ActivityManager.java revision 9d8a1048bb666c68402dce031bebfa07c92a42db
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 /** 554 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 555 * specifies the position of the created docked stack at the top half of the screen if 556 * in portrait mode or at the left half of the screen if in landscape mode. 557 * @hide 558 */ 559 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 560 561 /** 562 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 563 * specifies the position of the created docked stack at the bottom half of the screen if 564 * in portrait mode or at the right half of the screen if in landscape mode. 565 * @hide 566 */ 567 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 568 569 /** 570 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 571 * that the resize doesn't need to preserve the window, and can be skipped if bounds 572 * is unchanged. This mode is used by window manager in most cases. 573 * @hide 574 */ 575 public static final int RESIZE_MODE_SYSTEM = 0; 576 577 /** 578 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 579 * that the resize should preserve the window if possible. 580 * @hide 581 */ 582 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 583 584 /** 585 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 586 * that the resize should be performed even if the bounds appears unchanged. 587 * @hide 588 */ 589 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 590 591 /** 592 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 593 * manager during a screen rotation. 594 * @hide 595 */ 596 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 597 598 /** 599 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 600 * resize is due to a drag action. 601 * @hide 602 */ 603 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 604 605 /** 606 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 607 * that the resize should preserve the window if possible, and should not be skipped 608 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 609 * is ending. 610 * @hide 611 */ 612 public static final int RESIZE_MODE_USER_FORCED = 613 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 614 615 /** @hide */ 616 public int getFrontActivityScreenCompatMode() { 617 try { 618 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 619 } catch (RemoteException e) { 620 // System dead, we will be dead too soon! 621 return 0; 622 } 623 } 624 625 /** @hide */ 626 public void setFrontActivityScreenCompatMode(int mode) { 627 try { 628 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 629 } catch (RemoteException e) { 630 // System dead, we will be dead too soon! 631 } 632 } 633 634 /** @hide */ 635 public int getPackageScreenCompatMode(String packageName) { 636 try { 637 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 638 } catch (RemoteException e) { 639 // System dead, we will be dead too soon! 640 return 0; 641 } 642 } 643 644 /** @hide */ 645 public void setPackageScreenCompatMode(String packageName, int mode) { 646 try { 647 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 648 } catch (RemoteException e) { 649 // System dead, we will be dead too soon! 650 } 651 } 652 653 /** @hide */ 654 public boolean getPackageAskScreenCompat(String packageName) { 655 try { 656 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 657 } catch (RemoteException e) { 658 // System dead, we will be dead too soon! 659 return false; 660 } 661 } 662 663 /** @hide */ 664 public void setPackageAskScreenCompat(String packageName, boolean ask) { 665 try { 666 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 667 } catch (RemoteException e) { 668 // System dead, we will be dead too soon! 669 } 670 } 671 672 /** 673 * Return the approximate per-application memory class of the current 674 * device. This gives you an idea of how hard a memory limit you should 675 * impose on your application to let the overall system work best. The 676 * returned value is in megabytes; the baseline Android memory class is 677 * 16 (which happens to be the Java heap limit of those devices); some 678 * device with more memory may return 24 or even higher numbers. 679 */ 680 public int getMemoryClass() { 681 return staticGetMemoryClass(); 682 } 683 684 /** @hide */ 685 static public int staticGetMemoryClass() { 686 // Really brain dead right now -- just take this from the configured 687 // vm heap size, and assume it is in megabytes and thus ends with "m". 688 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 689 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 690 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 691 } 692 return staticGetLargeMemoryClass(); 693 } 694 695 /** 696 * Return the approximate per-application memory class of the current 697 * device when an application is running with a large heap. This is the 698 * space available for memory-intensive applications; most applications 699 * should not need this amount of memory, and should instead stay with the 700 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 701 * This may be the same size as {@link #getMemoryClass()} on memory 702 * constrained devices, or it may be significantly larger on devices with 703 * a large amount of available RAM. 704 * 705 * <p>The is the size of the application's Dalvik heap if it has 706 * specified <code>android:largeHeap="true"</code> in its manifest. 707 */ 708 public int getLargeMemoryClass() { 709 return staticGetLargeMemoryClass(); 710 } 711 712 /** @hide */ 713 static public int staticGetLargeMemoryClass() { 714 // Really brain dead right now -- just take this from the configured 715 // vm heap size, and assume it is in megabytes and thus ends with "m". 716 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 717 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 718 } 719 720 /** 721 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 722 * is ultimately up to the device configuration, but currently it generally means 723 * something in the class of a 512MB device with about a 800x480 or less screen. 724 * This is mostly intended to be used by apps to determine whether they should turn 725 * off certain features that require more RAM. 726 */ 727 public boolean isLowRamDevice() { 728 return isLowRamDeviceStatic(); 729 } 730 731 /** @hide */ 732 public static boolean isLowRamDeviceStatic() { 733 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 734 } 735 736 /** 737 * Used by persistent processes to determine if they are running on a 738 * higher-end device so should be okay using hardware drawing acceleration 739 * (which tends to consume a lot more RAM). 740 * @hide 741 */ 742 static public boolean isHighEndGfx() { 743 return !isLowRamDeviceStatic() && 744 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 745 } 746 747 /** 748 * Return the maximum number of recents entries that we will maintain and show. 749 * @hide 750 */ 751 static public int getMaxRecentTasksStatic() { 752 if (gMaxRecentTasks < 0) { 753 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 754 } 755 return gMaxRecentTasks; 756 } 757 758 /** 759 * Return the default limit on the number of recents that an app can make. 760 * @hide 761 */ 762 static public int getDefaultAppRecentsLimitStatic() { 763 return getMaxRecentTasksStatic() / 6; 764 } 765 766 /** 767 * Return the maximum limit on the number of recents that an app can make. 768 * @hide 769 */ 770 static public int getMaxAppRecentsLimitStatic() { 771 return getMaxRecentTasksStatic() / 2; 772 } 773 774 /** 775 * Information you can set and retrieve about the current activity within the recent task list. 776 */ 777 public static class TaskDescription implements Parcelable { 778 /** @hide */ 779 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 780 private static final String ATTR_TASKDESCRIPTIONLABEL = 781 ATTR_TASKDESCRIPTION_PREFIX + "label"; 782 private static final String ATTR_TASKDESCRIPTIONCOLOR = 783 ATTR_TASKDESCRIPTION_PREFIX + "color"; 784 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 785 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 786 787 private String mLabel; 788 private Bitmap mIcon; 789 private String mIconFilename; 790 private int mColorPrimary; 791 792 /** 793 * Creates the TaskDescription to the specified values. 794 * 795 * @param label A label and description of the current state of this task. 796 * @param icon An icon that represents the current state of this task. 797 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 798 */ 799 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 800 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 801 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 802 } 803 804 mLabel = label; 805 mIcon = icon; 806 mColorPrimary = colorPrimary; 807 } 808 809 /** @hide */ 810 public TaskDescription(String label, int colorPrimary, String iconFilename) { 811 this(label, null, colorPrimary); 812 mIconFilename = iconFilename; 813 } 814 815 /** 816 * Creates the TaskDescription to the specified values. 817 * 818 * @param label A label and description of the current state of this activity. 819 * @param icon An icon that represents the current state of this activity. 820 */ 821 public TaskDescription(String label, Bitmap icon) { 822 this(label, icon, 0); 823 } 824 825 /** 826 * Creates the TaskDescription to the specified values. 827 * 828 * @param label A label and description of the current state of this activity. 829 */ 830 public TaskDescription(String label) { 831 this(label, null, 0); 832 } 833 834 /** 835 * Creates an empty TaskDescription. 836 */ 837 public TaskDescription() { 838 this(null, null, 0); 839 } 840 841 /** 842 * Creates a copy of another TaskDescription. 843 */ 844 public TaskDescription(TaskDescription td) { 845 mLabel = td.mLabel; 846 mIcon = td.mIcon; 847 mColorPrimary = td.mColorPrimary; 848 mIconFilename = td.mIconFilename; 849 } 850 851 private TaskDescription(Parcel source) { 852 readFromParcel(source); 853 } 854 855 /** 856 * Sets the label for this task description. 857 * @hide 858 */ 859 public void setLabel(String label) { 860 mLabel = label; 861 } 862 863 /** 864 * Sets the primary color for this task description. 865 * @hide 866 */ 867 public void setPrimaryColor(int primaryColor) { 868 // Ensure that the given color is valid 869 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 870 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 871 } 872 mColorPrimary = primaryColor; 873 } 874 875 /** 876 * Sets the icon for this task description. 877 * @hide 878 */ 879 public void setIcon(Bitmap icon) { 880 mIcon = icon; 881 } 882 883 /** 884 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 885 * bitmap. 886 * @hide 887 */ 888 public void setIconFilename(String iconFilename) { 889 mIconFilename = iconFilename; 890 mIcon = null; 891 } 892 893 /** 894 * @return The label and description of the current state of this task. 895 */ 896 public String getLabel() { 897 return mLabel; 898 } 899 900 /** 901 * @return The icon that represents the current state of this task. 902 */ 903 public Bitmap getIcon() { 904 if (mIcon != null) { 905 return mIcon; 906 } 907 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 908 } 909 910 /** @hide */ 911 public String getIconFilename() { 912 return mIconFilename; 913 } 914 915 /** @hide */ 916 public Bitmap getInMemoryIcon() { 917 return mIcon; 918 } 919 920 /** @hide */ 921 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 922 if (iconFilename != null) { 923 try { 924 return ActivityManagerNative.getDefault(). 925 getTaskDescriptionIcon(iconFilename, userId); 926 } catch (RemoteException e) { 927 } 928 } 929 return null; 930 } 931 932 /** 933 * @return The color override on the theme's primary color. 934 */ 935 public int getPrimaryColor() { 936 return mColorPrimary; 937 } 938 939 /** @hide */ 940 public void saveToXml(XmlSerializer out) throws IOException { 941 if (mLabel != null) { 942 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 943 } 944 if (mColorPrimary != 0) { 945 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 946 } 947 if (mIconFilename != null) { 948 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 949 } 950 } 951 952 /** @hide */ 953 public void restoreFromXml(String attrName, String attrValue) { 954 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 955 setLabel(attrValue); 956 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 957 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 958 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 959 setIconFilename(attrValue); 960 } 961 } 962 963 @Override 964 public int describeContents() { 965 return 0; 966 } 967 968 @Override 969 public void writeToParcel(Parcel dest, int flags) { 970 if (mLabel == null) { 971 dest.writeInt(0); 972 } else { 973 dest.writeInt(1); 974 dest.writeString(mLabel); 975 } 976 if (mIcon == null) { 977 dest.writeInt(0); 978 } else { 979 dest.writeInt(1); 980 mIcon.writeToParcel(dest, 0); 981 } 982 dest.writeInt(mColorPrimary); 983 if (mIconFilename == null) { 984 dest.writeInt(0); 985 } else { 986 dest.writeInt(1); 987 dest.writeString(mIconFilename); 988 } 989 } 990 991 public void readFromParcel(Parcel source) { 992 mLabel = source.readInt() > 0 ? source.readString() : null; 993 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 994 mColorPrimary = source.readInt(); 995 mIconFilename = source.readInt() > 0 ? source.readString() : null; 996 } 997 998 public static final Creator<TaskDescription> CREATOR 999 = new Creator<TaskDescription>() { 1000 public TaskDescription createFromParcel(Parcel source) { 1001 return new TaskDescription(source); 1002 } 1003 public TaskDescription[] newArray(int size) { 1004 return new TaskDescription[size]; 1005 } 1006 }; 1007 1008 @Override 1009 public String toString() { 1010 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1011 " colorPrimary: " + mColorPrimary; 1012 } 1013 } 1014 1015 /** 1016 * Information you can retrieve about tasks that the user has most recently 1017 * started or visited. 1018 */ 1019 public static class RecentTaskInfo implements Parcelable { 1020 /** 1021 * If this task is currently running, this is the identifier for it. 1022 * If it is not running, this will be -1. 1023 */ 1024 public int id; 1025 1026 /** 1027 * The true identifier of this task, valid even if it is not running. 1028 */ 1029 public int persistentId; 1030 1031 /** 1032 * The original Intent used to launch the task. You can use this 1033 * Intent to re-launch the task (if it is no longer running) or bring 1034 * the current task to the front. 1035 */ 1036 public Intent baseIntent; 1037 1038 /** 1039 * If this task was started from an alias, this is the actual 1040 * activity component that was initially started; the component of 1041 * the baseIntent in this case is the name of the actual activity 1042 * implementation that the alias referred to. Otherwise, this is null. 1043 */ 1044 public ComponentName origActivity; 1045 1046 /** 1047 * The actual activity component that started the task. 1048 * @hide 1049 */ 1050 @Nullable 1051 public ComponentName realActivity; 1052 1053 /** 1054 * Description of the task's last state. 1055 */ 1056 public CharSequence description; 1057 1058 /** 1059 * The id of the ActivityStack this Task was on most recently. 1060 * @hide 1061 */ 1062 public int stackId; 1063 1064 /** 1065 * The id of the user the task was running as. 1066 * @hide 1067 */ 1068 public int userId; 1069 1070 /** 1071 * The first time this task was active. 1072 * @hide 1073 */ 1074 public long firstActiveTime; 1075 1076 /** 1077 * The last time this task was active. 1078 * @hide 1079 */ 1080 public long lastActiveTime; 1081 1082 /** 1083 * The recent activity values for the highest activity in the stack to have set the values. 1084 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1085 */ 1086 public TaskDescription taskDescription; 1087 1088 /** 1089 * Task affiliation for grouping with other tasks. 1090 */ 1091 public int affiliatedTaskId; 1092 1093 /** 1094 * Task affiliation color of the source task with the affiliated task id. 1095 * 1096 * @hide 1097 */ 1098 public int affiliatedTaskColor; 1099 1100 /** 1101 * The component launched as the first activity in the task. 1102 * This can be considered the "application" of this task. 1103 */ 1104 public ComponentName baseActivity; 1105 1106 /** 1107 * The activity component at the top of the history stack of the task. 1108 * This is what the user is currently doing. 1109 */ 1110 public ComponentName topActivity; 1111 1112 /** 1113 * Number of activities in this task. 1114 */ 1115 public int numActivities; 1116 1117 /** 1118 * The bounds of the task. 1119 * @hide 1120 */ 1121 public Rect bounds; 1122 1123 public RecentTaskInfo() { 1124 } 1125 1126 @Override 1127 public int describeContents() { 1128 return 0; 1129 } 1130 1131 @Override 1132 public void writeToParcel(Parcel dest, int flags) { 1133 dest.writeInt(id); 1134 dest.writeInt(persistentId); 1135 if (baseIntent != null) { 1136 dest.writeInt(1); 1137 baseIntent.writeToParcel(dest, 0); 1138 } else { 1139 dest.writeInt(0); 1140 } 1141 ComponentName.writeToParcel(origActivity, dest); 1142 ComponentName.writeToParcel(realActivity, dest); 1143 TextUtils.writeToParcel(description, dest, 1144 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1145 if (taskDescription != null) { 1146 dest.writeInt(1); 1147 taskDescription.writeToParcel(dest, 0); 1148 } else { 1149 dest.writeInt(0); 1150 } 1151 dest.writeInt(stackId); 1152 dest.writeInt(userId); 1153 dest.writeLong(firstActiveTime); 1154 dest.writeLong(lastActiveTime); 1155 dest.writeInt(affiliatedTaskId); 1156 dest.writeInt(affiliatedTaskColor); 1157 ComponentName.writeToParcel(baseActivity, dest); 1158 ComponentName.writeToParcel(topActivity, dest); 1159 dest.writeInt(numActivities); 1160 if (bounds != null) { 1161 dest.writeInt(1); 1162 bounds.writeToParcel(dest, 0); 1163 } else { 1164 dest.writeInt(0); 1165 } 1166 } 1167 1168 public void readFromParcel(Parcel source) { 1169 id = source.readInt(); 1170 persistentId = source.readInt(); 1171 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1172 origActivity = ComponentName.readFromParcel(source); 1173 realActivity = ComponentName.readFromParcel(source); 1174 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1175 taskDescription = source.readInt() > 0 ? 1176 TaskDescription.CREATOR.createFromParcel(source) : null; 1177 stackId = source.readInt(); 1178 userId = source.readInt(); 1179 firstActiveTime = source.readLong(); 1180 lastActiveTime = source.readLong(); 1181 affiliatedTaskId = source.readInt(); 1182 affiliatedTaskColor = source.readInt(); 1183 baseActivity = ComponentName.readFromParcel(source); 1184 topActivity = ComponentName.readFromParcel(source); 1185 numActivities = source.readInt(); 1186 bounds = source.readInt() > 0 ? 1187 Rect.CREATOR.createFromParcel(source) : null; 1188 } 1189 1190 public static final Creator<RecentTaskInfo> CREATOR 1191 = new Creator<RecentTaskInfo>() { 1192 public RecentTaskInfo createFromParcel(Parcel source) { 1193 return new RecentTaskInfo(source); 1194 } 1195 public RecentTaskInfo[] newArray(int size) { 1196 return new RecentTaskInfo[size]; 1197 } 1198 }; 1199 1200 private RecentTaskInfo(Parcel source) { 1201 readFromParcel(source); 1202 } 1203 } 1204 1205 /** 1206 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1207 * that have set their 1208 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1209 */ 1210 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1211 1212 /** 1213 * Provides a list that does not contain any 1214 * recent tasks that currently are not available to the user. 1215 */ 1216 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1217 1218 /** 1219 * Provides a list that contains recent tasks for all 1220 * profiles of a user. 1221 * @hide 1222 */ 1223 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1224 1225 /** 1226 * Ignores all tasks that are on the home stack. 1227 * @hide 1228 */ 1229 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1230 1231 /** 1232 * <p></p>Return a list of the tasks that the user has recently launched, with 1233 * the most recent being first and older ones after in order. 1234 * 1235 * <p><b>Note: this method is only intended for debugging and presenting 1236 * task management user interfaces</b>. This should never be used for 1237 * core logic in an application, such as deciding between different 1238 * behaviors based on the information found here. Such uses are 1239 * <em>not</em> supported, and will likely break in the future. For 1240 * example, if multiple applications can be actively running at the 1241 * same time, assumptions made about the meaning of the data here for 1242 * purposes of control flow will be incorrect.</p> 1243 * 1244 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1245 * no longer available to third party applications: the introduction of 1246 * document-centric recents means 1247 * it can leak personal information to the caller. For backwards compatibility, 1248 * it will still return a small subset of its data: at least the caller's 1249 * own tasks (though see {@link #getAppTasks()} for the correct supported 1250 * way to retrieve that information), and possibly some other tasks 1251 * such as home that are known to not be sensitive. 1252 * 1253 * @param maxNum The maximum number of entries to return in the list. The 1254 * actual number returned may be smaller, depending on how many tasks the 1255 * user has started and the maximum number the system can remember. 1256 * @param flags Information about what to return. May be any combination 1257 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1258 * 1259 * @return Returns a list of RecentTaskInfo records describing each of 1260 * the recent tasks. 1261 */ 1262 @Deprecated 1263 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1264 throws SecurityException { 1265 try { 1266 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1267 flags, UserHandle.myUserId()); 1268 } catch (RemoteException e) { 1269 // System dead, we will be dead too soon! 1270 return null; 1271 } 1272 } 1273 1274 /** 1275 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1276 * specific user. It requires holding 1277 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1278 * @param maxNum The maximum number of entries to return in the list. The 1279 * actual number returned may be smaller, depending on how many tasks the 1280 * user has started and the maximum number the system can remember. 1281 * @param flags Information about what to return. May be any combination 1282 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1283 * 1284 * @return Returns a list of RecentTaskInfo records describing each of 1285 * the recent tasks. Most recently activated tasks go first. 1286 * 1287 * @hide 1288 */ 1289 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1290 throws SecurityException { 1291 try { 1292 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1293 flags, userId); 1294 } catch (RemoteException e) { 1295 // System dead, we will be dead too soon! 1296 return null; 1297 } 1298 } 1299 1300 /** 1301 * Information you can retrieve about a particular task that is currently 1302 * "running" in the system. Note that a running task does not mean the 1303 * given task actually has a process it is actively running in; it simply 1304 * means that the user has gone to it and never closed it, but currently 1305 * the system may have killed its process and is only holding on to its 1306 * last state in order to restart it when the user returns. 1307 */ 1308 public static class RunningTaskInfo implements Parcelable { 1309 /** 1310 * A unique identifier for this task. 1311 */ 1312 public int id; 1313 1314 /** 1315 * The stack that currently contains this task. 1316 * @hide 1317 */ 1318 public int stackId; 1319 1320 /** 1321 * The component launched as the first activity in the task. This can 1322 * be considered the "application" of this task. 1323 */ 1324 public ComponentName baseActivity; 1325 1326 /** 1327 * The activity component at the top of the history stack of the task. 1328 * This is what the user is currently doing. 1329 */ 1330 public ComponentName topActivity; 1331 1332 /** 1333 * Thumbnail representation of the task's current state. Currently 1334 * always null. 1335 */ 1336 public Bitmap thumbnail; 1337 1338 /** 1339 * Description of the task's current state. 1340 */ 1341 public CharSequence description; 1342 1343 /** 1344 * Number of activities in this task. 1345 */ 1346 public int numActivities; 1347 1348 /** 1349 * Number of activities that are currently running (not stopped 1350 * and persisted) in this task. 1351 */ 1352 public int numRunning; 1353 1354 /** 1355 * Last time task was run. For sorting. 1356 * @hide 1357 */ 1358 public long lastActiveTime; 1359 1360 public RunningTaskInfo() { 1361 } 1362 1363 public int describeContents() { 1364 return 0; 1365 } 1366 1367 public void writeToParcel(Parcel dest, int flags) { 1368 dest.writeInt(id); 1369 dest.writeInt(stackId); 1370 ComponentName.writeToParcel(baseActivity, dest); 1371 ComponentName.writeToParcel(topActivity, dest); 1372 if (thumbnail != null) { 1373 dest.writeInt(1); 1374 thumbnail.writeToParcel(dest, 0); 1375 } else { 1376 dest.writeInt(0); 1377 } 1378 TextUtils.writeToParcel(description, dest, 1379 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1380 dest.writeInt(numActivities); 1381 dest.writeInt(numRunning); 1382 } 1383 1384 public void readFromParcel(Parcel source) { 1385 id = source.readInt(); 1386 stackId = source.readInt(); 1387 baseActivity = ComponentName.readFromParcel(source); 1388 topActivity = ComponentName.readFromParcel(source); 1389 if (source.readInt() != 0) { 1390 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1391 } else { 1392 thumbnail = null; 1393 } 1394 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1395 numActivities = source.readInt(); 1396 numRunning = source.readInt(); 1397 } 1398 1399 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1400 public RunningTaskInfo createFromParcel(Parcel source) { 1401 return new RunningTaskInfo(source); 1402 } 1403 public RunningTaskInfo[] newArray(int size) { 1404 return new RunningTaskInfo[size]; 1405 } 1406 }; 1407 1408 private RunningTaskInfo(Parcel source) { 1409 readFromParcel(source); 1410 } 1411 } 1412 1413 /** 1414 * Get the list of tasks associated with the calling application. 1415 * 1416 * @return The list of tasks associated with the application making this call. 1417 * @throws SecurityException 1418 */ 1419 public List<ActivityManager.AppTask> getAppTasks() { 1420 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1421 List<IAppTask> appTasks; 1422 try { 1423 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1424 } catch (RemoteException e) { 1425 // System dead, we will be dead too soon! 1426 return null; 1427 } 1428 int numAppTasks = appTasks.size(); 1429 for (int i = 0; i < numAppTasks; i++) { 1430 tasks.add(new AppTask(appTasks.get(i))); 1431 } 1432 return tasks; 1433 } 1434 1435 /** 1436 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1437 * with {@link #addAppTask}. 1438 */ 1439 public Size getAppTaskThumbnailSize() { 1440 synchronized (this) { 1441 ensureAppTaskThumbnailSizeLocked(); 1442 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1443 } 1444 } 1445 1446 private void ensureAppTaskThumbnailSizeLocked() { 1447 if (mAppTaskThumbnailSize == null) { 1448 try { 1449 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1450 } catch (RemoteException e) { 1451 throw new IllegalStateException("System dead?", e); 1452 } 1453 } 1454 } 1455 1456 /** 1457 * Add a new {@link AppTask} for the calling application. This will create a new 1458 * recents entry that is added to the <b>end</b> of all existing recents. 1459 * 1460 * @param activity The activity that is adding the entry. This is used to help determine 1461 * the context that the new recents entry will be in. 1462 * @param intent The Intent that describes the recents entry. This is the same Intent that 1463 * you would have used to launch the activity for it. In generally you will want to set 1464 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1465 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1466 * entry will exist without an activity, so it doesn't make sense to not retain it when 1467 * its activity disappears. The given Intent here also must have an explicit ComponentName 1468 * set on it. 1469 * @param description Optional additional description information. 1470 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1471 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1472 * recreated in your process, probably in a way you don't like, before the recents entry 1473 * is added. 1474 * 1475 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1476 * most likely cause of failure is that there is no more room for more tasks for your app. 1477 */ 1478 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1479 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1480 Point size; 1481 synchronized (this) { 1482 ensureAppTaskThumbnailSizeLocked(); 1483 size = mAppTaskThumbnailSize; 1484 } 1485 final int tw = thumbnail.getWidth(); 1486 final int th = thumbnail.getHeight(); 1487 if (tw != size.x || th != size.y) { 1488 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1489 1490 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1491 float scale; 1492 float dx = 0, dy = 0; 1493 if (tw * size.x > size.y * th) { 1494 scale = (float) size.x / (float) th; 1495 dx = (size.y - tw * scale) * 0.5f; 1496 } else { 1497 scale = (float) size.y / (float) tw; 1498 dy = (size.x - th * scale) * 0.5f; 1499 } 1500 Matrix matrix = new Matrix(); 1501 matrix.setScale(scale, scale); 1502 matrix.postTranslate((int) (dx + 0.5f), 0); 1503 1504 Canvas canvas = new Canvas(bm); 1505 canvas.drawBitmap(thumbnail, matrix, null); 1506 canvas.setBitmap(null); 1507 1508 thumbnail = bm; 1509 } 1510 if (description == null) { 1511 description = new TaskDescription(); 1512 } 1513 try { 1514 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1515 intent, description, thumbnail); 1516 } catch (RemoteException e) { 1517 throw new IllegalStateException("System dead?", e); 1518 } 1519 } 1520 1521 /** 1522 * Return a list of the tasks that are currently running, with 1523 * the most recent being first and older ones after in order. Note that 1524 * "running" does not mean any of the task's code is currently loaded or 1525 * activity -- the task may have been frozen by the system, so that it 1526 * can be restarted in its previous state when next brought to the 1527 * foreground. 1528 * 1529 * <p><b>Note: this method is only intended for debugging and presenting 1530 * task management user interfaces</b>. This should never be used for 1531 * core logic in an application, such as deciding between different 1532 * behaviors based on the information found here. Such uses are 1533 * <em>not</em> supported, and will likely break in the future. For 1534 * example, if multiple applications can be actively running at the 1535 * same time, assumptions made about the meaning of the data here for 1536 * purposes of control flow will be incorrect.</p> 1537 * 1538 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1539 * is no longer available to third party 1540 * applications: the introduction of document-centric recents means 1541 * it can leak person information to the caller. For backwards compatibility, 1542 * it will still retu rn a small subset of its data: at least the caller's 1543 * own tasks, and possibly some other tasks 1544 * such as home that are known to not be sensitive. 1545 * 1546 * @param maxNum The maximum number of entries to return in the list. The 1547 * actual number returned may be smaller, depending on how many tasks the 1548 * user has started. 1549 * 1550 * @return Returns a list of RunningTaskInfo records describing each of 1551 * the running tasks. 1552 */ 1553 @Deprecated 1554 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1555 throws SecurityException { 1556 try { 1557 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1558 } catch (RemoteException e) { 1559 // System dead, we will be dead too soon! 1560 return null; 1561 } 1562 } 1563 1564 /** 1565 * Completely remove the given task. 1566 * 1567 * @param taskId Identifier of the task to be removed. 1568 * @return Returns true if the given task was found and removed. 1569 * 1570 * @hide 1571 */ 1572 public boolean removeTask(int taskId) throws SecurityException { 1573 try { 1574 return ActivityManagerNative.getDefault().removeTask(taskId); 1575 } catch (RemoteException e) { 1576 // System dead, we will be dead too soon! 1577 return false; 1578 } 1579 } 1580 1581 /** 1582 * Metadata related to the {@link TaskThumbnail}. 1583 * 1584 * @hide 1585 */ 1586 public static class TaskThumbnailInfo implements Parcelable { 1587 /** @hide */ 1588 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1589 private static final String ATTR_TASK_WIDTH = 1590 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1591 private static final String ATTR_TASK_HEIGHT = 1592 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1593 private static final String ATTR_SCREEN_ORIENTATION = 1594 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1595 1596 public int taskWidth; 1597 public int taskHeight; 1598 public int screenOrientation; 1599 1600 public TaskThumbnailInfo() { 1601 // Do nothing 1602 } 1603 1604 private TaskThumbnailInfo(Parcel source) { 1605 readFromParcel(source); 1606 } 1607 1608 /** 1609 * Resets this info state to the initial state. 1610 * @hide 1611 */ 1612 public void reset() { 1613 taskWidth = 0; 1614 taskHeight = 0; 1615 screenOrientation = 0; 1616 } 1617 1618 /** @hide */ 1619 public void saveToXml(XmlSerializer out) throws IOException { 1620 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1621 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1622 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1623 } 1624 1625 /** @hide */ 1626 public void restoreFromXml(String attrName, String attrValue) { 1627 if (ATTR_TASK_WIDTH.equals(attrName)) { 1628 taskWidth = Integer.parseInt(attrValue); 1629 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1630 taskHeight = Integer.parseInt(attrValue); 1631 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1632 screenOrientation = Integer.parseInt(attrValue); 1633 } 1634 } 1635 1636 public int describeContents() { 1637 return 0; 1638 } 1639 1640 public void writeToParcel(Parcel dest, int flags) { 1641 dest.writeInt(taskWidth); 1642 dest.writeInt(taskHeight); 1643 dest.writeInt(screenOrientation); 1644 } 1645 1646 public void readFromParcel(Parcel source) { 1647 taskWidth = source.readInt(); 1648 taskHeight = source.readInt(); 1649 screenOrientation = source.readInt(); 1650 } 1651 1652 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1653 public TaskThumbnailInfo createFromParcel(Parcel source) { 1654 return new TaskThumbnailInfo(source); 1655 } 1656 public TaskThumbnailInfo[] newArray(int size) { 1657 return new TaskThumbnailInfo[size]; 1658 } 1659 }; 1660 } 1661 1662 /** @hide */ 1663 public static class TaskThumbnail implements Parcelable { 1664 public Bitmap mainThumbnail; 1665 public ParcelFileDescriptor thumbnailFileDescriptor; 1666 public TaskThumbnailInfo thumbnailInfo; 1667 1668 public TaskThumbnail() { 1669 } 1670 1671 private TaskThumbnail(Parcel source) { 1672 readFromParcel(source); 1673 } 1674 1675 public int describeContents() { 1676 if (thumbnailFileDescriptor != null) { 1677 return thumbnailFileDescriptor.describeContents(); 1678 } 1679 return 0; 1680 } 1681 1682 public void writeToParcel(Parcel dest, int flags) { 1683 if (mainThumbnail != null) { 1684 dest.writeInt(1); 1685 mainThumbnail.writeToParcel(dest, flags); 1686 } else { 1687 dest.writeInt(0); 1688 } 1689 if (thumbnailFileDescriptor != null) { 1690 dest.writeInt(1); 1691 thumbnailFileDescriptor.writeToParcel(dest, flags); 1692 } else { 1693 dest.writeInt(0); 1694 } 1695 if (thumbnailInfo != null) { 1696 dest.writeInt(1); 1697 thumbnailInfo.writeToParcel(dest, flags); 1698 } else { 1699 dest.writeInt(0); 1700 } 1701 } 1702 1703 public void readFromParcel(Parcel source) { 1704 if (source.readInt() != 0) { 1705 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1706 } else { 1707 mainThumbnail = null; 1708 } 1709 if (source.readInt() != 0) { 1710 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1711 } else { 1712 thumbnailFileDescriptor = null; 1713 } 1714 if (source.readInt() != 0) { 1715 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1716 } else { 1717 thumbnailInfo = null; 1718 } 1719 } 1720 1721 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1722 public TaskThumbnail createFromParcel(Parcel source) { 1723 return new TaskThumbnail(source); 1724 } 1725 public TaskThumbnail[] newArray(int size) { 1726 return new TaskThumbnail[size]; 1727 } 1728 }; 1729 } 1730 1731 /** @hide */ 1732 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1733 try { 1734 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1735 } catch (RemoteException e) { 1736 // System dead, we will be dead too soon! 1737 return null; 1738 } 1739 } 1740 1741 /** @hide */ 1742 public boolean isInHomeStack(int taskId) { 1743 try { 1744 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1745 } catch (RemoteException e) { 1746 // System dead, we will be dead too soon! 1747 return false; 1748 } 1749 } 1750 1751 /** 1752 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1753 * activity along with the task, so it is positioned immediately behind 1754 * the task. 1755 */ 1756 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1757 1758 /** 1759 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1760 * user-instigated action, so the current activity will not receive a 1761 * hint that the user is leaving. 1762 */ 1763 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1764 1765 /** 1766 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1767 * with a null options argument. 1768 * 1769 * @param taskId The identifier of the task to be moved, as found in 1770 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1771 * @param flags Additional operational flags, 0 or more of 1772 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1773 */ 1774 public void moveTaskToFront(int taskId, int flags) { 1775 moveTaskToFront(taskId, flags, null); 1776 } 1777 1778 /** 1779 * Ask that the task associated with a given task ID be moved to the 1780 * front of the stack, so it is now visible to the user. Requires that 1781 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1782 * or a SecurityException will be thrown. 1783 * 1784 * @param taskId The identifier of the task to be moved, as found in 1785 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1786 * @param flags Additional operational flags, 0 or more of 1787 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1788 * @param options Additional options for the operation, either null or 1789 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1790 * Context.startActivity(Intent, Bundle)}. 1791 */ 1792 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1793 try { 1794 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1795 } catch (RemoteException e) { 1796 // System dead, we will be dead too soon! 1797 } 1798 } 1799 1800 /** 1801 * Information you can retrieve about a particular Service that is 1802 * currently running in the system. 1803 */ 1804 public static class RunningServiceInfo implements Parcelable { 1805 /** 1806 * The service component. 1807 */ 1808 public ComponentName service; 1809 1810 /** 1811 * If non-zero, this is the process the service is running in. 1812 */ 1813 public int pid; 1814 1815 /** 1816 * The UID that owns this service. 1817 */ 1818 public int uid; 1819 1820 /** 1821 * The name of the process this service runs in. 1822 */ 1823 public String process; 1824 1825 /** 1826 * Set to true if the service has asked to run as a foreground process. 1827 */ 1828 public boolean foreground; 1829 1830 /** 1831 * The time when the service was first made active, either by someone 1832 * starting or binding to it. This 1833 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1834 */ 1835 public long activeSince; 1836 1837 /** 1838 * Set to true if this service has been explicitly started. 1839 */ 1840 public boolean started; 1841 1842 /** 1843 * Number of clients connected to the service. 1844 */ 1845 public int clientCount; 1846 1847 /** 1848 * Number of times the service's process has crashed while the service 1849 * is running. 1850 */ 1851 public int crashCount; 1852 1853 /** 1854 * The time when there was last activity in the service (either 1855 * explicit requests to start it or clients binding to it). This 1856 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1857 */ 1858 public long lastActivityTime; 1859 1860 /** 1861 * If non-zero, this service is not currently running, but scheduled to 1862 * restart at the given time. 1863 */ 1864 public long restarting; 1865 1866 /** 1867 * Bit for {@link #flags}: set if this service has been 1868 * explicitly started. 1869 */ 1870 public static final int FLAG_STARTED = 1<<0; 1871 1872 /** 1873 * Bit for {@link #flags}: set if the service has asked to 1874 * run as a foreground process. 1875 */ 1876 public static final int FLAG_FOREGROUND = 1<<1; 1877 1878 /** 1879 * Bit for {@link #flags): set if the service is running in a 1880 * core system process. 1881 */ 1882 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1883 1884 /** 1885 * Bit for {@link #flags): set if the service is running in a 1886 * persistent process. 1887 */ 1888 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1889 1890 /** 1891 * Running flags. 1892 */ 1893 public int flags; 1894 1895 /** 1896 * For special services that are bound to by system code, this is 1897 * the package that holds the binding. 1898 */ 1899 public String clientPackage; 1900 1901 /** 1902 * For special services that are bound to by system code, this is 1903 * a string resource providing a user-visible label for who the 1904 * client is. 1905 */ 1906 public int clientLabel; 1907 1908 public RunningServiceInfo() { 1909 } 1910 1911 public int describeContents() { 1912 return 0; 1913 } 1914 1915 public void writeToParcel(Parcel dest, int flags) { 1916 ComponentName.writeToParcel(service, dest); 1917 dest.writeInt(pid); 1918 dest.writeInt(uid); 1919 dest.writeString(process); 1920 dest.writeInt(foreground ? 1 : 0); 1921 dest.writeLong(activeSince); 1922 dest.writeInt(started ? 1 : 0); 1923 dest.writeInt(clientCount); 1924 dest.writeInt(crashCount); 1925 dest.writeLong(lastActivityTime); 1926 dest.writeLong(restarting); 1927 dest.writeInt(this.flags); 1928 dest.writeString(clientPackage); 1929 dest.writeInt(clientLabel); 1930 } 1931 1932 public void readFromParcel(Parcel source) { 1933 service = ComponentName.readFromParcel(source); 1934 pid = source.readInt(); 1935 uid = source.readInt(); 1936 process = source.readString(); 1937 foreground = source.readInt() != 0; 1938 activeSince = source.readLong(); 1939 started = source.readInt() != 0; 1940 clientCount = source.readInt(); 1941 crashCount = source.readInt(); 1942 lastActivityTime = source.readLong(); 1943 restarting = source.readLong(); 1944 flags = source.readInt(); 1945 clientPackage = source.readString(); 1946 clientLabel = source.readInt(); 1947 } 1948 1949 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1950 public RunningServiceInfo createFromParcel(Parcel source) { 1951 return new RunningServiceInfo(source); 1952 } 1953 public RunningServiceInfo[] newArray(int size) { 1954 return new RunningServiceInfo[size]; 1955 } 1956 }; 1957 1958 private RunningServiceInfo(Parcel source) { 1959 readFromParcel(source); 1960 } 1961 } 1962 1963 /** 1964 * Return a list of the services that are currently running. 1965 * 1966 * <p><b>Note: this method is only intended for debugging or implementing 1967 * service management type user interfaces.</b></p> 1968 * 1969 * @param maxNum The maximum number of entries to return in the list. The 1970 * actual number returned may be smaller, depending on how many services 1971 * are running. 1972 * 1973 * @return Returns a list of RunningServiceInfo records describing each of 1974 * the running tasks. 1975 */ 1976 public List<RunningServiceInfo> getRunningServices(int maxNum) 1977 throws SecurityException { 1978 try { 1979 return ActivityManagerNative.getDefault() 1980 .getServices(maxNum, 0); 1981 } catch (RemoteException e) { 1982 // System dead, we will be dead too soon! 1983 return null; 1984 } 1985 } 1986 1987 /** 1988 * Returns a PendingIntent you can start to show a control panel for the 1989 * given running service. If the service does not have a control panel, 1990 * null is returned. 1991 */ 1992 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1993 throws SecurityException { 1994 try { 1995 return ActivityManagerNative.getDefault() 1996 .getRunningServiceControlPanel(service); 1997 } catch (RemoteException e) { 1998 // System dead, we will be dead too soon! 1999 return null; 2000 } 2001 } 2002 2003 /** 2004 * Information you can retrieve about the available memory through 2005 * {@link ActivityManager#getMemoryInfo}. 2006 */ 2007 public static class MemoryInfo implements Parcelable { 2008 /** 2009 * The available memory on the system. This number should not 2010 * be considered absolute: due to the nature of the kernel, a significant 2011 * portion of this memory is actually in use and needed for the overall 2012 * system to run well. 2013 */ 2014 public long availMem; 2015 2016 /** 2017 * The total memory accessible by the kernel. This is basically the 2018 * RAM size of the device, not including below-kernel fixed allocations 2019 * like DMA buffers, RAM for the baseband CPU, etc. 2020 */ 2021 public long totalMem; 2022 2023 /** 2024 * The threshold of {@link #availMem} at which we consider memory to be 2025 * low and start killing background services and other non-extraneous 2026 * processes. 2027 */ 2028 public long threshold; 2029 2030 /** 2031 * Set to true if the system considers itself to currently be in a low 2032 * memory situation. 2033 */ 2034 public boolean lowMemory; 2035 2036 /** @hide */ 2037 public long hiddenAppThreshold; 2038 /** @hide */ 2039 public long secondaryServerThreshold; 2040 /** @hide */ 2041 public long visibleAppThreshold; 2042 /** @hide */ 2043 public long foregroundAppThreshold; 2044 2045 public MemoryInfo() { 2046 } 2047 2048 public int describeContents() { 2049 return 0; 2050 } 2051 2052 public void writeToParcel(Parcel dest, int flags) { 2053 dest.writeLong(availMem); 2054 dest.writeLong(totalMem); 2055 dest.writeLong(threshold); 2056 dest.writeInt(lowMemory ? 1 : 0); 2057 dest.writeLong(hiddenAppThreshold); 2058 dest.writeLong(secondaryServerThreshold); 2059 dest.writeLong(visibleAppThreshold); 2060 dest.writeLong(foregroundAppThreshold); 2061 } 2062 2063 public void readFromParcel(Parcel source) { 2064 availMem = source.readLong(); 2065 totalMem = source.readLong(); 2066 threshold = source.readLong(); 2067 lowMemory = source.readInt() != 0; 2068 hiddenAppThreshold = source.readLong(); 2069 secondaryServerThreshold = source.readLong(); 2070 visibleAppThreshold = source.readLong(); 2071 foregroundAppThreshold = source.readLong(); 2072 } 2073 2074 public static final Creator<MemoryInfo> CREATOR 2075 = new Creator<MemoryInfo>() { 2076 public MemoryInfo createFromParcel(Parcel source) { 2077 return new MemoryInfo(source); 2078 } 2079 public MemoryInfo[] newArray(int size) { 2080 return new MemoryInfo[size]; 2081 } 2082 }; 2083 2084 private MemoryInfo(Parcel source) { 2085 readFromParcel(source); 2086 } 2087 } 2088 2089 /** 2090 * Return general information about the memory state of the system. This 2091 * can be used to help decide how to manage your own memory, though note 2092 * that polling is not recommended and 2093 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2094 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2095 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2096 * level of your process as needed, which gives a better hint for how to 2097 * manage its memory. 2098 */ 2099 public void getMemoryInfo(MemoryInfo outInfo) { 2100 try { 2101 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2102 } catch (RemoteException e) { 2103 } 2104 } 2105 2106 /** 2107 * Information you can retrieve about an ActivityStack in the system. 2108 * @hide 2109 */ 2110 public static class StackInfo implements Parcelable { 2111 public int stackId; 2112 public Rect bounds = new Rect(); 2113 public int[] taskIds; 2114 public String[] taskNames; 2115 public Rect[] taskBounds; 2116 public int displayId; 2117 2118 @Override 2119 public int describeContents() { 2120 return 0; 2121 } 2122 2123 @Override 2124 public void writeToParcel(Parcel dest, int flags) { 2125 dest.writeInt(stackId); 2126 dest.writeInt(bounds.left); 2127 dest.writeInt(bounds.top); 2128 dest.writeInt(bounds.right); 2129 dest.writeInt(bounds.bottom); 2130 dest.writeIntArray(taskIds); 2131 dest.writeStringArray(taskNames); 2132 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2133 dest.writeInt(boundsCount); 2134 for (int i = 0; i < boundsCount; i++) { 2135 dest.writeInt(taskBounds[i].left); 2136 dest.writeInt(taskBounds[i].top); 2137 dest.writeInt(taskBounds[i].right); 2138 dest.writeInt(taskBounds[i].bottom); 2139 } 2140 dest.writeInt(displayId); 2141 } 2142 2143 public void readFromParcel(Parcel source) { 2144 stackId = source.readInt(); 2145 bounds = new Rect( 2146 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2147 taskIds = source.createIntArray(); 2148 taskNames = source.createStringArray(); 2149 final int boundsCount = source.readInt(); 2150 if (boundsCount > 0) { 2151 taskBounds = new Rect[boundsCount]; 2152 for (int i = 0; i < boundsCount; i++) { 2153 taskBounds[i] = new Rect(); 2154 taskBounds[i].set( 2155 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2156 } 2157 } else { 2158 taskBounds = null; 2159 } 2160 displayId = source.readInt(); 2161 } 2162 2163 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2164 @Override 2165 public StackInfo createFromParcel(Parcel source) { 2166 return new StackInfo(source); 2167 } 2168 @Override 2169 public StackInfo[] newArray(int size) { 2170 return new StackInfo[size]; 2171 } 2172 }; 2173 2174 public StackInfo() { 2175 } 2176 2177 private StackInfo(Parcel source) { 2178 readFromParcel(source); 2179 } 2180 2181 public String toString(String prefix) { 2182 StringBuilder sb = new StringBuilder(256); 2183 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2184 sb.append(" bounds="); sb.append(bounds.toShortString()); 2185 sb.append(" displayId="); sb.append(displayId); 2186 sb.append("\n"); 2187 prefix = prefix + " "; 2188 for (int i = 0; i < taskIds.length; ++i) { 2189 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2190 sb.append(": "); sb.append(taskNames[i]); 2191 if (taskBounds != null) { 2192 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2193 } 2194 sb.append("\n"); 2195 } 2196 return sb.toString(); 2197 } 2198 2199 @Override 2200 public String toString() { 2201 return toString(""); 2202 } 2203 } 2204 2205 /** 2206 * @hide 2207 */ 2208 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2209 try { 2210 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2211 observer, UserHandle.myUserId()); 2212 } catch (RemoteException e) { 2213 return false; 2214 } 2215 } 2216 2217 /** 2218 * Permits an application to erase its own data from disk. This is equivalent to 2219 * the user choosing to clear the app's data from within the device settings UI. It 2220 * erases all dynamic data associated with the app -- its private data and data in its 2221 * private area on external storage -- but does not remove the installed application 2222 * itself, nor any OBB files. 2223 * 2224 * @return {@code true} if the application successfully requested that the application's 2225 * data be erased; {@code false} otherwise. 2226 */ 2227 public boolean clearApplicationUserData() { 2228 return clearApplicationUserData(mContext.getPackageName(), null); 2229 } 2230 2231 /** 2232 * Information you can retrieve about any processes that are in an error condition. 2233 */ 2234 public static class ProcessErrorStateInfo implements Parcelable { 2235 /** 2236 * Condition codes 2237 */ 2238 public static final int NO_ERROR = 0; 2239 public static final int CRASHED = 1; 2240 public static final int NOT_RESPONDING = 2; 2241 2242 /** 2243 * The condition that the process is in. 2244 */ 2245 public int condition; 2246 2247 /** 2248 * The process name in which the crash or error occurred. 2249 */ 2250 public String processName; 2251 2252 /** 2253 * The pid of this process; 0 if none 2254 */ 2255 public int pid; 2256 2257 /** 2258 * The kernel user-ID that has been assigned to this process; 2259 * currently this is not a unique ID (multiple applications can have 2260 * the same uid). 2261 */ 2262 public int uid; 2263 2264 /** 2265 * The activity name associated with the error, if known. May be null. 2266 */ 2267 public String tag; 2268 2269 /** 2270 * A short message describing the error condition. 2271 */ 2272 public String shortMsg; 2273 2274 /** 2275 * A long message describing the error condition. 2276 */ 2277 public String longMsg; 2278 2279 /** 2280 * The stack trace where the error originated. May be null. 2281 */ 2282 public String stackTrace; 2283 2284 /** 2285 * to be deprecated: This value will always be null. 2286 */ 2287 public byte[] crashData = null; 2288 2289 public ProcessErrorStateInfo() { 2290 } 2291 2292 @Override 2293 public int describeContents() { 2294 return 0; 2295 } 2296 2297 @Override 2298 public void writeToParcel(Parcel dest, int flags) { 2299 dest.writeInt(condition); 2300 dest.writeString(processName); 2301 dest.writeInt(pid); 2302 dest.writeInt(uid); 2303 dest.writeString(tag); 2304 dest.writeString(shortMsg); 2305 dest.writeString(longMsg); 2306 dest.writeString(stackTrace); 2307 } 2308 2309 public void readFromParcel(Parcel source) { 2310 condition = source.readInt(); 2311 processName = source.readString(); 2312 pid = source.readInt(); 2313 uid = source.readInt(); 2314 tag = source.readString(); 2315 shortMsg = source.readString(); 2316 longMsg = source.readString(); 2317 stackTrace = source.readString(); 2318 } 2319 2320 public static final Creator<ProcessErrorStateInfo> CREATOR = 2321 new Creator<ProcessErrorStateInfo>() { 2322 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2323 return new ProcessErrorStateInfo(source); 2324 } 2325 public ProcessErrorStateInfo[] newArray(int size) { 2326 return new ProcessErrorStateInfo[size]; 2327 } 2328 }; 2329 2330 private ProcessErrorStateInfo(Parcel source) { 2331 readFromParcel(source); 2332 } 2333 } 2334 2335 /** 2336 * Returns a list of any processes that are currently in an error condition. The result 2337 * will be null if all processes are running properly at this time. 2338 * 2339 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2340 * current error conditions (it will not return an empty list). This list ordering is not 2341 * specified. 2342 */ 2343 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2344 try { 2345 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2346 } catch (RemoteException e) { 2347 return null; 2348 } 2349 } 2350 2351 /** 2352 * Information you can retrieve about a running process. 2353 */ 2354 public static class RunningAppProcessInfo implements Parcelable { 2355 /** 2356 * The name of the process that this object is associated with 2357 */ 2358 public String processName; 2359 2360 /** 2361 * The pid of this process; 0 if none 2362 */ 2363 public int pid; 2364 2365 /** 2366 * The user id of this process. 2367 */ 2368 public int uid; 2369 2370 /** 2371 * All packages that have been loaded into the process. 2372 */ 2373 public String pkgList[]; 2374 2375 /** 2376 * Constant for {@link #flags}: this is an app that is unable to 2377 * correctly save its state when going to the background, 2378 * so it can not be killed while in the background. 2379 * @hide 2380 */ 2381 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2382 2383 /** 2384 * Constant for {@link #flags}: this process is associated with a 2385 * persistent system app. 2386 * @hide 2387 */ 2388 public static final int FLAG_PERSISTENT = 1<<1; 2389 2390 /** 2391 * Constant for {@link #flags}: this process is associated with a 2392 * persistent system app. 2393 * @hide 2394 */ 2395 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2396 2397 /** 2398 * Flags of information. May be any of 2399 * {@link #FLAG_CANT_SAVE_STATE}. 2400 * @hide 2401 */ 2402 public int flags; 2403 2404 /** 2405 * Last memory trim level reported to the process: corresponds to 2406 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2407 * ComponentCallbacks2.onTrimMemory(int)}. 2408 */ 2409 public int lastTrimLevel; 2410 2411 /** 2412 * Constant for {@link #importance}: This process is running the 2413 * foreground UI; that is, it is the thing currently at the top of the screen 2414 * that the user is interacting with. 2415 */ 2416 public static final int IMPORTANCE_FOREGROUND = 100; 2417 2418 /** 2419 * Constant for {@link #importance}: This process is running a foreground 2420 * service, for example to perform music playback even while the user is 2421 * not immediately in the app. This generally indicates that the process 2422 * is doing something the user actively cares about. 2423 */ 2424 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2425 2426 /** 2427 * Constant for {@link #importance}: This process is running the foreground 2428 * UI, but the device is asleep so it is not visible to the user. This means 2429 * the user is not really aware of the process, because they can not see or 2430 * interact with it, but it is quite important because it what they expect to 2431 * return to once unlocking the device. 2432 */ 2433 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2434 2435 /** 2436 * Constant for {@link #importance}: This process is running something 2437 * that is actively visible to the user, though not in the immediate 2438 * foreground. This may be running a window that is behind the current 2439 * foreground (so paused and with its state saved, not interacting with 2440 * the user, but visible to them to some degree); it may also be running 2441 * other services under the system's control that it inconsiders important. 2442 */ 2443 public static final int IMPORTANCE_VISIBLE = 200; 2444 2445 /** 2446 * Constant for {@link #importance}: This process is not something the user 2447 * is directly aware of, but is otherwise perceptable to them to some degree. 2448 */ 2449 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2450 2451 /** 2452 * Constant for {@link #importance}: This process is running an 2453 * application that can not save its state, and thus can't be killed 2454 * while in the background. 2455 * @hide 2456 */ 2457 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2458 2459 /** 2460 * Constant for {@link #importance}: This process is contains services 2461 * that should remain running. These are background services apps have 2462 * started, not something the user is aware of, so they may be killed by 2463 * the system relatively freely (though it is generally desired that they 2464 * stay running as long as they want to). 2465 */ 2466 public static final int IMPORTANCE_SERVICE = 300; 2467 2468 /** 2469 * Constant for {@link #importance}: This process process contains 2470 * background code that is expendable. 2471 */ 2472 public static final int IMPORTANCE_BACKGROUND = 400; 2473 2474 /** 2475 * Constant for {@link #importance}: This process is empty of any 2476 * actively running code. 2477 */ 2478 public static final int IMPORTANCE_EMPTY = 500; 2479 2480 /** 2481 * Constant for {@link #importance}: This process does not exist. 2482 */ 2483 public static final int IMPORTANCE_GONE = 1000; 2484 2485 /** @hide */ 2486 public static int procStateToImportance(int procState) { 2487 if (procState == PROCESS_STATE_NONEXISTENT) { 2488 return IMPORTANCE_GONE; 2489 } else if (procState >= PROCESS_STATE_HOME) { 2490 return IMPORTANCE_BACKGROUND; 2491 } else if (procState >= PROCESS_STATE_SERVICE) { 2492 return IMPORTANCE_SERVICE; 2493 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2494 return IMPORTANCE_CANT_SAVE_STATE; 2495 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2496 return IMPORTANCE_PERCEPTIBLE; 2497 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2498 return IMPORTANCE_VISIBLE; 2499 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2500 return IMPORTANCE_TOP_SLEEPING; 2501 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2502 return IMPORTANCE_FOREGROUND_SERVICE; 2503 } else { 2504 return IMPORTANCE_FOREGROUND; 2505 } 2506 } 2507 2508 /** 2509 * The relative importance level that the system places on this 2510 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2511 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2512 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2513 * constants are numbered so that "more important" values are always 2514 * smaller than "less important" values. 2515 */ 2516 public int importance; 2517 2518 /** 2519 * An additional ordering within a particular {@link #importance} 2520 * category, providing finer-grained information about the relative 2521 * utility of processes within a category. This number means nothing 2522 * except that a smaller values are more recently used (and thus 2523 * more important). Currently an LRU value is only maintained for 2524 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2525 * be maintained in the future. 2526 */ 2527 public int lru; 2528 2529 /** 2530 * Constant for {@link #importanceReasonCode}: nothing special has 2531 * been specified for the reason for this level. 2532 */ 2533 public static final int REASON_UNKNOWN = 0; 2534 2535 /** 2536 * Constant for {@link #importanceReasonCode}: one of the application's 2537 * content providers is being used by another process. The pid of 2538 * the client process is in {@link #importanceReasonPid} and the 2539 * target provider in this process is in 2540 * {@link #importanceReasonComponent}. 2541 */ 2542 public static final int REASON_PROVIDER_IN_USE = 1; 2543 2544 /** 2545 * Constant for {@link #importanceReasonCode}: one of the application's 2546 * content providers is being used by another process. The pid of 2547 * the client process is in {@link #importanceReasonPid} and the 2548 * target provider in this process is in 2549 * {@link #importanceReasonComponent}. 2550 */ 2551 public static final int REASON_SERVICE_IN_USE = 2; 2552 2553 /** 2554 * The reason for {@link #importance}, if any. 2555 */ 2556 public int importanceReasonCode; 2557 2558 /** 2559 * For the specified values of {@link #importanceReasonCode}, this 2560 * is the process ID of the other process that is a client of this 2561 * process. This will be 0 if no other process is using this one. 2562 */ 2563 public int importanceReasonPid; 2564 2565 /** 2566 * For the specified values of {@link #importanceReasonCode}, this 2567 * is the name of the component that is being used in this process. 2568 */ 2569 public ComponentName importanceReasonComponent; 2570 2571 /** 2572 * When {@link #importanceReasonPid} is non-0, this is the importance 2573 * of the other pid. @hide 2574 */ 2575 public int importanceReasonImportance; 2576 2577 /** 2578 * Current process state, as per PROCESS_STATE_* constants. 2579 * @hide 2580 */ 2581 public int processState; 2582 2583 public RunningAppProcessInfo() { 2584 importance = IMPORTANCE_FOREGROUND; 2585 importanceReasonCode = REASON_UNKNOWN; 2586 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2587 } 2588 2589 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2590 processName = pProcessName; 2591 pid = pPid; 2592 pkgList = pArr; 2593 } 2594 2595 public int describeContents() { 2596 return 0; 2597 } 2598 2599 public void writeToParcel(Parcel dest, int flags) { 2600 dest.writeString(processName); 2601 dest.writeInt(pid); 2602 dest.writeInt(uid); 2603 dest.writeStringArray(pkgList); 2604 dest.writeInt(this.flags); 2605 dest.writeInt(lastTrimLevel); 2606 dest.writeInt(importance); 2607 dest.writeInt(lru); 2608 dest.writeInt(importanceReasonCode); 2609 dest.writeInt(importanceReasonPid); 2610 ComponentName.writeToParcel(importanceReasonComponent, dest); 2611 dest.writeInt(importanceReasonImportance); 2612 dest.writeInt(processState); 2613 } 2614 2615 public void readFromParcel(Parcel source) { 2616 processName = source.readString(); 2617 pid = source.readInt(); 2618 uid = source.readInt(); 2619 pkgList = source.readStringArray(); 2620 flags = source.readInt(); 2621 lastTrimLevel = source.readInt(); 2622 importance = source.readInt(); 2623 lru = source.readInt(); 2624 importanceReasonCode = source.readInt(); 2625 importanceReasonPid = source.readInt(); 2626 importanceReasonComponent = ComponentName.readFromParcel(source); 2627 importanceReasonImportance = source.readInt(); 2628 processState = source.readInt(); 2629 } 2630 2631 public static final Creator<RunningAppProcessInfo> CREATOR = 2632 new Creator<RunningAppProcessInfo>() { 2633 public RunningAppProcessInfo createFromParcel(Parcel source) { 2634 return new RunningAppProcessInfo(source); 2635 } 2636 public RunningAppProcessInfo[] newArray(int size) { 2637 return new RunningAppProcessInfo[size]; 2638 } 2639 }; 2640 2641 private RunningAppProcessInfo(Parcel source) { 2642 readFromParcel(source); 2643 } 2644 } 2645 2646 /** 2647 * Returns a list of application processes installed on external media 2648 * that are running on the device. 2649 * 2650 * <p><b>Note: this method is only intended for debugging or building 2651 * a user-facing process management UI.</b></p> 2652 * 2653 * @return Returns a list of ApplicationInfo records, or null if none 2654 * This list ordering is not specified. 2655 * @hide 2656 */ 2657 public List<ApplicationInfo> getRunningExternalApplications() { 2658 try { 2659 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2660 } catch (RemoteException e) { 2661 return null; 2662 } 2663 } 2664 2665 /** 2666 * Sets the memory trim mode for a process and schedules a memory trim operation. 2667 * 2668 * <p><b>Note: this method is only intended for testing framework.</b></p> 2669 * 2670 * @return Returns true if successful. 2671 * @hide 2672 */ 2673 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2674 try { 2675 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2676 level); 2677 } catch (RemoteException e) { 2678 return false; 2679 } 2680 } 2681 2682 /** 2683 * Returns a list of application processes that are running on the device. 2684 * 2685 * <p><b>Note: this method is only intended for debugging or building 2686 * a user-facing process management UI.</b></p> 2687 * 2688 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2689 * running processes (it will not return an empty list). This list ordering is not 2690 * specified. 2691 */ 2692 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2693 try { 2694 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2695 } catch (RemoteException e) { 2696 return null; 2697 } 2698 } 2699 2700 /** 2701 * Return the importance of a given package name, based on the processes that are 2702 * currently running. The return value is one of the importance constants defined 2703 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2704 * processes that this package has code running inside of. If there are no processes 2705 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2706 * @hide 2707 */ 2708 @SystemApi 2709 public int getPackageImportance(String packageName) { 2710 try { 2711 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2712 mContext.getOpPackageName()); 2713 return RunningAppProcessInfo.procStateToImportance(procState); 2714 } catch (RemoteException e) { 2715 return RunningAppProcessInfo.IMPORTANCE_GONE; 2716 } 2717 } 2718 2719 /** 2720 * Return global memory state information for the calling process. This 2721 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2722 * only fields that will be filled in are 2723 * {@link RunningAppProcessInfo#pid}, 2724 * {@link RunningAppProcessInfo#uid}, 2725 * {@link RunningAppProcessInfo#lastTrimLevel}, 2726 * {@link RunningAppProcessInfo#importance}, 2727 * {@link RunningAppProcessInfo#lru}, and 2728 * {@link RunningAppProcessInfo#importanceReasonCode}. 2729 */ 2730 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2731 try { 2732 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2733 } catch (RemoteException e) { 2734 } 2735 } 2736 2737 /** 2738 * Return information about the memory usage of one or more processes. 2739 * 2740 * <p><b>Note: this method is only intended for debugging or building 2741 * a user-facing process management UI.</b></p> 2742 * 2743 * @param pids The pids of the processes whose memory usage is to be 2744 * retrieved. 2745 * @return Returns an array of memory information, one for each 2746 * requested pid. 2747 */ 2748 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2749 try { 2750 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2751 } catch (RemoteException e) { 2752 return null; 2753 } 2754 } 2755 2756 /** 2757 * @deprecated This is now just a wrapper for 2758 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2759 * is no longer available to applications because it allows them to 2760 * break other applications by removing their alarms, stopping their 2761 * services, etc. 2762 */ 2763 @Deprecated 2764 public void restartPackage(String packageName) { 2765 killBackgroundProcesses(packageName); 2766 } 2767 2768 /** 2769 * Have the system immediately kill all background processes associated 2770 * with the given package. This is the same as the kernel killing those 2771 * processes to reclaim memory; the system will take care of restarting 2772 * these processes in the future as needed. 2773 * 2774 * <p>You must hold the permission 2775 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2776 * call this method. 2777 * 2778 * @param packageName The name of the package whose processes are to 2779 * be killed. 2780 */ 2781 public void killBackgroundProcesses(String packageName) { 2782 try { 2783 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2784 UserHandle.myUserId()); 2785 } catch (RemoteException e) { 2786 } 2787 } 2788 2789 /** 2790 * Kills the specified UID. 2791 * @param uid The UID to kill. 2792 * @param reason The reason for the kill. 2793 * 2794 * @hide 2795 */ 2796 @RequiresPermission(Manifest.permission.KILL_UID) 2797 public void killUid(int uid, String reason) { 2798 try { 2799 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2800 UserHandle.getUserId(uid), reason); 2801 } catch (RemoteException e) { 2802 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2803 } 2804 } 2805 2806 /** 2807 * Have the system perform a force stop of everything associated with 2808 * the given application package. All processes that share its uid 2809 * will be killed, all services it has running stopped, all activities 2810 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2811 * broadcast will be sent, so that any of its registered alarms can 2812 * be stopped, notifications removed, etc. 2813 * 2814 * <p>You must hold the permission 2815 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2816 * call this method. 2817 * 2818 * @param packageName The name of the package to be stopped. 2819 * @param userId The user for which the running package is to be stopped. 2820 * 2821 * @hide This is not available to third party applications due to 2822 * it allowing them to break other applications by stopping their 2823 * services, removing their alarms, etc. 2824 */ 2825 public void forceStopPackageAsUser(String packageName, int userId) { 2826 try { 2827 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2828 } catch (RemoteException e) { 2829 } 2830 } 2831 2832 /** 2833 * @see #forceStopPackageAsUser(String, int) 2834 * @hide 2835 */ 2836 public void forceStopPackage(String packageName) { 2837 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2838 } 2839 2840 /** 2841 * Get the device configuration attributes. 2842 */ 2843 public ConfigurationInfo getDeviceConfigurationInfo() { 2844 try { 2845 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2846 } catch (RemoteException e) { 2847 } 2848 return null; 2849 } 2850 2851 /** 2852 * Get the preferred density of icons for the launcher. This is used when 2853 * custom drawables are created (e.g., for shortcuts). 2854 * 2855 * @return density in terms of DPI 2856 */ 2857 public int getLauncherLargeIconDensity() { 2858 final Resources res = mContext.getResources(); 2859 final int density = res.getDisplayMetrics().densityDpi; 2860 final int sw = res.getConfiguration().smallestScreenWidthDp; 2861 2862 if (sw < 600) { 2863 // Smaller than approx 7" tablets, use the regular icon size. 2864 return density; 2865 } 2866 2867 switch (density) { 2868 case DisplayMetrics.DENSITY_LOW: 2869 return DisplayMetrics.DENSITY_MEDIUM; 2870 case DisplayMetrics.DENSITY_MEDIUM: 2871 return DisplayMetrics.DENSITY_HIGH; 2872 case DisplayMetrics.DENSITY_TV: 2873 return DisplayMetrics.DENSITY_XHIGH; 2874 case DisplayMetrics.DENSITY_HIGH: 2875 return DisplayMetrics.DENSITY_XHIGH; 2876 case DisplayMetrics.DENSITY_XHIGH: 2877 return DisplayMetrics.DENSITY_XXHIGH; 2878 case DisplayMetrics.DENSITY_XXHIGH: 2879 return DisplayMetrics.DENSITY_XHIGH * 2; 2880 default: 2881 // The density is some abnormal value. Return some other 2882 // abnormal value that is a reasonable scaling of it. 2883 return (int)((density*1.5f)+.5f); 2884 } 2885 } 2886 2887 /** 2888 * Get the preferred launcher icon size. This is used when custom drawables 2889 * are created (e.g., for shortcuts). 2890 * 2891 * @return dimensions of square icons in terms of pixels 2892 */ 2893 public int getLauncherLargeIconSize() { 2894 return getLauncherLargeIconSizeInner(mContext); 2895 } 2896 2897 static int getLauncherLargeIconSizeInner(Context context) { 2898 final Resources res = context.getResources(); 2899 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2900 final int sw = res.getConfiguration().smallestScreenWidthDp; 2901 2902 if (sw < 600) { 2903 // Smaller than approx 7" tablets, use the regular icon size. 2904 return size; 2905 } 2906 2907 final int density = res.getDisplayMetrics().densityDpi; 2908 2909 switch (density) { 2910 case DisplayMetrics.DENSITY_LOW: 2911 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2912 case DisplayMetrics.DENSITY_MEDIUM: 2913 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2914 case DisplayMetrics.DENSITY_TV: 2915 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2916 case DisplayMetrics.DENSITY_HIGH: 2917 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2918 case DisplayMetrics.DENSITY_XHIGH: 2919 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2920 case DisplayMetrics.DENSITY_XXHIGH: 2921 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2922 default: 2923 // The density is some abnormal value. Return some other 2924 // abnormal value that is a reasonable scaling of it. 2925 return (int)((size*1.5f) + .5f); 2926 } 2927 } 2928 2929 /** 2930 * Returns "true" if the user interface is currently being messed with 2931 * by a monkey. 2932 */ 2933 public static boolean isUserAMonkey() { 2934 try { 2935 return ActivityManagerNative.getDefault().isUserAMonkey(); 2936 } catch (RemoteException e) { 2937 } 2938 return false; 2939 } 2940 2941 /** 2942 * Returns "true" if device is running in a test harness. 2943 */ 2944 public static boolean isRunningInTestHarness() { 2945 return SystemProperties.getBoolean("ro.test_harness", false); 2946 } 2947 2948 /** 2949 * Returns the launch count of each installed package. 2950 * 2951 * @hide 2952 */ 2953 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2954 try { 2955 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2956 ServiceManager.getService("usagestats")); 2957 if (usageStatsService == null) { 2958 return new HashMap<String, Integer>(); 2959 } 2960 2961 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2962 ActivityThread.currentPackageName()); 2963 if (allPkgUsageStats == null) { 2964 return new HashMap<String, Integer>(); 2965 } 2966 2967 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2968 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2969 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2970 } 2971 2972 return launchCounts; 2973 } catch (RemoteException e) { 2974 Log.w(TAG, "Could not query launch counts", e); 2975 return new HashMap<String, Integer>(); 2976 } 2977 }*/ 2978 2979 /** @hide */ 2980 public static int checkComponentPermission(String permission, int uid, 2981 int owningUid, boolean exported) { 2982 // Root, system server get to do everything. 2983 final int appId = UserHandle.getAppId(uid); 2984 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2985 return PackageManager.PERMISSION_GRANTED; 2986 } 2987 // Isolated processes don't get any permissions. 2988 if (UserHandle.isIsolated(uid)) { 2989 return PackageManager.PERMISSION_DENIED; 2990 } 2991 // If there is a uid that owns whatever is being accessed, it has 2992 // blanket access to it regardless of the permissions it requires. 2993 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2994 return PackageManager.PERMISSION_GRANTED; 2995 } 2996 // If the target is not exported, then nobody else can get to it. 2997 if (!exported) { 2998 /* 2999 RuntimeException here = new RuntimeException("here"); 3000 here.fillInStackTrace(); 3001 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 3002 here); 3003 */ 3004 return PackageManager.PERMISSION_DENIED; 3005 } 3006 if (permission == null) { 3007 return PackageManager.PERMISSION_GRANTED; 3008 } 3009 try { 3010 return AppGlobals.getPackageManager() 3011 .checkUidPermission(permission, uid); 3012 } catch (RemoteException e) { 3013 // Should never happen, but if it does... deny! 3014 Slog.e(TAG, "PackageManager is dead?!?", e); 3015 } 3016 return PackageManager.PERMISSION_DENIED; 3017 } 3018 3019 /** @hide */ 3020 public static int checkUidPermission(String permission, int uid) { 3021 try { 3022 return AppGlobals.getPackageManager() 3023 .checkUidPermission(permission, uid); 3024 } catch (RemoteException e) { 3025 // Should never happen, but if it does... deny! 3026 Slog.e(TAG, "PackageManager is dead?!?", e); 3027 } 3028 return PackageManager.PERMISSION_DENIED; 3029 } 3030 3031 /** 3032 * @hide 3033 * Helper for dealing with incoming user arguments to system service calls. 3034 * Takes care of checking permissions and converting USER_CURRENT to the 3035 * actual current user. 3036 * 3037 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3038 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3039 * @param userId The user id argument supplied by the caller -- this is the user 3040 * they want to run as. 3041 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3042 * to get a USER_ALL returned and deal with it correctly. If false, 3043 * an exception will be thrown if USER_ALL is supplied. 3044 * @param requireFull If true, the caller must hold 3045 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3046 * different user than their current process; otherwise they must hold 3047 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3048 * @param name Optional textual name of the incoming call; only for generating error messages. 3049 * @param callerPackage Optional package name of caller; only for error messages. 3050 * 3051 * @return Returns the user ID that the call should run as. Will always be a concrete 3052 * user number, unless <var>allowAll</var> is true in which case it could also be 3053 * USER_ALL. 3054 */ 3055 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3056 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3057 if (UserHandle.getUserId(callingUid) == userId) { 3058 return userId; 3059 } 3060 try { 3061 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3062 callingUid, userId, allowAll, requireFull, name, callerPackage); 3063 } catch (RemoteException e) { 3064 throw new SecurityException("Failed calling activity manager", e); 3065 } 3066 } 3067 3068 /** 3069 * Gets the userId of the current foreground user. Requires system permissions. 3070 * @hide 3071 */ 3072 @SystemApi 3073 public static int getCurrentUser() { 3074 UserInfo ui; 3075 try { 3076 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3077 return ui != null ? ui.id : 0; 3078 } catch (RemoteException e) { 3079 return 0; 3080 } 3081 } 3082 3083 /** 3084 * @param userid the user's id. Zero indicates the default user. 3085 * @hide 3086 */ 3087 public boolean switchUser(int userid) { 3088 try { 3089 return ActivityManagerNative.getDefault().switchUser(userid); 3090 } catch (RemoteException e) { 3091 return false; 3092 } 3093 } 3094 3095 /** {@hide} */ 3096 public static final int FLAG_OR_STOPPED = 1 << 0; 3097 /** {@hide} */ 3098 public static final int FLAG_AND_LOCKED = 1 << 1; 3099 /** {@hide} */ 3100 public static final int FLAG_AND_UNLOCKED = 1 << 2; 3101 3102 /** 3103 * Return whether the given user is actively running. This means that 3104 * the user is in the "started" state, not "stopped" -- it is currently 3105 * allowed to run code through scheduled alarms, receiving broadcasts, 3106 * etc. A started user may be either the current foreground user or a 3107 * background user; the result here does not distinguish between the two. 3108 * @param userid the user's id. Zero indicates the default user. 3109 * @hide 3110 */ 3111 public boolean isUserRunning(int userId) { 3112 try { 3113 return ActivityManagerNative.getDefault().isUserRunning(userId, 0); 3114 } catch (RemoteException e) { 3115 return false; 3116 } 3117 } 3118 3119 /** {@hide} */ 3120 public boolean isUserRunningAndLocked(int userId) { 3121 try { 3122 return ActivityManagerNative.getDefault().isUserRunning(userId, 3123 ActivityManager.FLAG_AND_LOCKED); 3124 } catch (RemoteException e) { 3125 return false; 3126 } 3127 } 3128 3129 /** {@hide} */ 3130 public boolean isUserRunningAndUnlocked(int userId) { 3131 try { 3132 return ActivityManagerNative.getDefault().isUserRunning(userId, 3133 ActivityManager.FLAG_AND_UNLOCKED); 3134 } catch (RemoteException e) { 3135 return false; 3136 } 3137 } 3138 3139 /** 3140 * Perform a system dump of various state associated with the given application 3141 * package name. This call blocks while the dump is being performed, so should 3142 * not be done on a UI thread. The data will be written to the given file 3143 * descriptor as text. An application must hold the 3144 * {@link android.Manifest.permission#DUMP} permission to make this call. 3145 * @param fd The file descriptor that the dump should be written to. The file 3146 * descriptor is <em>not</em> closed by this function; the caller continues to 3147 * own it. 3148 * @param packageName The name of the package that is to be dumped. 3149 */ 3150 public void dumpPackageState(FileDescriptor fd, String packageName) { 3151 dumpPackageStateStatic(fd, packageName); 3152 } 3153 3154 /** 3155 * @hide 3156 */ 3157 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3158 FileOutputStream fout = new FileOutputStream(fd); 3159 PrintWriter pw = new FastPrintWriter(fout); 3160 dumpService(pw, fd, "package", new String[] { packageName }); 3161 pw.println(); 3162 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3163 "-a", "package", packageName }); 3164 pw.println(); 3165 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3166 pw.println(); 3167 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3168 pw.println(); 3169 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3170 pw.println(); 3171 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3172 pw.flush(); 3173 } 3174 3175 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3176 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3177 IBinder service = ServiceManager.checkService(name); 3178 if (service == null) { 3179 pw.println(" (Service not found)"); 3180 return; 3181 } 3182 TransferPipe tp = null; 3183 try { 3184 pw.flush(); 3185 tp = new TransferPipe(); 3186 tp.setBufferPrefix(" "); 3187 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3188 tp.go(fd, 10000); 3189 } catch (Throwable e) { 3190 if (tp != null) { 3191 tp.kill(); 3192 } 3193 pw.println("Failure dumping service:"); 3194 e.printStackTrace(pw); 3195 } 3196 } 3197 3198 /** 3199 * Request that the system start watching for the calling process to exceed a pss 3200 * size as given here. Once called, the system will look for any occasions where it 3201 * sees the associated process with a larger pss size and, when this happens, automatically 3202 * pull a heap dump from it and allow the user to share the data. Note that this request 3203 * continues running even if the process is killed and restarted. To remove the watch, 3204 * use {@link #clearWatchHeapLimit()}. 3205 * 3206 * <p>This API only work if the calling process has been marked as 3207 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3208 * (userdebug or eng) build.</p> 3209 * 3210 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3211 * handle heap limit reports themselves.</p> 3212 * 3213 * @param pssSize The size in bytes to set the limit at. 3214 */ 3215 public void setWatchHeapLimit(long pssSize) { 3216 try { 3217 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3218 mContext.getPackageName()); 3219 } catch (RemoteException e) { 3220 } 3221 } 3222 3223 /** 3224 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3225 * If your package has an activity handling this action, it will be launched with the 3226 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3227 * match the activty must support this action and a MIME type of "*/*". 3228 */ 3229 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3230 3231 /** 3232 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3233 */ 3234 public void clearWatchHeapLimit() { 3235 try { 3236 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3237 } catch (RemoteException e) { 3238 } 3239 } 3240 3241 /** 3242 * @hide 3243 */ 3244 public void startLockTaskMode(int taskId) { 3245 try { 3246 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3247 } catch (RemoteException e) { 3248 } 3249 } 3250 3251 /** 3252 * @hide 3253 */ 3254 public void stopLockTaskMode() { 3255 try { 3256 ActivityManagerNative.getDefault().stopLockTaskMode(); 3257 } catch (RemoteException e) { 3258 } 3259 } 3260 3261 /** 3262 * Return whether currently in lock task mode. When in this mode 3263 * no new tasks can be created or switched to. 3264 * 3265 * @see Activity#startLockTask() 3266 * 3267 * @deprecated Use {@link #getLockTaskModeState} instead. 3268 */ 3269 public boolean isInLockTaskMode() { 3270 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3271 } 3272 3273 /** 3274 * Return the current state of task locking. The three possible outcomes 3275 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3276 * and {@link #LOCK_TASK_MODE_PINNED}. 3277 * 3278 * @see Activity#startLockTask() 3279 */ 3280 public int getLockTaskModeState() { 3281 try { 3282 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3283 } catch (RemoteException e) { 3284 return ActivityManager.LOCK_TASK_MODE_NONE; 3285 } 3286 } 3287 3288 /** 3289 * The AppTask allows you to manage your own application's tasks. 3290 * See {@link android.app.ActivityManager#getAppTasks()} 3291 */ 3292 public static class AppTask { 3293 private IAppTask mAppTaskImpl; 3294 3295 /** @hide */ 3296 public AppTask(IAppTask task) { 3297 mAppTaskImpl = task; 3298 } 3299 3300 /** 3301 * Finishes all activities in this task and removes it from the recent tasks list. 3302 */ 3303 public void finishAndRemoveTask() { 3304 try { 3305 mAppTaskImpl.finishAndRemoveTask(); 3306 } catch (RemoteException e) { 3307 Slog.e(TAG, "Invalid AppTask", e); 3308 } 3309 } 3310 3311 /** 3312 * Get the RecentTaskInfo associated with this task. 3313 * 3314 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3315 */ 3316 public RecentTaskInfo getTaskInfo() { 3317 try { 3318 return mAppTaskImpl.getTaskInfo(); 3319 } catch (RemoteException e) { 3320 Slog.e(TAG, "Invalid AppTask", e); 3321 return null; 3322 } 3323 } 3324 3325 /** 3326 * Bring this task to the foreground. If it contains activities, they will be 3327 * brought to the foreground with it and their instances re-created if needed. 3328 * If it doesn't contain activities, the root activity of the task will be 3329 * re-launched. 3330 */ 3331 public void moveToFront() { 3332 try { 3333 mAppTaskImpl.moveToFront(); 3334 } catch (RemoteException e) { 3335 Slog.e(TAG, "Invalid AppTask", e); 3336 } 3337 } 3338 3339 /** 3340 * Start an activity in this task. Brings the task to the foreground. If this task 3341 * is not currently active (that is, its id < 0), then a new activity for the given 3342 * Intent will be launched as the root of the task and the task brought to the 3343 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3344 * an activity to launch in a new task, then a new activity for the given Intent will 3345 * be launched on top of the task and the task brought to the foreground. If this 3346 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3347 * or would otherwise be launched in to a new task, then the activity not launched but 3348 * this task be brought to the foreground and a new intent delivered to the top 3349 * activity if appropriate. 3350 * 3351 * <p>In other words, you generally want to use an Intent here that does not specify 3352 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3353 * and let the system do the right thing.</p> 3354 * 3355 * @param intent The Intent describing the new activity to be launched on the task. 3356 * @param options Optional launch options. 3357 * 3358 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3359 */ 3360 public void startActivity(Context context, Intent intent, Bundle options) { 3361 ActivityThread thread = ActivityThread.currentActivityThread(); 3362 thread.getInstrumentation().execStartActivityFromAppTask(context, 3363 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3364 } 3365 3366 /** 3367 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3368 * Intent of this AppTask. 3369 * 3370 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3371 * be set; otherwise, it will be cleared. 3372 */ 3373 public void setExcludeFromRecents(boolean exclude) { 3374 try { 3375 mAppTaskImpl.setExcludeFromRecents(exclude); 3376 } catch (RemoteException e) { 3377 Slog.e(TAG, "Invalid AppTask", e); 3378 } 3379 } 3380 } 3381} 3382