ActivityManager.java revision bef28feba57be7fd6a4d14a85a8229154338b2ed
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 Process does not exist. */ 269 public static final int PROCESS_STATE_NONEXISTENT = -1; 270 271 /** @hide Process is a persistent system process. */ 272 public static final int PROCESS_STATE_PERSISTENT = 0; 273 274 /** @hide Process is a persistent system process and is doing UI. */ 275 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 276 277 /** @hide Process is hosting the current top activities. Note that this covers 278 * all activities that are visible to the user. */ 279 public static final int PROCESS_STATE_TOP = 2; 280 281 /** @hide Process is hosting a foreground service due to a system binding. */ 282 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 283 284 /** @hide Process is hosting a foreground service. */ 285 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 286 287 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 288 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 289 290 /** @hide Process is important to the user, and something they are aware of. */ 291 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 292 293 /** @hide Process is important to the user, but not something they are aware of. */ 294 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 295 296 /** @hide Process is in the background running a backup/restore operation. */ 297 public static final int PROCESS_STATE_BACKUP = 8; 298 299 /** @hide Process is in the background, but it can't restore its state so we want 300 * to try to avoid killing it. */ 301 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 302 303 /** @hide Process is in the background running a service. Unlike oom_adj, this level 304 * is used for both the normal running in background state and the executing 305 * operations state. */ 306 public static final int PROCESS_STATE_SERVICE = 10; 307 308 /** @hide Process is in the background running a receiver. Note that from the 309 * perspective of oom_adj receivers run at a higher foreground level, but for our 310 * prioritization here that is not necessary and putting them below services means 311 * many fewer changes in some process states as they receive broadcasts. */ 312 public static final int PROCESS_STATE_RECEIVER = 11; 313 314 /** @hide Process is in the background but hosts the home activity. */ 315 public static final int PROCESS_STATE_HOME = 12; 316 317 /** @hide Process is in the background but hosts the last shown activity. */ 318 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 319 320 /** @hide Process is being cached for later use and contains activities. */ 321 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 322 323 /** @hide Process is being cached for later use and is a client of another cached 324 * process that contains activities. */ 325 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 326 327 /** @hide Process is being cached for later use and is empty. */ 328 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 329 330 /** @hide Should this process state be considered a background state? */ 331 public static final boolean isProcStateBackground(int procState) { 332 return procState >= PROCESS_STATE_BACKUP; 333 } 334 335 /** @hide requestType for assist context: only basic information. */ 336 public static final int ASSIST_CONTEXT_BASIC = 0; 337 338 /** @hide requestType for assist context: generate full AssistStructure. */ 339 public static final int ASSIST_CONTEXT_FULL = 1; 340 341 /** @hide Flag for registerUidObserver: report changes in process state. */ 342 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 343 344 /** @hide Flag for registerUidObserver: report uid gone. */ 345 public static final int UID_OBSERVER_GONE = 1<<1; 346 347 /** @hide Flag for registerUidObserver: report uid has become idle. */ 348 public static final int UID_OBSERVER_IDLE = 1<<2; 349 350 /** @hide Flag for registerUidObserver: report uid has become active. */ 351 public static final int UID_OBSERVER_ACTIVE = 1<<3; 352 353 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 354 public static final int APP_START_MODE_NORMAL = 0; 355 356 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 357 public static final int APP_START_MODE_DELAYED = 1; 358 359 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 360 * launches. */ 361 public static final int APP_START_MODE_DISABLED = 2; 362 363 /** 364 * Lock task mode is not active. 365 */ 366 public static final int LOCK_TASK_MODE_NONE = 0; 367 368 /** 369 * Full lock task mode is active. 370 */ 371 public static final int LOCK_TASK_MODE_LOCKED = 1; 372 373 /** 374 * App pinning mode is active. 375 */ 376 public static final int LOCK_TASK_MODE_PINNED = 2; 377 378 Point mAppTaskThumbnailSize; 379 380 /*package*/ ActivityManager(Context context, Handler handler) { 381 mContext = context; 382 mHandler = handler; 383 } 384 385 /** 386 * Screen compatibility mode: the application most always run in 387 * compatibility mode. 388 * @hide 389 */ 390 public static final int COMPAT_MODE_ALWAYS = -1; 391 392 /** 393 * Screen compatibility mode: the application can never run in 394 * compatibility mode. 395 * @hide 396 */ 397 public static final int COMPAT_MODE_NEVER = -2; 398 399 /** 400 * Screen compatibility mode: unknown. 401 * @hide 402 */ 403 public static final int COMPAT_MODE_UNKNOWN = -3; 404 405 /** 406 * Screen compatibility mode: the application currently has compatibility 407 * mode disabled. 408 * @hide 409 */ 410 public static final int COMPAT_MODE_DISABLED = 0; 411 412 /** 413 * Screen compatibility mode: the application currently has compatibility 414 * mode enabled. 415 * @hide 416 */ 417 public static final int COMPAT_MODE_ENABLED = 1; 418 419 /** 420 * Screen compatibility mode: request to toggle the application's 421 * compatibility mode. 422 * @hide 423 */ 424 public static final int COMPAT_MODE_TOGGLE = 2; 425 426 /** @hide */ 427 public static class StackId { 428 /** Invalid stack ID. */ 429 public static final int INVALID_STACK_ID = -1; 430 431 /** First static stack ID. */ 432 public static final int FIRST_STATIC_STACK_ID = 0; 433 434 /** Home activity stack ID. */ 435 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 436 437 /** ID of stack where fullscreen activities are normally launched into. */ 438 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 439 440 /** ID of stack where freeform/resized activities are normally launched into. */ 441 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 442 443 /** ID of stack that occupies a dedicated region of the screen. */ 444 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 445 446 /** ID of stack that always on top (always visible) when it exist. */ 447 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 448 449 /** Last static stack stack ID. */ 450 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 451 452 /** Start of ID range used by stacks that are created dynamically. */ 453 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 454 455 public static boolean isStaticStack(int stackId) { 456 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 457 } 458 459 /** 460 * Returns true if the activities contained in the input stack display a shadow around 461 * their border. 462 */ 463 public static boolean hasWindowShadow(int stackId) { 464 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 465 } 466 467 /** 468 * Returns true if the activities contained in the input stack display a decor view. 469 */ 470 public static boolean hasWindowDecor(int stackId) { 471 return stackId == FREEFORM_WORKSPACE_STACK_ID; 472 } 473 474 /** 475 * Returns true if the tasks contained in the stack can be resized independently of the 476 * stack. 477 */ 478 public static boolean isTaskResizeAllowed(int stackId) { 479 return stackId == FREEFORM_WORKSPACE_STACK_ID; 480 } 481 482 /** 483 * Returns true if the task bounds should persist across power cycles. 484 */ 485 public static boolean persistTaskBounds(int stackId) { 486 return isStaticStack(stackId) && 487 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 488 } 489 490 /** 491 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 492 */ 493 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 494 return stackId == PINNED_STACK_ID; 495 } 496 497 /** 498 * Returns true if we try to maintain focus in the current stack when the top activity 499 * finishes. 500 */ 501 public static boolean keepFocusInStackIfPossible(int stackId) { 502 return stackId == FREEFORM_WORKSPACE_STACK_ID 503 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 504 } 505 506 /** 507 * Returns true if Stack size is affected by the docked stack changing size. 508 */ 509 public static boolean isResizeableByDockedStack(int stackId) { 510 return isStaticStack(stackId) && 511 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 512 } 513 514 /** 515 * Returns true if the size of tasks in the input stack are affected by the docked stack 516 * changing size. 517 */ 518 public static boolean isTaskResizeableByDockedStack(int stackId) { 519 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 520 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 521 } 522 523 /** 524 * Returns true if the windows of tasks being moved to this stack should be preserved so 525 * there isn't a display gap. 526 */ 527 public static boolean preserveWindowOnTaskMove(int stackId) { 528 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 529 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 530 } 531 } 532 533 /** 534 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 535 * specifies the position of the created docked stack at the top half of the screen if 536 * in portrait mode or at the left half of the screen if in landscape mode. 537 * @hide 538 */ 539 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 540 541 /** 542 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 543 * specifies the position of the created docked stack at the bottom half of the screen if 544 * in portrait mode or at the right half of the screen if in landscape mode. 545 * @hide 546 */ 547 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 548 549 /** 550 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 551 * that the resize doesn't need to preserve the window, and can be skipped if bounds 552 * is unchanged. This mode is used by window manager in most cases. 553 * @hide 554 */ 555 public static final int RESIZE_MODE_SYSTEM = 0; 556 557 /** 558 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 559 * that the resize should preserve the window if possible. 560 * @hide 561 */ 562 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 563 564 /** 565 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 566 * that the resize should be performed even if the bounds appears unchanged. 567 * @hide 568 */ 569 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 570 571 /** 572 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 573 * manager during a screen rotation. 574 * @hide 575 */ 576 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 577 578 /** 579 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 580 * resize is due to a drag action. 581 * @hide 582 */ 583 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 584 585 /** 586 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 587 * that the resize should preserve the window if possible, and should not be skipped 588 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 589 * is ending. 590 * @hide 591 */ 592 public static final int RESIZE_MODE_USER_FORCED = 593 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 594 595 /** @hide */ 596 public int getFrontActivityScreenCompatMode() { 597 try { 598 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 599 } catch (RemoteException e) { 600 // System dead, we will be dead too soon! 601 return 0; 602 } 603 } 604 605 /** @hide */ 606 public void setFrontActivityScreenCompatMode(int mode) { 607 try { 608 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 609 } catch (RemoteException e) { 610 // System dead, we will be dead too soon! 611 } 612 } 613 614 /** @hide */ 615 public int getPackageScreenCompatMode(String packageName) { 616 try { 617 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 618 } catch (RemoteException e) { 619 // System dead, we will be dead too soon! 620 return 0; 621 } 622 } 623 624 /** @hide */ 625 public void setPackageScreenCompatMode(String packageName, int mode) { 626 try { 627 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 628 } catch (RemoteException e) { 629 // System dead, we will be dead too soon! 630 } 631 } 632 633 /** @hide */ 634 public boolean getPackageAskScreenCompat(String packageName) { 635 try { 636 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 637 } catch (RemoteException e) { 638 // System dead, we will be dead too soon! 639 return false; 640 } 641 } 642 643 /** @hide */ 644 public void setPackageAskScreenCompat(String packageName, boolean ask) { 645 try { 646 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 647 } catch (RemoteException e) { 648 // System dead, we will be dead too soon! 649 } 650 } 651 652 /** 653 * Return the approximate per-application memory class of the current 654 * device. This gives you an idea of how hard a memory limit you should 655 * impose on your application to let the overall system work best. The 656 * returned value is in megabytes; the baseline Android memory class is 657 * 16 (which happens to be the Java heap limit of those devices); some 658 * device with more memory may return 24 or even higher numbers. 659 */ 660 public int getMemoryClass() { 661 return staticGetMemoryClass(); 662 } 663 664 /** @hide */ 665 static public int staticGetMemoryClass() { 666 // Really brain dead right now -- just take this from the configured 667 // vm heap size, and assume it is in megabytes and thus ends with "m". 668 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 669 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 670 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 671 } 672 return staticGetLargeMemoryClass(); 673 } 674 675 /** 676 * Return the approximate per-application memory class of the current 677 * device when an application is running with a large heap. This is the 678 * space available for memory-intensive applications; most applications 679 * should not need this amount of memory, and should instead stay with the 680 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 681 * This may be the same size as {@link #getMemoryClass()} on memory 682 * constrained devices, or it may be significantly larger on devices with 683 * a large amount of available RAM. 684 * 685 * <p>The is the size of the application's Dalvik heap if it has 686 * specified <code>android:largeHeap="true"</code> in its manifest. 687 */ 688 public int getLargeMemoryClass() { 689 return staticGetLargeMemoryClass(); 690 } 691 692 /** @hide */ 693 static public int staticGetLargeMemoryClass() { 694 // Really brain dead right now -- just take this from the configured 695 // vm heap size, and assume it is in megabytes and thus ends with "m". 696 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 697 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 698 } 699 700 /** 701 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 702 * is ultimately up to the device configuration, but currently it generally means 703 * something in the class of a 512MB device with about a 800x480 or less screen. 704 * This is mostly intended to be used by apps to determine whether they should turn 705 * off certain features that require more RAM. 706 */ 707 public boolean isLowRamDevice() { 708 return isLowRamDeviceStatic(); 709 } 710 711 /** @hide */ 712 public static boolean isLowRamDeviceStatic() { 713 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 714 } 715 716 /** 717 * Used by persistent processes to determine if they are running on a 718 * higher-end device so should be okay using hardware drawing acceleration 719 * (which tends to consume a lot more RAM). 720 * @hide 721 */ 722 static public boolean isHighEndGfx() { 723 return !isLowRamDeviceStatic() && 724 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 725 } 726 727 /** 728 * Return the maximum number of recents entries that we will maintain and show. 729 * @hide 730 */ 731 static public int getMaxRecentTasksStatic() { 732 if (gMaxRecentTasks < 0) { 733 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 734 } 735 return gMaxRecentTasks; 736 } 737 738 /** 739 * Return the default limit on the number of recents that an app can make. 740 * @hide 741 */ 742 static public int getDefaultAppRecentsLimitStatic() { 743 return getMaxRecentTasksStatic() / 6; 744 } 745 746 /** 747 * Return the maximum limit on the number of recents that an app can make. 748 * @hide 749 */ 750 static public int getMaxAppRecentsLimitStatic() { 751 return getMaxRecentTasksStatic() / 2; 752 } 753 754 /** 755 * Information you can set and retrieve about the current activity within the recent task list. 756 */ 757 public static class TaskDescription implements Parcelable { 758 /** @hide */ 759 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 760 private static final String ATTR_TASKDESCRIPTIONLABEL = 761 ATTR_TASKDESCRIPTION_PREFIX + "label"; 762 private static final String ATTR_TASKDESCRIPTIONCOLOR = 763 ATTR_TASKDESCRIPTION_PREFIX + "color"; 764 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 765 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 766 767 private String mLabel; 768 private Bitmap mIcon; 769 private String mIconFilename; 770 private int mColorPrimary; 771 772 /** 773 * Creates the TaskDescription to the specified values. 774 * 775 * @param label A label and description of the current state of this task. 776 * @param icon An icon that represents the current state of this task. 777 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 778 */ 779 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 780 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 781 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 782 } 783 784 mLabel = label; 785 mIcon = icon; 786 mColorPrimary = colorPrimary; 787 } 788 789 /** @hide */ 790 public TaskDescription(String label, int colorPrimary, String iconFilename) { 791 this(label, null, colorPrimary); 792 mIconFilename = iconFilename; 793 } 794 795 /** 796 * Creates the TaskDescription to the specified values. 797 * 798 * @param label A label and description of the current state of this activity. 799 * @param icon An icon that represents the current state of this activity. 800 */ 801 public TaskDescription(String label, Bitmap icon) { 802 this(label, icon, 0); 803 } 804 805 /** 806 * Creates the TaskDescription to the specified values. 807 * 808 * @param label A label and description of the current state of this activity. 809 */ 810 public TaskDescription(String label) { 811 this(label, null, 0); 812 } 813 814 /** 815 * Creates an empty TaskDescription. 816 */ 817 public TaskDescription() { 818 this(null, null, 0); 819 } 820 821 /** 822 * Creates a copy of another TaskDescription. 823 */ 824 public TaskDescription(TaskDescription td) { 825 mLabel = td.mLabel; 826 mIcon = td.mIcon; 827 mColorPrimary = td.mColorPrimary; 828 mIconFilename = td.mIconFilename; 829 } 830 831 private TaskDescription(Parcel source) { 832 readFromParcel(source); 833 } 834 835 /** 836 * Sets the label for this task description. 837 * @hide 838 */ 839 public void setLabel(String label) { 840 mLabel = label; 841 } 842 843 /** 844 * Sets the primary color for this task description. 845 * @hide 846 */ 847 public void setPrimaryColor(int primaryColor) { 848 // Ensure that the given color is valid 849 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 850 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 851 } 852 mColorPrimary = primaryColor; 853 } 854 855 /** 856 * Sets the icon for this task description. 857 * @hide 858 */ 859 public void setIcon(Bitmap icon) { 860 mIcon = icon; 861 } 862 863 /** 864 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 865 * bitmap. 866 * @hide 867 */ 868 public void setIconFilename(String iconFilename) { 869 mIconFilename = iconFilename; 870 mIcon = null; 871 } 872 873 /** 874 * @return The label and description of the current state of this task. 875 */ 876 public String getLabel() { 877 return mLabel; 878 } 879 880 /** 881 * @return The icon that represents the current state of this task. 882 */ 883 public Bitmap getIcon() { 884 if (mIcon != null) { 885 return mIcon; 886 } 887 return loadTaskDescriptionIcon(mIconFilename); 888 } 889 890 /** @hide */ 891 public String getIconFilename() { 892 return mIconFilename; 893 } 894 895 /** @hide */ 896 public Bitmap getInMemoryIcon() { 897 return mIcon; 898 } 899 900 /** @hide */ 901 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 902 if (iconFilename != null) { 903 try { 904 return ActivityManagerNative.getDefault(). 905 getTaskDescriptionIcon(iconFilename); 906 } catch (RemoteException e) { 907 } 908 } 909 return null; 910 } 911 912 /** 913 * @return The color override on the theme's primary color. 914 */ 915 public int getPrimaryColor() { 916 return mColorPrimary; 917 } 918 919 /** @hide */ 920 public void saveToXml(XmlSerializer out) throws IOException { 921 if (mLabel != null) { 922 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 923 } 924 if (mColorPrimary != 0) { 925 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 926 } 927 if (mIconFilename != null) { 928 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 929 } 930 } 931 932 /** @hide */ 933 public void restoreFromXml(String attrName, String attrValue) { 934 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 935 setLabel(attrValue); 936 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 937 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 938 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 939 setIconFilename(attrValue); 940 } 941 } 942 943 @Override 944 public int describeContents() { 945 return 0; 946 } 947 948 @Override 949 public void writeToParcel(Parcel dest, int flags) { 950 if (mLabel == null) { 951 dest.writeInt(0); 952 } else { 953 dest.writeInt(1); 954 dest.writeString(mLabel); 955 } 956 if (mIcon == null) { 957 dest.writeInt(0); 958 } else { 959 dest.writeInt(1); 960 mIcon.writeToParcel(dest, 0); 961 } 962 dest.writeInt(mColorPrimary); 963 if (mIconFilename == null) { 964 dest.writeInt(0); 965 } else { 966 dest.writeInt(1); 967 dest.writeString(mIconFilename); 968 } 969 } 970 971 public void readFromParcel(Parcel source) { 972 mLabel = source.readInt() > 0 ? source.readString() : null; 973 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 974 mColorPrimary = source.readInt(); 975 mIconFilename = source.readInt() > 0 ? source.readString() : null; 976 } 977 978 public static final Creator<TaskDescription> CREATOR 979 = new Creator<TaskDescription>() { 980 public TaskDescription createFromParcel(Parcel source) { 981 return new TaskDescription(source); 982 } 983 public TaskDescription[] newArray(int size) { 984 return new TaskDescription[size]; 985 } 986 }; 987 988 @Override 989 public String toString() { 990 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 991 " colorPrimary: " + mColorPrimary; 992 } 993 } 994 995 /** 996 * Information you can retrieve about tasks that the user has most recently 997 * started or visited. 998 */ 999 public static class RecentTaskInfo implements Parcelable { 1000 /** 1001 * If this task is currently running, this is the identifier for it. 1002 * If it is not running, this will be -1. 1003 */ 1004 public int id; 1005 1006 /** 1007 * The true identifier of this task, valid even if it is not running. 1008 */ 1009 public int persistentId; 1010 1011 /** 1012 * The original Intent used to launch the task. You can use this 1013 * Intent to re-launch the task (if it is no longer running) or bring 1014 * the current task to the front. 1015 */ 1016 public Intent baseIntent; 1017 1018 /** 1019 * If this task was started from an alias, this is the actual 1020 * activity component that was initially started; the component of 1021 * the baseIntent in this case is the name of the actual activity 1022 * implementation that the alias referred to. Otherwise, this is null. 1023 */ 1024 public ComponentName origActivity; 1025 1026 /** 1027 * The actual activity component that started the task. 1028 * @hide 1029 */ 1030 @Nullable 1031 public ComponentName realActivity; 1032 1033 /** 1034 * Description of the task's last state. 1035 */ 1036 public CharSequence description; 1037 1038 /** 1039 * The id of the ActivityStack this Task was on most recently. 1040 * @hide 1041 */ 1042 public int stackId; 1043 1044 /** 1045 * The id of the user the task was running as. 1046 * @hide 1047 */ 1048 public int userId; 1049 1050 /** 1051 * The first time this task was active. 1052 * @hide 1053 */ 1054 public long firstActiveTime; 1055 1056 /** 1057 * The last time this task was active. 1058 * @hide 1059 */ 1060 public long lastActiveTime; 1061 1062 /** 1063 * The recent activity values for the highest activity in the stack to have set the values. 1064 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1065 */ 1066 public TaskDescription taskDescription; 1067 1068 /** 1069 * Task affiliation for grouping with other tasks. 1070 */ 1071 public int affiliatedTaskId; 1072 1073 /** 1074 * Task affiliation color of the source task with the affiliated task id. 1075 * 1076 * @hide 1077 */ 1078 public int affiliatedTaskColor; 1079 1080 /** 1081 * The component launched as the first activity in the task. 1082 * This can be considered the "application" of this task. 1083 */ 1084 public ComponentName baseActivity; 1085 1086 /** 1087 * The activity component at the top of the history stack of the task. 1088 * This is what the user is currently doing. 1089 */ 1090 public ComponentName topActivity; 1091 1092 /** 1093 * Number of activities in this task. 1094 */ 1095 public int numActivities; 1096 1097 /** 1098 * The bounds of the task. 1099 * @hide 1100 */ 1101 public Rect bounds; 1102 1103 public RecentTaskInfo() { 1104 } 1105 1106 @Override 1107 public int describeContents() { 1108 return 0; 1109 } 1110 1111 @Override 1112 public void writeToParcel(Parcel dest, int flags) { 1113 dest.writeInt(id); 1114 dest.writeInt(persistentId); 1115 if (baseIntent != null) { 1116 dest.writeInt(1); 1117 baseIntent.writeToParcel(dest, 0); 1118 } else { 1119 dest.writeInt(0); 1120 } 1121 ComponentName.writeToParcel(origActivity, dest); 1122 ComponentName.writeToParcel(realActivity, dest); 1123 TextUtils.writeToParcel(description, dest, 1124 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1125 if (taskDescription != null) { 1126 dest.writeInt(1); 1127 taskDescription.writeToParcel(dest, 0); 1128 } else { 1129 dest.writeInt(0); 1130 } 1131 dest.writeInt(stackId); 1132 dest.writeInt(userId); 1133 dest.writeLong(firstActiveTime); 1134 dest.writeLong(lastActiveTime); 1135 dest.writeInt(affiliatedTaskId); 1136 dest.writeInt(affiliatedTaskColor); 1137 ComponentName.writeToParcel(baseActivity, dest); 1138 ComponentName.writeToParcel(topActivity, dest); 1139 dest.writeInt(numActivities); 1140 if (bounds != null) { 1141 dest.writeInt(1); 1142 bounds.writeToParcel(dest, 0); 1143 } else { 1144 dest.writeInt(0); 1145 } 1146 } 1147 1148 public void readFromParcel(Parcel source) { 1149 id = source.readInt(); 1150 persistentId = source.readInt(); 1151 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1152 origActivity = ComponentName.readFromParcel(source); 1153 realActivity = ComponentName.readFromParcel(source); 1154 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1155 taskDescription = source.readInt() > 0 ? 1156 TaskDescription.CREATOR.createFromParcel(source) : null; 1157 stackId = source.readInt(); 1158 userId = source.readInt(); 1159 firstActiveTime = source.readLong(); 1160 lastActiveTime = source.readLong(); 1161 affiliatedTaskId = source.readInt(); 1162 affiliatedTaskColor = source.readInt(); 1163 baseActivity = ComponentName.readFromParcel(source); 1164 topActivity = ComponentName.readFromParcel(source); 1165 numActivities = source.readInt(); 1166 bounds = source.readInt() > 0 ? 1167 Rect.CREATOR.createFromParcel(source) : null; 1168 } 1169 1170 public static final Creator<RecentTaskInfo> CREATOR 1171 = new Creator<RecentTaskInfo>() { 1172 public RecentTaskInfo createFromParcel(Parcel source) { 1173 return new RecentTaskInfo(source); 1174 } 1175 public RecentTaskInfo[] newArray(int size) { 1176 return new RecentTaskInfo[size]; 1177 } 1178 }; 1179 1180 private RecentTaskInfo(Parcel source) { 1181 readFromParcel(source); 1182 } 1183 } 1184 1185 /** 1186 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1187 * that have set their 1188 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1189 */ 1190 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1191 1192 /** 1193 * Provides a list that does not contain any 1194 * recent tasks that currently are not available to the user. 1195 */ 1196 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1197 1198 /** 1199 * Provides a list that contains recent tasks for all 1200 * profiles of a user. 1201 * @hide 1202 */ 1203 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1204 1205 /** 1206 * Ignores all tasks that are on the home stack. 1207 * @hide 1208 */ 1209 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1210 1211 /** 1212 * <p></p>Return a list of the tasks that the user has recently launched, with 1213 * the most recent being first and older ones after in order. 1214 * 1215 * <p><b>Note: this method is only intended for debugging and presenting 1216 * task management user interfaces</b>. This should never be used for 1217 * core logic in an application, such as deciding between different 1218 * behaviors based on the information found here. Such uses are 1219 * <em>not</em> supported, and will likely break in the future. For 1220 * example, if multiple applications can be actively running at the 1221 * same time, assumptions made about the meaning of the data here for 1222 * purposes of control flow will be incorrect.</p> 1223 * 1224 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1225 * no longer available to third party applications: the introduction of 1226 * document-centric recents means 1227 * it can leak personal information to the caller. For backwards compatibility, 1228 * it will still return a small subset of its data: at least the caller's 1229 * own tasks (though see {@link #getAppTasks()} for the correct supported 1230 * way to retrieve that information), and possibly some other tasks 1231 * such as home that are known to not be sensitive. 1232 * 1233 * @param maxNum The maximum number of entries to return in the list. The 1234 * actual number returned may be smaller, depending on how many tasks the 1235 * user has started and the maximum number the system can remember. 1236 * @param flags Information about what to return. May be any combination 1237 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1238 * 1239 * @return Returns a list of RecentTaskInfo records describing each of 1240 * the recent tasks. 1241 */ 1242 @Deprecated 1243 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1244 throws SecurityException { 1245 try { 1246 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1247 flags, UserHandle.myUserId()); 1248 } catch (RemoteException e) { 1249 // System dead, we will be dead too soon! 1250 return null; 1251 } 1252 } 1253 1254 /** 1255 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1256 * specific user. It requires holding 1257 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1258 * @param maxNum The maximum number of entries to return in the list. The 1259 * actual number returned may be smaller, depending on how many tasks the 1260 * user has started and the maximum number the system can remember. 1261 * @param flags Information about what to return. May be any combination 1262 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1263 * 1264 * @return Returns a list of RecentTaskInfo records describing each of 1265 * the recent tasks. Most recently activated tasks go first. 1266 * 1267 * @hide 1268 */ 1269 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1270 throws SecurityException { 1271 try { 1272 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1273 flags, userId); 1274 } catch (RemoteException e) { 1275 // System dead, we will be dead too soon! 1276 return null; 1277 } 1278 } 1279 1280 /** 1281 * Information you can retrieve about a particular task that is currently 1282 * "running" in the system. Note that a running task does not mean the 1283 * given task actually has a process it is actively running in; it simply 1284 * means that the user has gone to it and never closed it, but currently 1285 * the system may have killed its process and is only holding on to its 1286 * last state in order to restart it when the user returns. 1287 */ 1288 public static class RunningTaskInfo implements Parcelable { 1289 /** 1290 * A unique identifier for this task. 1291 */ 1292 public int id; 1293 1294 /** 1295 * The stack that currently contains this task. 1296 * @hide 1297 */ 1298 public int stackId; 1299 1300 /** 1301 * The component launched as the first activity in the task. This can 1302 * be considered the "application" of this task. 1303 */ 1304 public ComponentName baseActivity; 1305 1306 /** 1307 * The activity component at the top of the history stack of the task. 1308 * This is what the user is currently doing. 1309 */ 1310 public ComponentName topActivity; 1311 1312 /** 1313 * Thumbnail representation of the task's current state. Currently 1314 * always null. 1315 */ 1316 public Bitmap thumbnail; 1317 1318 /** 1319 * Description of the task's current state. 1320 */ 1321 public CharSequence description; 1322 1323 /** 1324 * Number of activities in this task. 1325 */ 1326 public int numActivities; 1327 1328 /** 1329 * Number of activities that are currently running (not stopped 1330 * and persisted) in this task. 1331 */ 1332 public int numRunning; 1333 1334 /** 1335 * Last time task was run. For sorting. 1336 * @hide 1337 */ 1338 public long lastActiveTime; 1339 1340 public RunningTaskInfo() { 1341 } 1342 1343 public int describeContents() { 1344 return 0; 1345 } 1346 1347 public void writeToParcel(Parcel dest, int flags) { 1348 dest.writeInt(id); 1349 dest.writeInt(stackId); 1350 ComponentName.writeToParcel(baseActivity, dest); 1351 ComponentName.writeToParcel(topActivity, dest); 1352 if (thumbnail != null) { 1353 dest.writeInt(1); 1354 thumbnail.writeToParcel(dest, 0); 1355 } else { 1356 dest.writeInt(0); 1357 } 1358 TextUtils.writeToParcel(description, dest, 1359 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1360 dest.writeInt(numActivities); 1361 dest.writeInt(numRunning); 1362 } 1363 1364 public void readFromParcel(Parcel source) { 1365 id = source.readInt(); 1366 stackId = source.readInt(); 1367 baseActivity = ComponentName.readFromParcel(source); 1368 topActivity = ComponentName.readFromParcel(source); 1369 if (source.readInt() != 0) { 1370 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1371 } else { 1372 thumbnail = null; 1373 } 1374 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1375 numActivities = source.readInt(); 1376 numRunning = source.readInt(); 1377 } 1378 1379 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1380 public RunningTaskInfo createFromParcel(Parcel source) { 1381 return new RunningTaskInfo(source); 1382 } 1383 public RunningTaskInfo[] newArray(int size) { 1384 return new RunningTaskInfo[size]; 1385 } 1386 }; 1387 1388 private RunningTaskInfo(Parcel source) { 1389 readFromParcel(source); 1390 } 1391 } 1392 1393 /** 1394 * Get the list of tasks associated with the calling application. 1395 * 1396 * @return The list of tasks associated with the application making this call. 1397 * @throws SecurityException 1398 */ 1399 public List<ActivityManager.AppTask> getAppTasks() { 1400 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1401 List<IAppTask> appTasks; 1402 try { 1403 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1404 } catch (RemoteException e) { 1405 // System dead, we will be dead too soon! 1406 return null; 1407 } 1408 int numAppTasks = appTasks.size(); 1409 for (int i = 0; i < numAppTasks; i++) { 1410 tasks.add(new AppTask(appTasks.get(i))); 1411 } 1412 return tasks; 1413 } 1414 1415 /** 1416 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1417 * with {@link #addAppTask}. 1418 */ 1419 public Size getAppTaskThumbnailSize() { 1420 synchronized (this) { 1421 ensureAppTaskThumbnailSizeLocked(); 1422 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1423 } 1424 } 1425 1426 private void ensureAppTaskThumbnailSizeLocked() { 1427 if (mAppTaskThumbnailSize == null) { 1428 try { 1429 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1430 } catch (RemoteException e) { 1431 throw new IllegalStateException("System dead?", e); 1432 } 1433 } 1434 } 1435 1436 /** 1437 * Add a new {@link AppTask} for the calling application. This will create a new 1438 * recents entry that is added to the <b>end</b> of all existing recents. 1439 * 1440 * @param activity The activity that is adding the entry. This is used to help determine 1441 * the context that the new recents entry will be in. 1442 * @param intent The Intent that describes the recents entry. This is the same Intent that 1443 * you would have used to launch the activity for it. In generally you will want to set 1444 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1445 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1446 * entry will exist without an activity, so it doesn't make sense to not retain it when 1447 * its activity disappears. The given Intent here also must have an explicit ComponentName 1448 * set on it. 1449 * @param description Optional additional description information. 1450 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1451 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1452 * recreated in your process, probably in a way you don't like, before the recents entry 1453 * is added. 1454 * 1455 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1456 * most likely cause of failure is that there is no more room for more tasks for your app. 1457 */ 1458 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1459 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1460 Point size; 1461 synchronized (this) { 1462 ensureAppTaskThumbnailSizeLocked(); 1463 size = mAppTaskThumbnailSize; 1464 } 1465 final int tw = thumbnail.getWidth(); 1466 final int th = thumbnail.getHeight(); 1467 if (tw != size.x || th != size.y) { 1468 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1469 1470 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1471 float scale; 1472 float dx = 0, dy = 0; 1473 if (tw * size.x > size.y * th) { 1474 scale = (float) size.x / (float) th; 1475 dx = (size.y - tw * scale) * 0.5f; 1476 } else { 1477 scale = (float) size.y / (float) tw; 1478 dy = (size.x - th * scale) * 0.5f; 1479 } 1480 Matrix matrix = new Matrix(); 1481 matrix.setScale(scale, scale); 1482 matrix.postTranslate((int) (dx + 0.5f), 0); 1483 1484 Canvas canvas = new Canvas(bm); 1485 canvas.drawBitmap(thumbnail, matrix, null); 1486 canvas.setBitmap(null); 1487 1488 thumbnail = bm; 1489 } 1490 if (description == null) { 1491 description = new TaskDescription(); 1492 } 1493 try { 1494 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1495 intent, description, thumbnail); 1496 } catch (RemoteException e) { 1497 throw new IllegalStateException("System dead?", e); 1498 } 1499 } 1500 1501 /** 1502 * Return a list of the tasks that are currently running, with 1503 * the most recent being first and older ones after in order. Note that 1504 * "running" does not mean any of the task's code is currently loaded or 1505 * activity -- the task may have been frozen by the system, so that it 1506 * can be restarted in its previous state when next brought to the 1507 * foreground. 1508 * 1509 * <p><b>Note: this method is only intended for debugging and presenting 1510 * task management user interfaces</b>. This should never be used for 1511 * core logic in an application, such as deciding between different 1512 * behaviors based on the information found here. Such uses are 1513 * <em>not</em> supported, and will likely break in the future. For 1514 * example, if multiple applications can be actively running at the 1515 * same time, assumptions made about the meaning of the data here for 1516 * purposes of control flow will be incorrect.</p> 1517 * 1518 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1519 * is no longer available to third party 1520 * applications: the introduction of document-centric recents means 1521 * it can leak person information to the caller. For backwards compatibility, 1522 * it will still retu rn a small subset of its data: at least the caller's 1523 * own tasks, and possibly some other tasks 1524 * such as home that are known to not be sensitive. 1525 * 1526 * @param maxNum The maximum number of entries to return in the list. The 1527 * actual number returned may be smaller, depending on how many tasks the 1528 * user has started. 1529 * 1530 * @return Returns a list of RunningTaskInfo records describing each of 1531 * the running tasks. 1532 */ 1533 @Deprecated 1534 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1535 throws SecurityException { 1536 try { 1537 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1538 } catch (RemoteException e) { 1539 // System dead, we will be dead too soon! 1540 return null; 1541 } 1542 } 1543 1544 /** 1545 * Completely remove the given task. 1546 * 1547 * @param taskId Identifier of the task to be removed. 1548 * @return Returns true if the given task was found and removed. 1549 * 1550 * @hide 1551 */ 1552 public boolean removeTask(int taskId) throws SecurityException { 1553 try { 1554 return ActivityManagerNative.getDefault().removeTask(taskId); 1555 } catch (RemoteException e) { 1556 // System dead, we will be dead too soon! 1557 return false; 1558 } 1559 } 1560 1561 /** 1562 * Metadata related to the {@link TaskThumbnail}. 1563 * 1564 * @hide 1565 */ 1566 public static class TaskThumbnailInfo implements Parcelable { 1567 /** @hide */ 1568 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1569 private static final String ATTR_TASK_WIDTH = 1570 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1571 private static final String ATTR_TASK_HEIGHT = 1572 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1573 private static final String ATTR_SCREEN_ORIENTATION = 1574 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1575 1576 public int taskWidth; 1577 public int taskHeight; 1578 public int screenOrientation; 1579 1580 public TaskThumbnailInfo() { 1581 // Do nothing 1582 } 1583 1584 private TaskThumbnailInfo(Parcel source) { 1585 readFromParcel(source); 1586 } 1587 1588 /** 1589 * Resets this info state to the initial state. 1590 * @hide 1591 */ 1592 public void reset() { 1593 taskWidth = 0; 1594 taskHeight = 0; 1595 screenOrientation = 0; 1596 } 1597 1598 /** @hide */ 1599 public void saveToXml(XmlSerializer out) throws IOException { 1600 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1601 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1602 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1603 } 1604 1605 /** @hide */ 1606 public void restoreFromXml(String attrName, String attrValue) { 1607 if (ATTR_TASK_WIDTH.equals(attrName)) { 1608 taskWidth = Integer.parseInt(attrValue); 1609 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1610 taskHeight = Integer.parseInt(attrValue); 1611 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1612 screenOrientation = Integer.parseInt(attrValue); 1613 } 1614 } 1615 1616 public int describeContents() { 1617 return 0; 1618 } 1619 1620 public void writeToParcel(Parcel dest, int flags) { 1621 dest.writeInt(taskWidth); 1622 dest.writeInt(taskHeight); 1623 dest.writeInt(screenOrientation); 1624 } 1625 1626 public void readFromParcel(Parcel source) { 1627 taskWidth = source.readInt(); 1628 taskHeight = source.readInt(); 1629 screenOrientation = source.readInt(); 1630 } 1631 1632 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1633 public TaskThumbnailInfo createFromParcel(Parcel source) { 1634 return new TaskThumbnailInfo(source); 1635 } 1636 public TaskThumbnailInfo[] newArray(int size) { 1637 return new TaskThumbnailInfo[size]; 1638 } 1639 }; 1640 } 1641 1642 /** @hide */ 1643 public static class TaskThumbnail implements Parcelable { 1644 public Bitmap mainThumbnail; 1645 public ParcelFileDescriptor thumbnailFileDescriptor; 1646 public TaskThumbnailInfo thumbnailInfo; 1647 1648 public TaskThumbnail() { 1649 } 1650 1651 private TaskThumbnail(Parcel source) { 1652 readFromParcel(source); 1653 } 1654 1655 public int describeContents() { 1656 if (thumbnailFileDescriptor != null) { 1657 return thumbnailFileDescriptor.describeContents(); 1658 } 1659 return 0; 1660 } 1661 1662 public void writeToParcel(Parcel dest, int flags) { 1663 if (mainThumbnail != null) { 1664 dest.writeInt(1); 1665 mainThumbnail.writeToParcel(dest, flags); 1666 } else { 1667 dest.writeInt(0); 1668 } 1669 if (thumbnailFileDescriptor != null) { 1670 dest.writeInt(1); 1671 thumbnailFileDescriptor.writeToParcel(dest, flags); 1672 } else { 1673 dest.writeInt(0); 1674 } 1675 if (thumbnailInfo != null) { 1676 dest.writeInt(1); 1677 thumbnailInfo.writeToParcel(dest, flags); 1678 } else { 1679 dest.writeInt(0); 1680 } 1681 } 1682 1683 public void readFromParcel(Parcel source) { 1684 if (source.readInt() != 0) { 1685 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1686 } else { 1687 mainThumbnail = null; 1688 } 1689 if (source.readInt() != 0) { 1690 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1691 } else { 1692 thumbnailFileDescriptor = null; 1693 } 1694 if (source.readInt() != 0) { 1695 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1696 } else { 1697 thumbnailInfo = null; 1698 } 1699 } 1700 1701 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1702 public TaskThumbnail createFromParcel(Parcel source) { 1703 return new TaskThumbnail(source); 1704 } 1705 public TaskThumbnail[] newArray(int size) { 1706 return new TaskThumbnail[size]; 1707 } 1708 }; 1709 } 1710 1711 /** @hide */ 1712 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1713 try { 1714 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1715 } catch (RemoteException e) { 1716 // System dead, we will be dead too soon! 1717 return null; 1718 } 1719 } 1720 1721 /** @hide */ 1722 public boolean isInHomeStack(int taskId) { 1723 try { 1724 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1725 } catch (RemoteException e) { 1726 // System dead, we will be dead too soon! 1727 return false; 1728 } 1729 } 1730 1731 /** 1732 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1733 * activity along with the task, so it is positioned immediately behind 1734 * the task. 1735 */ 1736 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1737 1738 /** 1739 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1740 * user-instigated action, so the current activity will not receive a 1741 * hint that the user is leaving. 1742 */ 1743 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1744 1745 /** 1746 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1747 * with a null options argument. 1748 * 1749 * @param taskId The identifier of the task to be moved, as found in 1750 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1751 * @param flags Additional operational flags, 0 or more of 1752 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1753 */ 1754 public void moveTaskToFront(int taskId, int flags) { 1755 moveTaskToFront(taskId, flags, null); 1756 } 1757 1758 /** 1759 * Ask that the task associated with a given task ID be moved to the 1760 * front of the stack, so it is now visible to the user. Requires that 1761 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1762 * or a SecurityException will be thrown. 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 * @param options Additional options for the operation, either null or 1769 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1770 * Context.startActivity(Intent, Bundle)}. 1771 */ 1772 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1773 try { 1774 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1775 } catch (RemoteException e) { 1776 // System dead, we will be dead too soon! 1777 } 1778 } 1779 1780 /** 1781 * Information you can retrieve about a particular Service that is 1782 * currently running in the system. 1783 */ 1784 public static class RunningServiceInfo implements Parcelable { 1785 /** 1786 * The service component. 1787 */ 1788 public ComponentName service; 1789 1790 /** 1791 * If non-zero, this is the process the service is running in. 1792 */ 1793 public int pid; 1794 1795 /** 1796 * The UID that owns this service. 1797 */ 1798 public int uid; 1799 1800 /** 1801 * The name of the process this service runs in. 1802 */ 1803 public String process; 1804 1805 /** 1806 * Set to true if the service has asked to run as a foreground process. 1807 */ 1808 public boolean foreground; 1809 1810 /** 1811 * The time when the service was first made active, either by someone 1812 * starting or binding to it. This 1813 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1814 */ 1815 public long activeSince; 1816 1817 /** 1818 * Set to true if this service has been explicitly started. 1819 */ 1820 public boolean started; 1821 1822 /** 1823 * Number of clients connected to the service. 1824 */ 1825 public int clientCount; 1826 1827 /** 1828 * Number of times the service's process has crashed while the service 1829 * is running. 1830 */ 1831 public int crashCount; 1832 1833 /** 1834 * The time when there was last activity in the service (either 1835 * explicit requests to start it or clients binding to it). This 1836 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1837 */ 1838 public long lastActivityTime; 1839 1840 /** 1841 * If non-zero, this service is not currently running, but scheduled to 1842 * restart at the given time. 1843 */ 1844 public long restarting; 1845 1846 /** 1847 * Bit for {@link #flags}: set if this service has been 1848 * explicitly started. 1849 */ 1850 public static final int FLAG_STARTED = 1<<0; 1851 1852 /** 1853 * Bit for {@link #flags}: set if the service has asked to 1854 * run as a foreground process. 1855 */ 1856 public static final int FLAG_FOREGROUND = 1<<1; 1857 1858 /** 1859 * Bit for {@link #flags): set if the service is running in a 1860 * core system process. 1861 */ 1862 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1863 1864 /** 1865 * Bit for {@link #flags): set if the service is running in a 1866 * persistent process. 1867 */ 1868 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1869 1870 /** 1871 * Running flags. 1872 */ 1873 public int flags; 1874 1875 /** 1876 * For special services that are bound to by system code, this is 1877 * the package that holds the binding. 1878 */ 1879 public String clientPackage; 1880 1881 /** 1882 * For special services that are bound to by system code, this is 1883 * a string resource providing a user-visible label for who the 1884 * client is. 1885 */ 1886 public int clientLabel; 1887 1888 public RunningServiceInfo() { 1889 } 1890 1891 public int describeContents() { 1892 return 0; 1893 } 1894 1895 public void writeToParcel(Parcel dest, int flags) { 1896 ComponentName.writeToParcel(service, dest); 1897 dest.writeInt(pid); 1898 dest.writeInt(uid); 1899 dest.writeString(process); 1900 dest.writeInt(foreground ? 1 : 0); 1901 dest.writeLong(activeSince); 1902 dest.writeInt(started ? 1 : 0); 1903 dest.writeInt(clientCount); 1904 dest.writeInt(crashCount); 1905 dest.writeLong(lastActivityTime); 1906 dest.writeLong(restarting); 1907 dest.writeInt(this.flags); 1908 dest.writeString(clientPackage); 1909 dest.writeInt(clientLabel); 1910 } 1911 1912 public void readFromParcel(Parcel source) { 1913 service = ComponentName.readFromParcel(source); 1914 pid = source.readInt(); 1915 uid = source.readInt(); 1916 process = source.readString(); 1917 foreground = source.readInt() != 0; 1918 activeSince = source.readLong(); 1919 started = source.readInt() != 0; 1920 clientCount = source.readInt(); 1921 crashCount = source.readInt(); 1922 lastActivityTime = source.readLong(); 1923 restarting = source.readLong(); 1924 flags = source.readInt(); 1925 clientPackage = source.readString(); 1926 clientLabel = source.readInt(); 1927 } 1928 1929 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1930 public RunningServiceInfo createFromParcel(Parcel source) { 1931 return new RunningServiceInfo(source); 1932 } 1933 public RunningServiceInfo[] newArray(int size) { 1934 return new RunningServiceInfo[size]; 1935 } 1936 }; 1937 1938 private RunningServiceInfo(Parcel source) { 1939 readFromParcel(source); 1940 } 1941 } 1942 1943 /** 1944 * Return a list of the services that are currently running. 1945 * 1946 * <p><b>Note: this method is only intended for debugging or implementing 1947 * service management type user interfaces.</b></p> 1948 * 1949 * @param maxNum The maximum number of entries to return in the list. The 1950 * actual number returned may be smaller, depending on how many services 1951 * are running. 1952 * 1953 * @return Returns a list of RunningServiceInfo records describing each of 1954 * the running tasks. 1955 */ 1956 public List<RunningServiceInfo> getRunningServices(int maxNum) 1957 throws SecurityException { 1958 try { 1959 return ActivityManagerNative.getDefault() 1960 .getServices(maxNum, 0); 1961 } catch (RemoteException e) { 1962 // System dead, we will be dead too soon! 1963 return null; 1964 } 1965 } 1966 1967 /** 1968 * Returns a PendingIntent you can start to show a control panel for the 1969 * given running service. If the service does not have a control panel, 1970 * null is returned. 1971 */ 1972 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1973 throws SecurityException { 1974 try { 1975 return ActivityManagerNative.getDefault() 1976 .getRunningServiceControlPanel(service); 1977 } catch (RemoteException e) { 1978 // System dead, we will be dead too soon! 1979 return null; 1980 } 1981 } 1982 1983 /** 1984 * Information you can retrieve about the available memory through 1985 * {@link ActivityManager#getMemoryInfo}. 1986 */ 1987 public static class MemoryInfo implements Parcelable { 1988 /** 1989 * The available memory on the system. This number should not 1990 * be considered absolute: due to the nature of the kernel, a significant 1991 * portion of this memory is actually in use and needed for the overall 1992 * system to run well. 1993 */ 1994 public long availMem; 1995 1996 /** 1997 * The total memory accessible by the kernel. This is basically the 1998 * RAM size of the device, not including below-kernel fixed allocations 1999 * like DMA buffers, RAM for the baseband CPU, etc. 2000 */ 2001 public long totalMem; 2002 2003 /** 2004 * The threshold of {@link #availMem} at which we consider memory to be 2005 * low and start killing background services and other non-extraneous 2006 * processes. 2007 */ 2008 public long threshold; 2009 2010 /** 2011 * Set to true if the system considers itself to currently be in a low 2012 * memory situation. 2013 */ 2014 public boolean lowMemory; 2015 2016 /** @hide */ 2017 public long hiddenAppThreshold; 2018 /** @hide */ 2019 public long secondaryServerThreshold; 2020 /** @hide */ 2021 public long visibleAppThreshold; 2022 /** @hide */ 2023 public long foregroundAppThreshold; 2024 2025 public MemoryInfo() { 2026 } 2027 2028 public int describeContents() { 2029 return 0; 2030 } 2031 2032 public void writeToParcel(Parcel dest, int flags) { 2033 dest.writeLong(availMem); 2034 dest.writeLong(totalMem); 2035 dest.writeLong(threshold); 2036 dest.writeInt(lowMemory ? 1 : 0); 2037 dest.writeLong(hiddenAppThreshold); 2038 dest.writeLong(secondaryServerThreshold); 2039 dest.writeLong(visibleAppThreshold); 2040 dest.writeLong(foregroundAppThreshold); 2041 } 2042 2043 public void readFromParcel(Parcel source) { 2044 availMem = source.readLong(); 2045 totalMem = source.readLong(); 2046 threshold = source.readLong(); 2047 lowMemory = source.readInt() != 0; 2048 hiddenAppThreshold = source.readLong(); 2049 secondaryServerThreshold = source.readLong(); 2050 visibleAppThreshold = source.readLong(); 2051 foregroundAppThreshold = source.readLong(); 2052 } 2053 2054 public static final Creator<MemoryInfo> CREATOR 2055 = new Creator<MemoryInfo>() { 2056 public MemoryInfo createFromParcel(Parcel source) { 2057 return new MemoryInfo(source); 2058 } 2059 public MemoryInfo[] newArray(int size) { 2060 return new MemoryInfo[size]; 2061 } 2062 }; 2063 2064 private MemoryInfo(Parcel source) { 2065 readFromParcel(source); 2066 } 2067 } 2068 2069 /** 2070 * Return general information about the memory state of the system. This 2071 * can be used to help decide how to manage your own memory, though note 2072 * that polling is not recommended and 2073 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2074 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2075 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2076 * level of your process as needed, which gives a better hint for how to 2077 * manage its memory. 2078 */ 2079 public void getMemoryInfo(MemoryInfo outInfo) { 2080 try { 2081 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2082 } catch (RemoteException e) { 2083 } 2084 } 2085 2086 /** 2087 * Information you can retrieve about an ActivityStack in the system. 2088 * @hide 2089 */ 2090 public static class StackInfo implements Parcelable { 2091 public int stackId; 2092 public Rect bounds = new Rect(); 2093 public int[] taskIds; 2094 public String[] taskNames; 2095 public Rect[] taskBounds; 2096 public int displayId; 2097 2098 @Override 2099 public int describeContents() { 2100 return 0; 2101 } 2102 2103 @Override 2104 public void writeToParcel(Parcel dest, int flags) { 2105 dest.writeInt(stackId); 2106 dest.writeInt(bounds.left); 2107 dest.writeInt(bounds.top); 2108 dest.writeInt(bounds.right); 2109 dest.writeInt(bounds.bottom); 2110 dest.writeIntArray(taskIds); 2111 dest.writeStringArray(taskNames); 2112 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2113 dest.writeInt(boundsCount); 2114 for (int i = 0; i < boundsCount; i++) { 2115 dest.writeInt(taskBounds[i].left); 2116 dest.writeInt(taskBounds[i].top); 2117 dest.writeInt(taskBounds[i].right); 2118 dest.writeInt(taskBounds[i].bottom); 2119 } 2120 dest.writeInt(displayId); 2121 } 2122 2123 public void readFromParcel(Parcel source) { 2124 stackId = source.readInt(); 2125 bounds = new Rect( 2126 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2127 taskIds = source.createIntArray(); 2128 taskNames = source.createStringArray(); 2129 final int boundsCount = source.readInt(); 2130 if (boundsCount > 0) { 2131 taskBounds = new Rect[boundsCount]; 2132 for (int i = 0; i < boundsCount; i++) { 2133 taskBounds[i] = new Rect(); 2134 taskBounds[i].set( 2135 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2136 } 2137 } else { 2138 taskBounds = null; 2139 } 2140 displayId = source.readInt(); 2141 } 2142 2143 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2144 @Override 2145 public StackInfo createFromParcel(Parcel source) { 2146 return new StackInfo(source); 2147 } 2148 @Override 2149 public StackInfo[] newArray(int size) { 2150 return new StackInfo[size]; 2151 } 2152 }; 2153 2154 public StackInfo() { 2155 } 2156 2157 private StackInfo(Parcel source) { 2158 readFromParcel(source); 2159 } 2160 2161 public String toString(String prefix) { 2162 StringBuilder sb = new StringBuilder(256); 2163 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2164 sb.append(" bounds="); sb.append(bounds.toShortString()); 2165 sb.append(" displayId="); sb.append(displayId); 2166 sb.append("\n"); 2167 prefix = prefix + " "; 2168 for (int i = 0; i < taskIds.length; ++i) { 2169 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2170 sb.append(": "); sb.append(taskNames[i]); 2171 if (taskBounds != null) { 2172 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2173 } 2174 sb.append("\n"); 2175 } 2176 return sb.toString(); 2177 } 2178 2179 @Override 2180 public String toString() { 2181 return toString(""); 2182 } 2183 } 2184 2185 /** 2186 * @hide 2187 */ 2188 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2189 try { 2190 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2191 observer, UserHandle.myUserId()); 2192 } catch (RemoteException e) { 2193 return false; 2194 } 2195 } 2196 2197 /** 2198 * Permits an application to erase its own data from disk. This is equivalent to 2199 * the user choosing to clear the app's data from within the device settings UI. It 2200 * erases all dynamic data associated with the app -- its private data and data in its 2201 * private area on external storage -- but does not remove the installed application 2202 * itself, nor any OBB files. 2203 * 2204 * @return {@code true} if the application successfully requested that the application's 2205 * data be erased; {@code false} otherwise. 2206 */ 2207 public boolean clearApplicationUserData() { 2208 return clearApplicationUserData(mContext.getPackageName(), null); 2209 } 2210 2211 /** 2212 * Information you can retrieve about any processes that are in an error condition. 2213 */ 2214 public static class ProcessErrorStateInfo implements Parcelable { 2215 /** 2216 * Condition codes 2217 */ 2218 public static final int NO_ERROR = 0; 2219 public static final int CRASHED = 1; 2220 public static final int NOT_RESPONDING = 2; 2221 2222 /** 2223 * The condition that the process is in. 2224 */ 2225 public int condition; 2226 2227 /** 2228 * The process name in which the crash or error occurred. 2229 */ 2230 public String processName; 2231 2232 /** 2233 * The pid of this process; 0 if none 2234 */ 2235 public int pid; 2236 2237 /** 2238 * The kernel user-ID that has been assigned to this process; 2239 * currently this is not a unique ID (multiple applications can have 2240 * the same uid). 2241 */ 2242 public int uid; 2243 2244 /** 2245 * The activity name associated with the error, if known. May be null. 2246 */ 2247 public String tag; 2248 2249 /** 2250 * A short message describing the error condition. 2251 */ 2252 public String shortMsg; 2253 2254 /** 2255 * A long message describing the error condition. 2256 */ 2257 public String longMsg; 2258 2259 /** 2260 * The stack trace where the error originated. May be null. 2261 */ 2262 public String stackTrace; 2263 2264 /** 2265 * to be deprecated: This value will always be null. 2266 */ 2267 public byte[] crashData = null; 2268 2269 public ProcessErrorStateInfo() { 2270 } 2271 2272 @Override 2273 public int describeContents() { 2274 return 0; 2275 } 2276 2277 @Override 2278 public void writeToParcel(Parcel dest, int flags) { 2279 dest.writeInt(condition); 2280 dest.writeString(processName); 2281 dest.writeInt(pid); 2282 dest.writeInt(uid); 2283 dest.writeString(tag); 2284 dest.writeString(shortMsg); 2285 dest.writeString(longMsg); 2286 dest.writeString(stackTrace); 2287 } 2288 2289 public void readFromParcel(Parcel source) { 2290 condition = source.readInt(); 2291 processName = source.readString(); 2292 pid = source.readInt(); 2293 uid = source.readInt(); 2294 tag = source.readString(); 2295 shortMsg = source.readString(); 2296 longMsg = source.readString(); 2297 stackTrace = source.readString(); 2298 } 2299 2300 public static final Creator<ProcessErrorStateInfo> CREATOR = 2301 new Creator<ProcessErrorStateInfo>() { 2302 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2303 return new ProcessErrorStateInfo(source); 2304 } 2305 public ProcessErrorStateInfo[] newArray(int size) { 2306 return new ProcessErrorStateInfo[size]; 2307 } 2308 }; 2309 2310 private ProcessErrorStateInfo(Parcel source) { 2311 readFromParcel(source); 2312 } 2313 } 2314 2315 /** 2316 * Returns a list of any processes that are currently in an error condition. The result 2317 * will be null if all processes are running properly at this time. 2318 * 2319 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2320 * current error conditions (it will not return an empty list). This list ordering is not 2321 * specified. 2322 */ 2323 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2324 try { 2325 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2326 } catch (RemoteException e) { 2327 return null; 2328 } 2329 } 2330 2331 /** 2332 * Information you can retrieve about a running process. 2333 */ 2334 public static class RunningAppProcessInfo implements Parcelable { 2335 /** 2336 * The name of the process that this object is associated with 2337 */ 2338 public String processName; 2339 2340 /** 2341 * The pid of this process; 0 if none 2342 */ 2343 public int pid; 2344 2345 /** 2346 * The user id of this process. 2347 */ 2348 public int uid; 2349 2350 /** 2351 * All packages that have been loaded into the process. 2352 */ 2353 public String pkgList[]; 2354 2355 /** 2356 * Constant for {@link #flags}: this is an app that is unable to 2357 * correctly save its state when going to the background, 2358 * so it can not be killed while in the background. 2359 * @hide 2360 */ 2361 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2362 2363 /** 2364 * Constant for {@link #flags}: this process is associated with a 2365 * persistent system app. 2366 * @hide 2367 */ 2368 public static final int FLAG_PERSISTENT = 1<<1; 2369 2370 /** 2371 * Constant for {@link #flags}: this process is associated with a 2372 * persistent system app. 2373 * @hide 2374 */ 2375 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2376 2377 /** 2378 * Flags of information. May be any of 2379 * {@link #FLAG_CANT_SAVE_STATE}. 2380 * @hide 2381 */ 2382 public int flags; 2383 2384 /** 2385 * Last memory trim level reported to the process: corresponds to 2386 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2387 * ComponentCallbacks2.onTrimMemory(int)}. 2388 */ 2389 public int lastTrimLevel; 2390 2391 /** 2392 * Constant for {@link #importance}: This process is running the 2393 * foreground UI; that is, it is the thing currently at the top of the screen 2394 * that the user is interacting with. 2395 */ 2396 public static final int IMPORTANCE_FOREGROUND = 100; 2397 2398 /** 2399 * Constant for {@link #importance}: This process is running a foreground 2400 * service, for example to perform music playback even while the user is 2401 * not immediately in the app. This generally indicates that the process 2402 * is doing something the user actively cares about. 2403 */ 2404 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2405 2406 /** 2407 * Constant for {@link #importance}: This process is running the foreground 2408 * UI, but the device is asleep so it is not visible to the user. This means 2409 * the user is not really aware of the process, because they can not see or 2410 * interact with it, but it is quite important because it what they expect to 2411 * return to once unlocking the device. 2412 */ 2413 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2414 2415 /** 2416 * Constant for {@link #importance}: This process is running something 2417 * that is actively visible to the user, though not in the immediate 2418 * foreground. This may be running a window that is behind the current 2419 * foreground (so paused and with its state saved, not interacting with 2420 * the user, but visible to them to some degree); it may also be running 2421 * other services under the system's control that it inconsiders important. 2422 */ 2423 public static final int IMPORTANCE_VISIBLE = 200; 2424 2425 /** 2426 * Constant for {@link #importance}: This process is not something the user 2427 * is directly aware of, but is otherwise perceptable to them to some degree. 2428 */ 2429 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2430 2431 /** 2432 * Constant for {@link #importance}: This process is running an 2433 * application that can not save its state, and thus can't be killed 2434 * while in the background. 2435 * @hide 2436 */ 2437 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2438 2439 /** 2440 * Constant for {@link #importance}: This process is contains services 2441 * that should remain running. These are background services apps have 2442 * started, not something the user is aware of, so they may be killed by 2443 * the system relatively freely (though it is generally desired that they 2444 * stay running as long as they want to). 2445 */ 2446 public static final int IMPORTANCE_SERVICE = 300; 2447 2448 /** 2449 * Constant for {@link #importance}: This process process contains 2450 * background code that is expendable. 2451 */ 2452 public static final int IMPORTANCE_BACKGROUND = 400; 2453 2454 /** 2455 * Constant for {@link #importance}: This process is empty of any 2456 * actively running code. 2457 */ 2458 public static final int IMPORTANCE_EMPTY = 500; 2459 2460 /** 2461 * Constant for {@link #importance}: This process does not exist. 2462 */ 2463 public static final int IMPORTANCE_GONE = 1000; 2464 2465 /** @hide */ 2466 public static int procStateToImportance(int procState) { 2467 if (procState == PROCESS_STATE_NONEXISTENT) { 2468 return IMPORTANCE_GONE; 2469 } else if (procState >= PROCESS_STATE_HOME) { 2470 return IMPORTANCE_BACKGROUND; 2471 } else if (procState >= PROCESS_STATE_SERVICE) { 2472 return IMPORTANCE_SERVICE; 2473 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2474 return IMPORTANCE_CANT_SAVE_STATE; 2475 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2476 return IMPORTANCE_PERCEPTIBLE; 2477 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2478 return IMPORTANCE_VISIBLE; 2479 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2480 return IMPORTANCE_TOP_SLEEPING; 2481 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2482 return IMPORTANCE_FOREGROUND_SERVICE; 2483 } else { 2484 return IMPORTANCE_FOREGROUND; 2485 } 2486 } 2487 2488 /** 2489 * The relative importance level that the system places on this 2490 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2491 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2492 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2493 * constants are numbered so that "more important" values are always 2494 * smaller than "less important" values. 2495 */ 2496 public int importance; 2497 2498 /** 2499 * An additional ordering within a particular {@link #importance} 2500 * category, providing finer-grained information about the relative 2501 * utility of processes within a category. This number means nothing 2502 * except that a smaller values are more recently used (and thus 2503 * more important). Currently an LRU value is only maintained for 2504 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2505 * be maintained in the future. 2506 */ 2507 public int lru; 2508 2509 /** 2510 * Constant for {@link #importanceReasonCode}: nothing special has 2511 * been specified for the reason for this level. 2512 */ 2513 public static final int REASON_UNKNOWN = 0; 2514 2515 /** 2516 * Constant for {@link #importanceReasonCode}: one of the application's 2517 * content providers is being used by another process. The pid of 2518 * the client process is in {@link #importanceReasonPid} and the 2519 * target provider in this process is in 2520 * {@link #importanceReasonComponent}. 2521 */ 2522 public static final int REASON_PROVIDER_IN_USE = 1; 2523 2524 /** 2525 * Constant for {@link #importanceReasonCode}: one of the application's 2526 * content providers is being used by another process. The pid of 2527 * the client process is in {@link #importanceReasonPid} and the 2528 * target provider in this process is in 2529 * {@link #importanceReasonComponent}. 2530 */ 2531 public static final int REASON_SERVICE_IN_USE = 2; 2532 2533 /** 2534 * The reason for {@link #importance}, if any. 2535 */ 2536 public int importanceReasonCode; 2537 2538 /** 2539 * For the specified values of {@link #importanceReasonCode}, this 2540 * is the process ID of the other process that is a client of this 2541 * process. This will be 0 if no other process is using this one. 2542 */ 2543 public int importanceReasonPid; 2544 2545 /** 2546 * For the specified values of {@link #importanceReasonCode}, this 2547 * is the name of the component that is being used in this process. 2548 */ 2549 public ComponentName importanceReasonComponent; 2550 2551 /** 2552 * When {@link #importanceReasonPid} is non-0, this is the importance 2553 * of the other pid. @hide 2554 */ 2555 public int importanceReasonImportance; 2556 2557 /** 2558 * Current process state, as per PROCESS_STATE_* constants. 2559 * @hide 2560 */ 2561 public int processState; 2562 2563 public RunningAppProcessInfo() { 2564 importance = IMPORTANCE_FOREGROUND; 2565 importanceReasonCode = REASON_UNKNOWN; 2566 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2567 } 2568 2569 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2570 processName = pProcessName; 2571 pid = pPid; 2572 pkgList = pArr; 2573 } 2574 2575 public int describeContents() { 2576 return 0; 2577 } 2578 2579 public void writeToParcel(Parcel dest, int flags) { 2580 dest.writeString(processName); 2581 dest.writeInt(pid); 2582 dest.writeInt(uid); 2583 dest.writeStringArray(pkgList); 2584 dest.writeInt(this.flags); 2585 dest.writeInt(lastTrimLevel); 2586 dest.writeInt(importance); 2587 dest.writeInt(lru); 2588 dest.writeInt(importanceReasonCode); 2589 dest.writeInt(importanceReasonPid); 2590 ComponentName.writeToParcel(importanceReasonComponent, dest); 2591 dest.writeInt(importanceReasonImportance); 2592 dest.writeInt(processState); 2593 } 2594 2595 public void readFromParcel(Parcel source) { 2596 processName = source.readString(); 2597 pid = source.readInt(); 2598 uid = source.readInt(); 2599 pkgList = source.readStringArray(); 2600 flags = source.readInt(); 2601 lastTrimLevel = source.readInt(); 2602 importance = source.readInt(); 2603 lru = source.readInt(); 2604 importanceReasonCode = source.readInt(); 2605 importanceReasonPid = source.readInt(); 2606 importanceReasonComponent = ComponentName.readFromParcel(source); 2607 importanceReasonImportance = source.readInt(); 2608 processState = source.readInt(); 2609 } 2610 2611 public static final Creator<RunningAppProcessInfo> CREATOR = 2612 new Creator<RunningAppProcessInfo>() { 2613 public RunningAppProcessInfo createFromParcel(Parcel source) { 2614 return new RunningAppProcessInfo(source); 2615 } 2616 public RunningAppProcessInfo[] newArray(int size) { 2617 return new RunningAppProcessInfo[size]; 2618 } 2619 }; 2620 2621 private RunningAppProcessInfo(Parcel source) { 2622 readFromParcel(source); 2623 } 2624 } 2625 2626 /** 2627 * Returns a list of application processes installed on external media 2628 * that are running on the device. 2629 * 2630 * <p><b>Note: this method is only intended for debugging or building 2631 * a user-facing process management UI.</b></p> 2632 * 2633 * @return Returns a list of ApplicationInfo records, or null if none 2634 * This list ordering is not specified. 2635 * @hide 2636 */ 2637 public List<ApplicationInfo> getRunningExternalApplications() { 2638 try { 2639 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2640 } catch (RemoteException e) { 2641 return null; 2642 } 2643 } 2644 2645 /** 2646 * Sets the memory trim mode for a process and schedules a memory trim operation. 2647 * 2648 * <p><b>Note: this method is only intended for testing framework.</b></p> 2649 * 2650 * @return Returns true if successful. 2651 * @hide 2652 */ 2653 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2654 try { 2655 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2656 level); 2657 } catch (RemoteException e) { 2658 return false; 2659 } 2660 } 2661 2662 /** 2663 * Returns a list of application processes that are running on the device. 2664 * 2665 * <p><b>Note: this method is only intended for debugging or building 2666 * a user-facing process management UI.</b></p> 2667 * 2668 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2669 * running processes (it will not return an empty list). This list ordering is not 2670 * specified. 2671 */ 2672 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2673 try { 2674 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2675 } catch (RemoteException e) { 2676 return null; 2677 } 2678 } 2679 2680 /** 2681 * Return the importance of a given package name, based on the processes that are 2682 * currently running. The return value is one of the importance constants defined 2683 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2684 * processes that this package has code running inside of. If there are no processes 2685 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2686 * @hide 2687 */ 2688 @SystemApi 2689 public int getPackageImportance(String packageName) { 2690 try { 2691 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2692 mContext.getOpPackageName()); 2693 return RunningAppProcessInfo.procStateToImportance(procState); 2694 } catch (RemoteException e) { 2695 return RunningAppProcessInfo.IMPORTANCE_GONE; 2696 } 2697 } 2698 2699 /** 2700 * Return global memory state information for the calling process. This 2701 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2702 * only fields that will be filled in are 2703 * {@link RunningAppProcessInfo#pid}, 2704 * {@link RunningAppProcessInfo#uid}, 2705 * {@link RunningAppProcessInfo#lastTrimLevel}, 2706 * {@link RunningAppProcessInfo#importance}, 2707 * {@link RunningAppProcessInfo#lru}, and 2708 * {@link RunningAppProcessInfo#importanceReasonCode}. 2709 */ 2710 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2711 try { 2712 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2713 } catch (RemoteException e) { 2714 } 2715 } 2716 2717 /** 2718 * Return information about the memory usage of one or more processes. 2719 * 2720 * <p><b>Note: this method is only intended for debugging or building 2721 * a user-facing process management UI.</b></p> 2722 * 2723 * @param pids The pids of the processes whose memory usage is to be 2724 * retrieved. 2725 * @return Returns an array of memory information, one for each 2726 * requested pid. 2727 */ 2728 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2729 try { 2730 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2731 } catch (RemoteException e) { 2732 return null; 2733 } 2734 } 2735 2736 /** 2737 * @deprecated This is now just a wrapper for 2738 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2739 * is no longer available to applications because it allows them to 2740 * break other applications by removing their alarms, stopping their 2741 * services, etc. 2742 */ 2743 @Deprecated 2744 public void restartPackage(String packageName) { 2745 killBackgroundProcesses(packageName); 2746 } 2747 2748 /** 2749 * Have the system immediately kill all background processes associated 2750 * with the given package. This is the same as the kernel killing those 2751 * processes to reclaim memory; the system will take care of restarting 2752 * these processes in the future as needed. 2753 * 2754 * <p>You must hold the permission 2755 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2756 * call this method. 2757 * 2758 * @param packageName The name of the package whose processes are to 2759 * be killed. 2760 */ 2761 public void killBackgroundProcesses(String packageName) { 2762 try { 2763 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2764 UserHandle.myUserId()); 2765 } catch (RemoteException e) { 2766 } 2767 } 2768 2769 /** 2770 * Kills the specified UID. 2771 * @param uid The UID to kill. 2772 * @param reason The reason for the kill. 2773 * 2774 * @hide 2775 */ 2776 @RequiresPermission(Manifest.permission.KILL_UID) 2777 public void killUid(int uid, String reason) { 2778 try { 2779 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2780 UserHandle.getUserId(uid), reason); 2781 } catch (RemoteException e) { 2782 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2783 } 2784 } 2785 2786 /** 2787 * Have the system perform a force stop of everything associated with 2788 * the given application package. All processes that share its uid 2789 * will be killed, all services it has running stopped, all activities 2790 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2791 * broadcast will be sent, so that any of its registered alarms can 2792 * be stopped, notifications removed, etc. 2793 * 2794 * <p>You must hold the permission 2795 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2796 * call this method. 2797 * 2798 * @param packageName The name of the package to be stopped. 2799 * @param userId The user for which the running package is to be stopped. 2800 * 2801 * @hide This is not available to third party applications due to 2802 * it allowing them to break other applications by stopping their 2803 * services, removing their alarms, etc. 2804 */ 2805 public void forceStopPackageAsUser(String packageName, int userId) { 2806 try { 2807 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2808 } catch (RemoteException e) { 2809 } 2810 } 2811 2812 /** 2813 * @see #forceStopPackageAsUser(String, int) 2814 * @hide 2815 */ 2816 public void forceStopPackage(String packageName) { 2817 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2818 } 2819 2820 /** 2821 * Get the device configuration attributes. 2822 */ 2823 public ConfigurationInfo getDeviceConfigurationInfo() { 2824 try { 2825 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2826 } catch (RemoteException e) { 2827 } 2828 return null; 2829 } 2830 2831 /** 2832 * Get the preferred density of icons for the launcher. This is used when 2833 * custom drawables are created (e.g., for shortcuts). 2834 * 2835 * @return density in terms of DPI 2836 */ 2837 public int getLauncherLargeIconDensity() { 2838 final Resources res = mContext.getResources(); 2839 final int density = res.getDisplayMetrics().densityDpi; 2840 final int sw = res.getConfiguration().smallestScreenWidthDp; 2841 2842 if (sw < 600) { 2843 // Smaller than approx 7" tablets, use the regular icon size. 2844 return density; 2845 } 2846 2847 switch (density) { 2848 case DisplayMetrics.DENSITY_LOW: 2849 return DisplayMetrics.DENSITY_MEDIUM; 2850 case DisplayMetrics.DENSITY_MEDIUM: 2851 return DisplayMetrics.DENSITY_HIGH; 2852 case DisplayMetrics.DENSITY_TV: 2853 return DisplayMetrics.DENSITY_XHIGH; 2854 case DisplayMetrics.DENSITY_HIGH: 2855 return DisplayMetrics.DENSITY_XHIGH; 2856 case DisplayMetrics.DENSITY_XHIGH: 2857 return DisplayMetrics.DENSITY_XXHIGH; 2858 case DisplayMetrics.DENSITY_XXHIGH: 2859 return DisplayMetrics.DENSITY_XHIGH * 2; 2860 default: 2861 // The density is some abnormal value. Return some other 2862 // abnormal value that is a reasonable scaling of it. 2863 return (int)((density*1.5f)+.5f); 2864 } 2865 } 2866 2867 /** 2868 * Get the preferred launcher icon size. This is used when custom drawables 2869 * are created (e.g., for shortcuts). 2870 * 2871 * @return dimensions of square icons in terms of pixels 2872 */ 2873 public int getLauncherLargeIconSize() { 2874 return getLauncherLargeIconSizeInner(mContext); 2875 } 2876 2877 static int getLauncherLargeIconSizeInner(Context context) { 2878 final Resources res = context.getResources(); 2879 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2880 final int sw = res.getConfiguration().smallestScreenWidthDp; 2881 2882 if (sw < 600) { 2883 // Smaller than approx 7" tablets, use the regular icon size. 2884 return size; 2885 } 2886 2887 final int density = res.getDisplayMetrics().densityDpi; 2888 2889 switch (density) { 2890 case DisplayMetrics.DENSITY_LOW: 2891 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2892 case DisplayMetrics.DENSITY_MEDIUM: 2893 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2894 case DisplayMetrics.DENSITY_TV: 2895 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2896 case DisplayMetrics.DENSITY_HIGH: 2897 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2898 case DisplayMetrics.DENSITY_XHIGH: 2899 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2900 case DisplayMetrics.DENSITY_XXHIGH: 2901 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2902 default: 2903 // The density is some abnormal value. Return some other 2904 // abnormal value that is a reasonable scaling of it. 2905 return (int)((size*1.5f) + .5f); 2906 } 2907 } 2908 2909 /** 2910 * Returns "true" if the user interface is currently being messed with 2911 * by a monkey. 2912 */ 2913 public static boolean isUserAMonkey() { 2914 try { 2915 return ActivityManagerNative.getDefault().isUserAMonkey(); 2916 } catch (RemoteException e) { 2917 } 2918 return false; 2919 } 2920 2921 /** 2922 * Returns "true" if device is running in a test harness. 2923 */ 2924 public static boolean isRunningInTestHarness() { 2925 return SystemProperties.getBoolean("ro.test_harness", false); 2926 } 2927 2928 /** 2929 * Returns the launch count of each installed package. 2930 * 2931 * @hide 2932 */ 2933 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2934 try { 2935 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2936 ServiceManager.getService("usagestats")); 2937 if (usageStatsService == null) { 2938 return new HashMap<String, Integer>(); 2939 } 2940 2941 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2942 ActivityThread.currentPackageName()); 2943 if (allPkgUsageStats == null) { 2944 return new HashMap<String, Integer>(); 2945 } 2946 2947 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2948 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2949 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2950 } 2951 2952 return launchCounts; 2953 } catch (RemoteException e) { 2954 Log.w(TAG, "Could not query launch counts", e); 2955 return new HashMap<String, Integer>(); 2956 } 2957 }*/ 2958 2959 /** @hide */ 2960 public static int checkComponentPermission(String permission, int uid, 2961 int owningUid, boolean exported) { 2962 // Root, system server get to do everything. 2963 final int appId = UserHandle.getAppId(uid); 2964 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2965 return PackageManager.PERMISSION_GRANTED; 2966 } 2967 // Isolated processes don't get any permissions. 2968 if (UserHandle.isIsolated(uid)) { 2969 return PackageManager.PERMISSION_DENIED; 2970 } 2971 // If there is a uid that owns whatever is being accessed, it has 2972 // blanket access to it regardless of the permissions it requires. 2973 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2974 return PackageManager.PERMISSION_GRANTED; 2975 } 2976 // If the target is not exported, then nobody else can get to it. 2977 if (!exported) { 2978 /* 2979 RuntimeException here = new RuntimeException("here"); 2980 here.fillInStackTrace(); 2981 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2982 here); 2983 */ 2984 return PackageManager.PERMISSION_DENIED; 2985 } 2986 if (permission == null) { 2987 return PackageManager.PERMISSION_GRANTED; 2988 } 2989 try { 2990 return AppGlobals.getPackageManager() 2991 .checkUidPermission(permission, uid); 2992 } catch (RemoteException e) { 2993 // Should never happen, but if it does... deny! 2994 Slog.e(TAG, "PackageManager is dead?!?", e); 2995 } 2996 return PackageManager.PERMISSION_DENIED; 2997 } 2998 2999 /** @hide */ 3000 public static int checkUidPermission(String permission, int uid) { 3001 try { 3002 return AppGlobals.getPackageManager() 3003 .checkUidPermission(permission, uid); 3004 } catch (RemoteException e) { 3005 // Should never happen, but if it does... deny! 3006 Slog.e(TAG, "PackageManager is dead?!?", e); 3007 } 3008 return PackageManager.PERMISSION_DENIED; 3009 } 3010 3011 /** 3012 * @hide 3013 * Helper for dealing with incoming user arguments to system service calls. 3014 * Takes care of checking permissions and converting USER_CURRENT to the 3015 * actual current user. 3016 * 3017 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3018 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3019 * @param userId The user id argument supplied by the caller -- this is the user 3020 * they want to run as. 3021 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3022 * to get a USER_ALL returned and deal with it correctly. If false, 3023 * an exception will be thrown if USER_ALL is supplied. 3024 * @param requireFull If true, the caller must hold 3025 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3026 * different user than their current process; otherwise they must hold 3027 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3028 * @param name Optional textual name of the incoming call; only for generating error messages. 3029 * @param callerPackage Optional package name of caller; only for error messages. 3030 * 3031 * @return Returns the user ID that the call should run as. Will always be a concrete 3032 * user number, unless <var>allowAll</var> is true in which case it could also be 3033 * USER_ALL. 3034 */ 3035 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3036 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3037 if (UserHandle.getUserId(callingUid) == userId) { 3038 return userId; 3039 } 3040 try { 3041 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3042 callingUid, userId, allowAll, requireFull, name, callerPackage); 3043 } catch (RemoteException e) { 3044 throw new SecurityException("Failed calling activity manager", e); 3045 } 3046 } 3047 3048 /** 3049 * Gets the userId of the current foreground user. Requires system permissions. 3050 * @hide 3051 */ 3052 @SystemApi 3053 public static int getCurrentUser() { 3054 UserInfo ui; 3055 try { 3056 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3057 return ui != null ? ui.id : 0; 3058 } catch (RemoteException e) { 3059 return 0; 3060 } 3061 } 3062 3063 /** 3064 * @param userid the user's id. Zero indicates the default user. 3065 * @hide 3066 */ 3067 public boolean switchUser(int userid) { 3068 try { 3069 return ActivityManagerNative.getDefault().switchUser(userid); 3070 } catch (RemoteException e) { 3071 return false; 3072 } 3073 } 3074 3075 /** {@hide} */ 3076 public static final int FLAG_OR_STOPPED = 1 << 0; 3077 /** {@hide} */ 3078 public static final int FLAG_WITH_AMNESIA = 1 << 1; 3079 3080 /** 3081 * Return whether the given user is actively running. This means that 3082 * the user is in the "started" state, not "stopped" -- it is currently 3083 * allowed to run code through scheduled alarms, receiving broadcasts, 3084 * etc. A started user may be either the current foreground user or a 3085 * background user; the result here does not distinguish between the two. 3086 * @param userid the user's id. Zero indicates the default user. 3087 * @hide 3088 */ 3089 public boolean isUserRunning(int userid) { 3090 try { 3091 return ActivityManagerNative.getDefault().isUserRunning(userid, 0); 3092 } catch (RemoteException e) { 3093 return false; 3094 } 3095 } 3096 3097 /** 3098 * Perform a system dump of various state associated with the given application 3099 * package name. This call blocks while the dump is being performed, so should 3100 * not be done on a UI thread. The data will be written to the given file 3101 * descriptor as text. An application must hold the 3102 * {@link android.Manifest.permission#DUMP} permission to make this call. 3103 * @param fd The file descriptor that the dump should be written to. The file 3104 * descriptor is <em>not</em> closed by this function; the caller continues to 3105 * own it. 3106 * @param packageName The name of the package that is to be dumped. 3107 */ 3108 public void dumpPackageState(FileDescriptor fd, String packageName) { 3109 dumpPackageStateStatic(fd, packageName); 3110 } 3111 3112 /** 3113 * @hide 3114 */ 3115 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3116 FileOutputStream fout = new FileOutputStream(fd); 3117 PrintWriter pw = new FastPrintWriter(fout); 3118 dumpService(pw, fd, "package", new String[] { packageName }); 3119 pw.println(); 3120 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3121 "-a", "package", packageName }); 3122 pw.println(); 3123 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3124 pw.println(); 3125 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3126 pw.println(); 3127 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3128 pw.println(); 3129 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3130 pw.flush(); 3131 } 3132 3133 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3134 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3135 IBinder service = ServiceManager.checkService(name); 3136 if (service == null) { 3137 pw.println(" (Service not found)"); 3138 return; 3139 } 3140 TransferPipe tp = null; 3141 try { 3142 pw.flush(); 3143 tp = new TransferPipe(); 3144 tp.setBufferPrefix(" "); 3145 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3146 tp.go(fd, 10000); 3147 } catch (Throwable e) { 3148 if (tp != null) { 3149 tp.kill(); 3150 } 3151 pw.println("Failure dumping service:"); 3152 e.printStackTrace(pw); 3153 } 3154 } 3155 3156 /** 3157 * Request that the system start watching for the calling process to exceed a pss 3158 * size as given here. Once called, the system will look for any occasions where it 3159 * sees the associated process with a larger pss size and, when this happens, automatically 3160 * pull a heap dump from it and allow the user to share the data. Note that this request 3161 * continues running even if the process is killed and restarted. To remove the watch, 3162 * use {@link #clearWatchHeapLimit()}. 3163 * 3164 * <p>This API only work if the calling process has been marked as 3165 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3166 * (userdebug or eng) build.</p> 3167 * 3168 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3169 * handle heap limit reports themselves.</p> 3170 * 3171 * @param pssSize The size in bytes to set the limit at. 3172 */ 3173 public void setWatchHeapLimit(long pssSize) { 3174 try { 3175 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3176 mContext.getPackageName()); 3177 } catch (RemoteException e) { 3178 } 3179 } 3180 3181 /** 3182 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3183 * If your package has an activity handling this action, it will be launched with the 3184 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3185 * match the activty must support this action and a MIME type of "*/*". 3186 */ 3187 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3188 3189 /** 3190 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3191 */ 3192 public void clearWatchHeapLimit() { 3193 try { 3194 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3195 } catch (RemoteException e) { 3196 } 3197 } 3198 3199 /** 3200 * @hide 3201 */ 3202 public void startLockTaskMode(int taskId) { 3203 try { 3204 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3205 } catch (RemoteException e) { 3206 } 3207 } 3208 3209 /** 3210 * @hide 3211 */ 3212 public void stopLockTaskMode() { 3213 try { 3214 ActivityManagerNative.getDefault().stopLockTaskMode(); 3215 } catch (RemoteException e) { 3216 } 3217 } 3218 3219 /** 3220 * Return whether currently in lock task mode. When in this mode 3221 * no new tasks can be created or switched to. 3222 * 3223 * @see Activity#startLockTask() 3224 * 3225 * @deprecated Use {@link #getLockTaskModeState} instead. 3226 */ 3227 public boolean isInLockTaskMode() { 3228 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3229 } 3230 3231 /** 3232 * Return the current state of task locking. The three possible outcomes 3233 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3234 * and {@link #LOCK_TASK_MODE_PINNED}. 3235 * 3236 * @see Activity#startLockTask() 3237 */ 3238 public int getLockTaskModeState() { 3239 try { 3240 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3241 } catch (RemoteException e) { 3242 return ActivityManager.LOCK_TASK_MODE_NONE; 3243 } 3244 } 3245 3246 /** 3247 * The AppTask allows you to manage your own application's tasks. 3248 * See {@link android.app.ActivityManager#getAppTasks()} 3249 */ 3250 public static class AppTask { 3251 private IAppTask mAppTaskImpl; 3252 3253 /** @hide */ 3254 public AppTask(IAppTask task) { 3255 mAppTaskImpl = task; 3256 } 3257 3258 /** 3259 * Finishes all activities in this task and removes it from the recent tasks list. 3260 */ 3261 public void finishAndRemoveTask() { 3262 try { 3263 mAppTaskImpl.finishAndRemoveTask(); 3264 } catch (RemoteException e) { 3265 Slog.e(TAG, "Invalid AppTask", e); 3266 } 3267 } 3268 3269 /** 3270 * Get the RecentTaskInfo associated with this task. 3271 * 3272 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3273 */ 3274 public RecentTaskInfo getTaskInfo() { 3275 try { 3276 return mAppTaskImpl.getTaskInfo(); 3277 } catch (RemoteException e) { 3278 Slog.e(TAG, "Invalid AppTask", e); 3279 return null; 3280 } 3281 } 3282 3283 /** 3284 * Bring this task to the foreground. If it contains activities, they will be 3285 * brought to the foreground with it and their instances re-created if needed. 3286 * If it doesn't contain activities, the root activity of the task will be 3287 * re-launched. 3288 */ 3289 public void moveToFront() { 3290 try { 3291 mAppTaskImpl.moveToFront(); 3292 } catch (RemoteException e) { 3293 Slog.e(TAG, "Invalid AppTask", e); 3294 } 3295 } 3296 3297 /** 3298 * Start an activity in this task. Brings the task to the foreground. If this task 3299 * is not currently active (that is, its id < 0), then a new activity for the given 3300 * Intent will be launched as the root of the task and the task brought to the 3301 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3302 * an activity to launch in a new task, then a new activity for the given Intent will 3303 * be launched on top of the task and the task brought to the foreground. If this 3304 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3305 * or would otherwise be launched in to a new task, then the activity not launched but 3306 * this task be brought to the foreground and a new intent delivered to the top 3307 * activity if appropriate. 3308 * 3309 * <p>In other words, you generally want to use an Intent here that does not specify 3310 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3311 * and let the system do the right thing.</p> 3312 * 3313 * @param intent The Intent describing the new activity to be launched on the task. 3314 * @param options Optional launch options. 3315 * 3316 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3317 */ 3318 public void startActivity(Context context, Intent intent, Bundle options) { 3319 ActivityThread thread = ActivityThread.currentActivityThread(); 3320 thread.getInstrumentation().execStartActivityFromAppTask(context, 3321 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3322 } 3323 3324 /** 3325 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3326 * Intent of this AppTask. 3327 * 3328 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3329 * be set; otherwise, it will be cleared. 3330 */ 3331 public void setExcludeFromRecents(boolean exclude) { 3332 try { 3333 mAppTaskImpl.setExcludeFromRecents(exclude); 3334 } catch (RemoteException e) { 3335 Slog.e(TAG, "Invalid AppTask", e); 3336 } 3337 } 3338 } 3339} 3340