ActivityManager.java revision 8924e8759f9a8cffb5ad538ca40a7826793aac07
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.Manifest; 20import android.annotation.NonNull; 21import android.annotation.Nullable; 22import android.annotation.RequiresPermission; 23import android.annotation.SystemApi; 24import android.graphics.Canvas; 25import android.graphics.Matrix; 26import android.graphics.Point; 27import android.os.BatteryStats; 28import android.os.IBinder; 29import android.os.ParcelFileDescriptor; 30 31import android.util.Log; 32import com.android.internal.app.ProcessStats; 33import com.android.internal.os.TransferPipe; 34import com.android.internal.util.FastPrintWriter; 35 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.pm.ApplicationInfo; 40import android.content.pm.ConfigurationInfo; 41import android.content.pm.IPackageDataObserver; 42import android.content.pm.PackageManager; 43import android.content.pm.UserInfo; 44import android.content.res.Resources; 45import android.graphics.Bitmap; 46import android.graphics.Color; 47import android.graphics.Rect; 48import android.os.Bundle; 49import android.os.Debug; 50import android.os.Handler; 51import android.os.Parcel; 52import android.os.Parcelable; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.ServiceManager; 56import android.os.SystemProperties; 57import android.os.UserHandle; 58import android.text.TextUtils; 59import android.util.DisplayMetrics; 60import android.util.Size; 61import android.util.Slog; 62import org.xmlpull.v1.XmlSerializer; 63 64import java.io.FileDescriptor; 65import java.io.FileOutputStream; 66import java.io.IOException; 67import java.io.PrintWriter; 68import java.util.ArrayList; 69import java.util.List; 70 71/** 72 * Interact with the overall activities running in the system. 73 */ 74public class ActivityManager { 75 private static String TAG = "ActivityManager"; 76 77 private static int gMaxRecentTasks = -1; 78 79 private final Context mContext; 80 private final Handler mHandler; 81 82 /** 83 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 84 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 85 * uninstalled in lieu of the declaring one. The package named here must be 86 * signed with the same certificate as the one declaring the {@code <meta-data>}. 87 */ 88 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 89 90 /** 91 * Result for IActivityManager.startActivity: trying to start a background user 92 * activity that shouldn't be displayed for all users. 93 * @hide 94 */ 95 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 96 97 /** 98 * Result for IActivityManager.startActivity: trying to start an activity under voice 99 * control when that activity does not support the VOICE category. 100 * @hide 101 */ 102 public static final int START_NOT_VOICE_COMPATIBLE = -7; 103 104 /** 105 * Result for IActivityManager.startActivity: an error where the 106 * start had to be canceled. 107 * @hide 108 */ 109 public static final int START_CANCELED = -6; 110 111 /** 112 * Result for IActivityManager.startActivity: an error where the 113 * thing being started is not an activity. 114 * @hide 115 */ 116 public static final int START_NOT_ACTIVITY = -5; 117 118 /** 119 * Result for IActivityManager.startActivity: an error where the 120 * caller does not have permission to start the activity. 121 * @hide 122 */ 123 public static final int START_PERMISSION_DENIED = -4; 124 125 /** 126 * Result for IActivityManager.startActivity: an error where the 127 * caller has requested both to forward a result and to receive 128 * a result. 129 * @hide 130 */ 131 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 132 133 /** 134 * Result for IActivityManager.startActivity: an error where the 135 * requested class is not found. 136 * @hide 137 */ 138 public static final int START_CLASS_NOT_FOUND = -2; 139 140 /** 141 * Result for IActivityManager.startActivity: an error where the 142 * given Intent could not be resolved to an activity. 143 * @hide 144 */ 145 public static final int START_INTENT_NOT_RESOLVED = -1; 146 147 /** 148 * Result for IActivityManaqer.startActivity: the activity was started 149 * successfully as normal. 150 * @hide 151 */ 152 public static final int START_SUCCESS = 0; 153 154 /** 155 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 156 * be executed if it is the recipient, and that is indeed the case. 157 * @hide 158 */ 159 public static final int START_RETURN_INTENT_TO_CALLER = 1; 160 161 /** 162 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 163 * a task was simply brought to the foreground. 164 * @hide 165 */ 166 public static final int START_TASK_TO_FRONT = 2; 167 168 /** 169 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 170 * the given Intent was given to the existing top activity. 171 * @hide 172 */ 173 public static final int START_DELIVERED_TO_TOP = 3; 174 175 /** 176 * Result for IActivityManaqer.startActivity: request was canceled because 177 * app switches are temporarily canceled to ensure the user's last request 178 * (such as pressing home) is performed. 179 * @hide 180 */ 181 public static final int START_SWITCHES_CANCELED = 4; 182 183 /** 184 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 185 * while in Lock Task Mode. 186 * @hide 187 */ 188 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 189 190 /** 191 * Flag for IActivityManaqer.startActivity: do special start mode where 192 * a new activity is launched only if it is needed. 193 * @hide 194 */ 195 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 196 197 /** 198 * Flag for IActivityManaqer.startActivity: launch the app for 199 * debugging. 200 * @hide 201 */ 202 public static final int START_FLAG_DEBUG = 1<<1; 203 204 /** 205 * Flag for IActivityManaqer.startActivity: launch the app for 206 * allocation tracking. 207 * @hide 208 */ 209 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 210 211 /** 212 * Result for IActivityManaqer.broadcastIntent: success! 213 * @hide 214 */ 215 public static final int BROADCAST_SUCCESS = 0; 216 217 /** 218 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 219 * a sticky intent without appropriate permission. 220 * @hide 221 */ 222 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 223 224 /** 225 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 226 * to a stopped user. Fail. 227 * @hide 228 */ 229 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 230 231 /** 232 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 233 * for a sendBroadcast operation. 234 * @hide 235 */ 236 public static final int INTENT_SENDER_BROADCAST = 1; 237 238 /** 239 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 240 * for a startActivity operation. 241 * @hide 242 */ 243 public static final int INTENT_SENDER_ACTIVITY = 2; 244 245 /** 246 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 247 * for an activity result operation. 248 * @hide 249 */ 250 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 251 252 /** 253 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 254 * for a startService operation. 255 * @hide 256 */ 257 public static final int INTENT_SENDER_SERVICE = 4; 258 259 /** @hide User operation call: success! */ 260 public static final int USER_OP_SUCCESS = 0; 261 262 /** @hide User operation call: given user id is not known. */ 263 public static final int USER_OP_UNKNOWN_USER = -1; 264 265 /** @hide User operation call: given user id is the current user, can't be stopped. */ 266 public static final int USER_OP_IS_CURRENT = -2; 267 268 /** @hide Process does not exist. */ 269 public static final int PROCESS_STATE_NONEXISTENT = -1; 270 271 /** @hide Process is a persistent system process. */ 272 public static final int PROCESS_STATE_PERSISTENT = 0; 273 274 /** @hide Process is a persistent system process and is doing UI. */ 275 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 276 277 /** @hide Process is hosting the current top activities. Note that this covers 278 * all activities that are visible to the user. */ 279 public static final int PROCESS_STATE_TOP = 2; 280 281 /** @hide Process is hosting a foreground service due to a system binding. */ 282 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 283 284 /** @hide Process is hosting a foreground service. */ 285 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 286 287 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 288 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 289 290 /** @hide Process is important to the user, and something they are aware of. */ 291 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 292 293 /** @hide Process is important to the user, but not something they are aware of. */ 294 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 295 296 /** @hide Process is in the background running a backup/restore operation. */ 297 public static final int PROCESS_STATE_BACKUP = 8; 298 299 /** @hide Process is in the background, but it can't restore its state so we want 300 * to try to avoid killing it. */ 301 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 302 303 /** @hide Process is in the background running a service. Unlike oom_adj, this level 304 * is used for both the normal running in background state and the executing 305 * operations state. */ 306 public static final int PROCESS_STATE_SERVICE = 10; 307 308 /** @hide Process is in the background running a receiver. Note that from the 309 * perspective of oom_adj receivers run at a higher foreground level, but for our 310 * prioritization here that is not necessary and putting them below services means 311 * many fewer changes in some process states as they receive broadcasts. */ 312 public static final int PROCESS_STATE_RECEIVER = 11; 313 314 /** @hide Process is in the background but hosts the home activity. */ 315 public static final int PROCESS_STATE_HOME = 12; 316 317 /** @hide Process is in the background but hosts the last shown activity. */ 318 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 319 320 /** @hide Process is being cached for later use and contains activities. */ 321 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 322 323 /** @hide Process is being cached for later use and is a client of another cached 324 * process that contains activities. */ 325 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 326 327 /** @hide Process is being cached for later use and is empty. */ 328 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 329 330 /** @hide Should this process state be considered a background state? */ 331 public static final boolean isProcStateBackground(int procState) { 332 return procState >= PROCESS_STATE_BACKUP; 333 } 334 335 /** @hide requestType for assist context: only basic information. */ 336 public static final int ASSIST_CONTEXT_BASIC = 0; 337 338 /** @hide requestType for assist context: generate full AssistStructure. */ 339 public static final int ASSIST_CONTEXT_FULL = 1; 340 341 /** @hide Flag for registerUidObserver: report changes in process state. */ 342 public static final int UID_OBSERVER_PROCSTATE = 1<<0; 343 344 /** @hide Flag for registerUidObserver: report uid gone. */ 345 public static final int UID_OBSERVER_GONE = 1<<1; 346 347 /** @hide Flag for registerUidObserver: report uid has become idle. */ 348 public static final int UID_OBSERVER_IDLE = 1<<2; 349 350 /** @hide Flag for registerUidObserver: report uid has become active. */ 351 public static final int UID_OBSERVER_ACTIVE = 1<<3; 352 353 /** @hide Mode for {@link IActivityManager#getAppStartMode}: normal free-to-run operation. */ 354 public static final int APP_START_MODE_NORMAL = 0; 355 356 /** @hide Mode for {@link IActivityManager#getAppStartMode}: delay running until later. */ 357 public static final int APP_START_MODE_DELAYED = 1; 358 359 /** @hide Mode for {@link IActivityManager#getAppStartMode}: disable/cancel pending 360 * launches. */ 361 public static final int APP_START_MODE_DISABLED = 2; 362 363 /** 364 * Lock task mode is not active. 365 */ 366 public static final int LOCK_TASK_MODE_NONE = 0; 367 368 /** 369 * Full lock task mode is active. 370 */ 371 public static final int LOCK_TASK_MODE_LOCKED = 1; 372 373 /** 374 * App pinning mode is active. 375 */ 376 public static final int LOCK_TASK_MODE_PINNED = 2; 377 378 Point mAppTaskThumbnailSize; 379 380 /*package*/ ActivityManager(Context context, Handler handler) { 381 mContext = context; 382 mHandler = handler; 383 } 384 385 /** 386 * Screen compatibility mode: the application most always run in 387 * compatibility mode. 388 * @hide 389 */ 390 public static final int COMPAT_MODE_ALWAYS = -1; 391 392 /** 393 * Screen compatibility mode: the application can never run in 394 * compatibility mode. 395 * @hide 396 */ 397 public static final int COMPAT_MODE_NEVER = -2; 398 399 /** 400 * Screen compatibility mode: unknown. 401 * @hide 402 */ 403 public static final int COMPAT_MODE_UNKNOWN = -3; 404 405 /** 406 * Screen compatibility mode: the application currently has compatibility 407 * mode disabled. 408 * @hide 409 */ 410 public static final int COMPAT_MODE_DISABLED = 0; 411 412 /** 413 * Screen compatibility mode: the application currently has compatibility 414 * mode enabled. 415 * @hide 416 */ 417 public static final int COMPAT_MODE_ENABLED = 1; 418 419 /** 420 * Screen compatibility mode: request to toggle the application's 421 * compatibility mode. 422 * @hide 423 */ 424 public static final int COMPAT_MODE_TOGGLE = 2; 425 426 /** @hide */ 427 public static class StackId { 428 /** Invalid stack ID. */ 429 public static final int INVALID_STACK_ID = -1; 430 431 /** First static stack ID. */ 432 public static final int FIRST_STATIC_STACK_ID = 0; 433 434 /** Home activity stack ID. */ 435 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 436 437 /** ID of stack where fullscreen activities are normally launched into. */ 438 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 439 440 /** ID of stack where freeform/resized activities are normally launched into. */ 441 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 442 443 /** ID of stack that occupies a dedicated region of the screen. */ 444 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 445 446 /** ID of stack that always on top (always visible) when it exist. */ 447 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 448 449 /** Last static stack stack ID. */ 450 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 451 452 /** Start of ID range used by stacks that are created dynamically. */ 453 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 454 455 public static boolean isStaticStack(int stackId) { 456 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 457 } 458 459 /** 460 * Returns true if the activities contained in the input stack display a shadow around 461 * their border. 462 */ 463 public static boolean hasWindowShadow(int stackId) { 464 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 465 } 466 467 /** 468 * Returns true if the activities contained in the input stack display a decor view. 469 */ 470 public static boolean hasWindowDecor(int stackId) { 471 return stackId == FREEFORM_WORKSPACE_STACK_ID; 472 } 473 474 /** 475 * Returns true if the tasks contained in the stack can be resized independently of the 476 * stack. 477 */ 478 public static boolean isTaskResizeAllowed(int stackId) { 479 return stackId == FREEFORM_WORKSPACE_STACK_ID; 480 } 481 482 /** 483 * Returns true if the task bounds should persist across power cycles. 484 */ 485 public static boolean persistTaskBounds(int stackId) { 486 return isStaticStack(stackId) && 487 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 488 } 489 490 /** 491 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 492 */ 493 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 494 return stackId == PINNED_STACK_ID; 495 } 496 497 /** 498 * Returns true if we try to maintain focus in the current stack when the top activity 499 * finishes. 500 */ 501 public static boolean keepFocusInStackIfPossible(int stackId) { 502 return stackId == FREEFORM_WORKSPACE_STACK_ID 503 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 504 } 505 506 /** 507 * Returns true if Stack size is affected by the docked stack changing size. 508 */ 509 public static boolean isResizeableByDockedStack(int stackId) { 510 return isStaticStack(stackId) && 511 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 512 } 513 514 /** 515 * Returns true if the size of tasks in the input stack are affected by the docked stack 516 * changing size. 517 */ 518 public static boolean isTaskResizeableByDockedStack(int stackId) { 519 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 520 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 521 } 522 523 /** 524 * Returns true if the windows of tasks being moved to this stack should be preserved so 525 * there isn't a display gap. 526 */ 527 public static boolean preserveWindowOnTaskMove(int stackId) { 528 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 529 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 530 } 531 532 /** 533 * Returns true if animation specs should be constructed for app transition that moves 534 * the task to the specified stack. 535 */ 536 public static boolean useAnimationSpecForAppTransition(int stackId) { 537 return stackId == FREEFORM_WORKSPACE_STACK_ID 538 || stackId == FULLSCREEN_WORKSPACE_STACK_ID || stackId == DOCKED_STACK_ID; 539 } 540 } 541 542 /** 543 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 544 * specifies the position of the created docked stack at the top half of the screen if 545 * in portrait mode or at the left half of the screen if in landscape mode. 546 * @hide 547 */ 548 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 549 550 /** 551 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 552 * specifies the position of the created docked stack at the bottom half of the screen if 553 * in portrait mode or at the right half of the screen if in landscape mode. 554 * @hide 555 */ 556 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 557 558 /** 559 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 560 * that the resize doesn't need to preserve the window, and can be skipped if bounds 561 * is unchanged. This mode is used by window manager in most cases. 562 * @hide 563 */ 564 public static final int RESIZE_MODE_SYSTEM = 0; 565 566 /** 567 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 568 * that the resize should preserve the window if possible. 569 * @hide 570 */ 571 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 572 573 /** 574 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 575 * that the resize should be performed even if the bounds appears unchanged. 576 * @hide 577 */ 578 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 579 580 /** 581 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 582 * manager during a screen rotation. 583 * @hide 584 */ 585 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 586 587 /** 588 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 589 * resize is due to a drag action. 590 * @hide 591 */ 592 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 593 594 /** 595 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 596 * that the resize should preserve the window if possible, and should not be skipped 597 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 598 * is ending. 599 * @hide 600 */ 601 public static final int RESIZE_MODE_USER_FORCED = 602 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 603 604 /** @hide */ 605 public int getFrontActivityScreenCompatMode() { 606 try { 607 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 608 } catch (RemoteException e) { 609 // System dead, we will be dead too soon! 610 return 0; 611 } 612 } 613 614 /** @hide */ 615 public void setFrontActivityScreenCompatMode(int mode) { 616 try { 617 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 618 } catch (RemoteException e) { 619 // System dead, we will be dead too soon! 620 } 621 } 622 623 /** @hide */ 624 public int getPackageScreenCompatMode(String packageName) { 625 try { 626 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 627 } catch (RemoteException e) { 628 // System dead, we will be dead too soon! 629 return 0; 630 } 631 } 632 633 /** @hide */ 634 public void setPackageScreenCompatMode(String packageName, int mode) { 635 try { 636 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 637 } catch (RemoteException e) { 638 // System dead, we will be dead too soon! 639 } 640 } 641 642 /** @hide */ 643 public boolean getPackageAskScreenCompat(String packageName) { 644 try { 645 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 646 } catch (RemoteException e) { 647 // System dead, we will be dead too soon! 648 return false; 649 } 650 } 651 652 /** @hide */ 653 public void setPackageAskScreenCompat(String packageName, boolean ask) { 654 try { 655 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 656 } catch (RemoteException e) { 657 // System dead, we will be dead too soon! 658 } 659 } 660 661 /** 662 * Return the approximate per-application memory class of the current 663 * device. This gives you an idea of how hard a memory limit you should 664 * impose on your application to let the overall system work best. The 665 * returned value is in megabytes; the baseline Android memory class is 666 * 16 (which happens to be the Java heap limit of those devices); some 667 * device with more memory may return 24 or even higher numbers. 668 */ 669 public int getMemoryClass() { 670 return staticGetMemoryClass(); 671 } 672 673 /** @hide */ 674 static public int staticGetMemoryClass() { 675 // Really brain dead right now -- just take this from the configured 676 // vm heap size, and assume it is in megabytes and thus ends with "m". 677 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 678 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 679 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 680 } 681 return staticGetLargeMemoryClass(); 682 } 683 684 /** 685 * Return the approximate per-application memory class of the current 686 * device when an application is running with a large heap. This is the 687 * space available for memory-intensive applications; most applications 688 * should not need this amount of memory, and should instead stay with the 689 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 690 * This may be the same size as {@link #getMemoryClass()} on memory 691 * constrained devices, or it may be significantly larger on devices with 692 * a large amount of available RAM. 693 * 694 * <p>The is the size of the application's Dalvik heap if it has 695 * specified <code>android:largeHeap="true"</code> in its manifest. 696 */ 697 public int getLargeMemoryClass() { 698 return staticGetLargeMemoryClass(); 699 } 700 701 /** @hide */ 702 static public int staticGetLargeMemoryClass() { 703 // Really brain dead right now -- just take this from the configured 704 // vm heap size, and assume it is in megabytes and thus ends with "m". 705 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 706 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 707 } 708 709 /** 710 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 711 * is ultimately up to the device configuration, but currently it generally means 712 * something in the class of a 512MB device with about a 800x480 or less screen. 713 * This is mostly intended to be used by apps to determine whether they should turn 714 * off certain features that require more RAM. 715 */ 716 public boolean isLowRamDevice() { 717 return isLowRamDeviceStatic(); 718 } 719 720 /** @hide */ 721 public static boolean isLowRamDeviceStatic() { 722 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 723 } 724 725 /** 726 * Used by persistent processes to determine if they are running on a 727 * higher-end device so should be okay using hardware drawing acceleration 728 * (which tends to consume a lot more RAM). 729 * @hide 730 */ 731 static public boolean isHighEndGfx() { 732 return !isLowRamDeviceStatic() && 733 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 734 } 735 736 /** 737 * Return the maximum number of recents entries that we will maintain and show. 738 * @hide 739 */ 740 static public int getMaxRecentTasksStatic() { 741 if (gMaxRecentTasks < 0) { 742 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 743 } 744 return gMaxRecentTasks; 745 } 746 747 /** 748 * Return the default limit on the number of recents that an app can make. 749 * @hide 750 */ 751 static public int getDefaultAppRecentsLimitStatic() { 752 return getMaxRecentTasksStatic() / 6; 753 } 754 755 /** 756 * Return the maximum limit on the number of recents that an app can make. 757 * @hide 758 */ 759 static public int getMaxAppRecentsLimitStatic() { 760 return getMaxRecentTasksStatic() / 2; 761 } 762 763 /** 764 * Information you can set and retrieve about the current activity within the recent task list. 765 */ 766 public static class TaskDescription implements Parcelable { 767 /** @hide */ 768 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 769 private static final String ATTR_TASKDESCRIPTIONLABEL = 770 ATTR_TASKDESCRIPTION_PREFIX + "label"; 771 private static final String ATTR_TASKDESCRIPTIONCOLOR = 772 ATTR_TASKDESCRIPTION_PREFIX + "color"; 773 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 774 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 775 776 private String mLabel; 777 private Bitmap mIcon; 778 private String mIconFilename; 779 private int mColorPrimary; 780 781 /** 782 * Creates the TaskDescription to the specified values. 783 * 784 * @param label A label and description of the current state of this task. 785 * @param icon An icon that represents the current state of this task. 786 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 787 */ 788 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 789 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 790 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 791 } 792 793 mLabel = label; 794 mIcon = icon; 795 mColorPrimary = colorPrimary; 796 } 797 798 /** @hide */ 799 public TaskDescription(String label, int colorPrimary, String iconFilename) { 800 this(label, null, colorPrimary); 801 mIconFilename = iconFilename; 802 } 803 804 /** 805 * Creates the TaskDescription to the specified values. 806 * 807 * @param label A label and description of the current state of this activity. 808 * @param icon An icon that represents the current state of this activity. 809 */ 810 public TaskDescription(String label, Bitmap icon) { 811 this(label, icon, 0); 812 } 813 814 /** 815 * Creates the TaskDescription to the specified values. 816 * 817 * @param label A label and description of the current state of this activity. 818 */ 819 public TaskDescription(String label) { 820 this(label, null, 0); 821 } 822 823 /** 824 * Creates an empty TaskDescription. 825 */ 826 public TaskDescription() { 827 this(null, null, 0); 828 } 829 830 /** 831 * Creates a copy of another TaskDescription. 832 */ 833 public TaskDescription(TaskDescription td) { 834 mLabel = td.mLabel; 835 mIcon = td.mIcon; 836 mColorPrimary = td.mColorPrimary; 837 mIconFilename = td.mIconFilename; 838 } 839 840 private TaskDescription(Parcel source) { 841 readFromParcel(source); 842 } 843 844 /** 845 * Sets the label for this task description. 846 * @hide 847 */ 848 public void setLabel(String label) { 849 mLabel = label; 850 } 851 852 /** 853 * Sets the primary color for this task description. 854 * @hide 855 */ 856 public void setPrimaryColor(int primaryColor) { 857 // Ensure that the given color is valid 858 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 859 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 860 } 861 mColorPrimary = primaryColor; 862 } 863 864 /** 865 * Sets the icon for this task description. 866 * @hide 867 */ 868 public void setIcon(Bitmap icon) { 869 mIcon = icon; 870 } 871 872 /** 873 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 874 * bitmap. 875 * @hide 876 */ 877 public void setIconFilename(String iconFilename) { 878 mIconFilename = iconFilename; 879 mIcon = null; 880 } 881 882 /** 883 * @return The label and description of the current state of this task. 884 */ 885 public String getLabel() { 886 return mLabel; 887 } 888 889 /** 890 * @return The icon that represents the current state of this task. 891 */ 892 public Bitmap getIcon() { 893 if (mIcon != null) { 894 return mIcon; 895 } 896 return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); 897 } 898 899 /** @hide */ 900 public String getIconFilename() { 901 return mIconFilename; 902 } 903 904 /** @hide */ 905 public Bitmap getInMemoryIcon() { 906 return mIcon; 907 } 908 909 /** @hide */ 910 public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { 911 if (iconFilename != null) { 912 try { 913 return ActivityManagerNative.getDefault(). 914 getTaskDescriptionIcon(iconFilename, userId); 915 } catch (RemoteException e) { 916 } 917 } 918 return null; 919 } 920 921 /** 922 * @return The color override on the theme's primary color. 923 */ 924 public int getPrimaryColor() { 925 return mColorPrimary; 926 } 927 928 /** @hide */ 929 public void saveToXml(XmlSerializer out) throws IOException { 930 if (mLabel != null) { 931 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 932 } 933 if (mColorPrimary != 0) { 934 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 935 } 936 if (mIconFilename != null) { 937 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 938 } 939 } 940 941 /** @hide */ 942 public void restoreFromXml(String attrName, String attrValue) { 943 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 944 setLabel(attrValue); 945 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 946 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 947 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 948 setIconFilename(attrValue); 949 } 950 } 951 952 @Override 953 public int describeContents() { 954 return 0; 955 } 956 957 @Override 958 public void writeToParcel(Parcel dest, int flags) { 959 if (mLabel == null) { 960 dest.writeInt(0); 961 } else { 962 dest.writeInt(1); 963 dest.writeString(mLabel); 964 } 965 if (mIcon == null) { 966 dest.writeInt(0); 967 } else { 968 dest.writeInt(1); 969 mIcon.writeToParcel(dest, 0); 970 } 971 dest.writeInt(mColorPrimary); 972 if (mIconFilename == null) { 973 dest.writeInt(0); 974 } else { 975 dest.writeInt(1); 976 dest.writeString(mIconFilename); 977 } 978 } 979 980 public void readFromParcel(Parcel source) { 981 mLabel = source.readInt() > 0 ? source.readString() : null; 982 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 983 mColorPrimary = source.readInt(); 984 mIconFilename = source.readInt() > 0 ? source.readString() : null; 985 } 986 987 public static final Creator<TaskDescription> CREATOR 988 = new Creator<TaskDescription>() { 989 public TaskDescription createFromParcel(Parcel source) { 990 return new TaskDescription(source); 991 } 992 public TaskDescription[] newArray(int size) { 993 return new TaskDescription[size]; 994 } 995 }; 996 997 @Override 998 public String toString() { 999 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 1000 " colorPrimary: " + mColorPrimary; 1001 } 1002 } 1003 1004 /** 1005 * Information you can retrieve about tasks that the user has most recently 1006 * started or visited. 1007 */ 1008 public static class RecentTaskInfo implements Parcelable { 1009 /** 1010 * If this task is currently running, this is the identifier for it. 1011 * If it is not running, this will be -1. 1012 */ 1013 public int id; 1014 1015 /** 1016 * The true identifier of this task, valid even if it is not running. 1017 */ 1018 public int persistentId; 1019 1020 /** 1021 * The original Intent used to launch the task. You can use this 1022 * Intent to re-launch the task (if it is no longer running) or bring 1023 * the current task to the front. 1024 */ 1025 public Intent baseIntent; 1026 1027 /** 1028 * If this task was started from an alias, this is the actual 1029 * activity component that was initially started; the component of 1030 * the baseIntent in this case is the name of the actual activity 1031 * implementation that the alias referred to. Otherwise, this is null. 1032 */ 1033 public ComponentName origActivity; 1034 1035 /** 1036 * The actual activity component that started the task. 1037 * @hide 1038 */ 1039 @Nullable 1040 public ComponentName realActivity; 1041 1042 /** 1043 * Description of the task's last state. 1044 */ 1045 public CharSequence description; 1046 1047 /** 1048 * The id of the ActivityStack this Task was on most recently. 1049 * @hide 1050 */ 1051 public int stackId; 1052 1053 /** 1054 * The id of the user the task was running as. 1055 * @hide 1056 */ 1057 public int userId; 1058 1059 /** 1060 * The first time this task was active. 1061 * @hide 1062 */ 1063 public long firstActiveTime; 1064 1065 /** 1066 * The last time this task was active. 1067 * @hide 1068 */ 1069 public long lastActiveTime; 1070 1071 /** 1072 * The recent activity values for the highest activity in the stack to have set the values. 1073 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1074 */ 1075 public TaskDescription taskDescription; 1076 1077 /** 1078 * Task affiliation for grouping with other tasks. 1079 */ 1080 public int affiliatedTaskId; 1081 1082 /** 1083 * Task affiliation color of the source task with the affiliated task id. 1084 * 1085 * @hide 1086 */ 1087 public int affiliatedTaskColor; 1088 1089 /** 1090 * The component launched as the first activity in the task. 1091 * This can be considered the "application" of this task. 1092 */ 1093 public ComponentName baseActivity; 1094 1095 /** 1096 * The activity component at the top of the history stack of the task. 1097 * This is what the user is currently doing. 1098 */ 1099 public ComponentName topActivity; 1100 1101 /** 1102 * Number of activities in this task. 1103 */ 1104 public int numActivities; 1105 1106 /** 1107 * The bounds of the task. 1108 * @hide 1109 */ 1110 public Rect bounds; 1111 1112 public RecentTaskInfo() { 1113 } 1114 1115 @Override 1116 public int describeContents() { 1117 return 0; 1118 } 1119 1120 @Override 1121 public void writeToParcel(Parcel dest, int flags) { 1122 dest.writeInt(id); 1123 dest.writeInt(persistentId); 1124 if (baseIntent != null) { 1125 dest.writeInt(1); 1126 baseIntent.writeToParcel(dest, 0); 1127 } else { 1128 dest.writeInt(0); 1129 } 1130 ComponentName.writeToParcel(origActivity, dest); 1131 ComponentName.writeToParcel(realActivity, dest); 1132 TextUtils.writeToParcel(description, dest, 1133 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1134 if (taskDescription != null) { 1135 dest.writeInt(1); 1136 taskDescription.writeToParcel(dest, 0); 1137 } else { 1138 dest.writeInt(0); 1139 } 1140 dest.writeInt(stackId); 1141 dest.writeInt(userId); 1142 dest.writeLong(firstActiveTime); 1143 dest.writeLong(lastActiveTime); 1144 dest.writeInt(affiliatedTaskId); 1145 dest.writeInt(affiliatedTaskColor); 1146 ComponentName.writeToParcel(baseActivity, dest); 1147 ComponentName.writeToParcel(topActivity, dest); 1148 dest.writeInt(numActivities); 1149 if (bounds != null) { 1150 dest.writeInt(1); 1151 bounds.writeToParcel(dest, 0); 1152 } else { 1153 dest.writeInt(0); 1154 } 1155 } 1156 1157 public void readFromParcel(Parcel source) { 1158 id = source.readInt(); 1159 persistentId = source.readInt(); 1160 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1161 origActivity = ComponentName.readFromParcel(source); 1162 realActivity = ComponentName.readFromParcel(source); 1163 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1164 taskDescription = source.readInt() > 0 ? 1165 TaskDescription.CREATOR.createFromParcel(source) : null; 1166 stackId = source.readInt(); 1167 userId = source.readInt(); 1168 firstActiveTime = source.readLong(); 1169 lastActiveTime = source.readLong(); 1170 affiliatedTaskId = source.readInt(); 1171 affiliatedTaskColor = source.readInt(); 1172 baseActivity = ComponentName.readFromParcel(source); 1173 topActivity = ComponentName.readFromParcel(source); 1174 numActivities = source.readInt(); 1175 bounds = source.readInt() > 0 ? 1176 Rect.CREATOR.createFromParcel(source) : null; 1177 } 1178 1179 public static final Creator<RecentTaskInfo> CREATOR 1180 = new Creator<RecentTaskInfo>() { 1181 public RecentTaskInfo createFromParcel(Parcel source) { 1182 return new RecentTaskInfo(source); 1183 } 1184 public RecentTaskInfo[] newArray(int size) { 1185 return new RecentTaskInfo[size]; 1186 } 1187 }; 1188 1189 private RecentTaskInfo(Parcel source) { 1190 readFromParcel(source); 1191 } 1192 } 1193 1194 /** 1195 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1196 * that have set their 1197 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1198 */ 1199 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1200 1201 /** 1202 * Provides a list that does not contain any 1203 * recent tasks that currently are not available to the user. 1204 */ 1205 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1206 1207 /** 1208 * Provides a list that contains recent tasks for all 1209 * profiles of a user. 1210 * @hide 1211 */ 1212 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1213 1214 /** 1215 * Ignores all tasks that are on the home stack. 1216 * @hide 1217 */ 1218 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1219 1220 /** 1221 * <p></p>Return a list of the tasks that the user has recently launched, with 1222 * the most recent being first and older ones after in order. 1223 * 1224 * <p><b>Note: this method is only intended for debugging and presenting 1225 * task management user interfaces</b>. This should never be used for 1226 * core logic in an application, such as deciding between different 1227 * behaviors based on the information found here. Such uses are 1228 * <em>not</em> supported, and will likely break in the future. For 1229 * example, if multiple applications can be actively running at the 1230 * same time, assumptions made about the meaning of the data here for 1231 * purposes of control flow will be incorrect.</p> 1232 * 1233 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1234 * no longer available to third party applications: the introduction of 1235 * document-centric recents means 1236 * it can leak personal information to the caller. For backwards compatibility, 1237 * it will still return a small subset of its data: at least the caller's 1238 * own tasks (though see {@link #getAppTasks()} for the correct supported 1239 * way to retrieve that information), and possibly some other tasks 1240 * such as home that are known to not be sensitive. 1241 * 1242 * @param maxNum The maximum number of entries to return in the list. The 1243 * actual number returned may be smaller, depending on how many tasks the 1244 * user has started and the maximum number the system can remember. 1245 * @param flags Information about what to return. May be any combination 1246 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1247 * 1248 * @return Returns a list of RecentTaskInfo records describing each of 1249 * the recent tasks. 1250 */ 1251 @Deprecated 1252 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1253 throws SecurityException { 1254 try { 1255 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1256 flags, UserHandle.myUserId()); 1257 } catch (RemoteException e) { 1258 // System dead, we will be dead too soon! 1259 return null; 1260 } 1261 } 1262 1263 /** 1264 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1265 * specific user. It requires holding 1266 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1267 * @param maxNum The maximum number of entries to return in the list. The 1268 * actual number returned may be smaller, depending on how many tasks the 1269 * user has started and the maximum number the system can remember. 1270 * @param flags Information about what to return. May be any combination 1271 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1272 * 1273 * @return Returns a list of RecentTaskInfo records describing each of 1274 * the recent tasks. Most recently activated tasks go first. 1275 * 1276 * @hide 1277 */ 1278 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1279 throws SecurityException { 1280 try { 1281 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1282 flags, userId); 1283 } catch (RemoteException e) { 1284 // System dead, we will be dead too soon! 1285 return null; 1286 } 1287 } 1288 1289 /** 1290 * Information you can retrieve about a particular task that is currently 1291 * "running" in the system. Note that a running task does not mean the 1292 * given task actually has a process it is actively running in; it simply 1293 * means that the user has gone to it and never closed it, but currently 1294 * the system may have killed its process and is only holding on to its 1295 * last state in order to restart it when the user returns. 1296 */ 1297 public static class RunningTaskInfo implements Parcelable { 1298 /** 1299 * A unique identifier for this task. 1300 */ 1301 public int id; 1302 1303 /** 1304 * The stack that currently contains this task. 1305 * @hide 1306 */ 1307 public int stackId; 1308 1309 /** 1310 * The component launched as the first activity in the task. This can 1311 * be considered the "application" of this task. 1312 */ 1313 public ComponentName baseActivity; 1314 1315 /** 1316 * The activity component at the top of the history stack of the task. 1317 * This is what the user is currently doing. 1318 */ 1319 public ComponentName topActivity; 1320 1321 /** 1322 * Thumbnail representation of the task's current state. Currently 1323 * always null. 1324 */ 1325 public Bitmap thumbnail; 1326 1327 /** 1328 * Description of the task's current state. 1329 */ 1330 public CharSequence description; 1331 1332 /** 1333 * Number of activities in this task. 1334 */ 1335 public int numActivities; 1336 1337 /** 1338 * Number of activities that are currently running (not stopped 1339 * and persisted) in this task. 1340 */ 1341 public int numRunning; 1342 1343 /** 1344 * Last time task was run. For sorting. 1345 * @hide 1346 */ 1347 public long lastActiveTime; 1348 1349 public RunningTaskInfo() { 1350 } 1351 1352 public int describeContents() { 1353 return 0; 1354 } 1355 1356 public void writeToParcel(Parcel dest, int flags) { 1357 dest.writeInt(id); 1358 dest.writeInt(stackId); 1359 ComponentName.writeToParcel(baseActivity, dest); 1360 ComponentName.writeToParcel(topActivity, dest); 1361 if (thumbnail != null) { 1362 dest.writeInt(1); 1363 thumbnail.writeToParcel(dest, 0); 1364 } else { 1365 dest.writeInt(0); 1366 } 1367 TextUtils.writeToParcel(description, dest, 1368 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1369 dest.writeInt(numActivities); 1370 dest.writeInt(numRunning); 1371 } 1372 1373 public void readFromParcel(Parcel source) { 1374 id = source.readInt(); 1375 stackId = source.readInt(); 1376 baseActivity = ComponentName.readFromParcel(source); 1377 topActivity = ComponentName.readFromParcel(source); 1378 if (source.readInt() != 0) { 1379 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1380 } else { 1381 thumbnail = null; 1382 } 1383 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1384 numActivities = source.readInt(); 1385 numRunning = source.readInt(); 1386 } 1387 1388 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1389 public RunningTaskInfo createFromParcel(Parcel source) { 1390 return new RunningTaskInfo(source); 1391 } 1392 public RunningTaskInfo[] newArray(int size) { 1393 return new RunningTaskInfo[size]; 1394 } 1395 }; 1396 1397 private RunningTaskInfo(Parcel source) { 1398 readFromParcel(source); 1399 } 1400 } 1401 1402 /** 1403 * Get the list of tasks associated with the calling application. 1404 * 1405 * @return The list of tasks associated with the application making this call. 1406 * @throws SecurityException 1407 */ 1408 public List<ActivityManager.AppTask> getAppTasks() { 1409 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1410 List<IAppTask> appTasks; 1411 try { 1412 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1413 } catch (RemoteException e) { 1414 // System dead, we will be dead too soon! 1415 return null; 1416 } 1417 int numAppTasks = appTasks.size(); 1418 for (int i = 0; i < numAppTasks; i++) { 1419 tasks.add(new AppTask(appTasks.get(i))); 1420 } 1421 return tasks; 1422 } 1423 1424 /** 1425 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1426 * with {@link #addAppTask}. 1427 */ 1428 public Size getAppTaskThumbnailSize() { 1429 synchronized (this) { 1430 ensureAppTaskThumbnailSizeLocked(); 1431 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1432 } 1433 } 1434 1435 private void ensureAppTaskThumbnailSizeLocked() { 1436 if (mAppTaskThumbnailSize == null) { 1437 try { 1438 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1439 } catch (RemoteException e) { 1440 throw new IllegalStateException("System dead?", e); 1441 } 1442 } 1443 } 1444 1445 /** 1446 * Add a new {@link AppTask} for the calling application. This will create a new 1447 * recents entry that is added to the <b>end</b> of all existing recents. 1448 * 1449 * @param activity The activity that is adding the entry. This is used to help determine 1450 * the context that the new recents entry will be in. 1451 * @param intent The Intent that describes the recents entry. This is the same Intent that 1452 * you would have used to launch the activity for it. In generally you will want to set 1453 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1454 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1455 * entry will exist without an activity, so it doesn't make sense to not retain it when 1456 * its activity disappears. The given Intent here also must have an explicit ComponentName 1457 * set on it. 1458 * @param description Optional additional description information. 1459 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1460 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1461 * recreated in your process, probably in a way you don't like, before the recents entry 1462 * is added. 1463 * 1464 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1465 * most likely cause of failure is that there is no more room for more tasks for your app. 1466 */ 1467 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1468 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1469 Point size; 1470 synchronized (this) { 1471 ensureAppTaskThumbnailSizeLocked(); 1472 size = mAppTaskThumbnailSize; 1473 } 1474 final int tw = thumbnail.getWidth(); 1475 final int th = thumbnail.getHeight(); 1476 if (tw != size.x || th != size.y) { 1477 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1478 1479 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1480 float scale; 1481 float dx = 0, dy = 0; 1482 if (tw * size.x > size.y * th) { 1483 scale = (float) size.x / (float) th; 1484 dx = (size.y - tw * scale) * 0.5f; 1485 } else { 1486 scale = (float) size.y / (float) tw; 1487 dy = (size.x - th * scale) * 0.5f; 1488 } 1489 Matrix matrix = new Matrix(); 1490 matrix.setScale(scale, scale); 1491 matrix.postTranslate((int) (dx + 0.5f), 0); 1492 1493 Canvas canvas = new Canvas(bm); 1494 canvas.drawBitmap(thumbnail, matrix, null); 1495 canvas.setBitmap(null); 1496 1497 thumbnail = bm; 1498 } 1499 if (description == null) { 1500 description = new TaskDescription(); 1501 } 1502 try { 1503 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1504 intent, description, thumbnail); 1505 } catch (RemoteException e) { 1506 throw new IllegalStateException("System dead?", e); 1507 } 1508 } 1509 1510 /** 1511 * Return a list of the tasks that are currently running, with 1512 * the most recent being first and older ones after in order. Note that 1513 * "running" does not mean any of the task's code is currently loaded or 1514 * activity -- the task may have been frozen by the system, so that it 1515 * can be restarted in its previous state when next brought to the 1516 * foreground. 1517 * 1518 * <p><b>Note: this method is only intended for debugging and presenting 1519 * task management user interfaces</b>. This should never be used for 1520 * core logic in an application, such as deciding between different 1521 * behaviors based on the information found here. Such uses are 1522 * <em>not</em> supported, and will likely break in the future. For 1523 * example, if multiple applications can be actively running at the 1524 * same time, assumptions made about the meaning of the data here for 1525 * purposes of control flow will be incorrect.</p> 1526 * 1527 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1528 * is no longer available to third party 1529 * applications: the introduction of document-centric recents means 1530 * it can leak person information to the caller. For backwards compatibility, 1531 * it will still retu rn a small subset of its data: at least the caller's 1532 * own tasks, and possibly some other tasks 1533 * such as home that are known to not be sensitive. 1534 * 1535 * @param maxNum The maximum number of entries to return in the list. The 1536 * actual number returned may be smaller, depending on how many tasks the 1537 * user has started. 1538 * 1539 * @return Returns a list of RunningTaskInfo records describing each of 1540 * the running tasks. 1541 */ 1542 @Deprecated 1543 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1544 throws SecurityException { 1545 try { 1546 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1547 } catch (RemoteException e) { 1548 // System dead, we will be dead too soon! 1549 return null; 1550 } 1551 } 1552 1553 /** 1554 * Completely remove the given task. 1555 * 1556 * @param taskId Identifier of the task to be removed. 1557 * @return Returns true if the given task was found and removed. 1558 * 1559 * @hide 1560 */ 1561 public boolean removeTask(int taskId) throws SecurityException { 1562 try { 1563 return ActivityManagerNative.getDefault().removeTask(taskId); 1564 } catch (RemoteException e) { 1565 // System dead, we will be dead too soon! 1566 return false; 1567 } 1568 } 1569 1570 /** 1571 * Metadata related to the {@link TaskThumbnail}. 1572 * 1573 * @hide 1574 */ 1575 public static class TaskThumbnailInfo implements Parcelable { 1576 /** @hide */ 1577 public static final String ATTR_TASK_THUMBNAILINFO_PREFIX = "task_thumbnailinfo_"; 1578 private static final String ATTR_TASK_WIDTH = 1579 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_width"; 1580 private static final String ATTR_TASK_HEIGHT = 1581 ATTR_TASK_THUMBNAILINFO_PREFIX + "task_height"; 1582 private static final String ATTR_SCREEN_ORIENTATION = 1583 ATTR_TASK_THUMBNAILINFO_PREFIX + "screen_orientation"; 1584 1585 public int taskWidth; 1586 public int taskHeight; 1587 public int screenOrientation; 1588 1589 public TaskThumbnailInfo() { 1590 // Do nothing 1591 } 1592 1593 private TaskThumbnailInfo(Parcel source) { 1594 readFromParcel(source); 1595 } 1596 1597 /** 1598 * Resets this info state to the initial state. 1599 * @hide 1600 */ 1601 public void reset() { 1602 taskWidth = 0; 1603 taskHeight = 0; 1604 screenOrientation = 0; 1605 } 1606 1607 /** @hide */ 1608 public void saveToXml(XmlSerializer out) throws IOException { 1609 out.attribute(null, ATTR_TASK_WIDTH, Integer.toString(taskWidth)); 1610 out.attribute(null, ATTR_TASK_HEIGHT, Integer.toString(taskHeight)); 1611 out.attribute(null, ATTR_SCREEN_ORIENTATION, Integer.toString(screenOrientation)); 1612 } 1613 1614 /** @hide */ 1615 public void restoreFromXml(String attrName, String attrValue) { 1616 if (ATTR_TASK_WIDTH.equals(attrName)) { 1617 taskWidth = Integer.parseInt(attrValue); 1618 } else if (ATTR_TASK_HEIGHT.equals(attrName)) { 1619 taskHeight = Integer.parseInt(attrValue); 1620 } else if (ATTR_SCREEN_ORIENTATION.equals(attrName)) { 1621 screenOrientation = Integer.parseInt(attrValue); 1622 } 1623 } 1624 1625 public int describeContents() { 1626 return 0; 1627 } 1628 1629 public void writeToParcel(Parcel dest, int flags) { 1630 dest.writeInt(taskWidth); 1631 dest.writeInt(taskHeight); 1632 dest.writeInt(screenOrientation); 1633 } 1634 1635 public void readFromParcel(Parcel source) { 1636 taskWidth = source.readInt(); 1637 taskHeight = source.readInt(); 1638 screenOrientation = source.readInt(); 1639 } 1640 1641 public static final Creator<TaskThumbnailInfo> CREATOR = new Creator<TaskThumbnailInfo>() { 1642 public TaskThumbnailInfo createFromParcel(Parcel source) { 1643 return new TaskThumbnailInfo(source); 1644 } 1645 public TaskThumbnailInfo[] newArray(int size) { 1646 return new TaskThumbnailInfo[size]; 1647 } 1648 }; 1649 } 1650 1651 /** @hide */ 1652 public static class TaskThumbnail implements Parcelable { 1653 public Bitmap mainThumbnail; 1654 public ParcelFileDescriptor thumbnailFileDescriptor; 1655 public TaskThumbnailInfo thumbnailInfo; 1656 1657 public TaskThumbnail() { 1658 } 1659 1660 private TaskThumbnail(Parcel source) { 1661 readFromParcel(source); 1662 } 1663 1664 public int describeContents() { 1665 if (thumbnailFileDescriptor != null) { 1666 return thumbnailFileDescriptor.describeContents(); 1667 } 1668 return 0; 1669 } 1670 1671 public void writeToParcel(Parcel dest, int flags) { 1672 if (mainThumbnail != null) { 1673 dest.writeInt(1); 1674 mainThumbnail.writeToParcel(dest, flags); 1675 } else { 1676 dest.writeInt(0); 1677 } 1678 if (thumbnailFileDescriptor != null) { 1679 dest.writeInt(1); 1680 thumbnailFileDescriptor.writeToParcel(dest, flags); 1681 } else { 1682 dest.writeInt(0); 1683 } 1684 if (thumbnailInfo != null) { 1685 dest.writeInt(1); 1686 thumbnailInfo.writeToParcel(dest, flags); 1687 } else { 1688 dest.writeInt(0); 1689 } 1690 } 1691 1692 public void readFromParcel(Parcel source) { 1693 if (source.readInt() != 0) { 1694 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1695 } else { 1696 mainThumbnail = null; 1697 } 1698 if (source.readInt() != 0) { 1699 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1700 } else { 1701 thumbnailFileDescriptor = null; 1702 } 1703 if (source.readInt() != 0) { 1704 thumbnailInfo = TaskThumbnailInfo.CREATOR.createFromParcel(source); 1705 } else { 1706 thumbnailInfo = null; 1707 } 1708 } 1709 1710 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1711 public TaskThumbnail createFromParcel(Parcel source) { 1712 return new TaskThumbnail(source); 1713 } 1714 public TaskThumbnail[] newArray(int size) { 1715 return new TaskThumbnail[size]; 1716 } 1717 }; 1718 } 1719 1720 /** @hide */ 1721 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1722 try { 1723 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1724 } catch (RemoteException e) { 1725 // System dead, we will be dead too soon! 1726 return null; 1727 } 1728 } 1729 1730 /** @hide */ 1731 public boolean isInHomeStack(int taskId) { 1732 try { 1733 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1734 } catch (RemoteException e) { 1735 // System dead, we will be dead too soon! 1736 return false; 1737 } 1738 } 1739 1740 /** 1741 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1742 * activity along with the task, so it is positioned immediately behind 1743 * the task. 1744 */ 1745 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1746 1747 /** 1748 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1749 * user-instigated action, so the current activity will not receive a 1750 * hint that the user is leaving. 1751 */ 1752 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1753 1754 /** 1755 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1756 * with a null options argument. 1757 * 1758 * @param taskId The identifier of the task to be moved, as found in 1759 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1760 * @param flags Additional operational flags, 0 or more of 1761 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1762 */ 1763 public void moveTaskToFront(int taskId, int flags) { 1764 moveTaskToFront(taskId, flags, null); 1765 } 1766 1767 /** 1768 * Ask that the task associated with a given task ID be moved to the 1769 * front of the stack, so it is now visible to the user. Requires that 1770 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1771 * or a SecurityException will be thrown. 1772 * 1773 * @param taskId The identifier of the task to be moved, as found in 1774 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1775 * @param flags Additional operational flags, 0 or more of 1776 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1777 * @param options Additional options for the operation, either null or 1778 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1779 * Context.startActivity(Intent, Bundle)}. 1780 */ 1781 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1782 try { 1783 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1784 } catch (RemoteException e) { 1785 // System dead, we will be dead too soon! 1786 } 1787 } 1788 1789 /** 1790 * Information you can retrieve about a particular Service that is 1791 * currently running in the system. 1792 */ 1793 public static class RunningServiceInfo implements Parcelable { 1794 /** 1795 * The service component. 1796 */ 1797 public ComponentName service; 1798 1799 /** 1800 * If non-zero, this is the process the service is running in. 1801 */ 1802 public int pid; 1803 1804 /** 1805 * The UID that owns this service. 1806 */ 1807 public int uid; 1808 1809 /** 1810 * The name of the process this service runs in. 1811 */ 1812 public String process; 1813 1814 /** 1815 * Set to true if the service has asked to run as a foreground process. 1816 */ 1817 public boolean foreground; 1818 1819 /** 1820 * The time when the service was first made active, either by someone 1821 * starting or binding to it. This 1822 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1823 */ 1824 public long activeSince; 1825 1826 /** 1827 * Set to true if this service has been explicitly started. 1828 */ 1829 public boolean started; 1830 1831 /** 1832 * Number of clients connected to the service. 1833 */ 1834 public int clientCount; 1835 1836 /** 1837 * Number of times the service's process has crashed while the service 1838 * is running. 1839 */ 1840 public int crashCount; 1841 1842 /** 1843 * The time when there was last activity in the service (either 1844 * explicit requests to start it or clients binding to it). This 1845 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1846 */ 1847 public long lastActivityTime; 1848 1849 /** 1850 * If non-zero, this service is not currently running, but scheduled to 1851 * restart at the given time. 1852 */ 1853 public long restarting; 1854 1855 /** 1856 * Bit for {@link #flags}: set if this service has been 1857 * explicitly started. 1858 */ 1859 public static final int FLAG_STARTED = 1<<0; 1860 1861 /** 1862 * Bit for {@link #flags}: set if the service has asked to 1863 * run as a foreground process. 1864 */ 1865 public static final int FLAG_FOREGROUND = 1<<1; 1866 1867 /** 1868 * Bit for {@link #flags): set if the service is running in a 1869 * core system process. 1870 */ 1871 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1872 1873 /** 1874 * Bit for {@link #flags): set if the service is running in a 1875 * persistent process. 1876 */ 1877 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1878 1879 /** 1880 * Running flags. 1881 */ 1882 public int flags; 1883 1884 /** 1885 * For special services that are bound to by system code, this is 1886 * the package that holds the binding. 1887 */ 1888 public String clientPackage; 1889 1890 /** 1891 * For special services that are bound to by system code, this is 1892 * a string resource providing a user-visible label for who the 1893 * client is. 1894 */ 1895 public int clientLabel; 1896 1897 public RunningServiceInfo() { 1898 } 1899 1900 public int describeContents() { 1901 return 0; 1902 } 1903 1904 public void writeToParcel(Parcel dest, int flags) { 1905 ComponentName.writeToParcel(service, dest); 1906 dest.writeInt(pid); 1907 dest.writeInt(uid); 1908 dest.writeString(process); 1909 dest.writeInt(foreground ? 1 : 0); 1910 dest.writeLong(activeSince); 1911 dest.writeInt(started ? 1 : 0); 1912 dest.writeInt(clientCount); 1913 dest.writeInt(crashCount); 1914 dest.writeLong(lastActivityTime); 1915 dest.writeLong(restarting); 1916 dest.writeInt(this.flags); 1917 dest.writeString(clientPackage); 1918 dest.writeInt(clientLabel); 1919 } 1920 1921 public void readFromParcel(Parcel source) { 1922 service = ComponentName.readFromParcel(source); 1923 pid = source.readInt(); 1924 uid = source.readInt(); 1925 process = source.readString(); 1926 foreground = source.readInt() != 0; 1927 activeSince = source.readLong(); 1928 started = source.readInt() != 0; 1929 clientCount = source.readInt(); 1930 crashCount = source.readInt(); 1931 lastActivityTime = source.readLong(); 1932 restarting = source.readLong(); 1933 flags = source.readInt(); 1934 clientPackage = source.readString(); 1935 clientLabel = source.readInt(); 1936 } 1937 1938 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1939 public RunningServiceInfo createFromParcel(Parcel source) { 1940 return new RunningServiceInfo(source); 1941 } 1942 public RunningServiceInfo[] newArray(int size) { 1943 return new RunningServiceInfo[size]; 1944 } 1945 }; 1946 1947 private RunningServiceInfo(Parcel source) { 1948 readFromParcel(source); 1949 } 1950 } 1951 1952 /** 1953 * Return a list of the services that are currently running. 1954 * 1955 * <p><b>Note: this method is only intended for debugging or implementing 1956 * service management type user interfaces.</b></p> 1957 * 1958 * @param maxNum The maximum number of entries to return in the list. The 1959 * actual number returned may be smaller, depending on how many services 1960 * are running. 1961 * 1962 * @return Returns a list of RunningServiceInfo records describing each of 1963 * the running tasks. 1964 */ 1965 public List<RunningServiceInfo> getRunningServices(int maxNum) 1966 throws SecurityException { 1967 try { 1968 return ActivityManagerNative.getDefault() 1969 .getServices(maxNum, 0); 1970 } catch (RemoteException e) { 1971 // System dead, we will be dead too soon! 1972 return null; 1973 } 1974 } 1975 1976 /** 1977 * Returns a PendingIntent you can start to show a control panel for the 1978 * given running service. If the service does not have a control panel, 1979 * null is returned. 1980 */ 1981 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1982 throws SecurityException { 1983 try { 1984 return ActivityManagerNative.getDefault() 1985 .getRunningServiceControlPanel(service); 1986 } catch (RemoteException e) { 1987 // System dead, we will be dead too soon! 1988 return null; 1989 } 1990 } 1991 1992 /** 1993 * Information you can retrieve about the available memory through 1994 * {@link ActivityManager#getMemoryInfo}. 1995 */ 1996 public static class MemoryInfo implements Parcelable { 1997 /** 1998 * The available memory on the system. This number should not 1999 * be considered absolute: due to the nature of the kernel, a significant 2000 * portion of this memory is actually in use and needed for the overall 2001 * system to run well. 2002 */ 2003 public long availMem; 2004 2005 /** 2006 * The total memory accessible by the kernel. This is basically the 2007 * RAM size of the device, not including below-kernel fixed allocations 2008 * like DMA buffers, RAM for the baseband CPU, etc. 2009 */ 2010 public long totalMem; 2011 2012 /** 2013 * The threshold of {@link #availMem} at which we consider memory to be 2014 * low and start killing background services and other non-extraneous 2015 * processes. 2016 */ 2017 public long threshold; 2018 2019 /** 2020 * Set to true if the system considers itself to currently be in a low 2021 * memory situation. 2022 */ 2023 public boolean lowMemory; 2024 2025 /** @hide */ 2026 public long hiddenAppThreshold; 2027 /** @hide */ 2028 public long secondaryServerThreshold; 2029 /** @hide */ 2030 public long visibleAppThreshold; 2031 /** @hide */ 2032 public long foregroundAppThreshold; 2033 2034 public MemoryInfo() { 2035 } 2036 2037 public int describeContents() { 2038 return 0; 2039 } 2040 2041 public void writeToParcel(Parcel dest, int flags) { 2042 dest.writeLong(availMem); 2043 dest.writeLong(totalMem); 2044 dest.writeLong(threshold); 2045 dest.writeInt(lowMemory ? 1 : 0); 2046 dest.writeLong(hiddenAppThreshold); 2047 dest.writeLong(secondaryServerThreshold); 2048 dest.writeLong(visibleAppThreshold); 2049 dest.writeLong(foregroundAppThreshold); 2050 } 2051 2052 public void readFromParcel(Parcel source) { 2053 availMem = source.readLong(); 2054 totalMem = source.readLong(); 2055 threshold = source.readLong(); 2056 lowMemory = source.readInt() != 0; 2057 hiddenAppThreshold = source.readLong(); 2058 secondaryServerThreshold = source.readLong(); 2059 visibleAppThreshold = source.readLong(); 2060 foregroundAppThreshold = source.readLong(); 2061 } 2062 2063 public static final Creator<MemoryInfo> CREATOR 2064 = new Creator<MemoryInfo>() { 2065 public MemoryInfo createFromParcel(Parcel source) { 2066 return new MemoryInfo(source); 2067 } 2068 public MemoryInfo[] newArray(int size) { 2069 return new MemoryInfo[size]; 2070 } 2071 }; 2072 2073 private MemoryInfo(Parcel source) { 2074 readFromParcel(source); 2075 } 2076 } 2077 2078 /** 2079 * Return general information about the memory state of the system. This 2080 * can be used to help decide how to manage your own memory, though note 2081 * that polling is not recommended and 2082 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2083 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 2084 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 2085 * level of your process as needed, which gives a better hint for how to 2086 * manage its memory. 2087 */ 2088 public void getMemoryInfo(MemoryInfo outInfo) { 2089 try { 2090 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 2091 } catch (RemoteException e) { 2092 } 2093 } 2094 2095 /** 2096 * Information you can retrieve about an ActivityStack in the system. 2097 * @hide 2098 */ 2099 public static class StackInfo implements Parcelable { 2100 public int stackId; 2101 public Rect bounds = new Rect(); 2102 public int[] taskIds; 2103 public String[] taskNames; 2104 public Rect[] taskBounds; 2105 public int displayId; 2106 2107 @Override 2108 public int describeContents() { 2109 return 0; 2110 } 2111 2112 @Override 2113 public void writeToParcel(Parcel dest, int flags) { 2114 dest.writeInt(stackId); 2115 dest.writeInt(bounds.left); 2116 dest.writeInt(bounds.top); 2117 dest.writeInt(bounds.right); 2118 dest.writeInt(bounds.bottom); 2119 dest.writeIntArray(taskIds); 2120 dest.writeStringArray(taskNames); 2121 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 2122 dest.writeInt(boundsCount); 2123 for (int i = 0; i < boundsCount; i++) { 2124 dest.writeInt(taskBounds[i].left); 2125 dest.writeInt(taskBounds[i].top); 2126 dest.writeInt(taskBounds[i].right); 2127 dest.writeInt(taskBounds[i].bottom); 2128 } 2129 dest.writeInt(displayId); 2130 } 2131 2132 public void readFromParcel(Parcel source) { 2133 stackId = source.readInt(); 2134 bounds = new Rect( 2135 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2136 taskIds = source.createIntArray(); 2137 taskNames = source.createStringArray(); 2138 final int boundsCount = source.readInt(); 2139 if (boundsCount > 0) { 2140 taskBounds = new Rect[boundsCount]; 2141 for (int i = 0; i < boundsCount; i++) { 2142 taskBounds[i] = new Rect(); 2143 taskBounds[i].set( 2144 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2145 } 2146 } else { 2147 taskBounds = null; 2148 } 2149 displayId = source.readInt(); 2150 } 2151 2152 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2153 @Override 2154 public StackInfo createFromParcel(Parcel source) { 2155 return new StackInfo(source); 2156 } 2157 @Override 2158 public StackInfo[] newArray(int size) { 2159 return new StackInfo[size]; 2160 } 2161 }; 2162 2163 public StackInfo() { 2164 } 2165 2166 private StackInfo(Parcel source) { 2167 readFromParcel(source); 2168 } 2169 2170 public String toString(String prefix) { 2171 StringBuilder sb = new StringBuilder(256); 2172 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2173 sb.append(" bounds="); sb.append(bounds.toShortString()); 2174 sb.append(" displayId="); sb.append(displayId); 2175 sb.append("\n"); 2176 prefix = prefix + " "; 2177 for (int i = 0; i < taskIds.length; ++i) { 2178 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2179 sb.append(": "); sb.append(taskNames[i]); 2180 if (taskBounds != null) { 2181 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2182 } 2183 sb.append("\n"); 2184 } 2185 return sb.toString(); 2186 } 2187 2188 @Override 2189 public String toString() { 2190 return toString(""); 2191 } 2192 } 2193 2194 /** 2195 * @hide 2196 */ 2197 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2198 try { 2199 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2200 observer, UserHandle.myUserId()); 2201 } catch (RemoteException e) { 2202 return false; 2203 } 2204 } 2205 2206 /** 2207 * Permits an application to erase its own data from disk. This is equivalent to 2208 * the user choosing to clear the app's data from within the device settings UI. It 2209 * erases all dynamic data associated with the app -- its private data and data in its 2210 * private area on external storage -- but does not remove the installed application 2211 * itself, nor any OBB files. 2212 * 2213 * @return {@code true} if the application successfully requested that the application's 2214 * data be erased; {@code false} otherwise. 2215 */ 2216 public boolean clearApplicationUserData() { 2217 return clearApplicationUserData(mContext.getPackageName(), null); 2218 } 2219 2220 /** 2221 * Information you can retrieve about any processes that are in an error condition. 2222 */ 2223 public static class ProcessErrorStateInfo implements Parcelable { 2224 /** 2225 * Condition codes 2226 */ 2227 public static final int NO_ERROR = 0; 2228 public static final int CRASHED = 1; 2229 public static final int NOT_RESPONDING = 2; 2230 2231 /** 2232 * The condition that the process is in. 2233 */ 2234 public int condition; 2235 2236 /** 2237 * The process name in which the crash or error occurred. 2238 */ 2239 public String processName; 2240 2241 /** 2242 * The pid of this process; 0 if none 2243 */ 2244 public int pid; 2245 2246 /** 2247 * The kernel user-ID that has been assigned to this process; 2248 * currently this is not a unique ID (multiple applications can have 2249 * the same uid). 2250 */ 2251 public int uid; 2252 2253 /** 2254 * The activity name associated with the error, if known. May be null. 2255 */ 2256 public String tag; 2257 2258 /** 2259 * A short message describing the error condition. 2260 */ 2261 public String shortMsg; 2262 2263 /** 2264 * A long message describing the error condition. 2265 */ 2266 public String longMsg; 2267 2268 /** 2269 * The stack trace where the error originated. May be null. 2270 */ 2271 public String stackTrace; 2272 2273 /** 2274 * to be deprecated: This value will always be null. 2275 */ 2276 public byte[] crashData = null; 2277 2278 public ProcessErrorStateInfo() { 2279 } 2280 2281 @Override 2282 public int describeContents() { 2283 return 0; 2284 } 2285 2286 @Override 2287 public void writeToParcel(Parcel dest, int flags) { 2288 dest.writeInt(condition); 2289 dest.writeString(processName); 2290 dest.writeInt(pid); 2291 dest.writeInt(uid); 2292 dest.writeString(tag); 2293 dest.writeString(shortMsg); 2294 dest.writeString(longMsg); 2295 dest.writeString(stackTrace); 2296 } 2297 2298 public void readFromParcel(Parcel source) { 2299 condition = source.readInt(); 2300 processName = source.readString(); 2301 pid = source.readInt(); 2302 uid = source.readInt(); 2303 tag = source.readString(); 2304 shortMsg = source.readString(); 2305 longMsg = source.readString(); 2306 stackTrace = source.readString(); 2307 } 2308 2309 public static final Creator<ProcessErrorStateInfo> CREATOR = 2310 new Creator<ProcessErrorStateInfo>() { 2311 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2312 return new ProcessErrorStateInfo(source); 2313 } 2314 public ProcessErrorStateInfo[] newArray(int size) { 2315 return new ProcessErrorStateInfo[size]; 2316 } 2317 }; 2318 2319 private ProcessErrorStateInfo(Parcel source) { 2320 readFromParcel(source); 2321 } 2322 } 2323 2324 /** 2325 * Returns a list of any processes that are currently in an error condition. The result 2326 * will be null if all processes are running properly at this time. 2327 * 2328 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2329 * current error conditions (it will not return an empty list). This list ordering is not 2330 * specified. 2331 */ 2332 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2333 try { 2334 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2335 } catch (RemoteException e) { 2336 return null; 2337 } 2338 } 2339 2340 /** 2341 * Information you can retrieve about a running process. 2342 */ 2343 public static class RunningAppProcessInfo implements Parcelable { 2344 /** 2345 * The name of the process that this object is associated with 2346 */ 2347 public String processName; 2348 2349 /** 2350 * The pid of this process; 0 if none 2351 */ 2352 public int pid; 2353 2354 /** 2355 * The user id of this process. 2356 */ 2357 public int uid; 2358 2359 /** 2360 * All packages that have been loaded into the process. 2361 */ 2362 public String pkgList[]; 2363 2364 /** 2365 * Constant for {@link #flags}: this is an app that is unable to 2366 * correctly save its state when going to the background, 2367 * so it can not be killed while in the background. 2368 * @hide 2369 */ 2370 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2371 2372 /** 2373 * Constant for {@link #flags}: this process is associated with a 2374 * persistent system app. 2375 * @hide 2376 */ 2377 public static final int FLAG_PERSISTENT = 1<<1; 2378 2379 /** 2380 * Constant for {@link #flags}: this process is associated with a 2381 * persistent system app. 2382 * @hide 2383 */ 2384 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2385 2386 /** 2387 * Flags of information. May be any of 2388 * {@link #FLAG_CANT_SAVE_STATE}. 2389 * @hide 2390 */ 2391 public int flags; 2392 2393 /** 2394 * Last memory trim level reported to the process: corresponds to 2395 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2396 * ComponentCallbacks2.onTrimMemory(int)}. 2397 */ 2398 public int lastTrimLevel; 2399 2400 /** 2401 * Constant for {@link #importance}: This process is running the 2402 * foreground UI; that is, it is the thing currently at the top of the screen 2403 * that the user is interacting with. 2404 */ 2405 public static final int IMPORTANCE_FOREGROUND = 100; 2406 2407 /** 2408 * Constant for {@link #importance}: This process is running a foreground 2409 * service, for example to perform music playback even while the user is 2410 * not immediately in the app. This generally indicates that the process 2411 * is doing something the user actively cares about. 2412 */ 2413 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2414 2415 /** 2416 * Constant for {@link #importance}: This process is running the foreground 2417 * UI, but the device is asleep so it is not visible to the user. This means 2418 * the user is not really aware of the process, because they can not see or 2419 * interact with it, but it is quite important because it what they expect to 2420 * return to once unlocking the device. 2421 */ 2422 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2423 2424 /** 2425 * Constant for {@link #importance}: This process is running something 2426 * that is actively visible to the user, though not in the immediate 2427 * foreground. This may be running a window that is behind the current 2428 * foreground (so paused and with its state saved, not interacting with 2429 * the user, but visible to them to some degree); it may also be running 2430 * other services under the system's control that it inconsiders important. 2431 */ 2432 public static final int IMPORTANCE_VISIBLE = 200; 2433 2434 /** 2435 * Constant for {@link #importance}: This process is not something the user 2436 * is directly aware of, but is otherwise perceptable to them to some degree. 2437 */ 2438 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2439 2440 /** 2441 * Constant for {@link #importance}: This process is running an 2442 * application that can not save its state, and thus can't be killed 2443 * while in the background. 2444 * @hide 2445 */ 2446 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2447 2448 /** 2449 * Constant for {@link #importance}: This process is contains services 2450 * that should remain running. These are background services apps have 2451 * started, not something the user is aware of, so they may be killed by 2452 * the system relatively freely (though it is generally desired that they 2453 * stay running as long as they want to). 2454 */ 2455 public static final int IMPORTANCE_SERVICE = 300; 2456 2457 /** 2458 * Constant for {@link #importance}: This process process contains 2459 * background code that is expendable. 2460 */ 2461 public static final int IMPORTANCE_BACKGROUND = 400; 2462 2463 /** 2464 * Constant for {@link #importance}: This process is empty of any 2465 * actively running code. 2466 */ 2467 public static final int IMPORTANCE_EMPTY = 500; 2468 2469 /** 2470 * Constant for {@link #importance}: This process does not exist. 2471 */ 2472 public static final int IMPORTANCE_GONE = 1000; 2473 2474 /** @hide */ 2475 public static int procStateToImportance(int procState) { 2476 if (procState == PROCESS_STATE_NONEXISTENT) { 2477 return IMPORTANCE_GONE; 2478 } else if (procState >= PROCESS_STATE_HOME) { 2479 return IMPORTANCE_BACKGROUND; 2480 } else if (procState >= PROCESS_STATE_SERVICE) { 2481 return IMPORTANCE_SERVICE; 2482 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2483 return IMPORTANCE_CANT_SAVE_STATE; 2484 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2485 return IMPORTANCE_PERCEPTIBLE; 2486 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2487 return IMPORTANCE_VISIBLE; 2488 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2489 return IMPORTANCE_TOP_SLEEPING; 2490 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2491 return IMPORTANCE_FOREGROUND_SERVICE; 2492 } else { 2493 return IMPORTANCE_FOREGROUND; 2494 } 2495 } 2496 2497 /** 2498 * The relative importance level that the system places on this 2499 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2500 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2501 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2502 * constants are numbered so that "more important" values are always 2503 * smaller than "less important" values. 2504 */ 2505 public int importance; 2506 2507 /** 2508 * An additional ordering within a particular {@link #importance} 2509 * category, providing finer-grained information about the relative 2510 * utility of processes within a category. This number means nothing 2511 * except that a smaller values are more recently used (and thus 2512 * more important). Currently an LRU value is only maintained for 2513 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2514 * be maintained in the future. 2515 */ 2516 public int lru; 2517 2518 /** 2519 * Constant for {@link #importanceReasonCode}: nothing special has 2520 * been specified for the reason for this level. 2521 */ 2522 public static final int REASON_UNKNOWN = 0; 2523 2524 /** 2525 * Constant for {@link #importanceReasonCode}: one of the application's 2526 * content providers is being used by another process. The pid of 2527 * the client process is in {@link #importanceReasonPid} and the 2528 * target provider in this process is in 2529 * {@link #importanceReasonComponent}. 2530 */ 2531 public static final int REASON_PROVIDER_IN_USE = 1; 2532 2533 /** 2534 * Constant for {@link #importanceReasonCode}: one of the application's 2535 * content providers is being used by another process. The pid of 2536 * the client process is in {@link #importanceReasonPid} and the 2537 * target provider in this process is in 2538 * {@link #importanceReasonComponent}. 2539 */ 2540 public static final int REASON_SERVICE_IN_USE = 2; 2541 2542 /** 2543 * The reason for {@link #importance}, if any. 2544 */ 2545 public int importanceReasonCode; 2546 2547 /** 2548 * For the specified values of {@link #importanceReasonCode}, this 2549 * is the process ID of the other process that is a client of this 2550 * process. This will be 0 if no other process is using this one. 2551 */ 2552 public int importanceReasonPid; 2553 2554 /** 2555 * For the specified values of {@link #importanceReasonCode}, this 2556 * is the name of the component that is being used in this process. 2557 */ 2558 public ComponentName importanceReasonComponent; 2559 2560 /** 2561 * When {@link #importanceReasonPid} is non-0, this is the importance 2562 * of the other pid. @hide 2563 */ 2564 public int importanceReasonImportance; 2565 2566 /** 2567 * Current process state, as per PROCESS_STATE_* constants. 2568 * @hide 2569 */ 2570 public int processState; 2571 2572 public RunningAppProcessInfo() { 2573 importance = IMPORTANCE_FOREGROUND; 2574 importanceReasonCode = REASON_UNKNOWN; 2575 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2576 } 2577 2578 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2579 processName = pProcessName; 2580 pid = pPid; 2581 pkgList = pArr; 2582 } 2583 2584 public int describeContents() { 2585 return 0; 2586 } 2587 2588 public void writeToParcel(Parcel dest, int flags) { 2589 dest.writeString(processName); 2590 dest.writeInt(pid); 2591 dest.writeInt(uid); 2592 dest.writeStringArray(pkgList); 2593 dest.writeInt(this.flags); 2594 dest.writeInt(lastTrimLevel); 2595 dest.writeInt(importance); 2596 dest.writeInt(lru); 2597 dest.writeInt(importanceReasonCode); 2598 dest.writeInt(importanceReasonPid); 2599 ComponentName.writeToParcel(importanceReasonComponent, dest); 2600 dest.writeInt(importanceReasonImportance); 2601 dest.writeInt(processState); 2602 } 2603 2604 public void readFromParcel(Parcel source) { 2605 processName = source.readString(); 2606 pid = source.readInt(); 2607 uid = source.readInt(); 2608 pkgList = source.readStringArray(); 2609 flags = source.readInt(); 2610 lastTrimLevel = source.readInt(); 2611 importance = source.readInt(); 2612 lru = source.readInt(); 2613 importanceReasonCode = source.readInt(); 2614 importanceReasonPid = source.readInt(); 2615 importanceReasonComponent = ComponentName.readFromParcel(source); 2616 importanceReasonImportance = source.readInt(); 2617 processState = source.readInt(); 2618 } 2619 2620 public static final Creator<RunningAppProcessInfo> CREATOR = 2621 new Creator<RunningAppProcessInfo>() { 2622 public RunningAppProcessInfo createFromParcel(Parcel source) { 2623 return new RunningAppProcessInfo(source); 2624 } 2625 public RunningAppProcessInfo[] newArray(int size) { 2626 return new RunningAppProcessInfo[size]; 2627 } 2628 }; 2629 2630 private RunningAppProcessInfo(Parcel source) { 2631 readFromParcel(source); 2632 } 2633 } 2634 2635 /** 2636 * Returns a list of application processes installed on external media 2637 * that are running on the device. 2638 * 2639 * <p><b>Note: this method is only intended for debugging or building 2640 * a user-facing process management UI.</b></p> 2641 * 2642 * @return Returns a list of ApplicationInfo records, or null if none 2643 * This list ordering is not specified. 2644 * @hide 2645 */ 2646 public List<ApplicationInfo> getRunningExternalApplications() { 2647 try { 2648 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2649 } catch (RemoteException e) { 2650 return null; 2651 } 2652 } 2653 2654 /** 2655 * Sets the memory trim mode for a process and schedules a memory trim operation. 2656 * 2657 * <p><b>Note: this method is only intended for testing framework.</b></p> 2658 * 2659 * @return Returns true if successful. 2660 * @hide 2661 */ 2662 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2663 try { 2664 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2665 level); 2666 } catch (RemoteException e) { 2667 return false; 2668 } 2669 } 2670 2671 /** 2672 * Returns a list of application processes that are running on the device. 2673 * 2674 * <p><b>Note: this method is only intended for debugging or building 2675 * a user-facing process management UI.</b></p> 2676 * 2677 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2678 * running processes (it will not return an empty list). This list ordering is not 2679 * specified. 2680 */ 2681 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2682 try { 2683 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2684 } catch (RemoteException e) { 2685 return null; 2686 } 2687 } 2688 2689 /** 2690 * Return the importance of a given package name, based on the processes that are 2691 * currently running. The return value is one of the importance constants defined 2692 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2693 * processes that this package has code running inside of. If there are no processes 2694 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2695 * @hide 2696 */ 2697 @SystemApi 2698 public int getPackageImportance(String packageName) { 2699 try { 2700 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2701 mContext.getOpPackageName()); 2702 return RunningAppProcessInfo.procStateToImportance(procState); 2703 } catch (RemoteException e) { 2704 return RunningAppProcessInfo.IMPORTANCE_GONE; 2705 } 2706 } 2707 2708 /** 2709 * Return global memory state information for the calling process. This 2710 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2711 * only fields that will be filled in are 2712 * {@link RunningAppProcessInfo#pid}, 2713 * {@link RunningAppProcessInfo#uid}, 2714 * {@link RunningAppProcessInfo#lastTrimLevel}, 2715 * {@link RunningAppProcessInfo#importance}, 2716 * {@link RunningAppProcessInfo#lru}, and 2717 * {@link RunningAppProcessInfo#importanceReasonCode}. 2718 */ 2719 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2720 try { 2721 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2722 } catch (RemoteException e) { 2723 } 2724 } 2725 2726 /** 2727 * Return information about the memory usage of one or more processes. 2728 * 2729 * <p><b>Note: this method is only intended for debugging or building 2730 * a user-facing process management UI.</b></p> 2731 * 2732 * @param pids The pids of the processes whose memory usage is to be 2733 * retrieved. 2734 * @return Returns an array of memory information, one for each 2735 * requested pid. 2736 */ 2737 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2738 try { 2739 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2740 } catch (RemoteException e) { 2741 return null; 2742 } 2743 } 2744 2745 /** 2746 * @deprecated This is now just a wrapper for 2747 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2748 * is no longer available to applications because it allows them to 2749 * break other applications by removing their alarms, stopping their 2750 * services, etc. 2751 */ 2752 @Deprecated 2753 public void restartPackage(String packageName) { 2754 killBackgroundProcesses(packageName); 2755 } 2756 2757 /** 2758 * Have the system immediately kill all background processes associated 2759 * with the given package. This is the same as the kernel killing those 2760 * processes to reclaim memory; the system will take care of restarting 2761 * these processes in the future as needed. 2762 * 2763 * <p>You must hold the permission 2764 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2765 * call this method. 2766 * 2767 * @param packageName The name of the package whose processes are to 2768 * be killed. 2769 */ 2770 public void killBackgroundProcesses(String packageName) { 2771 try { 2772 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2773 UserHandle.myUserId()); 2774 } catch (RemoteException e) { 2775 } 2776 } 2777 2778 /** 2779 * Kills the specified UID. 2780 * @param uid The UID to kill. 2781 * @param reason The reason for the kill. 2782 * 2783 * @hide 2784 */ 2785 @RequiresPermission(Manifest.permission.KILL_UID) 2786 public void killUid(int uid, String reason) { 2787 try { 2788 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2789 UserHandle.getUserId(uid), reason); 2790 } catch (RemoteException e) { 2791 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2792 } 2793 } 2794 2795 /** 2796 * Have the system perform a force stop of everything associated with 2797 * the given application package. All processes that share its uid 2798 * will be killed, all services it has running stopped, all activities 2799 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2800 * broadcast will be sent, so that any of its registered alarms can 2801 * be stopped, notifications removed, etc. 2802 * 2803 * <p>You must hold the permission 2804 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2805 * call this method. 2806 * 2807 * @param packageName The name of the package to be stopped. 2808 * @param userId The user for which the running package is to be stopped. 2809 * 2810 * @hide This is not available to third party applications due to 2811 * it allowing them to break other applications by stopping their 2812 * services, removing their alarms, etc. 2813 */ 2814 public void forceStopPackageAsUser(String packageName, int userId) { 2815 try { 2816 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2817 } catch (RemoteException e) { 2818 } 2819 } 2820 2821 /** 2822 * @see #forceStopPackageAsUser(String, int) 2823 * @hide 2824 */ 2825 public void forceStopPackage(String packageName) { 2826 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2827 } 2828 2829 /** 2830 * Get the device configuration attributes. 2831 */ 2832 public ConfigurationInfo getDeviceConfigurationInfo() { 2833 try { 2834 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2835 } catch (RemoteException e) { 2836 } 2837 return null; 2838 } 2839 2840 /** 2841 * Get the preferred density of icons for the launcher. This is used when 2842 * custom drawables are created (e.g., for shortcuts). 2843 * 2844 * @return density in terms of DPI 2845 */ 2846 public int getLauncherLargeIconDensity() { 2847 final Resources res = mContext.getResources(); 2848 final int density = res.getDisplayMetrics().densityDpi; 2849 final int sw = res.getConfiguration().smallestScreenWidthDp; 2850 2851 if (sw < 600) { 2852 // Smaller than approx 7" tablets, use the regular icon size. 2853 return density; 2854 } 2855 2856 switch (density) { 2857 case DisplayMetrics.DENSITY_LOW: 2858 return DisplayMetrics.DENSITY_MEDIUM; 2859 case DisplayMetrics.DENSITY_MEDIUM: 2860 return DisplayMetrics.DENSITY_HIGH; 2861 case DisplayMetrics.DENSITY_TV: 2862 return DisplayMetrics.DENSITY_XHIGH; 2863 case DisplayMetrics.DENSITY_HIGH: 2864 return DisplayMetrics.DENSITY_XHIGH; 2865 case DisplayMetrics.DENSITY_XHIGH: 2866 return DisplayMetrics.DENSITY_XXHIGH; 2867 case DisplayMetrics.DENSITY_XXHIGH: 2868 return DisplayMetrics.DENSITY_XHIGH * 2; 2869 default: 2870 // The density is some abnormal value. Return some other 2871 // abnormal value that is a reasonable scaling of it. 2872 return (int)((density*1.5f)+.5f); 2873 } 2874 } 2875 2876 /** 2877 * Get the preferred launcher icon size. This is used when custom drawables 2878 * are created (e.g., for shortcuts). 2879 * 2880 * @return dimensions of square icons in terms of pixels 2881 */ 2882 public int getLauncherLargeIconSize() { 2883 return getLauncherLargeIconSizeInner(mContext); 2884 } 2885 2886 static int getLauncherLargeIconSizeInner(Context context) { 2887 final Resources res = context.getResources(); 2888 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2889 final int sw = res.getConfiguration().smallestScreenWidthDp; 2890 2891 if (sw < 600) { 2892 // Smaller than approx 7" tablets, use the regular icon size. 2893 return size; 2894 } 2895 2896 final int density = res.getDisplayMetrics().densityDpi; 2897 2898 switch (density) { 2899 case DisplayMetrics.DENSITY_LOW: 2900 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2901 case DisplayMetrics.DENSITY_MEDIUM: 2902 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2903 case DisplayMetrics.DENSITY_TV: 2904 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2905 case DisplayMetrics.DENSITY_HIGH: 2906 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2907 case DisplayMetrics.DENSITY_XHIGH: 2908 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2909 case DisplayMetrics.DENSITY_XXHIGH: 2910 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2911 default: 2912 // The density is some abnormal value. Return some other 2913 // abnormal value that is a reasonable scaling of it. 2914 return (int)((size*1.5f) + .5f); 2915 } 2916 } 2917 2918 /** 2919 * Returns "true" if the user interface is currently being messed with 2920 * by a monkey. 2921 */ 2922 public static boolean isUserAMonkey() { 2923 try { 2924 return ActivityManagerNative.getDefault().isUserAMonkey(); 2925 } catch (RemoteException e) { 2926 } 2927 return false; 2928 } 2929 2930 /** 2931 * Returns "true" if device is running in a test harness. 2932 */ 2933 public static boolean isRunningInTestHarness() { 2934 return SystemProperties.getBoolean("ro.test_harness", false); 2935 } 2936 2937 /** 2938 * Returns the launch count of each installed package. 2939 * 2940 * @hide 2941 */ 2942 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2943 try { 2944 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2945 ServiceManager.getService("usagestats")); 2946 if (usageStatsService == null) { 2947 return new HashMap<String, Integer>(); 2948 } 2949 2950 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2951 ActivityThread.currentPackageName()); 2952 if (allPkgUsageStats == null) { 2953 return new HashMap<String, Integer>(); 2954 } 2955 2956 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2957 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2958 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2959 } 2960 2961 return launchCounts; 2962 } catch (RemoteException e) { 2963 Log.w(TAG, "Could not query launch counts", e); 2964 return new HashMap<String, Integer>(); 2965 } 2966 }*/ 2967 2968 /** @hide */ 2969 public static int checkComponentPermission(String permission, int uid, 2970 int owningUid, boolean exported) { 2971 // Root, system server get to do everything. 2972 final int appId = UserHandle.getAppId(uid); 2973 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2974 return PackageManager.PERMISSION_GRANTED; 2975 } 2976 // Isolated processes don't get any permissions. 2977 if (UserHandle.isIsolated(uid)) { 2978 return PackageManager.PERMISSION_DENIED; 2979 } 2980 // If there is a uid that owns whatever is being accessed, it has 2981 // blanket access to it regardless of the permissions it requires. 2982 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2983 return PackageManager.PERMISSION_GRANTED; 2984 } 2985 // If the target is not exported, then nobody else can get to it. 2986 if (!exported) { 2987 /* 2988 RuntimeException here = new RuntimeException("here"); 2989 here.fillInStackTrace(); 2990 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2991 here); 2992 */ 2993 return PackageManager.PERMISSION_DENIED; 2994 } 2995 if (permission == null) { 2996 return PackageManager.PERMISSION_GRANTED; 2997 } 2998 try { 2999 return AppGlobals.getPackageManager() 3000 .checkUidPermission(permission, uid); 3001 } catch (RemoteException e) { 3002 // Should never happen, but if it does... deny! 3003 Slog.e(TAG, "PackageManager is dead?!?", e); 3004 } 3005 return PackageManager.PERMISSION_DENIED; 3006 } 3007 3008 /** @hide */ 3009 public static int checkUidPermission(String permission, int uid) { 3010 try { 3011 return AppGlobals.getPackageManager() 3012 .checkUidPermission(permission, uid); 3013 } catch (RemoteException e) { 3014 // Should never happen, but if it does... deny! 3015 Slog.e(TAG, "PackageManager is dead?!?", e); 3016 } 3017 return PackageManager.PERMISSION_DENIED; 3018 } 3019 3020 /** 3021 * @hide 3022 * Helper for dealing with incoming user arguments to system service calls. 3023 * Takes care of checking permissions and converting USER_CURRENT to the 3024 * actual current user. 3025 * 3026 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 3027 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 3028 * @param userId The user id argument supplied by the caller -- this is the user 3029 * they want to run as. 3030 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 3031 * to get a USER_ALL returned and deal with it correctly. If false, 3032 * an exception will be thrown if USER_ALL is supplied. 3033 * @param requireFull If true, the caller must hold 3034 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 3035 * different user than their current process; otherwise they must hold 3036 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 3037 * @param name Optional textual name of the incoming call; only for generating error messages. 3038 * @param callerPackage Optional package name of caller; only for error messages. 3039 * 3040 * @return Returns the user ID that the call should run as. Will always be a concrete 3041 * user number, unless <var>allowAll</var> is true in which case it could also be 3042 * USER_ALL. 3043 */ 3044 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 3045 boolean allowAll, boolean requireFull, String name, String callerPackage) { 3046 if (UserHandle.getUserId(callingUid) == userId) { 3047 return userId; 3048 } 3049 try { 3050 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 3051 callingUid, userId, allowAll, requireFull, name, callerPackage); 3052 } catch (RemoteException e) { 3053 throw new SecurityException("Failed calling activity manager", e); 3054 } 3055 } 3056 3057 /** 3058 * Gets the userId of the current foreground user. Requires system permissions. 3059 * @hide 3060 */ 3061 @SystemApi 3062 public static int getCurrentUser() { 3063 UserInfo ui; 3064 try { 3065 ui = ActivityManagerNative.getDefault().getCurrentUser(); 3066 return ui != null ? ui.id : 0; 3067 } catch (RemoteException e) { 3068 return 0; 3069 } 3070 } 3071 3072 /** 3073 * @param userid the user's id. Zero indicates the default user. 3074 * @hide 3075 */ 3076 public boolean switchUser(int userid) { 3077 try { 3078 return ActivityManagerNative.getDefault().switchUser(userid); 3079 } catch (RemoteException e) { 3080 return false; 3081 } 3082 } 3083 3084 /** {@hide} */ 3085 public static final int FLAG_OR_STOPPED = 1 << 0; 3086 /** {@hide} */ 3087 public static final int FLAG_AND_LOCKED = 1 << 1; 3088 3089 /** 3090 * Return whether the given user is actively running. This means that 3091 * the user is in the "started" state, not "stopped" -- it is currently 3092 * allowed to run code through scheduled alarms, receiving broadcasts, 3093 * etc. A started user may be either the current foreground user or a 3094 * background user; the result here does not distinguish between the two. 3095 * @param userid the user's id. Zero indicates the default user. 3096 * @hide 3097 */ 3098 public boolean isUserRunning(int userid) { 3099 try { 3100 return ActivityManagerNative.getDefault().isUserRunning(userid, 0); 3101 } catch (RemoteException e) { 3102 return false; 3103 } 3104 } 3105 3106 /** 3107 * Perform a system dump of various state associated with the given application 3108 * package name. This call blocks while the dump is being performed, so should 3109 * not be done on a UI thread. The data will be written to the given file 3110 * descriptor as text. An application must hold the 3111 * {@link android.Manifest.permission#DUMP} permission to make this call. 3112 * @param fd The file descriptor that the dump should be written to. The file 3113 * descriptor is <em>not</em> closed by this function; the caller continues to 3114 * own it. 3115 * @param packageName The name of the package that is to be dumped. 3116 */ 3117 public void dumpPackageState(FileDescriptor fd, String packageName) { 3118 dumpPackageStateStatic(fd, packageName); 3119 } 3120 3121 /** 3122 * @hide 3123 */ 3124 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 3125 FileOutputStream fout = new FileOutputStream(fd); 3126 PrintWriter pw = new FastPrintWriter(fout); 3127 dumpService(pw, fd, "package", new String[] { packageName }); 3128 pw.println(); 3129 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 3130 "-a", "package", packageName }); 3131 pw.println(); 3132 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 3133 pw.println(); 3134 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 3135 pw.println(); 3136 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 3137 pw.println(); 3138 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 3139 pw.flush(); 3140 } 3141 3142 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 3143 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 3144 IBinder service = ServiceManager.checkService(name); 3145 if (service == null) { 3146 pw.println(" (Service not found)"); 3147 return; 3148 } 3149 TransferPipe tp = null; 3150 try { 3151 pw.flush(); 3152 tp = new TransferPipe(); 3153 tp.setBufferPrefix(" "); 3154 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3155 tp.go(fd, 10000); 3156 } catch (Throwable e) { 3157 if (tp != null) { 3158 tp.kill(); 3159 } 3160 pw.println("Failure dumping service:"); 3161 e.printStackTrace(pw); 3162 } 3163 } 3164 3165 /** 3166 * Request that the system start watching for the calling process to exceed a pss 3167 * size as given here. Once called, the system will look for any occasions where it 3168 * sees the associated process with a larger pss size and, when this happens, automatically 3169 * pull a heap dump from it and allow the user to share the data. Note that this request 3170 * continues running even if the process is killed and restarted. To remove the watch, 3171 * use {@link #clearWatchHeapLimit()}. 3172 * 3173 * <p>This API only work if the calling process has been marked as 3174 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3175 * (userdebug or eng) build.</p> 3176 * 3177 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3178 * handle heap limit reports themselves.</p> 3179 * 3180 * @param pssSize The size in bytes to set the limit at. 3181 */ 3182 public void setWatchHeapLimit(long pssSize) { 3183 try { 3184 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3185 mContext.getPackageName()); 3186 } catch (RemoteException e) { 3187 } 3188 } 3189 3190 /** 3191 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3192 * If your package has an activity handling this action, it will be launched with the 3193 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3194 * match the activty must support this action and a MIME type of "*/*". 3195 */ 3196 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3197 3198 /** 3199 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3200 */ 3201 public void clearWatchHeapLimit() { 3202 try { 3203 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3204 } catch (RemoteException e) { 3205 } 3206 } 3207 3208 /** 3209 * @hide 3210 */ 3211 public void startLockTaskMode(int taskId) { 3212 try { 3213 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3214 } catch (RemoteException e) { 3215 } 3216 } 3217 3218 /** 3219 * @hide 3220 */ 3221 public void stopLockTaskMode() { 3222 try { 3223 ActivityManagerNative.getDefault().stopLockTaskMode(); 3224 } catch (RemoteException e) { 3225 } 3226 } 3227 3228 /** 3229 * Return whether currently in lock task mode. When in this mode 3230 * no new tasks can be created or switched to. 3231 * 3232 * @see Activity#startLockTask() 3233 * 3234 * @deprecated Use {@link #getLockTaskModeState} instead. 3235 */ 3236 public boolean isInLockTaskMode() { 3237 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3238 } 3239 3240 /** 3241 * Return the current state of task locking. The three possible outcomes 3242 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3243 * and {@link #LOCK_TASK_MODE_PINNED}. 3244 * 3245 * @see Activity#startLockTask() 3246 */ 3247 public int getLockTaskModeState() { 3248 try { 3249 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3250 } catch (RemoteException e) { 3251 return ActivityManager.LOCK_TASK_MODE_NONE; 3252 } 3253 } 3254 3255 /** 3256 * The AppTask allows you to manage your own application's tasks. 3257 * See {@link android.app.ActivityManager#getAppTasks()} 3258 */ 3259 public static class AppTask { 3260 private IAppTask mAppTaskImpl; 3261 3262 /** @hide */ 3263 public AppTask(IAppTask task) { 3264 mAppTaskImpl = task; 3265 } 3266 3267 /** 3268 * Finishes all activities in this task and removes it from the recent tasks list. 3269 */ 3270 public void finishAndRemoveTask() { 3271 try { 3272 mAppTaskImpl.finishAndRemoveTask(); 3273 } catch (RemoteException e) { 3274 Slog.e(TAG, "Invalid AppTask", e); 3275 } 3276 } 3277 3278 /** 3279 * Get the RecentTaskInfo associated with this task. 3280 * 3281 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3282 */ 3283 public RecentTaskInfo getTaskInfo() { 3284 try { 3285 return mAppTaskImpl.getTaskInfo(); 3286 } catch (RemoteException e) { 3287 Slog.e(TAG, "Invalid AppTask", e); 3288 return null; 3289 } 3290 } 3291 3292 /** 3293 * Bring this task to the foreground. If it contains activities, they will be 3294 * brought to the foreground with it and their instances re-created if needed. 3295 * If it doesn't contain activities, the root activity of the task will be 3296 * re-launched. 3297 */ 3298 public void moveToFront() { 3299 try { 3300 mAppTaskImpl.moveToFront(); 3301 } catch (RemoteException e) { 3302 Slog.e(TAG, "Invalid AppTask", e); 3303 } 3304 } 3305 3306 /** 3307 * Start an activity in this task. Brings the task to the foreground. If this task 3308 * is not currently active (that is, its id < 0), then a new activity for the given 3309 * Intent will be launched as the root of the task and the task brought to the 3310 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3311 * an activity to launch in a new task, then a new activity for the given Intent will 3312 * be launched on top of the task and the task brought to the foreground. If this 3313 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3314 * or would otherwise be launched in to a new task, then the activity not launched but 3315 * this task be brought to the foreground and a new intent delivered to the top 3316 * activity if appropriate. 3317 * 3318 * <p>In other words, you generally want to use an Intent here that does not specify 3319 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3320 * and let the system do the right thing.</p> 3321 * 3322 * @param intent The Intent describing the new activity to be launched on the task. 3323 * @param options Optional launch options. 3324 * 3325 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3326 */ 3327 public void startActivity(Context context, Intent intent, Bundle options) { 3328 ActivityThread thread = ActivityThread.currentActivityThread(); 3329 thread.getInstrumentation().execStartActivityFromAppTask(context, 3330 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3331 } 3332 3333 /** 3334 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3335 * Intent of this AppTask. 3336 * 3337 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3338 * be set; otherwise, it will be cleared. 3339 */ 3340 public void setExcludeFromRecents(boolean exclude) { 3341 try { 3342 mAppTaskImpl.setExcludeFromRecents(exclude); 3343 } catch (RemoteException e) { 3344 Slog.e(TAG, "Invalid AppTask", e); 3345 } 3346 } 3347 } 3348} 3349