882 // Smaller than approx 7" tablets, use the regular icon size. 2883 return density; 2884 } 2885 2886 switch (density) { 2887 case DisplayMetrics.DENSITY_LOW: 2888 return DisplayMetrics.DENSITY_MEDIUM; 2889 case DisplayMetrics.DENSITY_MEDIUM: 2890 return DisplayMetrics.DENSITY_HIGH; 2891 case DisplayMetrics.DENSITY_TV: 2892 return DisplayMetrics.DENSITY_XHIGH; 2893 case DisplayMetrics.DENSITY_HIGH: 2894 return DisplayMetrics.DENSITY_XHIGH; 2895 case DisplayMetrics.DENSITY_XHIGH: 2896 return DisplayMetrics.DENSITY_XXHIGH; 2897 case DisplayMetrics.DENSITY_XXHIGH: 2898 return DisplayMetrics.DENSITY_XHIGH * 2; 2899 default: 2900 // The density is some abnormal value. Return some other 2901 // abnormal value that is a reasonable scaling of it. 2902 return (int)((density*1.5f)+.5f); 2903 } 2904 } 2905 2906 /** 2907 * Get the preferred launcher icon size. This is used when custom drawables 2908 * are created (e.g., for shortcuts). 2909 * 2910 * @return dimensions of square icons in terms of pixels 2911 */ 2912 public int getLauncherLargeIconSize() { 2913 return getLauncherLargeIconSizeInner(mContext); 2914 } 2915 2916 static int getLauncherLargeIconSizeInner(Context context) { 2917 final Resources res = context.getResources(); 2918 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2919 final int sw = res.getConfiguration().smallestScreenWidthDp; 2920 2921 if (sw < 600) { 2922 // Smaller than approx 7" tablets, use the regular icon size. 2923 return size; 2924 } 2925 2926 final int density = res.getDisplayMetrics().densityDpi; 2927 2928 switch (density) { 2929 case DisplayMetrics.DENSITY_LOW: 2930 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2931 case DisplayMetrics.DENSITY_MEDIUM: 2932 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2933 case DisplayMetrics.DENSITY_TV: 2934 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2935 case DisplayMetrics.DENSITY_HIGH: 2936 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2937 case DisplayMetrics.DENSITY_XHIGH: 2938 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2939 case DisplayMetrics.DENSITY_XXHIGH: 2940 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2941 default: 2942 // The density is some abnormal value. Return some other 2943 // abnormal value that is a reasonable scaling of it. 2944 return (int)((size*1.5f) + .5f); 2945 } 2946 } 2947 2948 /** 2949 * Returns "true" if the user interface is currently being messed with 2950 * by a monkey. 2951 */ 2952 public static boolean isUserAMonkey() { 2953 try { 2954 return ActivityManagerNative.getDefault().isUserAMonkey(); 2955 } catch (RemoteException e) { 2956 } 2957 return false; 2958 } 2959 2960 /** 2961 * Returns "true" if device is running in a test harness. 2962 */ 2963 public static boolean isRunningInTestHarness() { 2964 return SystemProperties.getBoolean("ro.test_harness", false); 2965 } 2966 2967 /** 2968 * Returns the launch count of each installed package. 2969 * 2970 * @hide 2971 */ 2972 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2973 try { 2974 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2975 ServiceManager.getService("usagestats")); 2976 if (usageStatsService == null) { 2977 return new HashMap<String, Integer>(); 2978 } 2979 2980 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2981 ActivityThread.currentPackageName()); 2982 if (allPkgUsageStats == null) { 2983 return new HashMap<String, Integer>(); 2984 } 2985 2986 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2987 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2988 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2989 } 2990 2991 return launchCounts; 2992 } catch (RemoteException e) { 2993 Log.w(TAG, "Could not query launch counts", e); 2994 return new HashMap<String, Integer>(); 2995 } 2996 }*/ 2997 2998 /** @hide */ 2999 public static int checkComponentPermission(String permission, int uid, 3000 int owningUid, boolean exported) { 3001 // Root, system server get to do everything. 3002 final int appId = UserHandle.getAppId(uid); 3003 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 3004 return PackageManager.PERMISSION_GRANTED; 3005 } 3006 // Isolated processes don't get any permissions. 3007 if (UserHandle.isIsolated(uid)) { 3008 return PackageManager.PERMISSION_DENIED; 3009 } 3010 // If there is a uid that owns whatever is being accessed, it has 3011 // blanket access to it regardless of the permissions it requires. 3012 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 3013 return PackageManager.PERMISSION_GRANTED; 3014 } 3015 // If the target is not exported, then nobody else can get to it. 3016 if (!exported) { 3017 /* 3018 RuntimeException here = new RuntimeException("here"); 3019 here.fillInStackTrace(); 3020 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3021 here); 3022 */ 3023 return PackageManager.PERMISSION_DENIED; 3024 } 3025 if (permission == null) { 3026 return PackageManager.PERMISSION_GRANTED; 3027 } 3028 try { 3029 return AppGlobals.getPackageManager() 3030 .checkUidPermission(permission, uid); 3031 } catch (RemoteException e) { 3032 // Should never happen, but if it does... deny! 3033 Slog.e(TAG, "PackageManager is dead?!?", e); 3034 } 3035 return PackageManager.PERMISSION_DENIED; 3036 } 3037 3038 /** @hide */ 3039 public static int checkUidPermission(String permission, int uid) { 3040 try { 3041 return AppGlobals.getPackageManager() 3042 .checkUidPermission(permission, uid); 3043 } catch (RemoteException e) { 3044 // Should never happen, but if it does... deny! 3045 Slog.e(TAG, "PackageManager is dead?!?", e); 3046 } 3047 return PackageManager.PERMISSION_DENIED; 3048 } 3049 3050 /** 3051 * @hide 3052 * Helper for dealing with incoming user arguments to system service calls. 3053 * Takes care of checking permissions and converting USER_CURRENT to the 3054 * actual current user. 3055 * 3056 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3057 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3058 * @param userId The user id argument supplied by the caller -- this is the user 3059 * they want to run as. 3060 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3061 * to get a USER_ALL returned and deal with it correctly. If false, 3062 * an exception will be thrown if USER_ALL is supplied. 3063 * @param requireFull If true, the caller must hold 3064 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3065 * different user than their current process; otherwise they must hold 3066 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3067 * @param name Optional textual name of the incoming call; only for generating error messages. 3068 * @param callerPackage Optional package name of caller; only for error messages. 3069 * 3070 * @return Returns the user ID that the call should run as. Will always be a concrete 3071 * user number, unless <var>allowAll</var> is true in which case it could also be 3072 * USER_ALL. 3073 */ 3074 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3075 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3076 if (UserHandle.getUserId(callingUid) == userId) { 3077 return userId; 3078 } 3079 try { 3080 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3081 callingUid, userId, allowAll, requireFull, name, callerPackage); 3082 } catch (RemoteException e) { 3083 throw new SecurityException("Failed calling activity manager", e); 3084 } 3085 } 3086 3087 /** 3088 * Gets the userId of the current foreground user. Requires system permissions. 3089 * @hide 3090 */ 3091 @SystemApi 3092 public static int getCurrentUser() { 3093 UserInfo ui; 3094 try { 3095 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3096 return ui != null ? ui.id : 0; 3097 } catch (RemoteException e) { 3098 return 0; 3099 } 3100 } 3101 3102 /** 3103 * @param userid the user's id. Zero indicates the default user. 3104 * @hide 3105 */ 3106 public boolean switchUser(int userid) { 3107 try { 3108 return ActivityManagerNative.getDefault().switchUser(userid); 3109 } catch (RemoteException e) { 3110 return false; 3111 } 3112 } 3113 3114 /** {@hide} */ 3115 public static final int FLAG_OR_STOPPED = 1 << 0; 3116 /** {@hide} */ 3117 public static final int FLAG_AND_LOCKED = 1 << 1; 3118 /** {@hide} */ 3119 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3120 3121 /** 3122 * Return whether the given user is actively running. This means that 3123 * the user is in the "started" state, not "stopped" -- it is currently 3124 * allowed to run code through scheduled alarms, receiving broadcasts, 3125 * etc. A started user may be either the current foreground user or a 3126 * background user; the result here does not distinguish between the two. 3127 * @param userid the user's id. Zero indicates the default user. 3128 * @hide 3129 */ 3130 public boolean isUserRunning(int userId) { 3131 try { 3132 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3133 } catch (RemoteException e) { 3134 return false; 3135 } 3136 } 3137 3138 /** {@hide} */ 3139 public boolean isUserRunningAndLocked(int userId) { 3140 try { 3141 return ActivityManagerNative.getDefault().isUserRunning(userId, 3142 ActivityManager.FLAG_AND_LOCKED); 3143 } catch (RemoteException e) { 3144 return false; 3145 } 3146 } 3147 3148 /** {@hide} */ 3149 public boolean isUserRunningAndUnlocked(int userId) { 3150 try { 3151 return ActivityManagerNative.getDefault().isUserRunning(userId, 3152 ActivityManager.FLAG_AND_UNLOCKED); 3153 } catch (RemoteException e) { 3154 return false; 3155 } 3156 } 3157 3158 /** 3159 * Perform a system dump of various state associated with the given application 3160 * package name. This call blocks while the dump is being performed, so should 3161 * not be done on a UI thread. The data will be written to the given file 3162 * descriptor as text. An application must hold the 3163 * {@link android.Manifest.permission#DUMP} permission to make this call. 3164 * @param fd The file descriptor that the dump should be written to. The file 3165 * descriptor is <em>not</em> closed by this function; the caller continues to 3166 * own it. 3167 * @param packageName The name of the package that is to be dumped. 3168 */ 3169 public void dumpPackageState(FileDescriptor fd, String packageName) { 3170 dumpPackageStateStatic(fd, packageName); 3171 } 3172 3173 /** 3174 * @hide 3175 */ 3176 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3177 FileOutputStream fout = new FileOutputStream(fd); 3178 PrintWriter pw = new FastPrintWriter(fout); 3179 dumpService(pw, fd, "package", new String[] { packageName }); 3180 pw.println(); 3181 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3182 "-a", "package", packageName }); 3183 pw.println(); 3184 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3185 pw.println(); 3186 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3187 pw.println(); 3188 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3189 pw.println(); 3190 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3191 pw.flush(); 3192 } 3193 3194 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3195 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3196 IBinder service = ServiceManager.checkService(name); 3197 if (service == null) { 3198 pw.println(" (Service not found)"); 3199 return; 3200 } 3201 TransferPipe tp = null; 3202 try { 3203 pw.flush(); 3204 tp = new TransferPipe(); 3205 tp.setBufferPrefix(" "); 3206 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3207 tp.go(fd, 10000); 3208 } catch (Throwable e) { 3209 if (tp != null) { 3210 tp.kill(); 3211 } 3212 pw.println("Failure dumping service:"); 3213 e.printStackTrace(pw); 3214 } 3215 } 3216 3217 /** 3218 * Request that the system start watching for the calling process to exceed a pss 3219 * size as given here. Once called, the system will look for any occasions where it 3220 * sees the associated process with a larger pss size and, when this happens, automatically 3221 * pull a heap dump from it and allow the user to share the data. Note that this request 3222 * continues running even if the process is killed and restarted. To remove the watch, 3223 * use {@link #clearWatchHeapLimit()}. 3224 * 3225 * <p>This API only work if the calling process has been marked as 3226 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3227 * (userdebug or eng) build.</p> 3228 * 3229 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3230 * handle heap limit reports themselves.</p> 3231 * 3232 * @param pssSize The size in bytes to set the limit at. 3233 */ 3234 public void setWatchHeapLimit(long pssSize) { 3235 try { 3236 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3237 mContext.getPackageName()); 3238 } catch (RemoteException e) { 3239 } 3240 } 3241 3242 /** 3243 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3244 * If your package has an activity handling this action, it will be launched with the 3245 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3246 * match the activty must support this action and a MIME type of "*/*". 3247 */ 3248 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3249 3250 /** 3251 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3252 */ 3253 public void clearWatchHeapLimit() { 3254 try { 3255 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3256 } catch (RemoteException e) { 3257 } 3258 } 3259 3260 /** 3261 * @hide 3262 */ 3263 public void startLockTaskMode(int taskId) { 3264 try { 3265 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3266 } catch (RemoteException e) { 3267 } 3268 } 3269 3270 /** 3271 * @hide 3272 */ 3273 public void stopLockTaskMode() { 3274 try { 3275 ActivityManagerNative.getDefault().stopLockTaskMode(); 3276 } catch (RemoteException e) { 3277 } 3278 } 3279 3280 /** 3281 * Return whether currently in lock task mode. When in this mode 3282 * no new tasks can be created or switched to. 3283 * 3284 * @see Activity#startLockTask() 3285 * 3286 * @deprecated Use {@link #getLockTaskModeState} instead. 3287 */ 3288 public boolean isInLockTaskMode() { 3289 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3290 } 3291 3292 /** 3293 * Return the current state of task locking. The three possible outcomes 3294 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3295 * and {@link #LOCK_TASK_MODE_PINNED}. 3296 * 3297 * @see Activity#startLockTask() 3298 */ 3299 public int getLockTaskModeState() { 3300 try { 3301 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3302 } catch (RemoteException e) { 3303 return ActivityManager.LOCK_TASK_MODE_NONE; 3304 } 3305 } 3306 3307 /** 3308 * The AppTask allows you to manage your own application's tasks. 3309 * See {@link android.app.ActivityManager#getAppTasks()} 3310 */ 3311 public static class AppTask { 3312 private IAppTask mAppTaskImpl; 3313 3314 /** @hide */ 3315 public AppTask(IAppTask task) { 3316 mAppTaskImpl = task; 3317 } 3318 3319 /** 3320 * Finishes all activities in this task and removes it from the recent tasks list. 3321 */ 3322 public void finishAndRemoveTask() { 3323 try { 3324 mAppTaskImpl.finishAndRemoveTask(); 3325 } catch (RemoteException e) { 3326 Slog.e(TAG, "Invalid AppTask", e); 3327 } 3328 } 3329 3330 /** 3331 * Get the RecentTaskInfo associated with this task. 3332 * 3333 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3334 */ 3335 public RecentTaskInfo getTaskInfo() { 3336 try { 3337 return mAppTaskImpl.getTaskInfo(); 3338 } catch (RemoteException e) { 3339 Slog.e(TAG, "Invalid AppTask", e); 3340 return null; 3341 } 3342 } 3343 3344 /** 3345 * Bring this task to the foreground. If it contains activities, they will be 3346 * brought to the foreground with it and their instances re-created if needed. 3347 * If it doesn't contain activities, the root activity of the task will be 3348 * re-launched. 3349 */ 3350 public void moveToFront() { 3351 try { 3352 mAppTaskImpl.moveToFront(); 3353 } catch (RemoteException e) { 3354 Slog.e(TAG, "Invalid AppTask", e); 3355 } 3356 } 3357 3358 /** 3359 * Start an activity in this task. Brings the task to the foreground. If this task 3360 * is not currently active (that is, its id < 0), then a new activity for the given 3361 * Intent will be launched as the root of the task and the task brought to the 3362 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3363 * an activity to launch in a new task, then a new activity for the given Intent will 3364 * be launched on top of the task and the task brought to the foreground. If this 3365 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3366 * or would otherwise be launched in to a new task, then the activity not launched but 3367 * this task be brought to the foreground and a new intent delivered to the top 3368 * activity if appropriate. 3369 * 3370 * <p>In other words, you generally want to use an Intent here that does not specify 3371 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3372 * and let the system do the right thing.</p> 3373 * 3374 * @param intent The Intent describing the new activity to be launched on the task. 3375 * @param options Optional launch options. 3376 * 3377 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3378 */ 3379 public void startActivity(Context context, Intent intent, Bundle options) { 3380 ActivityThread thread = ActivityThread.currentActivityThread(); 3381 thread.getInstrumentation().execStartActivityFromAppTask(context, 3382 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3383 } 3384 3385 /** 3386 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3387 * Intent of this AppTask. 3388 * 3389 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3390 * be set; otherwise, it will be cleared. 3391 */ 3392 public void setExcludeFromRecents(boolean exclude) { 3393 try { 3394 mAppTaskImpl.setExcludeFromRecents(exclude); 3395 } catch (RemoteException e) { 3396 Slog.e(TAG, "Invalid AppTask", e); 3397 } 3398 } 3399 } 3400} 3401