ActivityManager.java revision c6a2da07bf6334818c184fed486cecf39976f089
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 requestType for assist context: only basic information. */ 331 public static final int ASSIST_CONTEXT_BASIC = 0; 332 333 /** @hide requestType for assist context: generate full AssistStructure. */ 334 public static final int ASSIST_CONTEXT_FULL = 1; 335 336 /** 337 * Lock task mode is not active. 338 */ 339 public static final int LOCK_TASK_MODE_NONE = 0; 340 341 /** 342 * Full lock task mode is active. 343 */ 344 public static final int LOCK_TASK_MODE_LOCKED = 1; 345 346 /** 347 * App pinning mode is active. 348 */ 349 public static final int LOCK_TASK_MODE_PINNED = 2; 350 351 Point mAppTaskThumbnailSize; 352 353 /*package*/ ActivityManager(Context context, Handler handler) { 354 mContext = context; 355 mHandler = handler; 356 } 357 358 /** 359 * Screen compatibility mode: the application most always run in 360 * compatibility mode. 361 * @hide 362 */ 363 public static final int COMPAT_MODE_ALWAYS = -1; 364 365 /** 366 * Screen compatibility mode: the application can never run in 367 * compatibility mode. 368 * @hide 369 */ 370 public static final int COMPAT_MODE_NEVER = -2; 371 372 /** 373 * Screen compatibility mode: unknown. 374 * @hide 375 */ 376 public static final int COMPAT_MODE_UNKNOWN = -3; 377 378 /** 379 * Screen compatibility mode: the application currently has compatibility 380 * mode disabled. 381 * @hide 382 */ 383 public static final int COMPAT_MODE_DISABLED = 0; 384 385 /** 386 * Screen compatibility mode: the application currently has compatibility 387 * mode enabled. 388 * @hide 389 */ 390 public static final int COMPAT_MODE_ENABLED = 1; 391 392 /** 393 * Screen compatibility mode: request to toggle the application's 394 * compatibility mode. 395 * @hide 396 */ 397 public static final int COMPAT_MODE_TOGGLE = 2; 398 399 /** @hide */ 400 public static class StackId { 401 /** Invalid stack ID. */ 402 public static final int INVALID_STACK_ID = -1; 403 404 /** First static stack ID. */ 405 public static final int FIRST_STATIC_STACK_ID = 0; 406 407 /** Home activity stack ID. */ 408 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 409 410 /** ID of stack where fullscreen activities are normally launched into. */ 411 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 412 413 /** ID of stack where freeform/resized activities are normally launched into. */ 414 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 415 416 /** ID of stack that occupies a dedicated region of the screen. */ 417 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 418 419 /** ID of stack that always on top (always visible) when it exist. */ 420 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 421 422 /** Last static stack stack ID. */ 423 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 424 425 /** Start of ID range used by stacks that are created dynamically. */ 426 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 427 428 public static boolean isStaticStack(int stackId) { 429 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 430 } 431 432 /** 433 * Returns true if the activities contained in the input stack display a shadow around 434 * their border. 435 */ 436 public static boolean hasWindowShadow(int stackId) { 437 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 438 } 439 440 /** 441 * Returns true if the activities contained in the input stack display a decor view. 442 */ 443 public static boolean hasWindowDecor(int stackId) { 444 return stackId == FREEFORM_WORKSPACE_STACK_ID; 445 } 446 447 /** 448 * Returns true if the tasks contained in the stack can be resized independently of the 449 * stack. 450 */ 451 public static boolean isTaskResizeAllowed(int stackId) { 452 return stackId == FREEFORM_WORKSPACE_STACK_ID; 453 } 454 455 /** 456 * Returns true if the task bounds should persist across power cycles. 457 */ 458 public static boolean persistTaskBounds(int stackId) { 459 return isStaticStack(stackId) && 460 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 461 } 462 463 /** 464 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 465 */ 466 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 467 return stackId == PINNED_STACK_ID; 468 } 469 470 /** 471 * Returns true if we try to maintain focus in the current stack when the top activity 472 * finishes. 473 */ 474 public static boolean keepFocusInStackIfPossible(int stackId) { 475 return stackId == FREEFORM_WORKSPACE_STACK_ID 476 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 477 } 478 479 /** 480 * Returns true if Stack size is affected by the docked stack changing size. 481 */ 482 public static boolean isResizeableByDockedStack(int stackId) { 483 return isStaticStack(stackId) && 484 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 485 } 486 487 /** 488 * Returns true if the size of tasks in the input stack are affected by the docked stack 489 * changing size. 490 */ 491 public static boolean isTaskResizeableByDockedStack(int stackId) { 492 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 493 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 494 } 495 496 /** 497 * Returns true if the windows of tasks being moved to this stack should be preserved so 498 * there isn't a display gap. 499 */ 500 public static boolean preserveWindowOnTaskMove(int stackId) { 501 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 502 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 503 } 504 } 505 506 /** 507 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 508 * specifies the position of the created docked stack at the top half of the screen if 509 * in portrait mode or at the left half of the screen if in landscape mode. 510 * @hide 511 */ 512 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 513 514 /** 515 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 516 * specifies the position of the created docked stack at the bottom half of the screen if 517 * in portrait mode or at the right half of the screen if in landscape mode. 518 * @hide 519 */ 520 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 521 522 /** 523 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 524 * that the resize doesn't need to preserve the window, and can be skipped if bounds 525 * is unchanged. This mode is used by window manager in most cases. 526 * @hide 527 */ 528 public static final int RESIZE_MODE_SYSTEM = 0; 529 530 /** 531 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 532 * that the resize should preserve the window if possible. 533 * @hide 534 */ 535 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 536 537 /** 538 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 539 * that the resize should be performed even if the bounds appears unchanged. 540 * @hide 541 */ 542 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 543 544 /** 545 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 546 * manager during a screen rotation. 547 * @hide 548 */ 549 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 550 551 /** 552 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 553 * resize is due to a drag action. 554 * @hide 555 */ 556 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 557 558 /** 559 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 560 * that the resize should preserve the window if possible, and should not be skipped 561 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 562 * is ending. 563 * @hide 564 */ 565 public static final int RESIZE_MODE_USER_FORCED = 566 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 567 568 /** @hide */ 569 public int getFrontActivityScreenCompatMode() { 570 try { 571 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 572 } catch (RemoteException e) { 573 // System dead, we will be dead too soon! 574 return 0; 575 } 576 } 577 578 /** @hide */ 579 public void setFrontActivityScreenCompatMode(int mode) { 580 try { 581 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 582 } catch (RemoteException e) { 583 // System dead, we will be dead too soon! 584 } 585 } 586 587 /** @hide */ 588 public int getPackageScreenCompatMode(String packageName) { 589 try { 590 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 591 } catch (RemoteException e) { 592 // System dead, we will be dead too soon! 593 return 0; 594 } 595 } 596 597 /** @hide */ 598 public void setPackageScreenCompatMode(String packageName, int mode) { 599 try { 600 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 601 } catch (RemoteException e) { 602 // System dead, we will be dead too soon! 603 } 604 } 605 606 /** @hide */ 607 public boolean getPackageAskScreenCompat(String packageName) { 608 try { 609 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 610 } catch (RemoteException e) { 611 // System dead, we will be dead too soon! 612 return false; 613 } 614 } 615 616 /** @hide */ 617 public void setPackageAskScreenCompat(String packageName, boolean ask) { 618 try { 619 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 620 } catch (RemoteException e) { 621 // System dead, we will be dead too soon! 622 } 623 } 624 625 /** 626 * Return the approximate per-application memory class of the current 627 * device. This gives you an idea of how hard a memory limit you should 628 * impose on your application to let the overall system work best. The 629 * returned value is in megabytes; the baseline Android memory class is 630 * 16 (which happens to be the Java heap limit of those devices); some 631 * device with more memory may return 24 or even higher numbers. 632 */ 633 public int getMemoryClass() { 634 return staticGetMemoryClass(); 635 } 636 637 /** @hide */ 638 static public int staticGetMemoryClass() { 639 // Really brain dead right now -- just take this from the configured 640 // vm heap size, and assume it is in megabytes and thus ends with "m". 641 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 642 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 643 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 644 } 645 return staticGetLargeMemoryClass(); 646 } 647 648 /** 649 * Return the approximate per-application memory class of the current 650 * device when an application is running with a large heap. This is the 651 * space available for memory-intensive applications; most applications 652 * should not need this amount of memory, and should instead stay with the 653 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 654 * This may be the same size as {@link #getMemoryClass()} on memory 655 * constrained devices, or it may be significantly larger on devices with 656 * a large amount of available RAM. 657 * 658 * <p>The is the size of the application's Dalvik heap if it has 659 * specified <code>android:largeHeap="true"</code> in its manifest. 660 */ 661 public int getLargeMemoryClass() { 662 return staticGetLargeMemoryClass(); 663 } 664 665 /** @hide */ 666 static public int staticGetLargeMemoryClass() { 667 // Really brain dead right now -- just take this from the configured 668 // vm heap size, and assume it is in megabytes and thus ends with "m". 669 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 670 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 671 } 672 673 /** 674 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 675 * is ultimately up to the device configuration, but currently it generally means 676 * something in the class of a 512MB device with about a 800x480 or less screen. 677 * This is mostly intended to be used by apps to determine whether they should turn 678 * off certain features that require more RAM. 679 */ 680 public boolean isLowRamDevice() { 681 return isLowRamDeviceStatic(); 682 } 683 684 /** @hide */ 685 public static boolean isLowRamDeviceStatic() { 686 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 687 } 688 689 /** 690 * Used by persistent processes to determine if they are running on a 691 * higher-end device so should be okay using hardware drawing acceleration 692 * (which tends to consume a lot more RAM). 693 * @hide 694 */ 695 static public boolean isHighEndGfx() { 696 return !isLowRamDeviceStatic() && 697 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 698 } 699 700 /** 701 * Return the maximum number of recents entries that we will maintain and show. 702 * @hide 703 */ 704 static public int getMaxRecentTasksStatic() { 705 if (gMaxRecentTasks < 0) { 706 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 707 } 708 return gMaxRecentTasks; 709 } 710 711 /** 712 * Return the default limit on the number of recents that an app can make. 713 * @hide 714 */ 715 static public int getDefaultAppRecentsLimitStatic() { 716 return getMaxRecentTasksStatic() / 6; 717 } 718 719 /** 720 * Return the maximum limit on the number of recents that an app can make. 721 * @hide 722 */ 723 static public int getMaxAppRecentsLimitStatic() { 724 return getMaxRecentTasksStatic() / 2; 725 } 726 727 /** 728 * Information you can set and retrieve about the current activity within the recent task list. 729 */ 730 public static class TaskDescription implements Parcelable { 731 /** @hide */ 732 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 733 private static final String ATTR_TASKDESCRIPTIONLABEL = 734 ATTR_TASKDESCRIPTION_PREFIX + "label"; 735 private static final String ATTR_TASKDESCRIPTIONCOLOR = 736 ATTR_TASKDESCRIPTION_PREFIX + "color"; 737 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 738 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 739 740 private String mLabel; 741 private Bitmap mIcon; 742 private String mIconFilename; 743 private int mColorPrimary; 744 745 /** 746 * Creates the TaskDescription to the specified values. 747 * 748 * @param label A label and description of the current state of this task. 749 * @param icon An icon that represents the current state of this task. 750 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 751 */ 752 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 753 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 754 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 755 } 756 757 mLabel = label; 758 mIcon = icon; 759 mColorPrimary = colorPrimary; 760 } 761 762 /** @hide */ 763 public TaskDescription(String label, int colorPrimary, String iconFilename) { 764 this(label, null, colorPrimary); 765 mIconFilename = iconFilename; 766 } 767 768 /** 769 * Creates the TaskDescription to the specified values. 770 * 771 * @param label A label and description of the current state of this activity. 772 * @param icon An icon that represents the current state of this activity. 773 */ 774 public TaskDescription(String label, Bitmap icon) { 775 this(label, icon, 0); 776 } 777 778 /** 779 * Creates the TaskDescription to the specified values. 780 * 781 * @param label A label and description of the current state of this activity. 782 */ 783 public TaskDescription(String label) { 784 this(label, null, 0); 785 } 786 787 /** 788 * Creates an empty TaskDescription. 789 */ 790 public TaskDescription() { 791 this(null, null, 0); 792 } 793 794 /** 795 * Creates a copy of another TaskDescription. 796 */ 797 public TaskDescription(TaskDescription td) { 798 mLabel = td.mLabel; 799 mIcon = td.mIcon; 800 mColorPrimary = td.mColorPrimary; 801 mIconFilename = td.mIconFilename; 802 } 803 804 private TaskDescription(Parcel source) { 805 readFromParcel(source); 806 } 807 808 /** 809 * Sets the label for this task description. 810 * @hide 811 */ 812 public void setLabel(String label) { 813 mLabel = label; 814 } 815 816 /** 817 * Sets the primary color for this task description. 818 * @hide 819 */ 820 public void setPrimaryColor(int primaryColor) { 821 // Ensure that the given color is valid 822 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 823 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 824 } 825 mColorPrimary = primaryColor; 826 } 827 828 /** 829 * Sets the icon for this task description. 830 * @hide 831 */ 832 public void setIcon(Bitmap icon) { 833 mIcon = icon; 834 } 835 836 /** 837 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 838 * bitmap. 839 * @hide 840 */ 841 public void setIconFilename(String iconFilename) { 842 mIconFilename = iconFilename; 843 mIcon = null; 844 } 845 846 /** 847 * @return The label and description of the current state of this task. 848 */ 849 public String getLabel() { 850 return mLabel; 851 } 852 853 /** 854 * @return The icon that represents the current state of this task. 855 */ 856 public Bitmap getIcon() { 857 if (mIcon != null) { 858 return mIcon; 859 } 860 return loadTaskDescriptionIcon(mIconFilename); 861 } 862 863 /** @hide */ 864 public String getIconFilename() { 865 return mIconFilename; 866 } 867 868 /** @hide */ 869 public Bitmap getInMemoryIcon() { 870 return mIcon; 871 } 872 873 /** @hide */ 874 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 875 if (iconFilename != null) { 876 try { 877 return ActivityManagerNative.getDefault(). 878 getTaskDescriptionIcon(iconFilename); 879 } catch (RemoteException e) { 880 } 881 } 882 return null; 883 } 884 885 /** 886 * @return The color override on the theme's primary color. 887 */ 888 public int getPrimaryColor() { 889 return mColorPrimary; 890 } 891 892 /** @hide */ 893 public void saveToXml(XmlSerializer out) throws IOException { 894 if (mLabel != null) { 895 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 896 } 897 if (mColorPrimary != 0) { 898 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 899 } 900 if (mIconFilename != null) { 901 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 902 } 903 } 904 905 /** @hide */ 906 public void restoreFromXml(String attrName, String attrValue) { 907 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 908 setLabel(attrValue); 909 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 910 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 911 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 912 setIconFilename(attrValue); 913 } 914 } 915 916 @Override 917 public int describeContents() { 918 return 0; 919 } 920 921 @Override 922 public void writeToParcel(Parcel dest, int flags) { 923 if (mLabel == null) { 924 dest.writeInt(0); 925 } else { 926 dest.writeInt(1); 927 dest.writeString(mLabel); 928 } 929 if (mIcon == null) { 930 dest.writeInt(0); 931 } else { 932 dest.writeInt(1); 933 mIcon.writeToParcel(dest, 0); 934 } 935 dest.writeInt(mColorPrimary); 936 if (mIconFilename == null) { 937 dest.writeInt(0); 938 } else { 939 dest.writeInt(1); 940 dest.writeString(mIconFilename); 941 } 942 } 943 944 public void readFromParcel(Parcel source) { 945 mLabel = source.readInt() > 0 ? source.readString() : null; 946 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 947 mColorPrimary = source.readInt(); 948 mIconFilename = source.readInt() > 0 ? source.readString() : null; 949 } 950 951 public static final Creator<TaskDescription> CREATOR 952 = new Creator<TaskDescription>() { 953 public TaskDescription createFromParcel(Parcel source) { 954 return new TaskDescription(source); 955 } 956 public TaskDescription[] newArray(int size) { 957 return new TaskDescription[size]; 958 } 959 }; 960 961 @Override 962 public String toString() { 963 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 964 " colorPrimary: " + mColorPrimary; 965 } 966 } 967 968 /** 969 * Information you can retrieve about tasks that the user has most recently 970 * started or visited. 971 */ 972 public static class RecentTaskInfo implements Parcelable { 973 /** 974 * If this task is currently running, this is the identifier for it. 975 * If it is not running, this will be -1. 976 */ 977 public int id; 978 979 /** 980 * The true identifier of this task, valid even if it is not running. 981 */ 982 public int persistentId; 983 984 /** 985 * The original Intent used to launch the task. You can use this 986 * Intent to re-launch the task (if it is no longer running) or bring 987 * the current task to the front. 988 */ 989 public Intent baseIntent; 990 991 /** 992 * If this task was started from an alias, this is the actual 993 * activity component that was initially started; the component of 994 * the baseIntent in this case is the name of the actual activity 995 * implementation that the alias referred to. Otherwise, this is null. 996 */ 997 public ComponentName origActivity; 998 999 /** 1000 * The actual activity component that started the task. 1001 * @hide 1002 */ 1003 @Nullable 1004 public ComponentName realActivity; 1005 1006 /** 1007 * Description of the task's last state. 1008 */ 1009 public CharSequence description; 1010 1011 /** 1012 * The id of the ActivityStack this Task was on most recently. 1013 * @hide 1014 */ 1015 public int stackId; 1016 1017 /** 1018 * The id of the user the task was running as. 1019 * @hide 1020 */ 1021 public int userId; 1022 1023 /** 1024 * The first time this task was active. 1025 * @hide 1026 */ 1027 public long firstActiveTime; 1028 1029 /** 1030 * The last time this task was active. 1031 * @hide 1032 */ 1033 public long lastActiveTime; 1034 1035 /** 1036 * The recent activity values for the highest activity in the stack to have set the values. 1037 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1038 */ 1039 public TaskDescription taskDescription; 1040 1041 /** 1042 * Task affiliation for grouping with other tasks. 1043 */ 1044 public int affiliatedTaskId; 1045 1046 /** 1047 * Task affiliation color of the source task with the affiliated task id. 1048 * 1049 * @hide 1050 */ 1051 public int affiliatedTaskColor; 1052 1053 /** 1054 * The component launched as the first activity in the task. 1055 * This can be considered the "application" of this task. 1056 */ 1057 public ComponentName baseActivity; 1058 1059 /** 1060 * The activity component at the top of the history stack of the task. 1061 * This is what the user is currently doing. 1062 */ 1063 public ComponentName topActivity; 1064 1065 /** 1066 * Number of activities in this task. 1067 */ 1068 public int numActivities; 1069 1070 /** 1071 * The bounds of the task. 1072 * @hide 1073 */ 1074 public Rect bounds; 1075 1076 public RecentTaskInfo() { 1077 } 1078 1079 @Override 1080 public int describeContents() { 1081 return 0; 1082 } 1083 1084 @Override 1085 public void writeToParcel(Parcel dest, int flags) { 1086 dest.writeInt(id); 1087 dest.writeInt(persistentId); 1088 if (baseIntent != null) { 1089 dest.writeInt(1); 1090 baseIntent.writeToParcel(dest, 0); 1091 } else { 1092 dest.writeInt(0); 1093 } 1094 ComponentName.writeToParcel(origActivity, dest); 1095 ComponentName.writeToParcel(realActivity, dest); 1096 TextUtils.writeToParcel(description, dest, 1097 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1098 if (taskDescription != null) { 1099 dest.writeInt(1); 1100 taskDescription.writeToParcel(dest, 0); 1101 } else { 1102 dest.writeInt(0); 1103 } 1104 dest.writeInt(stackId); 1105 dest.writeInt(userId); 1106 dest.writeLong(firstActiveTime); 1107 dest.writeLong(lastActiveTime); 1108 dest.writeInt(affiliatedTaskId); 1109 dest.writeInt(affiliatedTaskColor); 1110 ComponentName.writeToParcel(baseActivity, dest); 1111 ComponentName.writeToParcel(topActivity, dest); 1112 dest.writeInt(numActivities); 1113 if (bounds != null) { 1114 dest.writeInt(1); 1115 bounds.writeToParcel(dest, 0); 1116 } else { 1117 dest.writeInt(0); 1118 } 1119 } 1120 1121 public void readFromParcel(Parcel source) { 1122 id = source.readInt(); 1123 persistentId = source.readInt(); 1124 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1125 origActivity = ComponentName.readFromParcel(source); 1126 realActivity = ComponentName.readFromParcel(source); 1127 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1128 taskDescription = source.readInt() > 0 ? 1129 TaskDescription.CREATOR.createFromParcel(source) : null; 1130 stackId = source.readInt(); 1131 userId = source.readInt(); 1132 firstActiveTime = source.readLong(); 1133 lastActiveTime = source.readLong(); 1134 affiliatedTaskId = source.readInt(); 1135 affiliatedTaskColor = source.readInt(); 1136 baseActivity = ComponentName.readFromParcel(source); 1137 topActivity = ComponentName.readFromParcel(source); 1138 numActivities = source.readInt(); 1139 bounds = source.readInt() > 0 ? 1140 Rect.CREATOR.createFromParcel(source) : null; 1141 } 1142 1143 public static final Creator<RecentTaskInfo> CREATOR 1144 = new Creator<RecentTaskInfo>() { 1145 public RecentTaskInfo createFromParcel(Parcel source) { 1146 return new RecentTaskInfo(source); 1147 } 1148 public RecentTaskInfo[] newArray(int size) { 1149 return new RecentTaskInfo[size]; 1150 } 1151 }; 1152 1153 private RecentTaskInfo(Parcel source) { 1154 readFromParcel(source); 1155 } 1156 } 1157 1158 /** 1159 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1160 * that have set their 1161 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1162 */ 1163 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1164 1165 /** 1166 * Provides a list that does not contain any 1167 * recent tasks that currently are not available to the user. 1168 */ 1169 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1170 1171 /** 1172 * Provides a list that contains recent tasks for all 1173 * profiles of a user. 1174 * @hide 1175 */ 1176 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1177 1178 /** 1179 * Ignores all tasks that are on the home stack. 1180 * @hide 1181 */ 1182 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1183 1184 /** 1185 * <p></p>Return a list of the tasks that the user has recently launched, with 1186 * the most recent being first and older ones after in order. 1187 * 1188 * <p><b>Note: this method is only intended for debugging and presenting 1189 * task management user interfaces</b>. This should never be used for 1190 * core logic in an application, such as deciding between different 1191 * behaviors based on the information found here. Such uses are 1192 * <em>not</em> supported, and will likely break in the future. For 1193 * example, if multiple applications can be actively running at the 1194 * same time, assumptions made about the meaning of the data here for 1195 * purposes of control flow will be incorrect.</p> 1196 * 1197 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1198 * no longer available to third party applications: the introduction of 1199 * document-centric recents means 1200 * it can leak personal information to the caller. For backwards compatibility, 1201 * it will still return a small subset of its data: at least the caller's 1202 * own tasks (though see {@link #getAppTasks()} for the correct supported 1203 * way to retrieve that information), and possibly some other tasks 1204 * such as home that are known to not be sensitive. 1205 * 1206 * @param maxNum The maximum number of entries to return in the list. The 1207 * actual number returned may be smaller, depending on how many tasks the 1208 * user has started and the maximum number the system can remember. 1209 * @param flags Information about what to return. May be any combination 1210 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1211 * 1212 * @return Returns a list of RecentTaskInfo records describing each of 1213 * the recent tasks. 1214 */ 1215 @Deprecated 1216 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1217 throws SecurityException { 1218 try { 1219 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1220 flags, UserHandle.myUserId()); 1221 } catch (RemoteException e) { 1222 // System dead, we will be dead too soon! 1223 return null; 1224 } 1225 } 1226 1227 /** 1228 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1229 * specific user. It requires holding 1230 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1231 * @param maxNum The maximum number of entries to return in the list. The 1232 * actual number returned may be smaller, depending on how many tasks the 1233 * user has started and the maximum number the system can remember. 1234 * @param flags Information about what to return. May be any combination 1235 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1236 * 1237 * @return Returns a list of RecentTaskInfo records describing each of 1238 * the recent tasks. Most recently activated tasks go first. 1239 * 1240 * @hide 1241 */ 1242 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1243 throws SecurityException { 1244 try { 1245 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1246 flags, userId); 1247 } catch (RemoteException e) { 1248 // System dead, we will be dead too soon! 1249 return null; 1250 } 1251 } 1252 1253 /** 1254 * Information you can retrieve about a particular task that is currently 1255 * "running" in the system. Note that a running task does not mean the 1256 * given task actually has a process it is actively running in; it simply 1257 * means that the user has gone to it and never closed it, but currently 1258 * the system may have killed its process and is only holding on to its 1259 * last state in order to restart it when the user returns. 1260 */ 1261 public static class RunningTaskInfo implements Parcelable { 1262 /** 1263 * A unique identifier for this task. 1264 */ 1265 public int id; 1266 1267 /** 1268 * The stack that currently contains this task. 1269 * @hide 1270 */ 1271 public int stackId; 1272 1273 /** 1274 * The component launched as the first activity in the task. This can 1275 * be considered the "application" of this task. 1276 */ 1277 public ComponentName baseActivity; 1278 1279 /** 1280 * The activity component at the top of the history stack of the task. 1281 * This is what the user is currently doing. 1282 */ 1283 public ComponentName topActivity; 1284 1285 /** 1286 * Thumbnail representation of the task's current state. Currently 1287 * always null. 1288 */ 1289 public Bitmap thumbnail; 1290 1291 /** 1292 * Description of the task's current state. 1293 */ 1294 public CharSequence description; 1295 1296 /** 1297 * Number of activities in this task. 1298 */ 1299 public int numActivities; 1300 1301 /** 1302 * Number of activities that are currently running (not stopped 1303 * and persisted) in this task. 1304 */ 1305 public int numRunning; 1306 1307 /** 1308 * Last time task was run. For sorting. 1309 * @hide 1310 */ 1311 public long lastActiveTime; 1312 1313 public RunningTaskInfo() { 1314 } 1315 1316 public int describeContents() { 1317 return 0; 1318 } 1319 1320 public void writeToParcel(Parcel dest, int flags) { 1321 dest.writeInt(id); 1322 dest.writeInt(stackId); 1323 ComponentName.writeToParcel(baseActivity, dest); 1324 ComponentName.writeToParcel(topActivity, dest); 1325 if (thumbnail != null) { 1326 dest.writeInt(1); 1327 thumbnail.writeToParcel(dest, 0); 1328 } else { 1329 dest.writeInt(0); 1330 } 1331 TextUtils.writeToParcel(description, dest, 1332 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1333 dest.writeInt(numActivities); 1334 dest.writeInt(numRunning); 1335 } 1336 1337 public void readFromParcel(Parcel source) { 1338 id = source.readInt(); 1339 stackId = source.readInt(); 1340 baseActivity = ComponentName.readFromParcel(source); 1341 topActivity = ComponentName.readFromParcel(source); 1342 if (source.readInt() != 0) { 1343 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1344 } else { 1345 thumbnail = null; 1346 } 1347 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1348 numActivities = source.readInt(); 1349 numRunning = source.readInt(); 1350 } 1351 1352 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1353 public RunningTaskInfo createFromParcel(Parcel source) { 1354 return new RunningTaskInfo(source); 1355 } 1356 public RunningTaskInfo[] newArray(int size) { 1357 return new RunningTaskInfo[size]; 1358 } 1359 }; 1360 1361 private RunningTaskInfo(Parcel source) { 1362 readFromParcel(source); 1363 } 1364 } 1365 1366 /** 1367 * Get the list of tasks associated with the calling application. 1368 * 1369 * @return The list of tasks associated with the application making this call. 1370 * @throws SecurityException 1371 */ 1372 public List<ActivityManager.AppTask> getAppTasks() { 1373 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1374 List<IAppTask> appTasks; 1375 try { 1376 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1377 } catch (RemoteException e) { 1378 // System dead, we will be dead too soon! 1379 return null; 1380 } 1381 int numAppTasks = appTasks.size(); 1382 for (int i = 0; i < numAppTasks; i++) { 1383 tasks.add(new AppTask(appTasks.get(i))); 1384 } 1385 return tasks; 1386 } 1387 1388 /** 1389 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1390 * with {@link #addAppTask}. 1391 */ 1392 public Size getAppTaskThumbnailSize() { 1393 synchronized (this) { 1394 ensureAppTaskThumbnailSizeLocked(); 1395 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1396 } 1397 } 1398 1399 private void ensureAppTaskThumbnailSizeLocked() { 1400 if (mAppTaskThumbnailSize == null) { 1401 try { 1402 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1403 } catch (RemoteException e) { 1404 throw new IllegalStateException("System dead?", e); 1405 } 1406 } 1407 } 1408 1409 /** 1410 * Add a new {@link AppTask} for the calling application. This will create a new 1411 * recents entry that is added to the <b>end</b> of all existing recents. 1412 * 1413 * @param activity The activity that is adding the entry. This is used to help determine 1414 * the context that the new recents entry will be in. 1415 * @param intent The Intent that describes the recents entry. This is the same Intent that 1416 * you would have used to launch the activity for it. In generally you will want to set 1417 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1418 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1419 * entry will exist without an activity, so it doesn't make sense to not retain it when 1420 * its activity disappears. The given Intent here also must have an explicit ComponentName 1421 * set on it. 1422 * @param description Optional additional description information. 1423 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1424 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1425 * recreated in your process, probably in a way you don't like, before the recents entry 1426 * is added. 1427 * 1428 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1429 * most likely cause of failure is that there is no more room for more tasks for your app. 1430 */ 1431 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1432 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1433 Point size; 1434 synchronized (this) { 1435 ensureAppTaskThumbnailSizeLocked(); 1436 size = mAppTaskThumbnailSize; 1437 } 1438 final int tw = thumbnail.getWidth(); 1439 final int th = thumbnail.getHeight(); 1440 if (tw != size.x || th != size.y) { 1441 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1442 1443 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1444 float scale; 1445 float dx = 0, dy = 0; 1446 if (tw * size.x > size.y * th) { 1447 scale = (float) size.x / (float) th; 1448 dx = (size.y - tw * scale) * 0.5f; 1449 } else { 1450 scale = (float) size.y / (float) tw; 1451 dy = (size.x - th * scale) * 0.5f; 1452 } 1453 Matrix matrix = new Matrix(); 1454 matrix.setScale(scale, scale); 1455 matrix.postTranslate((int) (dx + 0.5f), 0); 1456 1457 Canvas canvas = new Canvas(bm); 1458 canvas.drawBitmap(thumbnail, matrix, null); 1459 canvas.setBitmap(null); 1460 1461 thumbnail = bm; 1462 } 1463 if (description == null) { 1464 description = new TaskDescription(); 1465 } 1466 try { 1467 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1468 intent, description, thumbnail); 1469 } catch (RemoteException e) { 1470 throw new IllegalStateException("System dead?", e); 1471 } 1472 } 1473 1474 /** 1475 * Return a list of the tasks that are currently running, with 1476 * the most recent being first and older ones after in order. Note that 1477 * "running" does not mean any of the task's code is currently loaded or 1478 * activity -- the task may have been frozen by the system, so that it 1479 * can be restarted in its previous state when next brought to the 1480 * foreground. 1481 * 1482 * <p><b>Note: this method is only intended for debugging and presenting 1483 * task management user interfaces</b>. This should never be used for 1484 * core logic in an application, such as deciding between different 1485 * behaviors based on the information found here. Such uses are 1486 * <em>not</em> supported, and will likely break in the future. For 1487 * example, if multiple applications can be actively running at the 1488 * same time, assumptions made about the meaning of the data here for 1489 * purposes of control flow will be incorrect.</p> 1490 * 1491 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1492 * is no longer available to third party 1493 * applications: the introduction of document-centric recents means 1494 * it can leak person information to the caller. For backwards compatibility, 1495 * it will still retu rn a small subset of its data: at least the caller's 1496 * own tasks, and possibly some other tasks 1497 * such as home that are known to not be sensitive. 1498 * 1499 * @param maxNum The maximum number of entries to return in the list. The 1500 * actual number returned may be smaller, depending on how many tasks the 1501 * user has started. 1502 * 1503 * @return Returns a list of RunningTaskInfo records describing each of 1504 * the running tasks. 1505 */ 1506 @Deprecated 1507 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1508 throws SecurityException { 1509 try { 1510 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1511 } catch (RemoteException e) { 1512 // System dead, we will be dead too soon! 1513 return null; 1514 } 1515 } 1516 1517 /** 1518 * Completely remove the given task. 1519 * 1520 * @param taskId Identifier of the task to be removed. 1521 * @return Returns true if the given task was found and removed. 1522 * 1523 * @hide 1524 */ 1525 public boolean removeTask(int taskId) throws SecurityException { 1526 try { 1527 return ActivityManagerNative.getDefault().removeTask(taskId); 1528 } catch (RemoteException e) { 1529 // System dead, we will be dead too soon! 1530 return false; 1531 } 1532 } 1533 1534 /** 1535 * Metadata related to the {@link TaskThumbnail}. 1536 * 1537 * @hide 1538 */ 1539 public static class TaskThumbnailInfo implements Parcelable { 1540 /** @hide */ 1541 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1542 private static final String ATTR_TASK_WIDTH = 1543 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1544 private static final String ATTR_TASK_HEIGHT = 1545 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1546 private static final String ATTR_SCREEN_ORIENTATION = 1547 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1548 1549 public int taskWidth; 1550 public int taskHeight; 1551 public int screenOrientation; 1552 1553 public TaskThumbnailInfo() { 1554 // Do nothing 1555 } 1556 1557 private TaskThumbnailInfo(Parcel source) { 1558 readFromParcel(source); 1559 } 1560 1561 /** 1562 * Resets this info state to the initial state. 1563 * @hide 1564 */ 1565 public void reset() { 1566 taskWidth = 0; 1567 taskHeight = 0; 1568 screenOrientation = 0; 1569 } 1570 1571 /** @hide */ 1572 public void saveToXml(XmlSerializer out) throws IOException { 1573 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1574 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1575 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1576 } 1577 1578 /** @hide */ 1579 public void restoreFromXml(String attrName, String attrValue) { 1580 if (ATTR_TASK_WIDTH.equals(attrName)) { 1581 taskWidth = Integer.parseInt(attrValue); 1582 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1583 taskHeight = Integer.parseInt(attrValue); 1584 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1585 screenOrientation = Integer.parseInt(attrValue); 1586 } 1587 } 1588 1589 public int describeContents() { 1590 return 0; 1591 } 1592 1593 public void writeToParcel(Parcel dest, int flags) { 1594 dest.writeInt(taskWidth); 1595 dest.writeInt(taskHeight); 1596 dest.writeInt(screenOrientation); 1597 } 1598 1599 public void readFromParcel(Parcel source) { 1600 taskWidth = source.readInt(); 1601 taskHeight = source.readInt(); 1602 screenOrientation = source.readInt(); 1603 } 1604 1605 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1606 public TaskThumbnailInfo createFromParcel(Parcel source) { 1607 return new TaskThumbnailInfo(source); 1608 } 1609 public TaskThumbnailInfo[] newArray(int size) { 1610 return new TaskThumbnailInfo[size]; 1611 } 1612 }; 1613 } 1614 1615 /** @hide */ 1616 public static class TaskThumbnail implements Parcelable { 1617 public Bitmap mainThumbnail; 1618 public ParcelFileDescriptor thumbnailFileDescriptor; 1619 public TaskThumbnailInfo thumbnailInfo; 1620 1621 public TaskThumbnail() { 1622 } 1623 1624 private TaskThumbnail(Parcel source) { 1625 readFromParcel(source); 1626 } 1627 1628 public int describeContents() { 1629 if (thumbnailFileDescriptor != null) { 1630 return thumbnailFileDescriptor.describeContents(); 1631 } 1632 return 0; 1633 } 1634 1635 public void writeToParcel(Parcel dest, int flags) { 1636 if (mainThumbnail != null) { 1637 dest.writeInt(1); 1638 mainThumbnail.writeToParcel(dest, flags); 1639 } else { 1640 dest.writeInt(0); 1641 } 1642 if (thumbnailFileDescriptor != null) { 1643 dest.writeInt(1); 1644 thumbnailFileDescriptor.writeToParcel(dest, flags); 1645 } else { 1646 dest.writeInt(0); 1647 } 1648 if (thumbnailInfo != null) { 1649 dest.writeInt(1); 1650 thumbnailInfo.writeToParcel(dest, flags); 1651 } else { 1652 dest.writeInt(0); 1653 } 1654 } 1655 1656 public void readFromParcel(Parcel source) { 1657 if (source.readInt() != 0) { 1658 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1659 } else { 1660 mainThumbnail = null; 1661 } 1662 if (source.readInt() != 0) { 1663 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1664 } else { 1665 thumbnailFileDescriptor = null; 1666 } 1667 if (source.readInt() != 0) { 1668 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1669 } else { 1670 thumbnailInfo = null; 1671 } 1672 } 1673 1674 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1675 public TaskThumbnail createFromParcel(Parcel source) { 1676 return new TaskThumbnail(source); 1677 } 1678 public TaskThumbnail[] newArray(int size) { 1679 return new TaskThumbnail[size]; 1680 } 1681 }; 1682 } 1683 1684 /** @hide */ 1685 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1686 try { 1687 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1688 } catch (RemoteException e) { 1689 // System dead, we will be dead too soon! 1690 return null; 1691 } 1692 } 1693 1694 /** @hide */ 1695 public boolean isInHomeStack(int taskId) { 1696 try { 1697 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1698 } catch (RemoteException e) { 1699 // System dead, we will be dead too soon! 1700 return false; 1701 } 1702 } 1703 1704 /** 1705 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1706 * activity along with the task, so it is positioned immediately behind 1707 * the task. 1708 */ 1709 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1710 1711 /** 1712 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1713 * user-instigated action, so the current activity will not receive a 1714 * hint that the user is leaving. 1715 */ 1716 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1717 1718 /** 1719 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1720 * with a null options argument. 1721 * 1722 * @param taskId The identifier of the task to be moved, as found in 1723 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1724 * @param flags Additional operational flags, 0 or more of 1725 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1726 */ 1727 public void moveTaskToFront(int taskId, int flags) { 1728 moveTaskToFront(taskId, flags, null); 1729 } 1730 1731 /** 1732 * Ask that the task associated with a given task ID be moved to the 1733 * front of the stack, so it is now visible to the user. Requires that 1734 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1735 * or a SecurityException will be thrown. 1736 * 1737 * @param taskId The identifier of the task to be moved, as found in 1738 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1739 * @param flags Additional operational flags, 0 or more of 1740 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1741 * @param options Additional options for the operation, either null or 1742 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1743 * Context.startActivity(Intent, Bundle)}. 1744 */ 1745 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1746 try { 1747 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1748 } catch (RemoteException e) { 1749 // System dead, we will be dead too soon! 1750 } 1751 } 1752 1753 /** 1754 * Information you can retrieve about a particular Service that is 1755 * currently running in the system. 1756 */ 1757 public static class RunningServiceInfo implements Parcelable { 1758 /** 1759 * The service component. 1760 */ 1761 public ComponentName service; 1762 1763 /** 1764 * If non-zero, this is the process the service is running in. 1765 */ 1766 public int pid; 1767 1768 /** 1769 * The UID that owns this service. 1770 */ 1771 public int uid; 1772 1773 /** 1774 * The name of the process this service runs in. 1775 */ 1776 public String process; 1777 1778 /** 1779 * Set to true if the service has asked to run as a foreground process. 1780 */ 1781 public boolean foreground; 1782 1783 /** 1784 * The time when the service was first made active, either by someone 1785 * starting or binding to it. This 1786 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1787 */ 1788 public long activeSince; 1789 1790 /** 1791 * Set to true if this service has been explicitly started. 1792 */ 1793 public boolean started; 1794 1795 /** 1796 * Number of clients connected to the service. 1797 */ 1798 public int clientCount; 1799 1800 /** 1801 * Number of times the service's process has crashed while the service 1802 * is running. 1803 */ 1804 public int crashCount; 1805 1806 /** 1807 * The time when there was last activity in the service (either 1808 * explicit requests to start it or clients binding to it). This 1809 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1810 */ 1811 public long lastActivityTime; 1812 1813 /** 1814 * If non-zero, this service is not currently running, but scheduled to 1815 * restart at the given time. 1816 */ 1817 public long restarting; 1818 1819 /** 1820 * Bit for {@link #flags}: set if this service has been 1821 * explicitly started. 1822 */ 1823 public static final int FLAG_STARTED = 1<<0; 1824 1825 /** 1826 * Bit for {@link #flags}: set if the service has asked to 1827 * run as a foreground process. 1828 */ 1829 public static final int FLAG_FOREGROUND = 1<<1; 1830 1831 /** 1832 * Bit for {@link #flags): set if the service is running in a 1833 * core system process. 1834 */ 1835 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1836 1837 /** 1838 * Bit for {@link #flags): set if the service is running in a 1839 * persistent process. 1840 */ 1841 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1842 1843 /** 1844 * Running flags. 1845 */ 1846 public int flags; 1847 1848 /** 1849 * For special services that are bound to by system code, this is 1850 * the package that holds the binding. 1851 */ 1852 public String clientPackage; 1853 1854 /** 1855 * For special services that are bound to by system code, this is 1856 * a string resource providing a user-visible label for who the 1857 * client is. 1858 */ 1859 public int clientLabel; 1860 1861 public RunningServiceInfo() { 1862 } 1863 1864 public int describeContents() { 1865 return 0; 1866 } 1867 1868 public void writeToParcel(Parcel dest, int flags) { 1869 ComponentName.writeToParcel(service, dest); 1870 dest.writeInt(pid); 1871 dest.writeInt(uid); 1872 dest.writeString(process); 1873 dest.writeInt(foreground ? 1 : 0); 1874 dest.writeLong(activeSince); 1875 dest.writeInt(started ? 1 : 0); 1876 dest.writeInt(clientCount); 1877 dest.writeInt(crashCount); 1878 dest.writeLong(lastActivityTime); 1879 dest.writeLong(restarting); 1880 dest.writeInt(this.flags); 1881 dest.writeString(clientPackage); 1882 dest.writeInt(clientLabel); 1883 } 1884 1885 public void readFromParcel(Parcel source) { 1886 service = ComponentName.readFromParcel(source); 1887 pid = source.readInt(); 1888 uid = source.readInt(); 1889 process = source.readString(); 1890 foreground = source.readInt() != 0; 1891 activeSince = source.readLong(); 1892 started = source.readInt() != 0; 1893 clientCount = source.readInt(); 1894 crashCount = source.readInt(); 1895 lastActivityTime = source.readLong(); 1896 restarting = source.readLong(); 1897 flags = source.readInt(); 1898 clientPackage = source.readString(); 1899 clientLabel = source.readInt(); 1900 } 1901 1902 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1903 public RunningServiceInfo createFromParcel(Parcel source) { 1904 return new RunningServiceInfo(source); 1905 } 1906 public RunningServiceInfo[] newArray(int size) { 1907 return new RunningServiceInfo[size]; 1908 } 1909 }; 1910 1911 private RunningServiceInfo(Parcel source) { 1912 readFromParcel(source); 1913 } 1914 } 1915 1916 /** 1917 * Return a list of the services that are currently running. 1918 * 1919 * <p><b>Note: this method is only intended for debugging or implementing 1920 * service management type user interfaces.</b></p> 1921 * 1922 * @param maxNum The maximum number of entries to return in the list. The 1923 * actual number returned may be smaller, depending on how many services 1924 * are running. 1925 * 1926 * @return Returns a list of RunningServiceInfo records describing each of 1927 * the running tasks. 1928 */ 1929 public List<RunningServiceInfo> getRunningServices(int maxNum) 1930 throws SecurityException { 1931 try { 1932 return ActivityManagerNative.getDefault() 1933 .getServices(maxNum, 0); 1934 } catch (RemoteException e) { 1935 // System dead, we will be dead too soon! 1936 return null; 1937 } 1938 } 1939 1940 /** 1941 * Returns a PendingIntent you can start to show a control panel for the 1942 * given running service. If the service does not have a control panel, 1943 * null is returned. 1944 */ 1945 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1946 throws SecurityException { 1947 try { 1948 return ActivityManagerNative.getDefault() 1949 .getRunningServiceControlPanel(service); 1950 } catch (RemoteException e) { 1951 // System dead, we will be dead too soon! 1952 return null; 1953 } 1954 } 1955 1956 /** 1957 * Information you can retrieve about the available memory through 1958 * {@link ActivityManager#getMemoryInfo}. 1959 */ 1960 public static class MemoryInfo implements Parcelable { 1961 /** 1962 * The available memory on the system. This number should not 1963 * be considered absolute: due to the nature of the kernel, a significant 1964 * portion of this memory is actually in use and needed for the overall 1965 * system to run well. 1966 */ 1967 public long availMem; 1968 1969 /** 1970 * The total memory accessible by the kernel. This is basically the 1971 * RAM size of the device, not including below-kernel fixed allocations 1972 * like DMA buffers, RAM for the baseband CPU, etc. 1973 */ 1974 public long totalMem; 1975 1976 /** 1977 * The threshold of {@link #availMem} at which we consider memory to be 1978 * low and start killing background services and other non-extraneous 1979 * processes. 1980 */ 1981 public long threshold; 1982 1983 /** 1984 * Set to true if the system considers itself to currently be in a low 1985 * memory situation. 1986 */ 1987 public boolean lowMemory; 1988 1989 /** @hide */ 1990 public long hiddenAppThreshold; 1991 /** @hide */ 1992 public long secondaryServerThreshold; 1993 /** @hide */ 1994 public long visibleAppThreshold; 1995 /** @hide */ 1996 public long foregroundAppThreshold; 1997 1998 public MemoryInfo() { 1999 } 2000 2001 public int describeContents() { 2002 return 0; 2003 } 2004 2005 public void writeToParcel(Parcel dest, int flags) { 2006 dest.writeLong(availMem); 2007 dest.writeLong(totalMem); 2008 dest.writeLong(threshold); 2009 dest.writeInt(lowMemory ? 1 : 0); 2010 dest.writeLong(hiddenAppThreshold); 2011 dest.writeLong(secondaryServerThreshold); 2012 dest.writeLong(visibleAppThreshold); 2013 dest.writeLong(foregroundAppThreshold); 2014 } 2015 2016 public void readFromParcel(Parcel source) { 2017 availMem = source.readLong(); 2018 totalMem = source.readLong(); 2019 threshold = source.readLong(); 2020 lowMemory = source.readInt() != 0; 2021 hiddenAppThreshold = source.readLong(); 2022 secondaryServerThreshold = source.readLong(); 2023 visibleAppThreshold = source.readLong(); 2024 foregroundAppThreshold = source.readLong(); 2025 } 2026 2027 public static final Creator<MemoryInfo> CREATOR 2028 = new Creator<MemoryInfo>() { 2029 public MemoryInfo createFromParcel(Parcel source) { 2030 return new MemoryInfo(source); 2031 } 2032 public MemoryInfo[] newArray(int size) { 2033 return new MemoryInfo[size]; 2034 } 2035 }; 2036 2037 private MemoryInfo(Parcel source) { 2038 readFromParcel(source); 2039 } 2040 } 2041 2042 /** 2043 * Return general information about the memory state of the system. This 2044 * can be used to help decide how to manage your own memory, though note 2045 * that polling is not recommended and 2046 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2047 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2048 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2049 * level of your process as needed, which gives a better hint for how to 2050 * manage its memory. 2051 */ 2052 public void getMemoryInfo(MemoryInfo outInfo) { 2053 try { 2054 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2055 } catch (RemoteException e) { 2056 } 2057 } 2058 2059 /** 2060 * Information you can retrieve about an ActivityStack in the system. 2061 * @hide 2062 */ 2063 public static class StackInfo implements Parcelable { 2064 public int stackId; 2065 public Rect bounds = new Rect(); 2066 public int[] taskIds; 2067 public String[] taskNames; 2068 public Rect[] taskBounds; 2069 public int displayId; 2070 2071 @Override 2072 public int describeContents() { 2073 return 0; 2074 } 2075 2076 @Override 2077 public void writeToParcel(Parcel dest, int flags) { 2078 dest.writeInt(stackId); 2079 dest.writeInt(bounds.left); 2080 dest.writeInt(bounds.top); 2081 dest.writeInt(bounds.right); 2082 dest.writeInt(bounds.bottom); 2083 dest.writeIntArray(taskIds); 2084 dest.writeStringArray(taskNames); 2085 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2086 dest.writeInt(boundsCount); 2087 for (int i = 0; i < boundsCount; i++) { 2088 dest.writeInt(taskBounds[i].left); 2089 dest.writeInt(taskBounds[i].top); 2090 dest.writeInt(taskBounds[i].right); 2091 dest.writeInt(taskBounds[i].bottom); 2092 } 2093 dest.writeInt(displayId); 2094 } 2095 2096 public void readFromParcel(Parcel source) { 2097 stackId = source.readInt(); 2098 bounds = new Rect( 2099 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2100 taskIds = source.createIntArray(); 2101 taskNames = source.createStringArray(); 2102 final int boundsCount = source.readInt(); 2103 if (boundsCount > 0) { 2104 taskBounds = new Rect[boundsCount]; 2105 for (int i = 0; i < boundsCount; i++) { 2106 taskBounds[i] = new Rect(); 2107 taskBounds[i].set( 2108 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2109 } 2110 } else { 2111 taskBounds = null; 2112 } 2113 displayId = source.readInt(); 2114 } 2115 2116 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2117 @Override 2118 public StackInfo createFromParcel(Parcel source) { 2119 return new StackInfo(source); 2120 } 2121 @Override 2122 public StackInfo[] newArray(int size) { 2123 return new StackInfo[size]; 2124 } 2125 }; 2126 2127 public StackInfo() { 2128 } 2129 2130 private StackInfo(Parcel source) { 2131 readFromParcel(source); 2132 } 2133 2134 public String toString(String prefix) { 2135 StringBuilder sb = new StringBuilder(256); 2136 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2137 sb.append(" bounds="); sb.append(bounds.toShortString()); 2138 sb.append(" displayId="); sb.append(displayId); 2139 sb.append("\n"); 2140 prefix = prefix + " "; 2141 for (int i = 0; i < taskIds.length; ++i) { 2142 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2143 sb.append(": "); sb.append(taskNames[i]); 2144 if (taskBounds != null) { 2145 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2146 } 2147 sb.append("\n"); 2148 } 2149 return sb.toString(); 2150 } 2151 2152 @Override 2153 public String toString() { 2154 return toString(""); 2155 } 2156 } 2157 2158 /** 2159 * @hide 2160 */ 2161 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2162 try { 2163 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2164 observer, UserHandle.myUserId()); 2165 } catch (RemoteException e) { 2166 return false; 2167 } 2168 } 2169 2170 /** 2171 * Permits an application to erase its own data from disk. This is equivalent to 2172 * the user choosing to clear the app's data from within the device settings UI. It 2173 * erases all dynamic data associated with the app -- its private data and data in its 2174 * private area on external storage -- but does not remove the installed application 2175 * itself, nor any OBB files. 2176 * 2177 * @return {@code true} if the application successfully requested that the application's 2178 * data be erased; {@code false} otherwise. 2179 */ 2180 public boolean clearApplicationUserData() { 2181 return clearApplicationUserData(mContext.getPackageName(), null); 2182 } 2183 2184 /** 2185 * Information you can retrieve about any processes that are in an error condition. 2186 */ 2187 public static class ProcessErrorStateInfo implements Parcelable { 2188 /** 2189 * Condition codes 2190 */ 2191 public static final int NO_ERROR = 0; 2192 public static final int CRASHED = 1; 2193 public static final int NOT_RESPONDING = 2; 2194 2195 /** 2196 * The condition that the process is in. 2197 */ 2198 public int condition; 2199 2200 /** 2201 * The process name in which the crash or error occurred. 2202 */ 2203 public String processName; 2204 2205 /** 2206 * The pid of this process; 0 if none 2207 */ 2208 public int pid; 2209 2210 /** 2211 * The kernel user-ID that has been assigned to this process; 2212 * currently this is not a unique ID (multiple applications can have 2213 * the same uid). 2214 */ 2215 public int uid; 2216 2217 /** 2218 * The activity name associated with the error, if known. May be null. 2219 */ 2220 public String tag; 2221 2222 /** 2223 * A short message describing the error condition. 2224 */ 2225 public String shortMsg; 2226 2227 /** 2228 * A long message describing the error condition. 2229 */ 2230 public String longMsg; 2231 2232 /** 2233 * The stack trace where the error originated. May be null. 2234 */ 2235 public String stackTrace; 2236 2237 /** 2238 * to be deprecated: This value will always be null. 2239 */ 2240 public byte[] crashData = null; 2241 2242 public ProcessErrorStateInfo() { 2243 } 2244 2245 @Override 2246 public int describeContents() { 2247 return 0; 2248 } 2249 2250 @Override 2251 public void writeToParcel(Parcel dest, int flags) { 2252 dest.writeInt(condition); 2253 dest.writeString(processName); 2254 dest.writeInt(pid); 2255 dest.writeInt(uid); 2256 dest.writeString(tag); 2257 dest.writeString(shortMsg); 2258 dest.writeString(longMsg); 2259 dest.writeString(stackTrace); 2260 } 2261 2262 public void readFromParcel(Parcel source) { 2263 condition = source.readInt(); 2264 processName = source.readString(); 2265 pid = source.readInt(); 2266 uid = source.readInt(); 2267 tag = source.readString(); 2268 shortMsg = source.readString(); 2269 longMsg = source.readString(); 2270 stackTrace = source.readString(); 2271 } 2272 2273 public static final Creator<ProcessErrorStateInfo> CREATOR = 2274 new Creator<ProcessErrorStateInfo>() { 2275 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2276 return new ProcessErrorStateInfo(source); 2277 } 2278 public ProcessErrorStateInfo[] newArray(int size) { 2279 return new ProcessErrorStateInfo[size]; 2280 } 2281 }; 2282 2283 private ProcessErrorStateInfo(Parcel source) { 2284 readFromParcel(source); 2285 } 2286 } 2287 2288 /** 2289 * Returns a list of any processes that are currently in an error condition. The result 2290 * will be null if all processes are running properly at this time. 2291 * 2292 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2293 * current error conditions (it will not return an empty list). This list ordering is not 2294 * specified. 2295 */ 2296 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2297 try { 2298 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2299 } catch (RemoteException e) { 2300 return null; 2301 } 2302 } 2303 2304 /** 2305 * Information you can retrieve about a running process. 2306 */ 2307 public static class RunningAppProcessInfo implements Parcelable { 2308 /** 2309 * The name of the process that this object is associated with 2310 */ 2311 public String processName; 2312 2313 /** 2314 * The pid of this process; 0 if none 2315 */ 2316 public int pid; 2317 2318 /** 2319 * The user id of this process. 2320 */ 2321 public int uid; 2322 2323 /** 2324 * All packages that have been loaded into the process. 2325 */ 2326 public String pkgList[]; 2327 2328 /** 2329 * Constant for {@link #flags}: this is an app that is unable to 2330 * correctly save its state when going to the background, 2331 * so it can not be killed while in the background. 2332 * @hide 2333 */ 2334 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2335 2336 /** 2337 * Constant for {@link #flags}: this process is associated with a 2338 * persistent system app. 2339 * @hide 2340 */ 2341 public static final int FLAG_PERSISTENT = 1<<1; 2342 2343 /** 2344 * Constant for {@link #flags}: this process is associated with a 2345 * persistent system app. 2346 * @hide 2347 */ 2348 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2349 2350 /** 2351 * Flags of information. May be any of 2352 * {@link #FLAG_CANT_SAVE_STATE}. 2353 * @hide 2354 */ 2355 public int flags; 2356 2357 /** 2358 * Last memory trim level reported to the process: corresponds to 2359 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2360 * ComponentCallbacks2.onTrimMemory(int)}. 2361 */ 2362 public int lastTrimLevel; 2363 2364 /** 2365 * Constant for {@link #importance}: This process is running the 2366 * foreground UI; that is, it is the thing currently at the top of the screen 2367 * that the user is interacting with. 2368 */ 2369 public static final int IMPORTANCE_FOREGROUND = 100; 2370 2371 /** 2372 * Constant for {@link #importance}: This process is running a foreground 2373 * service, for example to perform music playback even while the user is 2374 * not immediately in the app. This generally indicates that the process 2375 * is doing something the user actively cares about. 2376 */ 2377 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2378 2379 /** 2380 * Constant for {@link #importance}: This process is running the foreground 2381 * UI, but the device is asleep so it is not visible to the user. This means 2382 * the user is not really aware of the process, because they can not see or 2383 * interact with it, but it is quite important because it what they expect to 2384 * return to once unlocking the device. 2385 */ 2386 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2387 2388 /** 2389 * Constant for {@link #importance}: This process is running something 2390 * that is actively visible to the user, though not in the immediate 2391 * foreground. This may be running a window that is behind the current 2392 * foreground (so paused and with its state saved, not interacting with 2393 * the user, but visible to them to some degree); it may also be running 2394 * other services under the system's control that it inconsiders important. 2395 */ 2396 public static final int IMPORTANCE_VISIBLE = 200; 2397 2398 /** 2399 * Constant for {@link #importance}: This process is not something the user 2400 * is directly aware of, but is otherwise perceptable to them to some degree. 2401 */ 2402 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2403 2404 /** 2405 * Constant for {@link #importance}: This process is running an 2406 * application that can not save its state, and thus can't be killed 2407 * while in the background. 2408 * @hide 2409 */ 2410 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2411 2412 /** 2413 * Constant for {@link #importance}: This process is contains services 2414 * that should remain running. These are background services apps have 2415 * started, not something the user is aware of, so they may be killed by 2416 * the system relatively freely (though it is generally desired that they 2417 * stay running as long as they want to). 2418 */ 2419 public static final int IMPORTANCE_SERVICE = 300; 2420 2421 /** 2422 * Constant for {@link #importance}: This process process contains 2423 * background code that is expendable. 2424 */ 2425 public static final int IMPORTANCE_BACKGROUND = 400; 2426 2427 /** 2428 * Constant for {@link #importance}: This process is empty of any 2429 * actively running code. 2430 */ 2431 public static final int IMPORTANCE_EMPTY = 500; 2432 2433 /** 2434 * Constant for {@link #importance}: This process does not exist. 2435 */ 2436 public static final int IMPORTANCE_GONE = 1000; 2437 2438 /** @hide */ 2439 public static int procStateToImportance(int procState) { 2440 if (procState == PROCESS_STATE_NONEXISTENT) { 2441 return IMPORTANCE_GONE; 2442 } else if (procState >= PROCESS_STATE_HOME) { 2443 return IMPORTANCE_BACKGROUND; 2444 } else if (procState >= PROCESS_STATE_SERVICE) { 2445 return IMPORTANCE_SERVICE; 2446 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2447 return IMPORTANCE_CANT_SAVE_STATE; 2448 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2449 return IMPORTANCE_PERCEPTIBLE; 2450 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2451 return IMPORTANCE_VISIBLE; 2452 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2453 return IMPORTANCE_TOP_SLEEPING; 2454 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2455 return IMPORTANCE_FOREGROUND_SERVICE; 2456 } else { 2457 return IMPORTANCE_FOREGROUND; 2458 } 2459 } 2460 2461 /** 2462 * The relative importance level that the system places on this 2463 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2464 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2465 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2466 * constants are numbered so that "more important" values are always 2467 * smaller than "less important" values. 2468 */ 2469 public int importance; 2470 2471 /** 2472 * An additional ordering within a particular {@link #importance} 2473 * category, providing finer-grained information about the relative 2474 * utility of processes within a category. This number means nothing 2475 * except that a smaller values are more recently used (and thus 2476 * more important). Currently an LRU value is only maintained for 2477 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2478 * be maintained in the future. 2479 */ 2480 public int lru; 2481 2482 /** 2483 * Constant for {@link #importanceReasonCode}: nothing special has 2484 * been specified for the reason for this level. 2485 */ 2486 public static final int REASON_UNKNOWN = 0; 2487 2488 /** 2489 * Constant for {@link #importanceReasonCode}: one of the application's 2490 * content providers is being used by another process. The pid of 2491 * the client process is in {@link #importanceReasonPid} and the 2492 * target provider in this process is in 2493 * {@link #importanceReasonComponent}. 2494 */ 2495 public static final int REASON_PROVIDER_IN_USE = 1; 2496 2497 /** 2498 * Constant for {@link #importanceReasonCode}: one of the application's 2499 * content providers is being used by another process. The pid of 2500 * the client process is in {@link #importanceReasonPid} and the 2501 * target provider in this process is in 2502 * {@link #importanceReasonComponent}. 2503 */ 2504 public static final int REASON_SERVICE_IN_USE = 2; 2505 2506 /** 2507 * The reason for {@link #importance}, if any. 2508 */ 2509 public int importanceReasonCode; 2510 2511 /** 2512 * For the specified values of {@link #importanceReasonCode}, this 2513 * is the process ID of the other process that is a client of this 2514 * process. This will be 0 if no other process is using this one. 2515 */ 2516 public int importanceReasonPid; 2517 2518 /** 2519 * For the specified values of {@link #importanceReasonCode}, this 2520 * is the name of the component that is being used in this process. 2521 */ 2522 public ComponentName importanceReasonComponent; 2523 2524 /** 2525 * When {@link #importanceReasonPid} is non-0, this is the importance 2526 * of the other pid. @hide 2527 */ 2528 public int importanceReasonImportance; 2529 2530 /** 2531 * Current process state, as per PROCESS_STATE_* constants. 2532 * @hide 2533 */ 2534 public int processState; 2535 2536 public RunningAppProcessInfo() { 2537 importance = IMPORTANCE_FOREGROUND; 2538 importanceReasonCode = REASON_UNKNOWN; 2539 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2540 } 2541 2542 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2543 processName = pProcessName; 2544 pid = pPid; 2545 pkgList = pArr; 2546 } 2547 2548 public int describeContents() { 2549 return 0; 2550 } 2551 2552 public void writeToParcel(Parcel dest, int flags) { 2553 dest.writeString(processName); 2554 dest.writeInt(pid); 2555 dest.writeInt(uid); 2556 dest.writeStringArray(pkgList); 2557 dest.writeInt(this.flags); 2558 dest.writeInt(lastTrimLevel); 2559 dest.writeInt(importance); 2560 dest.writeInt(lru); 2561 dest.writeInt(importanceReasonCode); 2562 dest.writeInt(importanceReasonPid); 2563 ComponentName.writeToParcel(importanceReasonComponent, dest); 2564 dest.writeInt(importanceReasonImportance); 2565 dest.writeInt(processState); 2566 } 2567 2568 public void readFromParcel(Parcel source) { 2569 processName = source.readString(); 2570 pid = source.readInt(); 2571 uid = source.readInt(); 2572 pkgList = source.readStringArray(); 2573 flags = source.readInt(); 2574 lastTrimLevel = source.readInt(); 2575 importance = source.readInt(); 2576 lru = source.readInt(); 2577 importanceReasonCode = source.readInt(); 2578 importanceReasonPid = source.readInt(); 2579 importanceReasonComponent = ComponentName.readFromParcel(source); 2580 importanceReasonImportance = source.readInt(); 2581 processState = source.readInt(); 2582 } 2583 2584 public static final Creator<RunningAppProcessInfo> CREATOR = 2585 new Creator<RunningAppProcessInfo>() { 2586 public RunningAppProcessInfo createFromParcel(Parcel source) { 2587 return new RunningAppProcessInfo(source); 2588 } 2589 public RunningAppProcessInfo[] newArray(int size) { 2590 return new RunningAppProcessInfo[size]; 2591 } 2592 }; 2593 2594 private RunningAppProcessInfo(Parcel source) { 2595 readFromParcel(source); 2596 } 2597 } 2598 2599 /** 2600 * Returns a list of application processes installed on external media 2601 * that are running on the device. 2602 * 2603 * <p><b>Note: this method is only intended for debugging or building 2604 * a user-facing process management UI.</b></p> 2605 * 2606 * @return Returns a list of ApplicationInfo records, or null if none 2607 * This list ordering is not specified. 2608 * @hide 2609 */ 2610 public List<ApplicationInfo> getRunningExternalApplications() { 2611 try { 2612 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2613 } catch (RemoteException e) { 2614 return null; 2615 } 2616 } 2617 2618 /** 2619 * Sets the memory trim mode for a process and schedules a memory trim operation. 2620 * 2621 * <p><b>Note: this method is only intended for testing framework.</b></p> 2622 * 2623 * @return Returns true if successful. 2624 * @hide 2625 */ 2626 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2627 try { 2628 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2629 level); 2630 } catch (RemoteException e) { 2631 return false; 2632 } 2633 } 2634 2635 /** 2636 * Returns a list of application processes that are running on the device. 2637 * 2638 * <p><b>Note: this method is only intended for debugging or building 2639 * a user-facing process management UI.</b></p> 2640 * 2641 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2642 * running processes (it will not return an empty list). This list ordering is not 2643 * specified. 2644 */ 2645 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2646 try { 2647 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2648 } catch (RemoteException e) { 2649 return null; 2650 } 2651 } 2652 2653 /** 2654 * Return the importance of a given package name, based on the processes that are 2655 * currently running. The return value is one of the importance constants defined 2656 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2657 * processes that this package has code running inside of. If there are no processes 2658 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2659 * @hide 2660 */ 2661 @SystemApi 2662 public int getPackageImportance(String packageName) { 2663 try { 2664 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2665 mContext.getOpPackageName()); 2666 return RunningAppProcessInfo.procStateToImportance(procState); 2667 } catch (RemoteException e) { 2668 return RunningAppProcessInfo.IMPORTANCE_GONE; 2669 } 2670 } 2671 2672 /** 2673 * Return global memory state information for the calling process. This 2674 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2675 * only fields that will be filled in are 2676 * {@link RunningAppProcessInfo#pid}, 2677 * {@link RunningAppProcessInfo#uid}, 2678 * {@link RunningAppProcessInfo#lastTrimLevel}, 2679 * {@link RunningAppProcessInfo#importance}, 2680 * {@link RunningAppProcessInfo#lru}, and 2681 * {@link RunningAppProcessInfo#importanceReasonCode}. 2682 */ 2683 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2684 try { 2685 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2686 } catch (RemoteException e) { 2687 } 2688 } 2689 2690 /** 2691 * Return information about the memory usage of one or more processes. 2692 * 2693 * <p><b>Note: this method is only intended for debugging or building 2694 * a user-facing process management UI.</b></p> 2695 * 2696 * @param pids The pids of the processes whose memory usage is to be 2697 * retrieved. 2698 * @return Returns an array of memory information, one for each 2699 * requested pid. 2700 */ 2701 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2702 try { 2703 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2704 } catch (RemoteException e) { 2705 return null; 2706 } 2707 } 2708 2709 /** 2710 * @deprecated This is now just a wrapper for 2711 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2712 * is no longer available to applications because it allows them to 2713 * break other applications by removing their alarms, stopping their 2714 * services, etc. 2715 */ 2716 @Deprecated 2717 public void restartPackage(String packageName) { 2718 killBackgroundProcesses(packageName); 2719 } 2720 2721 /** 2722 * Have the system immediately kill all background processes associated 2723 * with the given package. This is the same as the kernel killing those 2724 * processes to reclaim memory; the system will take care of restarting 2725 * these processes in the future as needed. 2726 * 2727 * <p>You must hold the permission 2728 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2729 * call this method. 2730 * 2731 * @param packageName The name of the package whose processes are to 2732 * be killed. 2733 */ 2734 public void killBackgroundProcesses(String packageName) { 2735 try { 2736 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2737 UserHandle.myUserId()); 2738 } catch (RemoteException e) { 2739 } 2740 } 2741 2742 /** 2743 * Kills the specified UID. 2744 * @param uid The UID to kill. 2745 * @param reason The reason for the kill. 2746 * 2747 * @hide 2748 */ 2749 @RequiresPermission(Manifest.permission.KILL_UID) 2750 public void killUid(int uid, String reason) { 2751 try { 2752 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2753 UserHandle.getUserId(uid), reason); 2754 } catch (RemoteException e) { 2755 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2756 } 2757 } 2758 2759 /** 2760 * Have the system perform a force stop of everything associated with 2761 * the given application package. All processes that share its uid 2762 * will be killed, all services it has running stopped, all activities 2763 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2764 * broadcast will be sent, so that any of its registered alarms can 2765 * be stopped, notifications removed, etc. 2766 * 2767 * <p>You must hold the permission 2768 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2769 * call this method. 2770 * 2771 * @param packageName The name of the package to be stopped. 2772 * @param userId The user for which the running package is to be stopped. 2773 * 2774 * @hide This is not available to third party applications due to 2775 * it allowing them to break other applications by stopping their 2776 * services, removing their alarms, etc. 2777 */ 2778 public void forceStopPackageAsUser(String packageName, int userId) { 2779 try { 2780 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2781 } catch (RemoteException e) { 2782 } 2783 } 2784 2785 /** 2786 * @see #forceStopPackageAsUser(String, int) 2787 * @hide 2788 */ 2789 public void forceStopPackage(String packageName) { 2790 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2791 } 2792 2793 /** 2794 * Get the device configuration attributes. 2795 */ 2796 public ConfigurationInfo getDeviceConfigurationInfo() { 2797 try { 2798 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2799 } catch (RemoteException e) { 2800 } 2801 return null; 2802 } 2803 2804 /** 2805 * Get the preferred density of icons for the launcher. This is used when 2806 * custom drawables are created (e.g., for shortcuts). 2807 * 2808 * @return density in terms of DPI 2809 */ 2810 public int getLauncherLargeIconDensity() { 2811 final Resources res = mContext.getResources(); 2812 final int density = res.getDisplayMetrics().densityDpi; 2813 final int sw = res.getConfiguration().smallestScreenWidthDp; 2814 2815 if (sw < 600) { 2816 // Smaller than approx 7" tablets, use the regular icon size. 2817 return density; 2818 } 2819 2820 switch (density) { 2821 case DisplayMetrics.DENSITY_LOW: 2822 return DisplayMetrics.DENSITY_MEDIUM; 2823 case DisplayMetrics.DENSITY_MEDIUM: 2824 return DisplayMetrics.DENSITY_HIGH; 2825 case DisplayMetrics.DENSITY_TV: 2826 return DisplayMetrics.DENSITY_XHIGH; 2827 case DisplayMetrics.DENSITY_HIGH: 2828 return DisplayMetrics.DENSITY_XHIGH; 2829 case DisplayMetrics.DENSITY_XHIGH: 2830 return DisplayMetrics.DENSITY_XXHIGH; 2831 case DisplayMetrics.DENSITY_XXHIGH: 2832 return DisplayMetrics.DENSITY_XHIGH * 2; 2833 default: 2834 // The density is some abnormal value. Return some other 2835 // abnormal value that is a reasonable scaling of it. 2836 return (int)((density*1.5f)+.5f); 2837 } 2838 } 2839 2840 /** 2841 * Get the preferred launcher icon size. This is used when custom drawables 2842 * are created (e.g., for shortcuts). 2843 * 2844 * @return dimensions of square icons in terms of pixels 2845 */ 2846 public int getLauncherLargeIconSize() { 2847 return getLauncherLargeIconSizeInner(mContext); 2848 } 2849 2850 static int getLauncherLargeIconSizeInner(Context context) { 2851 final Resources res = context.getResources(); 2852 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2853 final int sw = res.getConfiguration().smallestScreenWidthDp; 2854 2855 if (sw < 600) { 2856 // Smaller than approx 7" tablets, use the regular icon size. 2857 return size; 2858 } 2859 2860 final int density = res.getDisplayMetrics().densityDpi; 2861 2862 switch (density) { 2863 case DisplayMetrics.DENSITY_LOW: 2864 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2865 case DisplayMetrics.DENSITY_MEDIUM: 2866 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2867 case DisplayMetrics.DENSITY_TV: 2868 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2869 case DisplayMetrics.DENSITY_HIGH: 2870 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2871 case DisplayMetrics.DENSITY_XHIGH: 2872 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2873 case DisplayMetrics.DENSITY_XXHIGH: 2874 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2875 default: 2876 // The density is some abnormal value. Return some other 2877 // abnormal value that is a reasonable scaling of it. 2878 return (int)((size*1.5f) + .5f); 2879 } 2880 } 2881 2882 /** 2883 * Returns "true" if the user interface is currently being messed with 2884 * by a monkey. 2885 */ 2886 public static boolean isUserAMonkey() { 2887 try { 2888 return ActivityManagerNative.getDefault().isUserAMonkey(); 2889 } catch (RemoteException e) { 2890 } 2891 return false; 2892 } 2893 2894 /** 2895 * Returns "true" if device is running in a test harness. 2896 */ 2897 public static boolean isRunningInTestHarness() { 2898 return SystemProperties.getBoolean("ro.test_harness", false); 2899 } 2900 2901 /** 2902 * Returns the launch count of each installed package. 2903 * 2904 * @hide 2905 */ 2906 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2907 try { 2908 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2909 ServiceManager.getService("usagestats")); 2910 if (usageStatsService == null) { 2911 return new HashMap<String, Integer>(); 2912 } 2913 2914 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2915 ActivityThread.currentPackageName()); 2916 if (allPkgUsageStats == null) { 2917 return new HashMap<String, Integer>(); 2918 } 2919 2920 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2921 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2922 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2923 } 2924 2925 return launchCounts; 2926 } catch (RemoteException e) { 2927 Log.w(TAG, "Could not query launch counts", e); 2928 return new HashMap<String, Integer>(); 2929 } 2930 }*/ 2931 2932 /** @hide */ 2933 public static int checkComponentPermission(String permission, int uid, 2934 int owningUid, boolean exported) { 2935 // Root, system server get to do everything. 2936 final int appId = UserHandle.getAppId(uid); 2937 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2938 return PackageManager.PERMISSION_GRANTED; 2939 } 2940 // Isolated processes don't get any permissions. 2941 if (UserHandle.isIsolated(uid)) { 2942 return PackageManager.PERMISSION_DENIED; 2943 } 2944 // If there is a uid that owns whatever is being accessed, it has 2945 // blanket access to it regardless of the permissions it requires. 2946 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2947 return PackageManager.PERMISSION_GRANTED; 2948 } 2949 // If the target is not exported, then nobody else can get to it. 2950 if (!exported) { 2951 /* 2952 RuntimeException here = new RuntimeException("here"); 2953 here.fillInStackTrace(); 2954 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2955 here); 2956 */ 2957 return PackageManager.PERMISSION_DENIED; 2958 } 2959 if (permission == null) { 2960 return PackageManager.PERMISSION_GRANTED; 2961 } 2962 try { 2963 return AppGlobals.getPackageManager() 2964 .checkUidPermission(permission, uid); 2965 } catch (RemoteException e) { 2966 // Should never happen, but if it does... deny! 2967 Slog.e(TAG, "PackageManager is dead?!?", e); 2968 } 2969 return PackageManager.PERMISSION_DENIED; 2970 } 2971 2972 /** @hide */ 2973 public static int checkUidPermission(String permission, int uid) { 2974 try { 2975 return AppGlobals.getPackageManager() 2976 .checkUidPermission(permission, uid); 2977 } catch (RemoteException e) { 2978 // Should never happen, but if it does... deny! 2979 Slog.e(TAG, "PackageManager is dead?!?", e); 2980 } 2981 return PackageManager.PERMISSION_DENIED; 2982 } 2983 2984 /** 2985 * @hide 2986 * Helper for dealing with incoming user arguments to system service calls. 2987 * Takes care of checking permissions and converting USER_CURRENT to the 2988 * actual current user. 2989 * 2990 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2991 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2992 * @param userId The user id argument supplied by the caller -- this is the user 2993 * they want to run as. 2994 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2995 * to get a USER_ALL returned and deal with it correctly. If false, 2996 * an exception will be thrown if USER_ALL is supplied. 2997 * @param requireFull If true, the caller must hold 2998 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2999 * different user than their current process; otherwise they must hold 3000 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3001 * @param name Optional textual name of the incoming call; only for generating error messages. 3002 * @param callerPackage Optional package name of caller; only for error messages. 3003 * 3004 * @return Returns the user ID that the call should run as. Will always be a concrete 3005 * user number, unless <var>allowAll</var> is true in which case it could also be 3006 * USER_ALL. 3007 */ 3008 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3009 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3010 if (UserHandle.getUserId(callingUid) == userId) { 3011 return userId; 3012 } 3013 try { 3014 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3015 callingUid, userId, allowAll, requireFull, name, callerPackage); 3016 } catch (RemoteException e) { 3017 throw new SecurityException("Failed calling activity manager", e); 3018 } 3019 } 3020 3021 /** 3022 * Gets the userId of the current foreground user. Requires system permissions. 3023 * @hide 3024 */ 3025 @SystemApi 3026 public static int getCurrentUser() { 3027 UserInfo ui; 3028 try { 3029 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3030 return ui != null ? ui.id : 0; 3031 } catch (RemoteException e) { 3032 return 0; 3033 } 3034 } 3035 3036 /** 3037 * @param userid the user's id. Zero indicates the default user. 3038 * @hide 3039 */ 3040 public boolean switchUser(int userid) { 3041 try { 3042 return ActivityManagerNative.getDefault().switchUser(userid); 3043 } catch (RemoteException e) { 3044 return false; 3045 } 3046 } 3047 3048 /** {@hide} */ 3049 public static final int FLAG_OR_STOPPED = 1 << 0; 3050 /** {@hide} */ 3051 public static final int FLAG_WITH_AMNESIA = 1 << 1; 3052 3053 /** 3054 * Return whether the given user is actively running. This means that 3055 * the user is in the "started" state, not "stopped" -- it is currently 3056 * allowed to run code through scheduled alarms, receiving broadcasts, 3057 * etc. A started user may be either the current foreground user or a 3058 * background user; the result here does not distinguish between the two. 3059 * @param userid the user's id. Zero indicates the default user. 3060 * @hide 3061 */ 3062 public boolean isUserRunning(int userid) { 3063 try { 3064 return ActivityManagerNative.getDefault().isUserRunning(userid, 0); 3065 } catch (RemoteException e) { 3066 return false; 3067 } 3068 } 3069 3070 /** 3071 * Perform a system dump of various state associated with the given application 3072 * package name. This call blocks while the dump is being performed, so should 3073 * not be done on a UI thread. The data will be written to the given file 3074 * descriptor as text. An application must hold the 3075 * {@link android.Manifest.permission#DUMP} permission to make this call. 3076 * @param fd The file descriptor that the dump should be written to. The file 3077 * descriptor is <em>not</em> closed by this function; the caller continues to 3078 * own it. 3079 * @param packageName The name of the package that is to be dumped. 3080 */ 3081 public void dumpPackageState(FileDescriptor fd, String packageName) { 3082 dumpPackageStateStatic(fd, packageName); 3083 } 3084 3085 /** 3086 * @hide 3087 */ 3088 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3089 FileOutputStream fout = new FileOutputStream(fd); 3090 PrintWriter pw = new FastPrintWriter(fout); 3091 dumpService(pw, fd, "package", new String[] { packageName }); 3092 pw.println(); 3093 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3094 "-a", "package", packageName }); 3095 pw.println(); 3096 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3097 pw.println(); 3098 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3099 pw.println(); 3100 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3101 pw.println(); 3102 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3103 pw.flush(); 3104 } 3105 3106 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3107 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3108 IBinder service = ServiceManager.checkService(name); 3109 if (service == null) { 3110 pw.println(" (Service not found)"); 3111 return; 3112 } 3113 TransferPipe tp = null; 3114 try { 3115 pw.flush(); 3116 tp = new TransferPipe(); 3117 tp.setBufferPrefix(" "); 3118 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3119 tp.go(fd, 10000); 3120 } catch (Throwable e) { 3121 if (tp != null) { 3122 tp.kill(); 3123 } 3124 pw.println("Failure dumping service:"); 3125 e.printStackTrace(pw); 3126 } 3127 } 3128 3129 /** 3130 * Request that the system start watching for the calling process to exceed a pss 3131 * size as given here. Once called, the system will look for any occasions where it 3132 * sees the associated process with a larger pss size and, when this happens, automatically 3133 * pull a heap dump from it and allow the user to share the data. Note that this request 3134 * continues running even if the process is killed and restarted. To remove the watch, 3135 * use {@link #clearWatchHeapLimit()}. 3136 * 3137 * <p>This API only work if the calling process has been marked as 3138 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3139 * (userdebug or eng) build.</p> 3140 * 3141 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3142 * handle heap limit reports themselves.</p> 3143 * 3144 * @param pssSize The size in bytes to set the limit at. 3145 */ 3146 public void setWatchHeapLimit(long pssSize) { 3147 try { 3148 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3149 mContext.getPackageName()); 3150 } catch (RemoteException e) { 3151 } 3152 } 3153 3154 /** 3155 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3156 * If your package has an activity handling this action, it will be launched with the 3157 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3158 * match the activty must support this action and a MIME type of "*/*". 3159 */ 3160 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3161 3162 /** 3163 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3164 */ 3165 public void clearWatchHeapLimit() { 3166 try { 3167 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3168 } catch (RemoteException e) { 3169 } 3170 } 3171 3172 /** 3173 * @hide 3174 */ 3175 public void startLockTaskMode(int taskId) { 3176 try { 3177 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3178 } catch (RemoteException e) { 3179 } 3180 } 3181 3182 /** 3183 * @hide 3184 */ 3185 public void stopLockTaskMode() { 3186 try { 3187 ActivityManagerNative.getDefault().stopLockTaskMode(); 3188 } catch (RemoteException e) { 3189 } 3190 } 3191 3192 /** 3193 * Return whether currently in lock task mode. When in this mode 3194 * no new tasks can be created or switched to. 3195 * 3196 * @see Activity#startLockTask() 3197 * 3198 * @deprecated Use {@link #getLockTaskModeState} instead. 3199 */ 3200 public boolean isInLockTaskMode() { 3201 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3202 } 3203 3204 /** 3205 * Return the current state of task locking. The three possible outcomes 3206 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3207 * and {@link #LOCK_TASK_MODE_PINNED}. 3208 * 3209 * @see Activity#startLockTask() 3210 */ 3211 public int getLockTaskModeState() { 3212 try { 3213 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3214 } catch (RemoteException e) { 3215 return ActivityManager.LOCK_TASK_MODE_NONE; 3216 } 3217 } 3218 3219 /** 3220 * The AppTask allows you to manage your own application's tasks. 3221 * See {@link android.app.ActivityManager#getAppTasks()} 3222 */ 3223 public static class AppTask { 3224 private IAppTask mAppTaskImpl; 3225 3226 /** @hide */ 3227 public AppTask(IAppTask task) { 3228 mAppTaskImpl = task; 3229 } 3230 3231 /** 3232 * Finishes all activities in this task and removes it from the recent tasks list. 3233 */ 3234 public void finishAndRemoveTask() { 3235 try { 3236 mAppTaskImpl.finishAndRemoveTask(); 3237 } catch (RemoteException e) { 3238 Slog.e(TAG, "Invalid AppTask", e); 3239 } 3240 } 3241 3242 /** 3243 * Get the RecentTaskInfo associated with this task. 3244 * 3245 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3246 */ 3247 public RecentTaskInfo getTaskInfo() { 3248 try { 3249 return mAppTaskImpl.getTaskInfo(); 3250 } catch (RemoteException e) { 3251 Slog.e(TAG, "Invalid AppTask", e); 3252 return null; 3253 } 3254 } 3255 3256 /** 3257 * Bring this task to the foreground. If it contains activities, they will be 3258 * brought to the foreground with it and their instances re-created if needed. 3259 * If it doesn't contain activities, the root activity of the task will be 3260 * re-launched. 3261 */ 3262 public void moveToFront() { 3263 try { 3264 mAppTaskImpl.moveToFront(); 3265 } catch (RemoteException e) { 3266 Slog.e(TAG, "Invalid AppTask", e); 3267 } 3268 } 3269 3270 /** 3271 * Start an activity in this task. Brings the task to the foreground. If this task 3272 * is not currently active (that is, its id < 0), then a new activity for the given 3273 * Intent will be launched as the root of the task and the task brought to the 3274 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3275 * an activity to launch in a new task, then a new activity for the given Intent will 3276 * be launched on top of the task and the task brought to the foreground. If this 3277 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3278 * or would otherwise be launched in to a new task, then the activity not launched but 3279 * this task be brought to the foreground and a new intent delivered to the top 3280 * activity if appropriate. 3281 * 3282 * <p>In other words, you generally want to use an Intent here that does not specify 3283 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3284 * and let the system do the right thing.</p> 3285 * 3286 * @param intent The Intent describing the new activity to be launched on the task. 3287 * @param options Optional launch options. 3288 * 3289 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3290 */ 3291 public void startActivity(Context context, Intent intent, Bundle options) { 3292 ActivityThread thread = ActivityThread.currentActivityThread(); 3293 thread.getInstrumentation().execStartActivityFromAppTask(context, 3294 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3295 } 3296 3297 /** 3298 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3299 * Intent of this AppTask. 3300 * 3301 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3302 * be set; otherwise, it will be cleared. 3303 */ 3304 public void setExcludeFromRecents(boolean exclude) { 3305 try { 3306 mAppTaskImpl.setExcludeFromRecents(exclude); 3307 } catch (RemoteException e) { 3308 Slog.e(TAG, "Invalid AppTask", e); 3309 } 3310 } 3311 } 3312} 3313