ActivityManager.java revision 9cbfc9e212151e84910a22387365644916dde446
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 } 547 548 /** 549 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 550 * specifies the position of the created docked stack at the top half of the screen if 551 * in portrait mode or at the left half of the screen if in landscape mode. 552 * @hide 553 */ 554 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 555 556 /** 557 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 558 * specifies the position of the created docked stack at the bottom half of the screen if 559 * in portrait mode or at the right half of the screen if in landscape mode. 560 * @hide 561 */ 562 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 563 564 /** 565 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 566 * that the resize doesn't need to preserve the window, and can be skipped if bounds 567 * is unchanged. This mode is used by window manager in most cases. 568 * @hide 569 */ 570 public static final int RESIZE_MODE_SYSTEM = 0; 571 572 /** 573 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 574 * that the resize should preserve the window if possible. 575 * @hide 576 */ 577 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 578 579 /** 580 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 581 * that the resize should be performed even if the bounds appears unchanged. 582 * @hide 583 */ 584 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 585 586 /** 587 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 588 * manager during a screen rotation. 589 * @hide 590 */ 591 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 592 593 /** 594 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 595 * resize is due to a drag action. 596 * @hide 597 */ 598 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 599 600 /** 601 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 602 * that the resize should preserve the window if possible, and should not be skipped 603 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 604 * is ending. 605 * @hide 606 */ 607 public static final int RESIZE_MODE_USER_FORCED = 608 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 609 610 /** @hide */ 611 public int getFrontActivityScreenCompatMode() { 612 try { 613 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 614 } catch (RemoteException e) { 615 // System dead, we will be dead too soon! 616 return 0; 617 } 618 } 619 620 /** @hide */ 621 public void setFrontActivityScreenCompatMode(int mode) { 622 try { 623 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 624 } catch (RemoteException e) { 625 // System dead, we will be dead too soon! 626 } 627 } 628 629 /** @hide */ 630 public int getPackageScreenCompatMode(String packageName) { 631 try { 632 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 633 } catch (RemoteException e) { 634 // System dead, we will be dead too soon! 635 return 0; 636 } 637 } 638 639 /** @hide */ 640 public void setPackageScreenCompatMode(String packageName, int mode) { 641 try { 642 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 643 } catch (RemoteException e) { 644 // System dead, we will be dead too soon! 645 } 646 } 647 648 /** @hide */ 649 public boolean getPackageAskScreenCompat(String packageName) { 650 try { 651 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 652 } catch (RemoteException e) { 653 // System dead, we will be dead too soon! 654 return false; 655 } 656 } 657 658 /** @hide */ 659 public void setPackageAskScreenCompat(String packageName, boolean ask) { 660 try { 661 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 662 } catch (RemoteException e) { 663 // System dead, we will be dead too soon! 664 } 665 } 666 667 /** 668 * Return the approximate per-application memory class of the current 669 * device. This gives you an idea of how hard a memory limit you should 670 * impose on your application to let the overall system work best. The 671 * returned value is in megabytes; the baseline Android memory class is 672 * 16 (which happens to be the Java heap limit of those devices); some 673 * device with more memory may return 24 or even higher numbers. 674 */ 675 public int getMemoryClass() { 676 return staticGetMemoryClass(); 677 } 678 679 /** @hide */ 680 static public int staticGetMemoryClass() { 681 // Really brain dead right now -- just take this from the configured 682 // vm heap size, and assume it is in megabytes and thus ends with "m". 683 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 684 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 685 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 686 } 687 return staticGetLargeMemoryClass(); 688 } 689 690 /** 691 * Return the approximate per-application memory class of the current 692 * device when an application is running with a large heap. This is the 693 * space available for memory-intensive applications; most applications 694 * should not need this amount of memory, and should instead stay with the 695 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 696 * This may be the same size as {@link #getMemoryClass()} on memory 697 * constrained devices, or it may be significantly larger on devices with 698 * a large amount of available RAM. 699 * 700 * <p>The is the size of the application's Dalvik heap if it has 701 * specified <code>android:largeHeap="true"</code> in its manifest. 702 */ 703 public int getLargeMemoryClass() { 704 return staticGetLargeMemoryClass(); 705 } 706 707 /** @hide */ 708 static public int staticGetLargeMemoryClass() { 709 // Really brain dead right now -- just take this from the configured 710 // vm heap size, and assume it is in megabytes and thus ends with "m". 711 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 712 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 713 } 714 715 /** 716 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 717 * is ultimately up to the device configuration, but currently it generally means 718 * something in the class of a 512MB device with about a 800x480 or less screen. 719 * This is mostly intended to be used by apps to determine whether they should turn 720 * off certain features that require more RAM. 721 */ 722 public boolean isLowRamDevice() { 723 return isLowRamDeviceStatic(); 724 } 725 726 /** @hide */ 727 public static boolean isLowRamDeviceStatic() { 728 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 729 } 730 731 /** 732 * Used by persistent processes to determine if they are running on a 733 * higher-end device so should be okay using hardware drawing acceleration 734 * (which tends to consume a lot more RAM). 735 * @hide 736 */ 737 static public boolean isHighEndGfx() { 738 return !isLowRamDeviceStatic() && 739 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 740 } 741 742 /** 743 * Return the maximum number of recents entries that we will maintain and show. 744 * @hide 745 */ 746 static public int getMaxRecentTasksStatic() { 747 if (gMaxRecentTasks < 0) { 748 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 749 } 750 return gMaxRecentTasks; 751 } 752 753 /** 754 * Return the default limit on the number of recents that an app can make. 755 * @hide 756 */ 757 static public int getDefaultAppRecentsLimitStatic() { 758 return getMaxRecentTasksStatic() / 6; 759 } 760 761 /** 762 * Return the maximum limit on the number of recents that an app can make. 763 * @hide 764 */ 765 static public int getMaxAppRecentsLimitStatic() { 766 return getMaxRecentTasksStatic() / 2; 767 } 768 769 /** 770 * Information you can set and retrieve about the current activity within the recent task list. 771 */ 772 public static class TaskDescription implements Parcelable { 773 /** @hide */ 774 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 775 private static final String ATTR_TASKDESCRIPTIONLABEL = 776 ATTR_TASKDESCRIPTION_PREFIX + "label"; 777 private static final String ATTR_TASKDESCRIPTIONCOLOR = 778 ATTR_TASKDESCRIPTION_PREFIX + "color"; 779 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 780 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 781 782 private String mLabel; 783 private Bitmap mIcon; 784 private String mIconFilename; 785 private int mColorPrimary; 786 787 /** 788 * Creates the TaskDescription to the specified values. 789 * 790 * @param label A label and description of the current state of this task. 791 * @param icon An icon that represents the current state of this task. 792 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 793 */ 794 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 795 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 796 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 797 } 798 799 mLabel = label; 800 mIcon = icon; 801 mColorPrimary = colorPrimary; 802 } 803 804 /** @hide */ 805 public TaskDescription(String label, int colorPrimary, String iconFilename) { 806 this(label, null, colorPrimary); 807 mIconFilename = iconFilename; 808 } 809 810 /** 811 * Creates the TaskDescription to the specified values. 812 * 813 * @param label A label and description of the current state of this activity. 814 * @param icon An icon that represents the current state of this activity. 815 */ 816 public TaskDescription(String label, Bitmap icon) { 817 this(label, icon, 0); 818 } 819 820 /** 821 * Creates the TaskDescription to the specified values. 822 * 823 * @param label A label and description of the current state of this activity. 824 */ 825 public TaskDescription(String label) { 826 this(label, null, 0); 827 } 828 829 /** 830 * Creates an empty TaskDescription. 831 */ 832 public TaskDescription() { 833 this(null, null, 0); 834 } 835 836 /** 837 * Creates a copy of another TaskDescription. 838 */ 839 public TaskDescription(TaskDescription td) { 840 mLabel = td.mLabel; 841 mIcon = td.mIcon; 842 mColorPrimary = td.mColorPrimary; 843 mIconFilename = td.mIconFilename; 844 } 845 846 private TaskDescription(Parcel source) { 847 readFromParcel(source); 848 } 849 850 /** 851 * Sets the label for this task description. 852 * @hide 853 */ 854 public void setLabel(String label) { 855 mLabel = label; 856 } 857 858 /** 859 * Sets the primary color for this task description. 860 * @hide 861 */ 862 public void setPrimaryColor(int primaryColor) { 863 // Ensure that the given color is valid 864 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 865 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 866 } 867 mColorPrimary = primaryColor; 868 } 869 870 /** 871 * Sets the icon for this task description. 872 * @hide 873 */ 874 public void setIcon(Bitmap icon) { 875 mIcon = icon; 876 } 877 878 /** 879 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 880 * bitmap. 881 * @hide 882 */ 883 public void setIconFilename(String iconFilename) { 884 mIconFilename = iconFilename; 885 mIcon = null; 886 } 887 888 /** 889 * @return The label and description of the current state of this task. 890 */ 891 public String getLabel() { 892 return mLabel; 893 } 894 895 /** 896 * @return The icon that represents the current state of this task. 897 */ 898 public Bitmap getIcon() { 899 if (mIcon != null) { 900 return mIcon; 901 } 902 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 903 } 904 905 /** @hide */ 906 public String getIconFilename() { 907 return mIconFilename; 908 } 909 910 /** @hide */ 911 public Bitmap getInMemoryIcon() { 912 return mIcon; 913 } 914 915 /** @hide */ 916 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 917 if (iconFilename != null) { 918 try { 919 return ActivityManagerNative.getDefault(). 920 getTaskDescriptionIcon(iconFilename, userId); 921 } catch (RemoteException e) { 922 } 923 } 924 return null; 925 } 926 927 /** 928 * @return The color override on the theme's primary color. 929 */ 930 public int getPrimaryColor() { 931 return mColorPrimary; 932 } 933 934 /** @hide */ 935 public void saveToXml(XmlSerializer out) throws IOException { 936 if (mLabel != null) { 937 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 938 } 939 if (mColorPrimary != 0) { 940 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 941 } 942 if (mIconFilename != null) { 943 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 944 } 945 } 946 947 /** @hide */ 948 public void restoreFromXml(String attrName, String attrValue) { 949 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 950 setLabel(attrValue); 951 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 952 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 953 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 954 setIconFilename(attrValue); 955 } 956 } 957 958 @Override 959 public int describeContents() { 960 return 0; 961 } 962 963 @Override 964 public void writeToParcel(Parcel dest, int flags) { 965 if (mLabel == null) { 966 dest.writeInt(0); 967 } else { 968 dest.writeInt(1); 969 dest.writeString(mLabel); 970 } 971 if (mIcon == null) { 972 dest.writeInt(0); 973 } else { 974 dest.writeInt(1); 975 mIcon.writeToParcel(dest, 0); 976 } 977 dest.writeInt(mColorPrimary); 978 if (mIconFilename == null) { 979 dest.writeInt(0); 980 } else { 981 dest.writeInt(1); 982 dest.writeString(mIconFilename); 983 } 984 } 985 986 public void readFromParcel(Parcel source) { 987 mLabel = source.readInt() > 0 ? source.readString() : null; 988 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 989 mColorPrimary = source.readInt(); 990 mIconFilename = source.readInt() > 0 ? source.readString() : null; 991 } 992 993 public static final Creator<TaskDescription> CREATOR 994 = new Creator<TaskDescription>() { 995 public TaskDescription createFromParcel(Parcel source) { 996 return new TaskDescription(source); 997 } 998 public TaskDescription[] newArray(int size) { 999 return new TaskDescription[size]; 1000 } 1001 }; 1002 1003 @Override 1004 public String toString() { 1005 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1006 " colorPrimary: " + mColorPrimary; 1007 } 1008 } 1009 1010 /** 1011 * Information you can retrieve about tasks that the user has most recently 1012 * started or visited. 1013 */ 1014 public static class RecentTaskInfo implements Parcelable { 1015 /** 1016 * If this task is currently running, this is the identifier for it. 1017 * If it is not running, this will be -1. 1018 */ 1019 public int id; 1020 1021 /** 1022 * The true identifier of this task, valid even if it is not running. 1023 */ 1024 public int persistentId; 1025 1026 /** 1027 * The original Intent used to launch the task. You can use this 1028 * Intent to re-launch the task (if it is no longer running) or bring 1029 * the current task to the front. 1030 */ 1031 public Intent baseIntent; 1032 1033 /** 1034 * If this task was started from an alias, this is the actual 1035 * activity component that was initially started; the component of 1036 * the baseIntent in this case is the name of the actual activity 1037 * implementation that the alias referred to. Otherwise, this is null. 1038 */ 1039 public ComponentName origActivity; 1040 1041 /** 1042 * The actual activity component that started the task. 1043 * @hide 1044 */ 1045 @Nullable 1046 public ComponentName realActivity; 1047 1048 /** 1049 * Description of the task's last state. 1050 */ 1051 public CharSequence description; 1052 1053 /** 1054 * The id of the ActivityStack this Task was on most recently. 1055 * @hide 1056 */ 1057 public int stackId; 1058 1059 /** 1060 * The id of the user the task was running as. 1061 * @hide 1062 */ 1063 public int userId; 1064 1065 /** 1066 * The first time this task was active. 1067 * @hide 1068 */ 1069 public long firstActiveTime; 1070 1071 /** 1072 * The last time this task was active. 1073 * @hide 1074 */ 1075 public long lastActiveTime; 1076 1077 /** 1078 * The recent activity values for the highest activity in the stack to have set the values. 1079 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1080 */ 1081 public TaskDescription taskDescription; 1082 1083 /** 1084 * Task affiliation for grouping with other tasks. 1085 */ 1086 public int affiliatedTaskId; 1087 1088 /** 1089 * Task affiliation color of the source task with the affiliated task id. 1090 * 1091 * @hide 1092 */ 1093 public int affiliatedTaskColor; 1094 1095 /** 1096 * The component launched as the first activity in the task. 1097 * This can be considered the "application" of this task. 1098 */ 1099 public ComponentName baseActivity; 1100 1101 /** 1102 * The activity component at the top of the history stack of the task. 1103 * This is what the user is currently doing. 1104 */ 1105 public ComponentName topActivity; 1106 1107 /** 1108 * Number of activities in this task. 1109 */ 1110 public int numActivities; 1111 1112 /** 1113 * The bounds of the task. 1114 * @hide 1115 */ 1116 public Rect bounds; 1117 1118 public RecentTaskInfo() { 1119 } 1120 1121 @Override 1122 public int describeContents() { 1123 return 0; 1124 } 1125 1126 @Override 1127 public void writeToParcel(Parcel dest, int flags) { 1128 dest.writeInt(id); 1129 dest.writeInt(persistentId); 1130 if (baseIntent != null) { 1131 dest.writeInt(1); 1132 baseIntent.writeToParcel(dest, 0); 1133 } else { 1134 dest.writeInt(0); 1135 } 1136 ComponentName.writeToParcel(origActivity, dest); 1137 ComponentName.writeToParcel(realActivity, dest); 1138 TextUtils.writeToParcel(description, dest, 1139 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1140 if (taskDescription != null) { 1141 dest.writeInt(1); 1142 taskDescription.writeToParcel(dest, 0); 1143 } else { 1144 dest.writeInt(0); 1145 } 1146 dest.writeInt(stackId); 1147 dest.writeInt(userId); 1148 dest.writeLong(firstActiveTime); 1149 dest.writeLong(lastActiveTime); 1150 dest.writeInt(affiliatedTaskId); 1151 dest.writeInt(affiliatedTaskColor); 1152 ComponentName.writeToParcel(baseActivity, dest); 1153 ComponentName.writeToParcel(topActivity, dest); 1154 dest.writeInt(numActivities); 1155 if (bounds != null) { 1156 dest.writeInt(1); 1157 bounds.writeToParcel(dest, 0); 1158 } else { 1159 dest.writeInt(0); 1160 } 1161 } 1162 1163 public void readFromParcel(Parcel source) { 1164 id = source.readInt(); 1165 persistentId = source.readInt(); 1166 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1167 origActivity = ComponentName.readFromParcel(source); 1168 realActivity = ComponentName.readFromParcel(source); 1169 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1170 taskDescription = source.readInt() > 0 ? 1171 TaskDescription.CREATOR.createFromParcel(source) : null; 1172 stackId = source.readInt(); 1173 userId = source.readInt(); 1174 firstActiveTime = source.readLong(); 1175 lastActiveTime = source.readLong(); 1176 affiliatedTaskId = source.readInt(); 1177 affiliatedTaskColor = source.readInt(); 1178 baseActivity = ComponentName.readFromParcel(source); 1179 topActivity = ComponentName.readFromParcel(source); 1180 numActivities = source.readInt(); 1181 bounds = source.readInt() > 0 ? 1182 Rect.CREATOR.createFromParcel(source) : null; 1183 } 1184 1185 public static final Creator<RecentTaskInfo> CREATOR 1186 = new Creator<RecentTaskInfo>() { 1187 public RecentTaskInfo createFromParcel(Parcel source) { 1188 return new RecentTaskInfo(source); 1189 } 1190 public RecentTaskInfo[] newArray(int size) { 1191 return new RecentTaskInfo[size]; 1192 } 1193 }; 1194 1195 private RecentTaskInfo(Parcel source) { 1196 readFromParcel(source); 1197 } 1198 } 1199 1200 /** 1201 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1202 * that have set their 1203 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1204 */ 1205 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1206 1207 /** 1208 * Provides a list that does not contain any 1209 * recent tasks that currently are not available to the user. 1210 */ 1211 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1212 1213 /** 1214 * Provides a list that contains recent tasks for all 1215 * profiles of a user. 1216 * @hide 1217 */ 1218 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1219 1220 /** 1221 * Ignores all tasks that are on the home stack. 1222 * @hide 1223 */ 1224 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1225 1226 /** 1227 * <p></p>Return a list of the tasks that the user has recently launched, with 1228 * the most recent being first and older ones after in order. 1229 * 1230 * <p><b>Note: this method is only intended for debugging and presenting 1231 * task management user interfaces</b>. This should never be used for 1232 * core logic in an application, such as deciding between different 1233 * behaviors based on the information found here. Such uses are 1234 * <em>not</em> supported, and will likely break in the future. For 1235 * example, if multiple applications can be actively running at the 1236 * same time, assumptions made about the meaning of the data here for 1237 * purposes of control flow will be incorrect.</p> 1238 * 1239 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1240 * no longer available to third party applications: the introduction of 1241 * document-centric recents means 1242 * it can leak personal information to the caller. For backwards compatibility, 1243 * it will still return a small subset of its data: at least the caller's 1244 * own tasks (though see {@link #getAppTasks()} for the correct supported 1245 * way to retrieve that information), and possibly some other tasks 1246 * such as home that are known to not be sensitive. 1247 * 1248 * @param maxNum The maximum number of entries to return in the list. The 1249 * actual number returned may be smaller, depending on how many tasks the 1250 * user has started and the maximum number the system can remember. 1251 * @param flags Information about what to return. May be any combination 1252 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1253 * 1254 * @return Returns a list of RecentTaskInfo records describing each of 1255 * the recent tasks. 1256 */ 1257 @Deprecated 1258 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1259 throws SecurityException { 1260 try { 1261 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1262 flags, UserHandle.myUserId()); 1263 } catch (RemoteException e) { 1264 // System dead, we will be dead too soon! 1265 return null; 1266 } 1267 } 1268 1269 /** 1270 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1271 * specific user. It requires holding 1272 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1273 * @param maxNum The maximum number of entries to return in the list. The 1274 * actual number returned may be smaller, depending on how many tasks the 1275 * user has started and the maximum number the system can remember. 1276 * @param flags Information about what to return. May be any combination 1277 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1278 * 1279 * @return Returns a list of RecentTaskInfo records describing each of 1280 * the recent tasks. Most recently activated tasks go first. 1281 * 1282 * @hide 1283 */ 1284 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1285 throws SecurityException { 1286 try { 1287 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1288 flags, userId); 1289 } catch (RemoteException e) { 1290 // System dead, we will be dead too soon! 1291 return null; 1292 } 1293 } 1294 1295 /** 1296 * Information you can retrieve about a particular task that is currently 1297 * "running" in the system. Note that a running task does not mean the 1298 * given task actually has a process it is actively running in; it simply 1299 * means that the user has gone to it and never closed it, but currently 1300 * the system may have killed its process and is only holding on to its 1301 * last state in order to restart it when the user returns. 1302 */ 1303 public static class RunningTaskInfo implements Parcelable { 1304 /** 1305 * A unique identifier for this task. 1306 */ 1307 public int id; 1308 1309 /** 1310 * The stack that currently contains this task. 1311 * @hide 1312 */ 1313 public int stackId; 1314 1315 /** 1316 * The component launched as the first activity in the task. This can 1317 * be considered the "application" of this task. 1318 */ 1319 public ComponentName baseActivity; 1320 1321 /** 1322 * The activity component at the top of the history stack of the task. 1323 * This is what the user is currently doing. 1324 */ 1325 public ComponentName topActivity; 1326 1327 /** 1328 * Thumbnail representation of the task's current state. Currently 1329 * always null. 1330 */ 1331 public Bitmap thumbnail; 1332 1333 /** 1334 * Description of the task's current state. 1335 */ 1336 public CharSequence description; 1337 1338 /** 1339 * Number of activities in this task. 1340 */ 1341 public int numActivities; 1342 1343 /** 1344 * Number of activities that are currently running (not stopped 1345 * and persisted) in this task. 1346 */ 1347 public int numRunning; 1348 1349 /** 1350 * Last time task was run. For sorting. 1351 * @hide 1352 */ 1353 public long lastActiveTime; 1354 1355 public RunningTaskInfo() { 1356 } 1357 1358 public int describeContents() { 1359 return 0; 1360 } 1361 1362 public void writeToParcel(Parcel dest, int flags) { 1363 dest.writeInt(id); 1364 dest.writeInt(stackId); 1365 ComponentName.writeToParcel(baseActivity, dest); 1366 ComponentName.writeToParcel(topActivity, dest); 1367 if (thumbnail != null) { 1368 dest.writeInt(1); 1369 thumbnail.writeToParcel(dest, 0); 1370 } else { 1371 dest.writeInt(0); 1372 } 1373 TextUtils.writeToParcel(description, dest, 1374 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1375 dest.writeInt(numActivities); 1376 dest.writeInt(numRunning); 1377 } 1378 1379 public void readFromParcel(Parcel source) { 1380 id = source.readInt(); 1381 stackId = source.readInt(); 1382 baseActivity = ComponentName.readFromParcel(source); 1383 topActivity = ComponentName.readFromParcel(source); 1384 if (source.readInt() != 0) { 1385 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1386 } else { 1387 thumbnail = null; 1388 } 1389 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1390 numActivities = source.readInt(); 1391 numRunning = source.readInt(); 1392 } 1393 1394 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1395 public RunningTaskInfo createFromParcel(Parcel source) { 1396 return new RunningTaskInfo(source); 1397 } 1398 public RunningTaskInfo[] newArray(int size) { 1399 return new RunningTaskInfo[size]; 1400 } 1401 }; 1402 1403 private RunningTaskInfo(Parcel source) { 1404 readFromParcel(source); 1405 } 1406 } 1407 1408 /** 1409 * Get the list of tasks associated with the calling application. 1410 * 1411 * @return The list of tasks associated with the application making this call. 1412 * @throws SecurityException 1413 */ 1414 public List<ActivityManager.AppTask> getAppTasks() { 1415 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1416 List<IAppTask> appTasks; 1417 try { 1418 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1419 } catch (RemoteException e) { 1420 // System dead, we will be dead too soon! 1421 return null; 1422 } 1423 int numAppTasks = appTasks.size(); 1424 for (int i = 0; i < numAppTasks; i++) { 1425 tasks.add(new AppTask(appTasks.get(i))); 1426 } 1427 return tasks; 1428 } 1429 1430 /** 1431 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1432 * with {@link #addAppTask}. 1433 */ 1434 public Size getAppTaskThumbnailSize() { 1435 synchronized (this) { 1436 ensureAppTaskThumbnailSizeLocked(); 1437 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1438 } 1439 } 1440 1441 private void ensureAppTaskThumbnailSizeLocked() { 1442 if (mAppTaskThumbnailSize == null) { 1443 try { 1444 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1445 } catch (RemoteException e) { 1446 throw new IllegalStateException("System dead?", e); 1447 } 1448 } 1449 } 1450 1451 /** 1452 * Add a new {@link AppTask} for the calling application. This will create a new 1453 * recents entry that is added to the <b>end</b> of all existing recents. 1454 * 1455 * @param activity The activity that is adding the entry. This is used to help determine 1456 * the context that the new recents entry will be in. 1457 * @param intent The Intent that describes the recents entry. This is the same Intent that 1458 * you would have used to launch the activity for it. In generally you will want to set 1459 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1460 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1461 * entry will exist without an activity, so it doesn't make sense to not retain it when 1462 * its activity disappears. The given Intent here also must have an explicit ComponentName 1463 * set on it. 1464 * @param description Optional additional description information. 1465 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1466 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1467 * recreated in your process, probably in a way you don't like, before the recents entry 1468 * is added. 1469 * 1470 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1471 * most likely cause of failure is that there is no more room for more tasks for your app. 1472 */ 1473 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1474 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1475 Point size; 1476 synchronized (this) { 1477 ensureAppTaskThumbnailSizeLocked(); 1478 size = mAppTaskThumbnailSize; 1479 } 1480 final int tw = thumbnail.getWidth(); 1481 final int th = thumbnail.getHeight(); 1482 if (tw != size.x || th != size.y) { 1483 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1484 1485 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1486 float scale; 1487 float dx = 0, dy = 0; 1488 if (tw * size.x > size.y * th) { 1489 scale = (float) size.x / (float) th; 1490 dx = (size.y - tw * scale) * 0.5f; 1491 } else { 1492 scale = (float) size.y / (float) tw; 1493 dy = (size.x - th * scale) * 0.5f; 1494 } 1495 Matrix matrix = new Matrix(); 1496 matrix.setScale(scale, scale); 1497 matrix.postTranslate((int) (dx + 0.5f), 0); 1498 1499 Canvas canvas = new Canvas(bm); 1500 canvas.drawBitmap(thumbnail, matrix, null); 1501 canvas.setBitmap(null); 1502 1503 thumbnail = bm; 1504 } 1505 if (description == null) { 1506 description = new TaskDescription(); 1507 } 1508 try { 1509 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1510 intent, description, thumbnail); 1511 } catch (RemoteException e) { 1512 throw new IllegalStateException("System dead?", e); 1513 } 1514 } 1515 1516 /** 1517 * Return a list of the tasks that are currently running, with 1518 * the most recent being first and older ones after in order. Note that 1519 * "running" does not mean any of the task's code is currently loaded or 1520 * activity -- the task may have been frozen by the system, so that it 1521 * can be restarted in its previous state when next brought to the 1522 * foreground. 1523 * 1524 * <p><b>Note: this method is only intended for debugging and presenting 1525 * task management user interfaces</b>. This should never be used for 1526 * core logic in an application, such as deciding between different 1527 * behaviors based on the information found here. Such uses are 1528 * <em>not</em> supported, and will likely break in the future. For 1529 * example, if multiple applications can be actively running at the 1530 * same time, assumptions made about the meaning of the data here for 1531 * purposes of control flow will be incorrect.</p> 1532 * 1533 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1534 * is no longer available to third party 1535 * applications: the introduction of document-centric recents means 1536 * it can leak person information to the caller. For backwards compatibility, 1537 * it will still retu rn a small subset of its data: at least the caller's 1538 * own tasks, and possibly some other tasks 1539 * such as home that are known to not be sensitive. 1540 * 1541 * @param maxNum The maximum number of entries to return in the list. The 1542 * actual number returned may be smaller, depending on how many tasks the 1543 * user has started. 1544 * 1545 * @return Returns a list of RunningTaskInfo records describing each of 1546 * the running tasks. 1547 */ 1548 @Deprecated 1549 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1550 throws SecurityException { 1551 try { 1552 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1553 } catch (RemoteException e) { 1554 // System dead, we will be dead too soon! 1555 return null; 1556 } 1557 } 1558 1559 /** 1560 * Completely remove the given task. 1561 * 1562 * @param taskId Identifier of the task to be removed. 1563 * @return Returns true if the given task was found and removed. 1564 * 1565 * @hide 1566 */ 1567 public boolean removeTask(int taskId) throws SecurityException { 1568 try { 1569 return ActivityManagerNative.getDefault().removeTask(taskId); 1570 } catch (RemoteException e) { 1571 // System dead, we will be dead too soon! 1572 return false; 1573 } 1574 } 1575 1576 /** 1577 * Metadata related to the {@link TaskThumbnail}. 1578 * 1579 * @hide 1580 */ 1581 public static class TaskThumbnailInfo implements Parcelable { 1582 /** @hide */ 1583 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1584 private static final String ATTR_TASK_WIDTH = 1585 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1586 private static final String ATTR_TASK_HEIGHT = 1587 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1588 private static final String ATTR_SCREEN_ORIENTATION = 1589 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1590 1591 public int taskWidth; 1592 public int taskHeight; 1593 public int screenOrientation; 1594 1595 public TaskThumbnailInfo() { 1596 // Do nothing 1597 } 1598 1599 private TaskThumbnailInfo(Parcel source) { 1600 readFromParcel(source); 1601 } 1602 1603 /** 1604 * Resets this info state to the initial state. 1605 * @hide 1606 */ 1607 public void reset() { 1608 taskWidth = 0; 1609 taskHeight = 0; 1610 screenOrientation = 0; 1611 } 1612 1613 /** @hide */ 1614 public void saveToXml(XmlSerializer out) throws IOException { 1615 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1616 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1617 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1618 } 1619 1620 /** @hide */ 1621 public void restoreFromXml(String attrName, String attrValue) { 1622 if (ATTR_TASK_WIDTH.equals(attrName)) { 1623 taskWidth = Integer.parseInt(attrValue); 1624 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1625 taskHeight = Integer.parseInt(attrValue); 1626 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1627 screenOrientation = Integer.parseInt(attrValue); 1628 } 1629 } 1630 1631 public int describeContents() { 1632 return 0; 1633 } 1634 1635 public void writeToParcel(Parcel dest, int flags) { 1636 dest.writeInt(taskWidth); 1637 dest.writeInt(taskHeight); 1638 dest.writeInt(screenOrientation); 1639 } 1640 1641 public void readFromParcel(Parcel source) { 1642 taskWidth = source.readInt(); 1643 taskHeight = source.readInt(); 1644 screenOrientation = source.readInt(); 1645 } 1646 1647 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1648 public TaskThumbnailInfo createFromParcel(Parcel source) { 1649 return new TaskThumbnailInfo(source); 1650 } 1651 public TaskThumbnailInfo[] newArray(int size) { 1652 return new TaskThumbnailInfo[size]; 1653 } 1654 }; 1655 } 1656 1657 /** @hide */ 1658 public static class TaskThumbnail implements Parcelable { 1659 public Bitmap mainThumbnail; 1660 public ParcelFileDescriptor thumbnailFileDescriptor; 1661 public TaskThumbnailInfo thumbnailInfo; 1662 1663 public TaskThumbnail() { 1664 } 1665 1666 private TaskThumbnail(Parcel source) { 1667 readFromParcel(source); 1668 } 1669 1670 public int describeContents() { 1671 if (thumbnailFileDescriptor != null) { 1672 return thumbnailFileDescriptor.describeContents(); 1673 } 1674 return 0; 1675 } 1676 1677 public void writeToParcel(Parcel dest, int flags) { 1678 if (mainThumbnail != null) { 1679 dest.writeInt(1); 1680 mainThumbnail.writeToParcel(dest, flags); 1681 } else { 1682 dest.writeInt(0); 1683 } 1684 if (thumbnailFileDescriptor != null) { 1685 dest.writeInt(1); 1686 thumbnailFileDescriptor.writeToParcel(dest, flags); 1687 } else { 1688 dest.writeInt(0); 1689 } 1690 if (thumbnailInfo != null) { 1691 dest.writeInt(1); 1692 thumbnailInfo.writeToParcel(dest, flags); 1693 } else { 1694 dest.writeInt(0); 1695 } 1696 } 1697 1698 public void readFromParcel(Parcel source) { 1699 if (source.readInt() != 0) { 1700 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1701 } else { 1702 mainThumbnail = null; 1703 } 1704 if (source.readInt() != 0) { 1705 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1706 } else { 1707 thumbnailFileDescriptor = null; 1708 } 1709 if (source.readInt() != 0) { 1710 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1711 } else { 1712 thumbnailInfo = null; 1713 } 1714 } 1715 1716 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1717 public TaskThumbnail createFromParcel(Parcel source) { 1718 return new TaskThumbnail(source); 1719 } 1720 public TaskThumbnail[] newArray(int size) { 1721 return new TaskThumbnail[size]; 1722 } 1723 }; 1724 } 1725 1726 /** @hide */ 1727 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1728 try { 1729 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1730 } catch (RemoteException e) { 1731 // System dead, we will be dead too soon! 1732 return null; 1733 } 1734 } 1735 1736 /** @hide */ 1737 public boolean isInHomeStack(int taskId) { 1738 try { 1739 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1740 } catch (RemoteException e) { 1741 // System dead, we will be dead too soon! 1742 return false; 1743 } 1744 } 1745 1746 /** 1747 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1748 * activity along with the task, so it is positioned immediately behind 1749 * the task. 1750 */ 1751 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1752 1753 /** 1754 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1755 * user-instigated action, so the current activity will not receive a 1756 * hint that the user is leaving. 1757 */ 1758 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1759 1760 /** 1761 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1762 * with a null options argument. 1763 * 1764 * @param taskId The identifier of the task to be moved, as found in 1765 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1766 * @param flags Additional operational flags, 0 or more of 1767 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1768 */ 1769 public void moveTaskToFront(int taskId, int flags) { 1770 moveTaskToFront(taskId, flags, null); 1771 } 1772 1773 /** 1774 * Ask that the task associated with a given task ID be moved to the 1775 * front of the stack, so it is now visible to the user. Requires that 1776 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1777 * or a SecurityException will be thrown. 1778 * 1779 * @param taskId The identifier of the task to be moved, as found in 1780 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1781 * @param flags Additional operational flags, 0 or more of 1782 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1783 * @param options Additional options for the operation, either null or 1784 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1785 * Context.startActivity(Intent, Bundle)}. 1786 */ 1787 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1788 try { 1789 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1790 } catch (RemoteException e) { 1791 // System dead, we will be dead too soon! 1792 } 1793 } 1794 1795 /** 1796 * Information you can retrieve about a particular Service that is 1797 * currently running in the system. 1798 */ 1799 public static class RunningServiceInfo implements Parcelable { 1800 /** 1801 * The service component. 1802 */ 1803 public ComponentName service; 1804 1805 /** 1806 * If non-zero, this is the process the service is running in. 1807 */ 1808 public int pid; 1809 1810 /** 1811 * The UID that owns this service. 1812 */ 1813 public int uid; 1814 1815 /** 1816 * The name of the process this service runs in. 1817 */ 1818 public String process; 1819 1820 /** 1821 * Set to true if the service has asked to run as a foreground process. 1822 */ 1823 public boolean foreground; 1824 1825 /** 1826 * The time when the service was first made active, either by someone 1827 * starting or binding to it. This 1828 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1829 */ 1830 public long activeSince; 1831 1832 /** 1833 * Set to true if this service has been explicitly started. 1834 */ 1835 public boolean started; 1836 1837 /** 1838 * Number of clients connected to the service. 1839 */ 1840 public int clientCount; 1841 1842 /** 1843 * Number of times the service's process has crashed while the service 1844 * is running. 1845 */ 1846 public int crashCount; 1847 1848 /** 1849 * The time when there was last activity in the service (either 1850 * explicit requests to start it or clients binding to it). This 1851 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1852 */ 1853 public long lastActivityTime; 1854 1855 /** 1856 * If non-zero, this service is not currently running, but scheduled to 1857 * restart at the given time. 1858 */ 1859 public long restarting; 1860 1861 /** 1862 * Bit for {@link #flags}: set if this service has been 1863 * explicitly started. 1864 */ 1865 public static final int FLAG_STARTED = 1<<0; 1866 1867 /** 1868 * Bit for {@link #flags}: set if the service has asked to 1869 * run as a foreground process. 1870 */ 1871 public static final int FLAG_FOREGROUND = 1<<1; 1872 1873 /** 1874 * Bit for {@link #flags): set if the service is running in a 1875 * core system process. 1876 */ 1877 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1878 1879 /** 1880 * Bit for {@link #flags): set if the service is running in a 1881 * persistent process. 1882 */ 1883 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1884 1885 /** 1886 * Running flags. 1887 */ 1888 public int flags; 1889 1890 /** 1891 * For special services that are bound to by system code, this is 1892 * the package that holds the binding. 1893 */ 1894 public String clientPackage; 1895 1896 /** 1897 * For special services that are bound to by system code, this is 1898 * a string resource providing a user-visible label for who the 1899 * client is. 1900 */ 1901 public int clientLabel; 1902 1903 public RunningServiceInfo() { 1904 } 1905 1906 public int describeContents() { 1907 return 0; 1908 } 1909 1910 public void writeToParcel(Parcel dest, int flags) { 1911 ComponentName.writeToParcel(service, dest); 1912 dest.writeInt(pid); 1913 dest.writeInt(uid); 1914 dest.writeString(process); 1915 dest.writeInt(foreground ? 1 : 0); 1916 dest.writeLong(activeSince); 1917 dest.writeInt(started ? 1 : 0); 1918 dest.writeInt(clientCount); 1919 dest.writeInt(crashCount); 1920 dest.writeLong(lastActivityTime); 1921 dest.writeLong(restarting); 1922 dest.writeInt(this.flags); 1923 dest.writeString(clientPackage); 1924 dest.writeInt(clientLabel); 1925 } 1926 1927 public void readFromParcel(Parcel source) { 1928 service = ComponentName.readFromParcel(source); 1929 pid = source.readInt(); 1930 uid = source.readInt(); 1931 process = source.readString(); 1932 foreground = source.readInt() != 0; 1933 activeSince = source.readLong(); 1934 started = source.readInt() != 0; 1935 clientCount = source.readInt(); 1936 crashCount = source.readInt(); 1937 lastActivityTime = source.readLong(); 1938 restarting = source.readLong(); 1939 flags = source.readInt(); 1940 clientPackage = source.readString(); 1941 clientLabel = source.readInt(); 1942 } 1943 1944 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1945 public RunningServiceInfo createFromParcel(Parcel source) { 1946 return new RunningServiceInfo(source); 1947 } 1948 public RunningServiceInfo[] newArray(int size) { 1949 return new RunningServiceInfo[size]; 1950 } 1951 }; 1952 1953 private RunningServiceInfo(Parcel source) { 1954 readFromParcel(source); 1955 } 1956 } 1957 1958 /** 1959 * Return a list of the services that are currently running. 1960 * 1961 * <p><b>Note: this method is only intended for debugging or implementing 1962 * service management type user interfaces.</b></p> 1963 * 1964 * @param maxNum The maximum number of entries to return in the list. The 1965 * actual number returned may be smaller, depending on how many services 1966 * are running. 1967 * 1968 * @return Returns a list of RunningServiceInfo records describing each of 1969 * the running tasks. 1970 */ 1971 public List<RunningServiceInfo> getRunningServices(int maxNum) 1972 throws SecurityException { 1973 try { 1974 return ActivityManagerNative.getDefault() 1975 .getServices(maxNum, 0); 1976 } catch (RemoteException e) { 1977 // System dead, we will be dead too soon! 1978 return null; 1979 } 1980 } 1981 1982 /** 1983 * Returns a PendingIntent you can start to show a control panel for the 1984 * given running service. If the service does not have a control panel, 1985 * null is returned. 1986 */ 1987 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1988 throws SecurityException { 1989 try { 1990 return ActivityManagerNative.getDefault() 1991 .getRunningServiceControlPanel(service); 1992 } catch (RemoteException e) { 1993 // System dead, we will be dead too soon! 1994 return null; 1995 } 1996 } 1997 1998 /** 1999 * Information you can retrieve about the available memory through 2000 * {@link ActivityManager#getMemoryInfo}. 2001 */ 2002 public static class MemoryInfo implements Parcelable { 2003 /** 2004 * The available memory on the system. This number should not 2005 * be considered absolute: due to the nature of the kernel, a significant 2006 * portion of this memory is actually in use and needed for the overall 2007 * system to run well. 2008 */ 2009 public long availMem; 2010 2011 /** 2012 * The total memory accessible by the kernel. This is basically the 2013 * RAM size of the device, not including below-kernel fixed allocations 2014 * like DMA buffers, RAM for the baseband CPU, etc. 2015 */ 2016 public long totalMem; 2017 2018 /** 2019 * The threshold of {@link #availMem} at which we consider memory to be 2020 * low and start killing background services and other non-extraneous 2021 * processes. 2022 */ 2023 public long threshold; 2024 2025 /** 2026 * Set to true if the system considers itself to currently be in a low 2027 * memory situation. 2028 */ 2029 public boolean lowMemory; 2030 2031 /** @hide */ 2032 public long hiddenAppThreshold; 2033 /** @hide */ 2034 public long secondaryServerThreshold; 2035 /** @hide */ 2036 public long visibleAppThreshold; 2037 /** @hide */ 2038 public long foregroundAppThreshold; 2039 2040 public MemoryInfo() { 2041 } 2042 2043 public int describeContents() { 2044 return 0; 2045 } 2046 2047 public void writeToParcel(Parcel dest, int flags) { 2048 dest.writeLong(availMem); 2049 dest.writeLong(totalMem); 2050 dest.writeLong(threshold); 2051 dest.writeInt(lowMemory ? 1 : 0); 2052 dest.writeLong(hiddenAppThreshold); 2053 dest.writeLong(secondaryServerThreshold); 2054 dest.writeLong(visibleAppThreshold); 2055 dest.writeLong(foregroundAppThreshold); 2056 } 2057 2058 public void readFromParcel(Parcel source) { 2059 availMem = source.readLong(); 2060 totalMem = source.readLong(); 2061 threshold = source.readLong(); 2062 lowMemory = source.readInt() != 0; 2063 hiddenAppThreshold = source.readLong(); 2064 secondaryServerThreshold = source.readLong(); 2065 visibleAppThreshold = source.readLong(); 2066 foregroundAppThreshold = source.readLong(); 2067 } 2068 2069 public static final Creator<MemoryInfo> CREATOR 2070 = new Creator<MemoryInfo>() { 2071 public MemoryInfo createFromParcel(Parcel source) { 2072 return new MemoryInfo(source); 2073 } 2074 public MemoryInfo[] newArray(int size) { 2075 return new MemoryInfo[size]; 2076 } 2077 }; 2078 2079 private MemoryInfo(Parcel source) { 2080 readFromParcel(source); 2081 } 2082 } 2083 2084 /** 2085 * Return general information about the memory state of the system. This 2086 * can be used to help decide how to manage your own memory, though note 2087 * that polling is not recommended and 2088 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2089 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2090 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2091 * level of your process as needed, which gives a better hint for how to 2092 * manage its memory. 2093 */ 2094 public void getMemoryInfo(MemoryInfo outInfo) { 2095 try { 2096 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2097 } catch (RemoteException e) { 2098 } 2099 } 2100 2101 /** 2102 * Information you can retrieve about an ActivityStack in the system. 2103 * @hide 2104 */ 2105 public static class StackInfo implements Parcelable { 2106 public int stackId; 2107 public Rect bounds = new Rect(); 2108 public int[] taskIds; 2109 public String[] taskNames; 2110 public Rect[] taskBounds; 2111 public int displayId; 2112 2113 @Override 2114 public int describeContents() { 2115 return 0; 2116 } 2117 2118 @Override 2119 public void writeToParcel(Parcel dest, int flags) { 2120 dest.writeInt(stackId); 2121 dest.writeInt(bounds.left); 2122 dest.writeInt(bounds.top); 2123 dest.writeInt(bounds.right); 2124 dest.writeInt(bounds.bottom); 2125 dest.writeIntArray(taskIds); 2126 dest.writeStringArray(taskNames); 2127 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2128 dest.writeInt(boundsCount); 2129 for (int i = 0; i < boundsCount; i++) { 2130 dest.writeInt(taskBounds[i].left); 2131 dest.writeInt(taskBounds[i].top); 2132 dest.writeInt(taskBounds[i].right); 2133 dest.writeInt(taskBounds[i].bottom); 2134 } 2135 dest.writeInt(displayId); 2136 } 2137 2138 public void readFromParcel(Parcel source) { 2139 stackId = source.readInt(); 2140 bounds = new Rect( 2141 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2142 taskIds = source.createIntArray(); 2143 taskNames = source.createStringArray(); 2144 final int boundsCount = source.readInt(); 2145 if (boundsCount > 0) { 2146 taskBounds = new Rect[boundsCount]; 2147 for (int i = 0; i < boundsCount; i++) { 2148 taskBounds[i] = new Rect(); 2149 taskBounds[i].set( 2150 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2151 } 2152 } else { 2153 taskBounds = null; 2154 } 2155 displayId = source.readInt(); 2156 } 2157 2158 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2159 @Override 2160 public StackInfo createFromParcel(Parcel source) { 2161 return new StackInfo(source); 2162 } 2163 @Override 2164 public StackInfo[] newArray(int size) { 2165 return new StackInfo[size]; 2166 } 2167 }; 2168 2169 public StackInfo() { 2170 } 2171 2172 private StackInfo(Parcel source) { 2173 readFromParcel(source); 2174 } 2175 2176 public String toString(String prefix) { 2177 StringBuilder sb = new StringBuilder(256); 2178 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2179 sb.append(" bounds="); sb.append(bounds.toShortString()); 2180 sb.append(" displayId="); sb.append(displayId); 2181 sb.append("\n"); 2182 prefix = prefix + " "; 2183 for (int i = 0; i < taskIds.length; ++i) { 2184 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2185 sb.append(": "); sb.append(taskNames[i]); 2186 if (taskBounds != null) { 2187 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2188 } 2189 sb.append("\n"); 2190 } 2191 return sb.toString(); 2192 } 2193 2194 @Override 2195 public String toString() { 2196 return toString(""); 2197 } 2198 } 2199 2200 /** 2201 * @hide 2202 */ 2203 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2204 try { 2205 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2206 observer, UserHandle.myUserId()); 2207 } catch (RemoteException e) { 2208 return false; 2209 } 2210 } 2211 2212 /** 2213 * Permits an application to erase its own data from disk. This is equivalent to 2214 * the user choosing to clear the app's data from within the device settings UI. It 2215 * erases all dynamic data associated with the app -- its private data and data in its 2216 * private area on external storage -- but does not remove the installed application 2217 * itself, nor any OBB files. 2218 * 2219 * @return {@code true} if the application successfully requested that the application's 2220 * data be erased; {@code false} otherwise. 2221 */ 2222 public boolean clearApplicationUserData() { 2223 return clearApplicationUserData(mContext.getPackageName(), null); 2224 } 2225 2226 /** 2227 * Information you can retrieve about any processes that are in an error condition. 2228 */ 2229 public static class ProcessErrorStateInfo implements Parcelable { 2230 /** 2231 * Condition codes 2232 */ 2233 public static final int NO_ERROR = 0; 2234 public static final int CRASHED = 1; 2235 public static final int NOT_RESPONDING = 2; 2236 2237 /** 2238 * The condition that the process is in. 2239 */ 2240 public int condition; 2241 2242 /** 2243 * The process name in which the crash or error occurred. 2244 */ 2245 public String processName; 2246 2247 /** 2248 * The pid of this process; 0 if none 2249 */ 2250 public int pid; 2251 2252 /** 2253 * The kernel user-ID that has been assigned to this process; 2254 * currently this is not a unique ID (multiple applications can have 2255 * the same uid). 2256 */ 2257 public int uid; 2258 2259 /** 2260 * The activity name associated with the error, if known. May be null. 2261 */ 2262 public String tag; 2263 2264 /** 2265 * A short message describing the error condition. 2266 */ 2267 public String shortMsg; 2268 2269 /** 2270 * A long message describing the error condition. 2271 */ 2272 public String longMsg; 2273 2274 /** 2275 * The stack trace where the error originated. May be null. 2276 */ 2277 public String stackTrace; 2278 2279 /** 2280 * to be deprecated: This value will always be null. 2281 */ 2282 public byte[] crashData = null; 2283 2284 public ProcessErrorStateInfo() { 2285 } 2286 2287 @Override 2288 public int describeContents() { 2289 return 0; 2290 } 2291 2292 @Override 2293 public void writeToParcel(Parcel dest, int flags) { 2294 dest.writeInt(condition); 2295 dest.writeString(processName); 2296 dest.writeInt(pid); 2297 dest.writeInt(uid); 2298 dest.writeString(tag); 2299 dest.writeString(shortMsg); 2300 dest.writeString(longMsg); 2301 dest.writeString(stackTrace); 2302 } 2303 2304 public void readFromParcel(Parcel source) { 2305 condition = source.readInt(); 2306 processName = source.readString(); 2307 pid = source.readInt(); 2308 uid = source.readInt(); 2309 tag = source.readString(); 2310 shortMsg = source.readString(); 2311 longMsg = source.readString(); 2312 stackTrace = source.readString(); 2313 } 2314 2315 public static final Creator<ProcessErrorStateInfo> CREATOR = 2316 new Creator<ProcessErrorStateInfo>() { 2317 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2318 return new ProcessErrorStateInfo(source); 2319 } 2320 public ProcessErrorStateInfo[] newArray(int size) { 2321 return new ProcessErrorStateInfo[size]; 2322 } 2323 }; 2324 2325 private ProcessErrorStateInfo(Parcel source) { 2326 readFromParcel(source); 2327 } 2328 } 2329 2330 /** 2331 * Returns a list of any processes that are currently in an error condition. The result 2332 * will be null if all processes are running properly at this time. 2333 * 2334 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2335 * current error conditions (it will not return an empty list). This list ordering is not 2336 * specified. 2337 */ 2338 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2339 try { 2340 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2341 } catch (RemoteException e) { 2342 return null; 2343 } 2344 } 2345 2346 /** 2347 * Information you can retrieve about a running process. 2348 */ 2349 public static class RunningAppProcessInfo implements Parcelable { 2350 /** 2351 * The name of the process that this object is associated with 2352 */ 2353 public String processName; 2354 2355 /** 2356 * The pid of this process; 0 if none 2357 */ 2358 public int pid; 2359 2360 /** 2361 * The user id of this process. 2362 */ 2363 public int uid; 2364 2365 /** 2366 * All packages that have been loaded into the process. 2367 */ 2368 public String pkgList[]; 2369 2370 /** 2371 * Constant for {@link #flags}: this is an app that is unable to 2372 * correctly save its state when going to the background, 2373 * so it can not be killed while in the background. 2374 * @hide 2375 */ 2376 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2377 2378 /** 2379 * Constant for {@link #flags}: this process is associated with a 2380 * persistent system app. 2381 * @hide 2382 */ 2383 public static final int FLAG_PERSISTENT = 1<<1; 2384 2385 /** 2386 * Constant for {@link #flags}: this process is associated with a 2387 * persistent system app. 2388 * @hide 2389 */ 2390 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2391 2392 /** 2393 * Flags of information. May be any of 2394 * {@link #FLAG_CANT_SAVE_STATE}. 2395 * @hide 2396 */ 2397 public int flags; 2398 2399 /** 2400 * Last memory trim level reported to the process: corresponds to 2401 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2402 * ComponentCallbacks2.onTrimMemory(int)}. 2403 */ 2404 public int lastTrimLevel; 2405 2406 /** 2407 * Constant for {@link #importance}: This process is running the 2408 * foreground UI; that is, it is the thing currently at the top of the screen 2409 * that the user is interacting with. 2410 */ 2411 public static final int IMPORTANCE_FOREGROUND = 100; 2412 2413 /** 2414 * Constant for {@link #importance}: This process is running a foreground 2415 * service, for example to perform music playback even while the user is 2416 * not immediately in the app. This generally indicates that the process 2417 * is doing something the user actively cares about. 2418 */ 2419 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2420 2421 /** 2422 * Constant for {@link #importance}: This process is running the foreground 2423 * UI, but the device is asleep so it is not visible to the user. This means 2424 * the user is not really aware of the process, because they can not see or 2425 * interact with it, but it is quite important because it what they expect to 2426 * return to once unlocking the device. 2427 */ 2428 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2429 2430 /** 2431 * Constant for {@link #importance}: This process is running something 2432 * that is actively visible to the user, though not in the immediate 2433 * foreground. This may be running a window that is behind the current 2434 * foreground (so paused and with its state saved, not interacting with 2435 * the user, but visible to them to some degree); it may also be running 2436 * other services under the system's control that it inconsiders important. 2437 */ 2438 public static final int IMPORTANCE_VISIBLE = 200; 2439 2440 /** 2441 * Constant for {@link #importance}: This process is not something the user 2442 * is directly aware of, but is otherwise perceptable to them to some degree. 2443 */ 2444 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2445 2446 /** 2447 * Constant for {@link #importance}: This process is running an 2448 * application that can not save its state, and thus can't be killed 2449 * while in the background. 2450 * @hide 2451 */ 2452 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2453 2454 /** 2455 * Constant for {@link #importance}: This process is contains services 2456 * that should remain running. These are background services apps have 2457 * started, not something the user is aware of, so they may be killed by 2458 * the system relatively freely (though it is generally desired that they 2459 * stay running as long as they want to). 2460 */ 2461 public static final int IMPORTANCE_SERVICE = 300; 2462 2463 /** 2464 * Constant for {@link #importance}: This process process contains 2465 * background code that is expendable. 2466 */ 2467 public static final int IMPORTANCE_BACKGROUND = 400; 2468 2469 /** 2470 * Constant for {@link #importance}: This process is empty of any 2471 * actively running code. 2472 */ 2473 public static final int IMPORTANCE_EMPTY = 500; 2474 2475 /** 2476 * Constant for {@link #importance}: This process does not exist. 2477 */ 2478 public static final int IMPORTANCE_GONE = 1000; 2479 2480 /** @hide */ 2481 public static int procStateToImportance(int procState) { 2482 if (procState == PROCESS_STATE_NONEXISTENT) { 2483 return IMPORTANCE_GONE; 2484 } else if (procState >= PROCESS_STATE_HOME) { 2485 return IMPORTANCE_BACKGROUND; 2486 } else if (procState >= PROCESS_STATE_SERVICE) { 2487 return IMPORTANCE_SERVICE; 2488 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2489 return IMPORTANCE_CANT_SAVE_STATE; 2490 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2491 return IMPORTANCE_PERCEPTIBLE; 2492 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2493 return IMPORTANCE_VISIBLE; 2494 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2495 return IMPORTANCE_TOP_SLEEPING; 2496 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2497 return IMPORTANCE_FOREGROUND_SERVICE; 2498 } else { 2499 return IMPORTANCE_FOREGROUND; 2500 } 2501 } 2502 2503 /** 2504 * The relative importance level that the system places on this 2505 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2506 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2507 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2508 * constants are numbered so that "more important" values are always 2509 * smaller than "less important" values. 2510 */ 2511 public int importance; 2512 2513 /** 2514 * An additional ordering within a particular {@link #importance} 2515 * category, providing finer-grained information about the relative 2516 * utility of processes within a category. This number means nothing 2517 * except that a smaller values are more recently used (and thus 2518 * more important). Currently an LRU value is only maintained for 2519 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2520 * be maintained in the future. 2521 */ 2522 public int lru; 2523 2524 /** 2525 * Constant for {@link #importanceReasonCode}: nothing special has 2526 * been specified for the reason for this level. 2527 */ 2528 public static final int REASON_UNKNOWN = 0; 2529 2530 /** 2531 * Constant for {@link #importanceReasonCode}: one of the application's 2532 * content providers is being used by another process. The pid of 2533 * the client process is in {@link #importanceReasonPid} and the 2534 * target provider in this process is in 2535 * {@link #importanceReasonComponent}. 2536 */ 2537 public static final int REASON_PROVIDER_IN_USE = 1; 2538 2539 /** 2540 * Constant for {@link #importanceReasonCode}: one of the application's 2541 * content providers is being used by another process. The pid of 2542 * the client process is in {@link #importanceReasonPid} and the 2543 * target provider in this process is in 2544 * {@link #importanceReasonComponent}. 2545 */ 2546 public static final int REASON_SERVICE_IN_USE = 2; 2547 2548 /** 2549 * The reason for {@link #importance}, if any. 2550 */ 2551 public int importanceReasonCode; 2552 2553 /** 2554 * For the specified values of {@link #importanceReasonCode}, this 2555 * is the process ID of the other process that is a client of this 2556 * process. This will be 0 if no other process is using this one. 2557 */ 2558 public int importanceReasonPid; 2559 2560 /** 2561 * For the specified values of {@link #importanceReasonCode}, this 2562 * is the name of the component that is being used in this process. 2563 */ 2564 public ComponentName importanceReasonComponent; 2565 2566 /** 2567 * When {@link #importanceReasonPid} is non-0, this is the importance 2568 * of the other pid. @hide 2569 */ 2570 public int importanceReasonImportance; 2571 2572 /** 2573 * Current process state, as per PROCESS_STATE_* constants. 2574 * @hide 2575 */ 2576 public int processState; 2577 2578 public RunningAppProcessInfo() { 2579 importance = IMPORTANCE_FOREGROUND; 2580 importanceReasonCode = REASON_UNKNOWN; 2581 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2582 } 2583 2584 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2585 processName = pProcessName; 2586 pid = pPid; 2587 pkgList = pArr; 2588 } 2589 2590 public int describeContents() { 2591 return 0; 2592 } 2593 2594 public void writeToParcel(Parcel dest, int flags) { 2595 dest.writeString(processName); 2596 dest.writeInt(pid); 2597 dest.writeInt(uid); 2598 dest.writeStringArray(pkgList); 2599 dest.writeInt(this.flags); 2600 dest.writeInt(lastTrimLevel); 2601 dest.writeInt(importance); 2602 dest.writeInt(lru); 2603 dest.writeInt(importanceReasonCode); 2604 dest.writeInt(importanceReasonPid); 2605 ComponentName.writeToParcel(importanceReasonComponent, dest); 2606 dest.writeInt(importanceReasonImportance); 2607 dest.writeInt(processState); 2608 } 2609 2610 public void readFromParcel(Parcel source) { 2611 processName = source.readString(); 2612 pid = source.readInt(); 2613 uid = source.readInt(); 2614 pkgList = source.readStringArray(); 2615 flags = source.readInt(); 2616 lastTrimLevel = source.readInt(); 2617 importance = source.readInt(); 2618 lru = source.readInt(); 2619 importanceReasonCode = source.readInt(); 2620 importanceReasonPid = source.readInt(); 2621 importanceReasonComponent = ComponentName.readFromParcel(source); 2622 importanceReasonImportance = source.readInt(); 2623 processState = source.readInt(); 2624 } 2625 2626 public static final Creator<RunningAppProcessInfo> CREATOR = 2627 new Creator<RunningAppProcessInfo>() { 2628 public RunningAppProcessInfo createFromParcel(Parcel source) { 2629 return new RunningAppProcessInfo(source); 2630 } 2631 public RunningAppProcessInfo[] newArray(int size) { 2632 return new RunningAppProcessInfo[size]; 2633 } 2634 }; 2635 2636 private RunningAppProcessInfo(Parcel source) { 2637 readFromParcel(source); 2638 } 2639 } 2640 2641 /** 2642 * Returns a list of application processes installed on external media 2643 * that are running on the device. 2644 * 2645 * <p><b>Note: this method is only intended for debugging or building 2646 * a user-facing process management UI.</b></p> 2647 * 2648 * @return Returns a list of ApplicationInfo records, or null if none 2649 * This list ordering is not specified. 2650 * @hide 2651 */ 2652 public List<ApplicationInfo> getRunningExternalApplications() { 2653 try { 2654 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2655 } catch (RemoteException e) { 2656 return null; 2657 } 2658 } 2659 2660 /** 2661 * Sets the memory trim mode for a process and schedules a memory trim operation. 2662 * 2663 * <p><b>Note: this method is only intended for testing framework.</b></p> 2664 * 2665 * @return Returns true if successful. 2666 * @hide 2667 */ 2668 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2669 try { 2670 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2671 level); 2672 } catch (RemoteException e) { 2673 return false; 2674 } 2675 } 2676 2677 /** 2678 * Returns a list of application processes that are running on the device. 2679 * 2680 * <p><b>Note: this method is only intended for debugging or building 2681 * a user-facing process management UI.</b></p> 2682 * 2683 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2684 * running processes (it will not return an empty list). This list ordering is not 2685 * specified. 2686 */ 2687 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2688 try { 2689 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2690 } catch (RemoteException e) { 2691 return null; 2692 } 2693 } 2694 2695 /** 2696 * Return the importance of a given package name, based on the processes that are 2697 * currently running. The return value is one of the importance constants defined 2698 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2699 * processes that this package has code running inside of. If there are no processes 2700 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2701 * @hide 2702 */ 2703 @SystemApi 2704 public int getPackageImportance(String packageName) { 2705 try { 2706 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2707 mContext.getOpPackageName()); 2708 return RunningAppProcessInfo.procStateToImportance(procState); 2709 } catch (RemoteException e) { 2710 return RunningAppProcessInfo.IMPORTANCE_GONE; 2711 } 2712 } 2713 2714 /** 2715 * Return global memory state information for the calling process. This 2716 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2717 * only fields that will be filled in are 2718 * {@link RunningAppProcessInfo#pid}, 2719 * {@link RunningAppProcessInfo#uid}, 2720 * {@link RunningAppProcessInfo#lastTrimLevel}, 2721 * {@link RunningAppProcessInfo#importance}, 2722 * {@link RunningAppProcessInfo#lru}, and 2723 * {@link RunningAppProcessInfo#importanceReasonCode}. 2724 */ 2725 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2726 try { 2727 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2728 } catch (RemoteException e) { 2729 } 2730 } 2731 2732 /** 2733 * Return information about the memory usage of one or more processes. 2734 * 2735 * <p><b>Note: this method is only intended for debugging or building 2736 * a user-facing process management UI.</b></p> 2737 * 2738 * @param pids The pids of the processes whose memory usage is to be 2739 * retrieved. 2740 * @return Returns an array of memory information, one for each 2741 * requested pid. 2742 */ 2743 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2744 try { 2745 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2746 } catch (RemoteException e) { 2747 return null; 2748 } 2749 } 2750 2751 /** 2752 * @deprecated This is now just a wrapper for 2753 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2754 * is no longer available to applications because it allows them to 2755 * break other applications by removing their alarms, stopping their 2756 * services, etc. 2757 */ 2758 @Deprecated 2759 public void restartPackage(String packageName) { 2760 killBackgroundProcesses(packageName); 2761 } 2762 2763 /** 2764 * Have the system immediately kill all background processes associated 2765 * with the given package. This is the same as the kernel killing those 2766 * processes to reclaim memory; the system will take care of restarting 2767 * these processes in the future as needed. 2768 * 2769 * <p>You must hold the permission 2770 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2771 * call this method. 2772 * 2773 * @param packageName The name of the package whose processes are to 2774 * be killed. 2775 */ 2776 public void killBackgroundProcesses(String packageName) { 2777 try { 2778 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2779 UserHandle.myUserId()); 2780 } catch (RemoteException e) { 2781 } 2782 } 2783 2784 /** 2785 * Kills the specified UID. 2786 * @param uid The UID to kill. 2787 * @param reason The reason for the kill. 2788 * 2789 * @hide 2790 */ 2791 @RequiresPermission(Manifest.permission.KILL_UID) 2792 public void killUid(int uid, String reason) { 2793 try { 2794 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2795 UserHandle.getUserId(uid), reason); 2796 } catch (RemoteException e) { 2797 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2798 } 2799 } 2800 2801 /** 2802 * Have the system perform a force stop of everything associated with 2803 * the given application package. All processes that share its uid 2804 * will be killed, all services it has running stopped, all activities 2805 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2806 * broadcast will be sent, so that any of its registered alarms can 2807 * be stopped, notifications removed, etc. 2808 * 2809 * <p>You must hold the permission 2810 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2811 * call this method. 2812 * 2813 * @param packageName The name of the package to be stopped. 2814 * @param userId The user for which the running package is to be stopped. 2815 * 2816 * @hide This is not available to third party applications due to 2817 * it allowing them to break other applications by stopping their 2818 * services, removing their alarms, etc. 2819 */ 2820 public void forceStopPackageAsUser(String packageName, int userId) { 2821 try { 2822 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2823 } catch (RemoteException e) { 2824 } 2825 } 2826 2827 /** 2828 * @see #forceStopPackageAsUser(String, int) 2829 * @hide 2830 */ 2831 public void forceStopPackage(String packageName) { 2832 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2833 } 2834 2835 /** 2836 * Get the device configuration attributes. 2837 */ 2838 public ConfigurationInfo getDeviceConfigurationInfo() { 2839 try { 2840 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2841 } catch (RemoteException e) { 2842 } 2843 return null; 2844 } 2845 2846 /** 2847 * Get the preferred density of icons for the launcher. This is used when 2848 * custom drawables are created (e.g., for shortcuts). 2849 * 2850 * @return density in terms of DPI 2851 */ 2852 public int getLauncherLargeIconDensity() { 2853 final Resources res = mContext.getResources(); 2854 final int density = res.getDisplayMetrics().densityDpi; 2855 final int sw = res.getConfiguration().smallestScreenWidthDp; 2856 2857 if (sw < 600) { 2858 // Smaller than approx 7" tablets, use the regular icon size. 2859 return density; 2860 } 2861 2862 switch (density) { 2863 case DisplayMetrics.DENSITY_LOW: 2864 return DisplayMetrics.DENSITY_MEDIUM; 2865 case DisplayMetrics.DENSITY_MEDIUM: 2866 return DisplayMetrics.DENSITY_HIGH; 2867 case DisplayMetrics.DENSITY_TV: 2868 return DisplayMetrics.DENSITY_XHIGH; 2869 case DisplayMetrics.DENSITY_HIGH: 2870 return DisplayMetrics.DENSITY_XHIGH; 2871 case DisplayMetrics.DENSITY_XHIGH: 2872 return DisplayMetrics.DENSITY_XXHIGH; 2873 case DisplayMetrics.DENSITY_XXHIGH: 2874 return DisplayMetrics.DENSITY_XHIGH * 2; 2875 default: 2876 // The density is some abnormal value. Return some other 2877 // abnormal value that is a reasonable scaling of it. 2878 return (int)((density*1.5f)+.5f); 2879 } 2880 } 2881 2882 /** 2883 * Get the preferred launcher icon size. This is used when custom drawables 2884 * are created (e.g., for shortcuts). 2885 * 2886 * @return dimensions of square icons in terms of pixels 2887 */ 2888 public int getLauncherLargeIconSize() { 2889 return getLauncherLargeIconSizeInner(mContext); 2890 } 2891 2892 static int getLauncherLargeIconSizeInner(Context context) { 2893 final Resources res = context.getResources(); 2894 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2895 final int sw = res.getConfiguration().smallestScreenWidthDp; 2896 2897 if (sw < 600) { 2898 // Smaller than approx 7" tablets, use the regular icon size. 2899 return size; 2900 } 2901 2902 final int density = res.getDisplayMetrics().densityDpi; 2903 2904 switch (density) { 2905 case DisplayMetrics.DENSITY_LOW: 2906 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2907 case DisplayMetrics.DENSITY_MEDIUM: 2908 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2909 case DisplayMetrics.DENSITY_TV: 2910 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2911 case DisplayMetrics.DENSITY_HIGH: 2912 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2913 case DisplayMetrics.DENSITY_XHIGH: 2914 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2915 case DisplayMetrics.DENSITY_XXHIGH: 2916 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2917 default: 2918 // The density is some abnormal value. Return some other 2919 // abnormal value that is a reasonable scaling of it. 2920 return (int)((size*1.5f) + .5f); 2921 } 2922 } 2923 2924 /** 2925 * Returns "true" if the user interface is currently being messed with 2926 * by a monkey. 2927 */ 2928 public static boolean isUserAMonkey() { 2929 try { 2930 return ActivityManagerNative.getDefault().isUserAMonkey(); 2931 } catch (RemoteException e) { 2932 } 2933 return false; 2934 } 2935 2936 /** 2937 * Returns "true" if device is running in a test harness. 2938 */ 2939 public static boolean isRunningInTestHarness() { 2940 return SystemProperties.getBoolean("ro.test_harness", false); 2941 } 2942 2943 /** 2944 * Returns the launch count of each installed package. 2945 * 2946 * @hide 2947 */ 2948 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2949 try { 2950 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2951 ServiceManager.getService("usagestats")); 2952 if (usageStatsService == null) { 2953 return new HashMap<String, Integer>(); 2954 } 2955 2956 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2957 ActivityThread.currentPackageName()); 2958 if (allPkgUsageStats == null) { 2959 return new HashMap<String, Integer>(); 2960 } 2961 2962 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2963 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2964 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2965 } 2966 2967 return launchCounts; 2968 } catch (RemoteException e) { 2969 Log.w(TAG, "Could not query launch counts", e); 2970 return new HashMap<String, Integer>(); 2971 } 2972 }*/ 2973 2974 /** @hide */ 2975 public static int checkComponentPermission(String permission, int uid, 2976 int owningUid, boolean exported) { 2977 // Root, system server get to do everything. 2978 final int appId = UserHandle.getAppId(uid); 2979 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2980 return PackageManager.PERMISSION_GRANTED; 2981 } 2982 // Isolated processes don't get any permissions. 2983 if (UserHandle.isIsolated(uid)) { 2984 return PackageManager.PERMISSION_DENIED; 2985 } 2986 // If there is a uid that owns whatever is being accessed, it has 2987 // blanket access to it regardless of the permissions it requires. 2988 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2989 return PackageManager.PERMISSION_GRANTED; 2990 } 2991 // If the target is not exported, then nobody else can get to it. 2992 if (!exported) { 2993 /* 2994 RuntimeException here = new RuntimeException("here"); 2995 here.fillInStackTrace(); 2996 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2997 here); 2998 */ 2999 return PackageManager.PERMISSION_DENIED; 3000 } 3001 if (permission == null) { 3002 return PackageManager.PERMISSION_GRANTED; 3003 } 3004 try { 3005 return AppGlobals.getPackageManager() 3006 .checkUidPermission(permission, uid); 3007 } catch (RemoteException e) { 3008 // Should never happen, but if it does... deny! 3009 Slog.e(TAG, "PackageManager is dead?!?", e); 3010 } 3011 return PackageManager.PERMISSION_DENIED; 3012 } 3013 3014 /** @hide */ 3015 public static int checkUidPermission(String permission, int uid) { 3016 try { 3017 return AppGlobals.getPackageManager() 3018 .checkUidPermission(permission, uid); 3019 } catch (RemoteException e) { 3020 // Should never happen, but if it does... deny! 3021 Slog.e(TAG, "PackageManager is dead?!?", e); 3022 } 3023 return PackageManager.PERMISSION_DENIED; 3024 } 3025 3026 /** 3027 * @hide 3028 * Helper for dealing with incoming user arguments to system service calls. 3029 * Takes care of checking permissions and converting USER_CURRENT to the 3030 * actual current user. 3031 * 3032 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3033 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3034 * @param userId The user id argument supplied by the caller -- this is the user 3035 * they want to run as. 3036 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3037 * to get a USER_ALL returned and deal with it correctly. If false, 3038 * an exception will be thrown if USER_ALL is supplied. 3039 * @param requireFull If true, the caller must hold 3040 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3041 * different user than their current process; otherwise they must hold 3042 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3043 * @param name Optional textual name of the incoming call; only for generating error messages. 3044 * @param callerPackage Optional package name of caller; only for error messages. 3045 * 3046 * @return Returns the user ID that the call should run as. Will always be a concrete 3047 * user number, unless <var>allowAll</var> is true in which case it could also be 3048 * USER_ALL. 3049 */ 3050 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3051 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3052 if (UserHandle.getUserId(callingUid) == userId) { 3053 return userId; 3054 } 3055 try { 3056 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3057 callingUid, userId, allowAll, requireFull, name, callerPackage); 3058 } catch (RemoteException e) { 3059 throw new SecurityException("Failed calling activity manager", e); 3060 } 3061 } 3062 3063 /** 3064 * Gets the userId of the current foreground user. Requires system permissions. 3065 * @hide 3066 */ 3067 @SystemApi 3068 public static int getCurrentUser() { 3069 UserInfo ui; 3070 try { 3071 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3072 return ui != null ? ui.id : 0; 3073 } catch (RemoteException e) { 3074 return 0; 3075 } 3076 } 3077 3078 /** 3079 * @param userid the user's id. Zero indicates the default user. 3080 * @hide 3081 */ 3082 public boolean switchUser(int userid) { 3083 try { 3084 return ActivityManagerNative.getDefault().switchUser(userid); 3085 } catch (RemoteException e) { 3086 return false; 3087 } 3088 } 3089 3090 /** {@hide} */ 3091 public static final int FLAG_OR_STOPPED = 1 << 0; 3092 /** {@hide} */ 3093 public static final int FLAG_AND_LOCKED = 1 << 1; 3094 3095 /** 3096 * Return whether the given user is actively running. This means that 3097 * the user is in the "started" state, not "stopped" -- it is currently 3098 * allowed to run code through scheduled alarms, receiving broadcasts, 3099 * etc. A started user may be either the current foreground user or a 3100 * background user; the result here does not distinguish between the two. 3101 * @param userid the user's id. Zero indicates the default user. 3102 * @hide 3103 */ 3104 public boolean isUserRunning(int userid) { 3105 try { 3106 return ActivityManagerNative.getDefault().isUserRunning(userid, 0); 3107 } catch (RemoteException e) { 3108 return false; 3109 } 3110 } 3111 3112 /** 3113 * Perform a system dump of various state associated with the given application 3114 * package name. This call blocks while the dump is being performed, so should 3115 * not be done on a UI thread. The data will be written to the given file 3116 * descriptor as text. An application must hold the 3117 * {@link android.Manifest.permission#DUMP} permission to make this call. 3118 * @param fd The file descriptor that the dump should be written to. The file 3119 * descriptor is <em>not</em> closed by this function; the caller continues to 3120 * own it. 3121 * @param packageName The name of the package that is to be dumped. 3122 */ 3123 public void dumpPackageState(FileDescriptor fd, String packageName) { 3124 dumpPackageStateStatic(fd, packageName); 3125 } 3126 3127 /** 3128 * @hide 3129 */ 3130 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3131 FileOutputStream fout = new FileOutputStream(fd); 3132 PrintWriter pw = new FastPrintWriter(fout); 3133 dumpService(pw, fd, "package", new String[] { packageName }); 3134 pw.println(); 3135 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3136 "-a", "package", packageName }); 3137 pw.println(); 3138 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3139 pw.println(); 3140 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3141 pw.println(); 3142 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3143 pw.println(); 3144 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3145 pw.flush(); 3146 } 3147 3148 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3149 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3150 IBinder service = ServiceManager.checkService(name); 3151 if (service == null) { 3152 pw.println(" (Service not found)"); 3153 return; 3154 } 3155 TransferPipe tp = null; 3156 try { 3157 pw.flush(); 3158 tp = new TransferPipe(); 3159 tp.setBufferPrefix(" "); 3160 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3161 tp.go(fd, 10000); 3162 } catch (Throwable e) { 3163 if (tp != null) { 3164 tp.kill(); 3165 } 3166 pw.println("Failure dumping service:"); 3167 e.printStackTrace(pw); 3168 } 3169 } 3170 3171 /** 3172 * Request that the system start watching for the calling process to exceed a pss 3173 * size as given here. Once called, the system will look for any occasions where it 3174 * sees the associated process with a larger pss size and, when this happens, automatically 3175 * pull a heap dump from it and allow the user to share the data. Note that this request 3176 * continues running even if the process is killed and restarted. To remove the watch, 3177 * use {@link #clearWatchHeapLimit()}. 3178 * 3179 * <p>This API only work if the calling process has been marked as 3180 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3181 * (userdebug or eng) build.</p> 3182 * 3183 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3184 * handle heap limit reports themselves.</p> 3185 * 3186 * @param pssSize The size in bytes to set the limit at. 3187 */ 3188 public void setWatchHeapLimit(long pssSize) { 3189 try { 3190 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3191 mContext.getPackageName()); 3192 } catch (RemoteException e) { 3193 } 3194 } 3195 3196 /** 3197 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3198 * If your package has an activity handling this action, it will be launched with the 3199 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3200 * match the activty must support this action and a MIME type of "*/*". 3201 */ 3202 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3203 3204 /** 3205 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3206 */ 3207 public void clearWatchHeapLimit() { 3208 try { 3209 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3210 } catch (RemoteException e) { 3211 } 3212 } 3213 3214 /** 3215 * @hide 3216 */ 3217 public void startLockTaskMode(int taskId) { 3218 try { 3219 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3220 } catch (RemoteException e) { 3221 } 3222 } 3223 3224 /** 3225 * @hide 3226 */ 3227 public void stopLockTaskMode() { 3228 try { 3229 ActivityManagerNative.getDefault().stopLockTaskMode(); 3230 } catch (RemoteException e) { 3231 } 3232 } 3233 3234 /** 3235 * Return whether currently in lock task mode. When in this mode 3236 * no new tasks can be created or switched to. 3237 * 3238 * @see Activity#startLockTask() 3239 * 3240 * @deprecated Use {@link #getLockTaskModeState} instead. 3241 */ 3242 public boolean isInLockTaskMode() { 3243 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3244 } 3245 3246 /** 3247 * Return the current state of task locking. The three possible outcomes 3248 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3249 * and {@link #LOCK_TASK_MODE_PINNED}. 3250 * 3251 * @see Activity#startLockTask() 3252 */ 3253 public int getLockTaskModeState() { 3254 try { 3255 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3256 } catch (RemoteException e) { 3257 return ActivityManager.LOCK_TASK_MODE_NONE; 3258 } 3259 } 3260 3261 /** 3262 * The AppTask allows you to manage your own application's tasks. 3263 * See {@link android.app.ActivityManager#getAppTasks()} 3264 */ 3265 public static class AppTask { 3266 private IAppTask mAppTaskImpl; 3267 3268 /** @hide */ 3269 public AppTask(IAppTask task) { 3270 mAppTaskImpl = task; 3271 } 3272 3273 /** 3274 * Finishes all activities in this task and removes it from the recent tasks list. 3275 */ 3276 public void finishAndRemoveTask() { 3277 try { 3278 mAppTaskImpl.finishAndRemoveTask(); 3279 } catch (RemoteException e) { 3280 Slog.e(TAG, "Invalid AppTask", e); 3281 } 3282 } 3283 3284 /** 3285 * Get the RecentTaskInfo associated with this task. 3286 * 3287 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3288 */ 3289 public RecentTaskInfo getTaskInfo() { 3290 try { 3291 return mAppTaskImpl.getTaskInfo(); 3292 } catch (RemoteException e) { 3293 Slog.e(TAG, "Invalid AppTask", e); 3294 return null; 3295 } 3296 } 3297 3298 /** 3299 * Bring this task to the foreground. If it contains activities, they will be 3300 * brought to the foreground with it and their instances re-created if needed. 3301 * If it doesn't contain activities, the root activity of the task will be 3302 * re-launched. 3303 */ 3304 public void moveToFront() { 3305 try { 3306 mAppTaskImpl.moveToFront(); 3307 } catch (RemoteException e) { 3308 Slog.e(TAG, "Invalid AppTask", e); 3309 } 3310 } 3311 3312 /** 3313 * Start an activity in this task. Brings the task to the foreground. If this task 3314 * is not currently active (that is, its id < 0), then a new activity for the given 3315 * Intent will be launched as the root of the task and the task brought to the 3316 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3317 * an activity to launch in a new task, then a new activity for the given Intent will 3318 * be launched on top of the task and the task brought to the foreground. If this 3319 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3320 * or would otherwise be launched in to a new task, then the activity not launched but 3321 * this task be brought to the foreground and a new intent delivered to the top 3322 * activity if appropriate. 3323 * 3324 * <p>In other words, you generally want to use an Intent here that does not specify 3325 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3326 * and let the system do the right thing.</p> 3327 * 3328 * @param intent The Intent describing the new activity to be launched on the task. 3329 * @param options Optional launch options. 3330 * 3331 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3332 */ 3333 public void startActivity(Context context, Intent intent, Bundle options) { 3334 ActivityThread thread = ActivityThread.currentActivityThread(); 3335 thread.getInstrumentation().execStartActivityFromAppTask(context, 3336 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3337 } 3338 3339 /** 3340 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3341 * Intent of this AppTask. 3342 * 3343 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3344 * be set; otherwise, it will be cleared. 3345 */ 3346 public void setExcludeFromRecents(boolean exclude) { 3347 try { 3348 mAppTaskImpl.setExcludeFromRecents(exclude); 3349 } catch (RemoteException e) { 3350 Slog.e(TAG, "Invalid AppTask", e); 3351 } 3352 } 3353 } 3354} 3355