ActivityManager.java revision 3797c22ea16e932329ebffdc7e7ce09f9ecd9545
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.Manifest; 20import android.annotation.NonNull; 21import android.annotation.Nullable; 22import android.annotation.RequiresPermission; 23import android.annotation.SystemApi; 24import android.graphics.Canvas; 25import android.graphics.Matrix; 26import android.graphics.Point; 27import android.os.BatteryStats; 28import android.os.IBinder; 29import android.os.ParcelFileDescriptor; 30 31import android.util.Log; 32import com.android.internal.app.ProcessStats; 33import com.android.internal.os.TransferPipe; 34import com.android.internal.util.FastPrintWriter; 35 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.pm.ApplicationInfo; 40import android.content.pm.ConfigurationInfo; 41import android.content.pm.IPackageDataObserver; 42import android.content.pm.PackageManager; 43import android.content.pm.UserInfo; 44import android.content.res.Resources; 45import android.graphics.Bitmap; 46import android.graphics.Color; 47import android.graphics.Rect; 48import android.os.Bundle; 49import android.os.Debug; 50import android.os.Handler; 51import android.os.Parcel; 52import android.os.Parcelable; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.ServiceManager; 56import android.os.SystemProperties; 57import android.os.UserHandle; 58import android.text.TextUtils; 59import android.util.DisplayMetrics; 60import android.util.Size; 61import android.util.Slog; 62import org.xmlpull.v1.XmlSerializer; 63 64import java.io.FileDescriptor; 65import java.io.FileOutputStream; 66import java.io.IOException; 67import java.io.PrintWriter; 68import java.util.ArrayList; 69import java.util.List; 70 71/** 72 * Interact with the overall activities running in the system. 73 */ 74public class ActivityManager { 75 private static String TAG = "ActivityManager"; 76 77 private static int gMaxRecentTasks = -1; 78 79 private final Context mContext; 80 private final Handler mHandler; 81 82 /** 83 * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code 84 * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be 85 * uninstalled in lieu of the declaring one. The package named here must be 86 * signed with the same certificate as the one declaring the {@code <meta-data>}. 87 */ 88 public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; 89 90 /** 91 * Result for IActivityManager.startActivity: trying to start a background user 92 * activity that shouldn't be displayed for all users. 93 * @hide 94 */ 95 public static final int START_NOT_CURRENT_USER_ACTIVITY = -8; 96 97 /** 98 * Result for IActivityManager.startActivity: trying to start an activity under voice 99 * control when that activity does not support the VOICE category. 100 * @hide 101 */ 102 public static final int START_NOT_VOICE_COMPATIBLE = -7; 103 104 /** 105 * Result for IActivityManager.startActivity: an error where the 106 * start had to be canceled. 107 * @hide 108 */ 109 public static final int START_CANCELED = -6; 110 111 /** 112 * Result for IActivityManager.startActivity: an error where the 113 * thing being started is not an activity. 114 * @hide 115 */ 116 public static final int START_NOT_ACTIVITY = -5; 117 118 /** 119 * Result for IActivityManager.startActivity: an error where the 120 * caller does not have permission to start the activity. 121 * @hide 122 */ 123 public static final int START_PERMISSION_DENIED = -4; 124 125 /** 126 * Result for IActivityManager.startActivity: an error where the 127 * caller has requested both to forward a result and to receive 128 * a result. 129 * @hide 130 */ 131 public static final int START_FORWARD_AND_REQUEST_CONFLICT = -3; 132 133 /** 134 * Result for IActivityManager.startActivity: an error where the 135 * requested class is not found. 136 * @hide 137 */ 138 public static final int START_CLASS_NOT_FOUND = -2; 139 140 /** 141 * Result for IActivityManager.startActivity: an error where the 142 * given Intent could not be resolved to an activity. 143 * @hide 144 */ 145 public static final int START_INTENT_NOT_RESOLVED = -1; 146 147 /** 148 * Result for IActivityManaqer.startActivity: the activity was started 149 * successfully as normal. 150 * @hide 151 */ 152 public static final int START_SUCCESS = 0; 153 154 /** 155 * Result for IActivityManaqer.startActivity: the caller asked that the Intent not 156 * be executed if it is the recipient, and that is indeed the case. 157 * @hide 158 */ 159 public static final int START_RETURN_INTENT_TO_CALLER = 1; 160 161 /** 162 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 163 * a task was simply brought to the foreground. 164 * @hide 165 */ 166 public static final int START_TASK_TO_FRONT = 2; 167 168 /** 169 * Result for IActivityManaqer.startActivity: activity wasn't really started, but 170 * the given Intent was given to the existing top activity. 171 * @hide 172 */ 173 public static final int START_DELIVERED_TO_TOP = 3; 174 175 /** 176 * Result for IActivityManaqer.startActivity: request was canceled because 177 * app switches are temporarily canceled to ensure the user's last request 178 * (such as pressing home) is performed. 179 * @hide 180 */ 181 public static final int START_SWITCHES_CANCELED = 4; 182 183 /** 184 * Result for IActivityManaqer.startActivity: a new activity was attempted to be started 185 * while in Lock Task Mode. 186 * @hide 187 */ 188 public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = 5; 189 190 /** 191 * Flag for IActivityManaqer.startActivity: do special start mode where 192 * a new activity is launched only if it is needed. 193 * @hide 194 */ 195 public static final int START_FLAG_ONLY_IF_NEEDED = 1<<0; 196 197 /** 198 * Flag for IActivityManaqer.startActivity: launch the app for 199 * debugging. 200 * @hide 201 */ 202 public static final int START_FLAG_DEBUG = 1<<1; 203 204 /** 205 * Flag for IActivityManaqer.startActivity: launch the app for 206 * allocation tracking. 207 * @hide 208 */ 209 public static final int START_FLAG_TRACK_ALLOCATION = 1<<2; 210 211 /** 212 * Result for IActivityManaqer.broadcastIntent: success! 213 * @hide 214 */ 215 public static final int BROADCAST_SUCCESS = 0; 216 217 /** 218 * Result for IActivityManaqer.broadcastIntent: attempt to broadcast 219 * a sticky intent without appropriate permission. 220 * @hide 221 */ 222 public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; 223 224 /** 225 * Result for IActivityManager.broadcastIntent: trying to send a broadcast 226 * to a stopped user. Fail. 227 * @hide 228 */ 229 public static final int BROADCAST_FAILED_USER_STOPPED = -2; 230 231 /** 232 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 233 * for a sendBroadcast operation. 234 * @hide 235 */ 236 public static final int INTENT_SENDER_BROADCAST = 1; 237 238 /** 239 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 240 * for a startActivity operation. 241 * @hide 242 */ 243 public static final int INTENT_SENDER_ACTIVITY = 2; 244 245 /** 246 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 247 * for an activity result operation. 248 * @hide 249 */ 250 public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; 251 252 /** 253 * Type for IActivityManaqer.getIntentSender: this PendingIntent is 254 * for a startService operation. 255 * @hide 256 */ 257 public static final int INTENT_SENDER_SERVICE = 4; 258 259 /** @hide User operation call: success! */ 260 public static final int USER_OP_SUCCESS = 0; 261 262 /** @hide User operation call: given user id is not known. */ 263 public static final int USER_OP_UNKNOWN_USER = -1; 264 265 /** @hide User operation call: given user id is the current user, can't be stopped. */ 266 public static final int USER_OP_IS_CURRENT = -2; 267 268 /** @hide Process does not exist. */ 269 public static final int PROCESS_STATE_NONEXISTENT = -1; 270 271 /** @hide Process is a persistent system process. */ 272 public static final int PROCESS_STATE_PERSISTENT = 0; 273 274 /** @hide Process is a persistent system process and is doing UI. */ 275 public static final int PROCESS_STATE_PERSISTENT_UI = 1; 276 277 /** @hide Process is hosting the current top activities. Note that this covers 278 * all activities that are visible to the user. */ 279 public static final int PROCESS_STATE_TOP = 2; 280 281 /** @hide Process is hosting a foreground service due to a system binding. */ 282 public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 3; 283 284 /** @hide Process is hosting a foreground service. */ 285 public static final int PROCESS_STATE_FOREGROUND_SERVICE = 4; 286 287 /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ 288 public static final int PROCESS_STATE_TOP_SLEEPING = 5; 289 290 /** @hide Process is important to the user, and something they are aware of. */ 291 public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 6; 292 293 /** @hide Process is important to the user, but not something they are aware of. */ 294 public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 7; 295 296 /** @hide Process is in the background running a backup/restore operation. */ 297 public static final int PROCESS_STATE_BACKUP = 8; 298 299 /** @hide Process is in the background, but it can't restore its state so we want 300 * to try to avoid killing it. */ 301 public static final int PROCESS_STATE_HEAVY_WEIGHT = 9; 302 303 /** @hide Process is in the background running a service. Unlike oom_adj, this level 304 * is used for both the normal running in background state and the executing 305 * operations state. */ 306 public static final int PROCESS_STATE_SERVICE = 10; 307 308 /** @hide Process is in the background running a receiver. Note that from the 309 * perspective of oom_adj receivers run at a higher foreground level, but for our 310 * prioritization here that is not necessary and putting them below services means 311 * many fewer changes in some process states as they receive broadcasts. */ 312 public static final int PROCESS_STATE_RECEIVER = 11; 313 314 /** @hide Process is in the background but hosts the home activity. */ 315 public static final int PROCESS_STATE_HOME = 12; 316 317 /** @hide Process is in the background but hosts the last shown activity. */ 318 public static final int PROCESS_STATE_LAST_ACTIVITY = 13; 319 320 /** @hide Process is being cached for later use and contains activities. */ 321 public static final int PROCESS_STATE_CACHED_ACTIVITY = 14; 322 323 /** @hide Process is being cached for later use and is a client of another cached 324 * process that contains activities. */ 325 public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 15; 326 327 /** @hide Process is being cached for later use and is empty. */ 328 public static final int PROCESS_STATE_CACHED_EMPTY = 16; 329 330 /** @hide requestType for assist context: only basic information. */ 331 public static final int ASSIST_CONTEXT_BASIC = 0; 332 333 /** @hide requestType for assist context: generate full AssistStructure. */ 334 public static final int ASSIST_CONTEXT_FULL = 1; 335 336 /** 337 * Lock task mode is not active. 338 */ 339 public static final int LOCK_TASK_MODE_NONE = 0; 340 341 /** 342 * Full lock task mode is active. 343 */ 344 public static final int LOCK_TASK_MODE_LOCKED = 1; 345 346 /** 347 * App pinning mode is active. 348 */ 349 public static final int LOCK_TASK_MODE_PINNED = 2; 350 351 Point mAppTaskThumbnailSize; 352 353 /*package*/ ActivityManager(Context context, Handler handler) { 354 mContext = context; 355 mHandler = handler; 356 } 357 358 /** 359 * Screen compatibility mode: the application most always run in 360 * compatibility mode. 361 * @hide 362 */ 363 public static final int COMPAT_MODE_ALWAYS = -1; 364 365 /** 366 * Screen compatibility mode: the application can never run in 367 * compatibility mode. 368 * @hide 369 */ 370 public static final int COMPAT_MODE_NEVER = -2; 371 372 /** 373 * Screen compatibility mode: unknown. 374 * @hide 375 */ 376 public static final int COMPAT_MODE_UNKNOWN = -3; 377 378 /** 379 * Screen compatibility mode: the application currently has compatibility 380 * mode disabled. 381 * @hide 382 */ 383 public static final int COMPAT_MODE_DISABLED = 0; 384 385 /** 386 * Screen compatibility mode: the application currently has compatibility 387 * mode enabled. 388 * @hide 389 */ 390 public static final int COMPAT_MODE_ENABLED = 1; 391 392 /** 393 * Screen compatibility mode: request to toggle the application's 394 * compatibility mode. 395 * @hide 396 */ 397 public static final int COMPAT_MODE_TOGGLE = 2; 398 399 /** @hide */ 400 public static class StackId { 401 /** Invalid stack ID. */ 402 public static final int INVALID_STACK_ID = -1; 403 404 /** First static stack ID. */ 405 public static final int FIRST_STATIC_STACK_ID = 0; 406 407 /** Home activity stack ID. */ 408 public static final int HOME_STACK_ID = FIRST_STATIC_STACK_ID; 409 410 /** ID of stack where fullscreen activities are normally launched into. */ 411 public static final int FULLSCREEN_WORKSPACE_STACK_ID = 1; 412 413 /** ID of stack where freeform/resized activities are normally launched into. */ 414 public static final int FREEFORM_WORKSPACE_STACK_ID = FULLSCREEN_WORKSPACE_STACK_ID + 1; 415 416 /** ID of stack that occupies a dedicated region of the screen. */ 417 public static final int DOCKED_STACK_ID = FREEFORM_WORKSPACE_STACK_ID + 1; 418 419 /** ID of stack that always on top (always visible) when it exist. */ 420 public static final int PINNED_STACK_ID = DOCKED_STACK_ID + 1; 421 422 /** Last static stack stack ID. */ 423 public static final int LAST_STATIC_STACK_ID = PINNED_STACK_ID; 424 425 /** Start of ID range used by stacks that are created dynamically. */ 426 public static final int FIRST_DYNAMIC_STACK_ID = LAST_STATIC_STACK_ID + 1; 427 428 public static boolean isStaticStack(int stackId) { 429 return stackId >= FIRST_STATIC_STACK_ID && stackId <= LAST_STATIC_STACK_ID; 430 } 431 432 /** 433 * Returns true if the activities contained in the input stack display a shadow around 434 * their border. 435 */ 436 public static boolean hasWindowShadow(int stackId) { 437 return stackId == FREEFORM_WORKSPACE_STACK_ID || stackId == PINNED_STACK_ID; 438 } 439 440 /** 441 * Returns true if the activities contained in the input stack display a decor view. 442 */ 443 public static boolean hasWindowDecor(int stackId) { 444 return stackId == FREEFORM_WORKSPACE_STACK_ID; 445 } 446 447 /** 448 * Returns true if the tasks contained in the stack can be resized independently of the 449 * stack. 450 */ 451 public static boolean isTaskResizeAllowed(int stackId) { 452 return stackId == FREEFORM_WORKSPACE_STACK_ID; 453 } 454 455 /** 456 * Returns true if the task bounds should persist across power cycles. 457 */ 458 public static boolean persistTaskBounds(int stackId) { 459 return isStaticStack(stackId) && 460 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 461 } 462 463 /** 464 * Returns true if dynamic stacks are allowed to be visible behind the input stack. 465 */ 466 public static boolean isDynamicStacksVisibleBehindAllowed(int stackId) { 467 return stackId == PINNED_STACK_ID; 468 } 469 470 /** 471 * Returns true if we try to maintain focus in the current stack when the top activity 472 * finishes. 473 */ 474 public static boolean keepFocusInStackIfPossible(int stackId) { 475 return stackId == FREEFORM_WORKSPACE_STACK_ID 476 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 477 } 478 479 /** 480 * Returns true if Stack size is affected by the docked stack changing size. 481 */ 482 public static boolean isResizeableByDockedStack(int stackId) { 483 return isStaticStack(stackId) && 484 stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 485 } 486 487 /** 488 * Returns true if the size of tasks in the input stack are affected by the docked stack 489 * changing size. 490 */ 491 public static boolean isTaskResizeableByDockedStack(int stackId) { 492 return isStaticStack(stackId) && stackId != FREEFORM_WORKSPACE_STACK_ID 493 && stackId != DOCKED_STACK_ID && stackId != PINNED_STACK_ID; 494 } 495 496 /** 497 * Returns true if the windows of tasks being moved to this stack should be preserved so 498 * there isn't a display gap. 499 */ 500 public static boolean preserveWindowOnTaskMove(int stackId) { 501 return stackId == FULLSCREEN_WORKSPACE_STACK_ID 502 || stackId == DOCKED_STACK_ID || stackId == PINNED_STACK_ID; 503 } 504 } 505 506 /** 507 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 508 * specifies the position of the created docked stack at the top half of the screen if 509 * in portrait mode or at the left half of the screen if in landscape mode. 510 * @hide 511 */ 512 public static final int DOCKED_STACK_CREATE_MODE_TOP_OR_LEFT = 0; 513 514 /** 515 * Input parameter to {@link android.app.IActivityManager#moveTaskToDockedStack} which 516 * specifies the position of the created docked stack at the bottom half of the screen if 517 * in portrait mode or at the right half of the screen if in landscape mode. 518 * @hide 519 */ 520 public static final int DOCKED_STACK_CREATE_MODE_BOTTOM_OR_RIGHT = 1; 521 522 /** 523 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 524 * that the resize doesn't need to preserve the window, and can be skipped if bounds 525 * is unchanged. This mode is used by window manager in most cases. 526 * @hide 527 */ 528 public static final int RESIZE_MODE_SYSTEM = 0; 529 530 /** 531 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 532 * that the resize should preserve the window if possible. 533 * @hide 534 */ 535 public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); 536 537 /** 538 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 539 * that the resize should be performed even if the bounds appears unchanged. 540 * @hide 541 */ 542 public static final int RESIZE_MODE_FORCED = (0x1 << 1); 543 544 /** 545 * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window 546 * manager during a screen rotation. 547 * @hide 548 */ 549 public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; 550 551 /** 552 * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the 553 * resize is due to a drag action. 554 * @hide 555 */ 556 public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; 557 558 /** 559 * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates 560 * that the resize should preserve the window if possible, and should not be skipped 561 * even if the bounds is unchanged. Usually used to force a resizing when a drag action 562 * is ending. 563 * @hide 564 */ 565 public static final int RESIZE_MODE_USER_FORCED = 566 RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; 567 568 /** @hide */ 569 public int getFrontActivityScreenCompatMode() { 570 try { 571 return ActivityManagerNative.getDefault().getFrontActivityScreenCompatMode(); 572 } catch (RemoteException e) { 573 // System dead, we will be dead too soon! 574 return 0; 575 } 576 } 577 578 /** @hide */ 579 public void setFrontActivityScreenCompatMode(int mode) { 580 try { 581 ActivityManagerNative.getDefault().setFrontActivityScreenCompatMode(mode); 582 } catch (RemoteException e) { 583 // System dead, we will be dead too soon! 584 } 585 } 586 587 /** @hide */ 588 public int getPackageScreenCompatMode(String packageName) { 589 try { 590 return ActivityManagerNative.getDefault().getPackageScreenCompatMode(packageName); 591 } catch (RemoteException e) { 592 // System dead, we will be dead too soon! 593 return 0; 594 } 595 } 596 597 /** @hide */ 598 public void setPackageScreenCompatMode(String packageName, int mode) { 599 try { 600 ActivityManagerNative.getDefault().setPackageScreenCompatMode(packageName, mode); 601 } catch (RemoteException e) { 602 // System dead, we will be dead too soon! 603 } 604 } 605 606 /** @hide */ 607 public boolean getPackageAskScreenCompat(String packageName) { 608 try { 609 return ActivityManagerNative.getDefault().getPackageAskScreenCompat(packageName); 610 } catch (RemoteException e) { 611 // System dead, we will be dead too soon! 612 return false; 613 } 614 } 615 616 /** @hide */ 617 public void setPackageAskScreenCompat(String packageName, boolean ask) { 618 try { 619 ActivityManagerNative.getDefault().setPackageAskScreenCompat(packageName, ask); 620 } catch (RemoteException e) { 621 // System dead, we will be dead too soon! 622 } 623 } 624 625 /** 626 * Return the approximate per-application memory class of the current 627 * device. This gives you an idea of how hard a memory limit you should 628 * impose on your application to let the overall system work best. The 629 * returned value is in megabytes; the baseline Android memory class is 630 * 16 (which happens to be the Java heap limit of those devices); some 631 * device with more memory may return 24 or even higher numbers. 632 */ 633 public int getMemoryClass() { 634 return staticGetMemoryClass(); 635 } 636 637 /** @hide */ 638 static public int staticGetMemoryClass() { 639 // Really brain dead right now -- just take this from the configured 640 // vm heap size, and assume it is in megabytes and thus ends with "m". 641 String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); 642 if (vmHeapSize != null && !"".equals(vmHeapSize)) { 643 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length()-1)); 644 } 645 return staticGetLargeMemoryClass(); 646 } 647 648 /** 649 * Return the approximate per-application memory class of the current 650 * device when an application is running with a large heap. This is the 651 * space available for memory-intensive applications; most applications 652 * should not need this amount of memory, and should instead stay with the 653 * {@link #getMemoryClass()} limit. The returned value is in megabytes. 654 * This may be the same size as {@link #getMemoryClass()} on memory 655 * constrained devices, or it may be significantly larger on devices with 656 * a large amount of available RAM. 657 * 658 * <p>The is the size of the application's Dalvik heap if it has 659 * specified <code>android:largeHeap="true"</code> in its manifest. 660 */ 661 public int getLargeMemoryClass() { 662 return staticGetLargeMemoryClass(); 663 } 664 665 /** @hide */ 666 static public int staticGetLargeMemoryClass() { 667 // Really brain dead right now -- just take this from the configured 668 // vm heap size, and assume it is in megabytes and thus ends with "m". 669 String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); 670 return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); 671 } 672 673 /** 674 * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM 675 * is ultimately up to the device configuration, but currently it generally means 676 * something in the class of a 512MB device with about a 800x480 or less screen. 677 * This is mostly intended to be used by apps to determine whether they should turn 678 * off certain features that require more RAM. 679 */ 680 public boolean isLowRamDevice() { 681 return isLowRamDeviceStatic(); 682 } 683 684 /** @hide */ 685 public static boolean isLowRamDeviceStatic() { 686 return "true".equals(SystemProperties.get("ro.config.low_ram", "false")); 687 } 688 689 /** 690 * Used by persistent processes to determine if they are running on a 691 * higher-end device so should be okay using hardware drawing acceleration 692 * (which tends to consume a lot more RAM). 693 * @hide 694 */ 695 static public boolean isHighEndGfx() { 696 return !isLowRamDeviceStatic() && 697 !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); 698 } 699 700 /** 701 * Return the maximum number of recents entries that we will maintain and show. 702 * @hide 703 */ 704 static public int getMaxRecentTasksStatic() { 705 if (gMaxRecentTasks < 0) { 706 return gMaxRecentTasks = isLowRamDeviceStatic() ? 50 : 100; 707 } 708 return gMaxRecentTasks; 709 } 710 711 /** 712 * Return the default limit on the number of recents that an app can make. 713 * @hide 714 */ 715 static public int getDefaultAppRecentsLimitStatic() { 716 return getMaxRecentTasksStatic() / 6; 717 } 718 719 /** 720 * Return the maximum limit on the number of recents that an app can make. 721 * @hide 722 */ 723 static public int getMaxAppRecentsLimitStatic() { 724 return getMaxRecentTasksStatic() / 2; 725 } 726 727 /** 728 * Information you can set and retrieve about the current activity within the recent task list. 729 */ 730 public static class TaskDescription implements Parcelable { 731 /** @hide */ 732 public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; 733 private static final String ATTR_TASKDESCRIPTIONLABEL = 734 ATTR_TASKDESCRIPTION_PREFIX + "label"; 735 private static final String ATTR_TASKDESCRIPTIONCOLOR = 736 ATTR_TASKDESCRIPTION_PREFIX + "color"; 737 private static final String ATTR_TASKDESCRIPTIONICONFILENAME = 738 ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; 739 740 private String mLabel; 741 private Bitmap mIcon; 742 private String mIconFilename; 743 private int mColorPrimary; 744 745 /** 746 * Creates the TaskDescription to the specified values. 747 * 748 * @param label A label and description of the current state of this task. 749 * @param icon An icon that represents the current state of this task. 750 * @param colorPrimary A color to override the theme's primary color. This color must be opaque. 751 */ 752 public TaskDescription(String label, Bitmap icon, int colorPrimary) { 753 if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { 754 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 755 } 756 757 mLabel = label; 758 mIcon = icon; 759 mColorPrimary = colorPrimary; 760 } 761 762 /** @hide */ 763 public TaskDescription(String label, int colorPrimary, String iconFilename) { 764 this(label, null, colorPrimary); 765 mIconFilename = iconFilename; 766 } 767 768 /** 769 * Creates the TaskDescription to the specified values. 770 * 771 * @param label A label and description of the current state of this activity. 772 * @param icon An icon that represents the current state of this activity. 773 */ 774 public TaskDescription(String label, Bitmap icon) { 775 this(label, icon, 0); 776 } 777 778 /** 779 * Creates the TaskDescription to the specified values. 780 * 781 * @param label A label and description of the current state of this activity. 782 */ 783 public TaskDescription(String label) { 784 this(label, null, 0); 785 } 786 787 /** 788 * Creates an empty TaskDescription. 789 */ 790 public TaskDescription() { 791 this(null, null, 0); 792 } 793 794 /** 795 * Creates a copy of another TaskDescription. 796 */ 797 public TaskDescription(TaskDescription td) { 798 mLabel = td.mLabel; 799 mIcon = td.mIcon; 800 mColorPrimary = td.mColorPrimary; 801 mIconFilename = td.mIconFilename; 802 } 803 804 private TaskDescription(Parcel source) { 805 readFromParcel(source); 806 } 807 808 /** 809 * Sets the label for this task description. 810 * @hide 811 */ 812 public void setLabel(String label) { 813 mLabel = label; 814 } 815 816 /** 817 * Sets the primary color for this task description. 818 * @hide 819 */ 820 public void setPrimaryColor(int primaryColor) { 821 // Ensure that the given color is valid 822 if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { 823 throw new RuntimeException("A TaskDescription's primary color should be opaque"); 824 } 825 mColorPrimary = primaryColor; 826 } 827 828 /** 829 * Sets the icon for this task description. 830 * @hide 831 */ 832 public void setIcon(Bitmap icon) { 833 mIcon = icon; 834 } 835 836 /** 837 * Moves the icon bitmap reference from an actual Bitmap to a file containing the 838 * bitmap. 839 * @hide 840 */ 841 public void setIconFilename(String iconFilename) { 842 mIconFilename = iconFilename; 843 mIcon = null; 844 } 845 846 /** 847 * @return The label and description of the current state of this task. 848 */ 849 public String getLabel() { 850 return mLabel; 851 } 852 853 /** 854 * @return The icon that represents the current state of this task. 855 */ 856 public Bitmap getIcon() { 857 if (mIcon != null) { 858 return mIcon; 859 } 860 return loadTaskDescriptionIcon(mIconFilename); 861 } 862 863 /** @hide */ 864 public String getIconFilename() { 865 return mIconFilename; 866 } 867 868 /** @hide */ 869 public Bitmap getInMemoryIcon() { 870 return mIcon; 871 } 872 873 /** @hide */ 874 public static Bitmap loadTaskDescriptionIcon(String iconFilename) { 875 if (iconFilename != null) { 876 try { 877 return ActivityManagerNative.getDefault(). 878 getTaskDescriptionIcon(iconFilename); 879 } catch (RemoteException e) { 880 } 881 } 882 return null; 883 } 884 885 /** 886 * @return The color override on the theme's primary color. 887 */ 888 public int getPrimaryColor() { 889 return mColorPrimary; 890 } 891 892 /** @hide */ 893 public void saveToXml(XmlSerializer out) throws IOException { 894 if (mLabel != null) { 895 out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); 896 } 897 if (mColorPrimary != 0) { 898 out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR, Integer.toHexString(mColorPrimary)); 899 } 900 if (mIconFilename != null) { 901 out.attribute(null, ATTR_TASKDESCRIPTIONICONFILENAME, mIconFilename); 902 } 903 } 904 905 /** @hide */ 906 public void restoreFromXml(String attrName, String attrValue) { 907 if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { 908 setLabel(attrValue); 909 } else if (ATTR_TASKDESCRIPTIONCOLOR.equals(attrName)) { 910 setPrimaryColor((int) Long.parseLong(attrValue, 16)); 911 } else if (ATTR_TASKDESCRIPTIONICONFILENAME.equals(attrName)) { 912 setIconFilename(attrValue); 913 } 914 } 915 916 @Override 917 public int describeContents() { 918 return 0; 919 } 920 921 @Override 922 public void writeToParcel(Parcel dest, int flags) { 923 if (mLabel == null) { 924 dest.writeInt(0); 925 } else { 926 dest.writeInt(1); 927 dest.writeString(mLabel); 928 } 929 if (mIcon == null) { 930 dest.writeInt(0); 931 } else { 932 dest.writeInt(1); 933 mIcon.writeToParcel(dest, 0); 934 } 935 dest.writeInt(mColorPrimary); 936 if (mIconFilename == null) { 937 dest.writeInt(0); 938 } else { 939 dest.writeInt(1); 940 dest.writeString(mIconFilename); 941 } 942 } 943 944 public void readFromParcel(Parcel source) { 945 mLabel = source.readInt() > 0 ? source.readString() : null; 946 mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; 947 mColorPrimary = source.readInt(); 948 mIconFilename = source.readInt() > 0 ? source.readString() : null; 949 } 950 951 public static final Creator<TaskDescription> CREATOR 952 = new Creator<TaskDescription>() { 953 public TaskDescription createFromParcel(Parcel source) { 954 return new TaskDescription(source); 955 } 956 public TaskDescription[] newArray(int size) { 957 return new TaskDescription[size]; 958 } 959 }; 960 961 @Override 962 public String toString() { 963 return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + 964 " colorPrimary: " + mColorPrimary; 965 } 966 } 967 968 /** 969 * Information you can retrieve about tasks that the user has most recently 970 * started or visited. 971 */ 972 public static class RecentTaskInfo implements Parcelable { 973 /** 974 * If this task is currently running, this is the identifier for it. 975 * If it is not running, this will be -1. 976 */ 977 public int id; 978 979 /** 980 * The true identifier of this task, valid even if it is not running. 981 */ 982 public int persistentId; 983 984 /** 985 * The original Intent used to launch the task. You can use this 986 * Intent to re-launch the task (if it is no longer running) or bring 987 * the current task to the front. 988 */ 989 public Intent baseIntent; 990 991 /** 992 * If this task was started from an alias, this is the actual 993 * activity component that was initially started; the component of 994 * the baseIntent in this case is the name of the actual activity 995 * implementation that the alias referred to. Otherwise, this is null. 996 */ 997 public ComponentName origActivity; 998 999 /** 1000 * The actual activity component that started the task. 1001 * @hide 1002 */ 1003 @Nullable 1004 public ComponentName realActivity; 1005 1006 /** 1007 * Description of the task's last state. 1008 */ 1009 public CharSequence description; 1010 1011 /** 1012 * The id of the ActivityStack this Task was on most recently. 1013 * @hide 1014 */ 1015 public int stackId; 1016 1017 /** 1018 * The id of the user the task was running as. 1019 * @hide 1020 */ 1021 public int userId; 1022 1023 /** 1024 * The first time this task was active. 1025 * @hide 1026 */ 1027 public long firstActiveTime; 1028 1029 /** 1030 * The last time this task was active. 1031 * @hide 1032 */ 1033 public long lastActiveTime; 1034 1035 /** 1036 * The recent activity values for the highest activity in the stack to have set the values. 1037 * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. 1038 */ 1039 public TaskDescription taskDescription; 1040 1041 /** 1042 * Task affiliation for grouping with other tasks. 1043 */ 1044 public int affiliatedTaskId; 1045 1046 /** 1047 * Task affiliation color of the source task with the affiliated task id. 1048 * 1049 * @hide 1050 */ 1051 public int affiliatedTaskColor; 1052 1053 /** 1054 * The component launched as the first activity in the task. 1055 * This can be considered the "application" of this task. 1056 */ 1057 public ComponentName baseActivity; 1058 1059 /** 1060 * The activity component at the top of the history stack of the task. 1061 * This is what the user is currently doing. 1062 */ 1063 public ComponentName topActivity; 1064 1065 /** 1066 * Number of activities in this task. 1067 */ 1068 public int numActivities; 1069 1070 public RecentTaskInfo() { 1071 } 1072 1073 @Override 1074 public int describeContents() { 1075 return 0; 1076 } 1077 1078 @Override 1079 public void writeToParcel(Parcel dest, int flags) { 1080 dest.writeInt(id); 1081 dest.writeInt(persistentId); 1082 if (baseIntent != null) { 1083 dest.writeInt(1); 1084 baseIntent.writeToParcel(dest, 0); 1085 } else { 1086 dest.writeInt(0); 1087 } 1088 ComponentName.writeToParcel(origActivity, dest); 1089 ComponentName.writeToParcel(realActivity, dest); 1090 TextUtils.writeToParcel(description, dest, 1091 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1092 if (taskDescription != null) { 1093 dest.writeInt(1); 1094 taskDescription.writeToParcel(dest, 0); 1095 } else { 1096 dest.writeInt(0); 1097 } 1098 dest.writeInt(stackId); 1099 dest.writeInt(userId); 1100 dest.writeLong(firstActiveTime); 1101 dest.writeLong(lastActiveTime); 1102 dest.writeInt(affiliatedTaskId); 1103 dest.writeInt(affiliatedTaskColor); 1104 ComponentName.writeToParcel(baseActivity, dest); 1105 ComponentName.writeToParcel(topActivity, dest); 1106 dest.writeInt(numActivities); 1107 } 1108 1109 public void readFromParcel(Parcel source) { 1110 id = source.readInt(); 1111 persistentId = source.readInt(); 1112 baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; 1113 origActivity = ComponentName.readFromParcel(source); 1114 realActivity = ComponentName.readFromParcel(source); 1115 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1116 taskDescription = source.readInt() > 0 ? 1117 TaskDescription.CREATOR.createFromParcel(source) : null; 1118 stackId = source.readInt(); 1119 userId = source.readInt(); 1120 firstActiveTime = source.readLong(); 1121 lastActiveTime = source.readLong(); 1122 affiliatedTaskId = source.readInt(); 1123 affiliatedTaskColor = source.readInt(); 1124 baseActivity = ComponentName.readFromParcel(source); 1125 topActivity = ComponentName.readFromParcel(source); 1126 numActivities = source.readInt(); 1127 } 1128 1129 public static final Creator<RecentTaskInfo> CREATOR 1130 = new Creator<RecentTaskInfo>() { 1131 public RecentTaskInfo createFromParcel(Parcel source) { 1132 return new RecentTaskInfo(source); 1133 } 1134 public RecentTaskInfo[] newArray(int size) { 1135 return new RecentTaskInfo[size]; 1136 } 1137 }; 1138 1139 private RecentTaskInfo(Parcel source) { 1140 readFromParcel(source); 1141 } 1142 } 1143 1144 /** 1145 * Flag for use with {@link #getRecentTasks}: return all tasks, even those 1146 * that have set their 1147 * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. 1148 */ 1149 public static final int RECENT_WITH_EXCLUDED = 0x0001; 1150 1151 /** 1152 * Provides a list that does not contain any 1153 * recent tasks that currently are not available to the user. 1154 */ 1155 public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; 1156 1157 /** 1158 * Provides a list that contains recent tasks for all 1159 * profiles of a user. 1160 * @hide 1161 */ 1162 public static final int RECENT_INCLUDE_PROFILES = 0x0004; 1163 1164 /** 1165 * Ignores all tasks that are on the home stack. 1166 * @hide 1167 */ 1168 public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008; 1169 1170 /** 1171 * <p></p>Return a list of the tasks that the user has recently launched, with 1172 * the most recent being first and older ones after in order. 1173 * 1174 * <p><b>Note: this method is only intended for debugging and presenting 1175 * task management user interfaces</b>. This should never be used for 1176 * core logic in an application, such as deciding between different 1177 * behaviors based on the information found here. Such uses are 1178 * <em>not</em> supported, and will likely break in the future. For 1179 * example, if multiple applications can be actively running at the 1180 * same time, assumptions made about the meaning of the data here for 1181 * purposes of control flow will be incorrect.</p> 1182 * 1183 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is 1184 * no longer available to third party applications: the introduction of 1185 * document-centric recents means 1186 * it can leak personal information to the caller. For backwards compatibility, 1187 * it will still return a small subset of its data: at least the caller's 1188 * own tasks (though see {@link #getAppTasks()} for the correct supported 1189 * way to retrieve that information), and possibly some other tasks 1190 * such as home that are known to not be sensitive. 1191 * 1192 * @param maxNum The maximum number of entries to return in the list. The 1193 * actual number returned may be smaller, depending on how many tasks the 1194 * user has started and the maximum number the system can remember. 1195 * @param flags Information about what to return. May be any combination 1196 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1197 * 1198 * @return Returns a list of RecentTaskInfo records describing each of 1199 * the recent tasks. 1200 */ 1201 @Deprecated 1202 public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) 1203 throws SecurityException { 1204 try { 1205 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1206 flags, UserHandle.myUserId()); 1207 } catch (RemoteException e) { 1208 // System dead, we will be dead too soon! 1209 return null; 1210 } 1211 } 1212 1213 /** 1214 * Same as {@link #getRecentTasks(int, int)} but returns the recent tasks for a 1215 * specific user. It requires holding 1216 * the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission. 1217 * @param maxNum The maximum number of entries to return in the list. The 1218 * actual number returned may be smaller, depending on how many tasks the 1219 * user has started and the maximum number the system can remember. 1220 * @param flags Information about what to return. May be any combination 1221 * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. 1222 * 1223 * @return Returns a list of RecentTaskInfo records describing each of 1224 * the recent tasks. Most recently activated tasks go first. 1225 * 1226 * @hide 1227 */ 1228 public List<RecentTaskInfo> getRecentTasksForUser(int maxNum, int flags, int userId) 1229 throws SecurityException { 1230 try { 1231 return ActivityManagerNative.getDefault().getRecentTasks(maxNum, 1232 flags, userId); 1233 } catch (RemoteException e) { 1234 // System dead, we will be dead too soon! 1235 return null; 1236 } 1237 } 1238 1239 /** 1240 * Information you can retrieve about a particular task that is currently 1241 * "running" in the system. Note that a running task does not mean the 1242 * given task actually has a process it is actively running in; it simply 1243 * means that the user has gone to it and never closed it, but currently 1244 * the system may have killed its process and is only holding on to its 1245 * last state in order to restart it when the user returns. 1246 */ 1247 public static class RunningTaskInfo implements Parcelable { 1248 /** 1249 * A unique identifier for this task. 1250 */ 1251 public int id; 1252 1253 /** 1254 * The stack that currently contains this task. 1255 * @hide 1256 */ 1257 public int stackId; 1258 1259 /** 1260 * The component launched as the first activity in the task. This can 1261 * be considered the "application" of this task. 1262 */ 1263 public ComponentName baseActivity; 1264 1265 /** 1266 * The activity component at the top of the history stack of the task. 1267 * This is what the user is currently doing. 1268 */ 1269 public ComponentName topActivity; 1270 1271 /** 1272 * Thumbnail representation of the task's current state. Currently 1273 * always null. 1274 */ 1275 public Bitmap thumbnail; 1276 1277 /** 1278 * Description of the task's current state. 1279 */ 1280 public CharSequence description; 1281 1282 /** 1283 * Number of activities in this task. 1284 */ 1285 public int numActivities; 1286 1287 /** 1288 * Number of activities that are currently running (not stopped 1289 * and persisted) in this task. 1290 */ 1291 public int numRunning; 1292 1293 /** 1294 * Last time task was run. For sorting. 1295 * @hide 1296 */ 1297 public long lastActiveTime; 1298 1299 public RunningTaskInfo() { 1300 } 1301 1302 public int describeContents() { 1303 return 0; 1304 } 1305 1306 public void writeToParcel(Parcel dest, int flags) { 1307 dest.writeInt(id); 1308 dest.writeInt(stackId); 1309 ComponentName.writeToParcel(baseActivity, dest); 1310 ComponentName.writeToParcel(topActivity, dest); 1311 if (thumbnail != null) { 1312 dest.writeInt(1); 1313 thumbnail.writeToParcel(dest, 0); 1314 } else { 1315 dest.writeInt(0); 1316 } 1317 TextUtils.writeToParcel(description, dest, 1318 Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1319 dest.writeInt(numActivities); 1320 dest.writeInt(numRunning); 1321 } 1322 1323 public void readFromParcel(Parcel source) { 1324 id = source.readInt(); 1325 stackId = source.readInt(); 1326 baseActivity = ComponentName.readFromParcel(source); 1327 topActivity = ComponentName.readFromParcel(source); 1328 if (source.readInt() != 0) { 1329 thumbnail = Bitmap.CREATOR.createFromParcel(source); 1330 } else { 1331 thumbnail = null; 1332 } 1333 description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); 1334 numActivities = source.readInt(); 1335 numRunning = source.readInt(); 1336 } 1337 1338 public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { 1339 public RunningTaskInfo createFromParcel(Parcel source) { 1340 return new RunningTaskInfo(source); 1341 } 1342 public RunningTaskInfo[] newArray(int size) { 1343 return new RunningTaskInfo[size]; 1344 } 1345 }; 1346 1347 private RunningTaskInfo(Parcel source) { 1348 readFromParcel(source); 1349 } 1350 } 1351 1352 /** 1353 * Get the list of tasks associated with the calling application. 1354 * 1355 * @return The list of tasks associated with the application making this call. 1356 * @throws SecurityException 1357 */ 1358 public List<ActivityManager.AppTask> getAppTasks() { 1359 ArrayList<AppTask> tasks = new ArrayList<AppTask>(); 1360 List<IAppTask> appTasks; 1361 try { 1362 appTasks = ActivityManagerNative.getDefault().getAppTasks(mContext.getPackageName()); 1363 } catch (RemoteException e) { 1364 // System dead, we will be dead too soon! 1365 return null; 1366 } 1367 int numAppTasks = appTasks.size(); 1368 for (int i = 0; i < numAppTasks; i++) { 1369 tasks.add(new AppTask(appTasks.get(i))); 1370 } 1371 return tasks; 1372 } 1373 1374 /** 1375 * Return the current design dimensions for {@link AppTask} thumbnails, for use 1376 * with {@link #addAppTask}. 1377 */ 1378 public Size getAppTaskThumbnailSize() { 1379 synchronized (this) { 1380 ensureAppTaskThumbnailSizeLocked(); 1381 return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); 1382 } 1383 } 1384 1385 private void ensureAppTaskThumbnailSizeLocked() { 1386 if (mAppTaskThumbnailSize == null) { 1387 try { 1388 mAppTaskThumbnailSize = ActivityManagerNative.getDefault().getAppTaskThumbnailSize(); 1389 } catch (RemoteException e) { 1390 throw new IllegalStateException("System dead?", e); 1391 } 1392 } 1393 } 1394 1395 /** 1396 * Add a new {@link AppTask} for the calling application. This will create a new 1397 * recents entry that is added to the <b>end</b> of all existing recents. 1398 * 1399 * @param activity The activity that is adding the entry. This is used to help determine 1400 * the context that the new recents entry will be in. 1401 * @param intent The Intent that describes the recents entry. This is the same Intent that 1402 * you would have used to launch the activity for it. In generally you will want to set 1403 * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and 1404 * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents 1405 * entry will exist without an activity, so it doesn't make sense to not retain it when 1406 * its activity disappears. The given Intent here also must have an explicit ComponentName 1407 * set on it. 1408 * @param description Optional additional description information. 1409 * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by 1410 * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be 1411 * recreated in your process, probably in a way you don't like, before the recents entry 1412 * is added. 1413 * 1414 * @return Returns the task id of the newly added app task, or -1 if the add failed. The 1415 * most likely cause of failure is that there is no more room for more tasks for your app. 1416 */ 1417 public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, 1418 @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { 1419 Point size; 1420 synchronized (this) { 1421 ensureAppTaskThumbnailSizeLocked(); 1422 size = mAppTaskThumbnailSize; 1423 } 1424 final int tw = thumbnail.getWidth(); 1425 final int th = thumbnail.getHeight(); 1426 if (tw != size.x || th != size.y) { 1427 Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); 1428 1429 // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. 1430 float scale; 1431 float dx = 0, dy = 0; 1432 if (tw * size.x > size.y * th) { 1433 scale = (float) size.x / (float) th; 1434 dx = (size.y - tw * scale) * 0.5f; 1435 } else { 1436 scale = (float) size.y / (float) tw; 1437 dy = (size.x - th * scale) * 0.5f; 1438 } 1439 Matrix matrix = new Matrix(); 1440 matrix.setScale(scale, scale); 1441 matrix.postTranslate((int) (dx + 0.5f), 0); 1442 1443 Canvas canvas = new Canvas(bm); 1444 canvas.drawBitmap(thumbnail, matrix, null); 1445 canvas.setBitmap(null); 1446 1447 thumbnail = bm; 1448 } 1449 if (description == null) { 1450 description = new TaskDescription(); 1451 } 1452 try { 1453 return ActivityManagerNative.getDefault().addAppTask(activity.getActivityToken(), 1454 intent, description, thumbnail); 1455 } catch (RemoteException e) { 1456 throw new IllegalStateException("System dead?", e); 1457 } 1458 } 1459 1460 /** 1461 * Return a list of the tasks that are currently running, with 1462 * the most recent being first and older ones after in order. Note that 1463 * "running" does not mean any of the task's code is currently loaded or 1464 * activity -- the task may have been frozen by the system, so that it 1465 * can be restarted in its previous state when next brought to the 1466 * foreground. 1467 * 1468 * <p><b>Note: this method is only intended for debugging and presenting 1469 * task management user interfaces</b>. This should never be used for 1470 * core logic in an application, such as deciding between different 1471 * behaviors based on the information found here. Such uses are 1472 * <em>not</em> supported, and will likely break in the future. For 1473 * example, if multiple applications can be actively running at the 1474 * same time, assumptions made about the meaning of the data here for 1475 * purposes of control flow will be incorrect.</p> 1476 * 1477 * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method 1478 * is no longer available to third party 1479 * applications: the introduction of document-centric recents means 1480 * it can leak person information to the caller. For backwards compatibility, 1481 * it will still retu rn a small subset of its data: at least the caller's 1482 * own tasks, and possibly some other tasks 1483 * such as home that are known to not be sensitive. 1484 * 1485 * @param maxNum The maximum number of entries to return in the list. The 1486 * actual number returned may be smaller, depending on how many tasks the 1487 * user has started. 1488 * 1489 * @return Returns a list of RunningTaskInfo records describing each of 1490 * the running tasks. 1491 */ 1492 @Deprecated 1493 public List<RunningTaskInfo> getRunningTasks(int maxNum) 1494 throws SecurityException { 1495 try { 1496 return ActivityManagerNative.getDefault().getTasks(maxNum, 0); 1497 } catch (RemoteException e) { 1498 // System dead, we will be dead too soon! 1499 return null; 1500 } 1501 } 1502 1503 /** 1504 * Completely remove the given task. 1505 * 1506 * @param taskId Identifier of the task to be removed. 1507 * @return Returns true if the given task was found and removed. 1508 * 1509 * @hide 1510 */ 1511 public boolean removeTask(int taskId) throws SecurityException { 1512 try { 1513 return ActivityManagerNative.getDefault().removeTask(taskId); 1514 } catch (RemoteException e) { 1515 // System dead, we will be dead too soon! 1516 return false; 1517 } 1518 } 1519 1520 /** @hide */ 1521 public static class TaskThumbnail implements Parcelable { 1522 public Bitmap mainThumbnail; 1523 public ParcelFileDescriptor thumbnailFileDescriptor; 1524 1525 public TaskThumbnail() { 1526 } 1527 1528 public int describeContents() { 1529 if (thumbnailFileDescriptor != null) { 1530 return thumbnailFileDescriptor.describeContents(); 1531 } 1532 return 0; 1533 } 1534 1535 public void writeToParcel(Parcel dest, int flags) { 1536 if (mainThumbnail != null) { 1537 dest.writeInt(1); 1538 mainThumbnail.writeToParcel(dest, flags); 1539 } else { 1540 dest.writeInt(0); 1541 } 1542 if (thumbnailFileDescriptor != null) { 1543 dest.writeInt(1); 1544 thumbnailFileDescriptor.writeToParcel(dest, flags); 1545 } else { 1546 dest.writeInt(0); 1547 } 1548 } 1549 1550 public void readFromParcel(Parcel source) { 1551 if (source.readInt() != 0) { 1552 mainThumbnail = Bitmap.CREATOR.createFromParcel(source); 1553 } else { 1554 mainThumbnail = null; 1555 } 1556 if (source.readInt() != 0) { 1557 thumbnailFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(source); 1558 } else { 1559 thumbnailFileDescriptor = null; 1560 } 1561 } 1562 1563 public static final Creator<TaskThumbnail> CREATOR = new Creator<TaskThumbnail>() { 1564 public TaskThumbnail createFromParcel(Parcel source) { 1565 return new TaskThumbnail(source); 1566 } 1567 public TaskThumbnail[] newArray(int size) { 1568 return new TaskThumbnail[size]; 1569 } 1570 }; 1571 1572 private TaskThumbnail(Parcel source) { 1573 readFromParcel(source); 1574 } 1575 } 1576 1577 /** @hide */ 1578 public TaskThumbnail getTaskThumbnail(int id) throws SecurityException { 1579 try { 1580 return ActivityManagerNative.getDefault().getTaskThumbnail(id); 1581 } catch (RemoteException e) { 1582 // System dead, we will be dead too soon! 1583 return null; 1584 } 1585 } 1586 1587 /** @hide */ 1588 public boolean isInHomeStack(int taskId) { 1589 try { 1590 return ActivityManagerNative.getDefault().isInHomeStack(taskId); 1591 } catch (RemoteException e) { 1592 // System dead, we will be dead too soon! 1593 return false; 1594 } 1595 } 1596 1597 /** 1598 * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" 1599 * activity along with the task, so it is positioned immediately behind 1600 * the task. 1601 */ 1602 public static final int MOVE_TASK_WITH_HOME = 0x00000001; 1603 1604 /** 1605 * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a 1606 * user-instigated action, so the current activity will not receive a 1607 * hint that the user is leaving. 1608 */ 1609 public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; 1610 1611 /** 1612 * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} 1613 * with a null options argument. 1614 * 1615 * @param taskId The identifier of the task to be moved, as found in 1616 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1617 * @param flags Additional operational flags, 0 or more of 1618 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1619 */ 1620 public void moveTaskToFront(int taskId, int flags) { 1621 moveTaskToFront(taskId, flags, null); 1622 } 1623 1624 /** 1625 * Ask that the task associated with a given task ID be moved to the 1626 * front of the stack, so it is now visible to the user. Requires that 1627 * the caller hold permission {@link android.Manifest.permission#REORDER_TASKS} 1628 * or a SecurityException will be thrown. 1629 * 1630 * @param taskId The identifier of the task to be moved, as found in 1631 * {@link RunningTaskInfo} or {@link RecentTaskInfo}. 1632 * @param flags Additional operational flags, 0 or more of 1633 * {@link #MOVE_TASK_WITH_HOME}, {@link #MOVE_TASK_NO_USER_ACTION}. 1634 * @param options Additional options for the operation, either null or 1635 * as per {@link Context#startActivity(Intent, android.os.Bundle) 1636 * Context.startActivity(Intent, Bundle)}. 1637 */ 1638 public void moveTaskToFront(int taskId, int flags, Bundle options) { 1639 try { 1640 ActivityManagerNative.getDefault().moveTaskToFront(taskId, flags, options); 1641 } catch (RemoteException e) { 1642 // System dead, we will be dead too soon! 1643 } 1644 } 1645 1646 /** 1647 * Information you can retrieve about a particular Service that is 1648 * currently running in the system. 1649 */ 1650 public static class RunningServiceInfo implements Parcelable { 1651 /** 1652 * The service component. 1653 */ 1654 public ComponentName service; 1655 1656 /** 1657 * If non-zero, this is the process the service is running in. 1658 */ 1659 public int pid; 1660 1661 /** 1662 * The UID that owns this service. 1663 */ 1664 public int uid; 1665 1666 /** 1667 * The name of the process this service runs in. 1668 */ 1669 public String process; 1670 1671 /** 1672 * Set to true if the service has asked to run as a foreground process. 1673 */ 1674 public boolean foreground; 1675 1676 /** 1677 * The time when the service was first made active, either by someone 1678 * starting or binding to it. This 1679 * is in units of {@link android.os.SystemClock#elapsedRealtime()}. 1680 */ 1681 public long activeSince; 1682 1683 /** 1684 * Set to true if this service has been explicitly started. 1685 */ 1686 public boolean started; 1687 1688 /** 1689 * Number of clients connected to the service. 1690 */ 1691 public int clientCount; 1692 1693 /** 1694 * Number of times the service's process has crashed while the service 1695 * is running. 1696 */ 1697 public int crashCount; 1698 1699 /** 1700 * The time when there was last activity in the service (either 1701 * explicit requests to start it or clients binding to it). This 1702 * is in units of {@link android.os.SystemClock#uptimeMillis()}. 1703 */ 1704 public long lastActivityTime; 1705 1706 /** 1707 * If non-zero, this service is not currently running, but scheduled to 1708 * restart at the given time. 1709 */ 1710 public long restarting; 1711 1712 /** 1713 * Bit for {@link #flags}: set if this service has been 1714 * explicitly started. 1715 */ 1716 public static final int FLAG_STARTED = 1<<0; 1717 1718 /** 1719 * Bit for {@link #flags}: set if the service has asked to 1720 * run as a foreground process. 1721 */ 1722 public static final int FLAG_FOREGROUND = 1<<1; 1723 1724 /** 1725 * Bit for {@link #flags): set if the service is running in a 1726 * core system process. 1727 */ 1728 public static final int FLAG_SYSTEM_PROCESS = 1<<2; 1729 1730 /** 1731 * Bit for {@link #flags): set if the service is running in a 1732 * persistent process. 1733 */ 1734 public static final int FLAG_PERSISTENT_PROCESS = 1<<3; 1735 1736 /** 1737 * Running flags. 1738 */ 1739 public int flags; 1740 1741 /** 1742 * For special services that are bound to by system code, this is 1743 * the package that holds the binding. 1744 */ 1745 public String clientPackage; 1746 1747 /** 1748 * For special services that are bound to by system code, this is 1749 * a string resource providing a user-visible label for who the 1750 * client is. 1751 */ 1752 public int clientLabel; 1753 1754 public RunningServiceInfo() { 1755 } 1756 1757 public int describeContents() { 1758 return 0; 1759 } 1760 1761 public void writeToParcel(Parcel dest, int flags) { 1762 ComponentName.writeToParcel(service, dest); 1763 dest.writeInt(pid); 1764 dest.writeInt(uid); 1765 dest.writeString(process); 1766 dest.writeInt(foreground ? 1 : 0); 1767 dest.writeLong(activeSince); 1768 dest.writeInt(started ? 1 : 0); 1769 dest.writeInt(clientCount); 1770 dest.writeInt(crashCount); 1771 dest.writeLong(lastActivityTime); 1772 dest.writeLong(restarting); 1773 dest.writeInt(this.flags); 1774 dest.writeString(clientPackage); 1775 dest.writeInt(clientLabel); 1776 } 1777 1778 public void readFromParcel(Parcel source) { 1779 service = ComponentName.readFromParcel(source); 1780 pid = source.readInt(); 1781 uid = source.readInt(); 1782 process = source.readString(); 1783 foreground = source.readInt() != 0; 1784 activeSince = source.readLong(); 1785 started = source.readInt() != 0; 1786 clientCount = source.readInt(); 1787 crashCount = source.readInt(); 1788 lastActivityTime = source.readLong(); 1789 restarting = source.readLong(); 1790 flags = source.readInt(); 1791 clientPackage = source.readString(); 1792 clientLabel = source.readInt(); 1793 } 1794 1795 public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { 1796 public RunningServiceInfo createFromParcel(Parcel source) { 1797 return new RunningServiceInfo(source); 1798 } 1799 public RunningServiceInfo[] newArray(int size) { 1800 return new RunningServiceInfo[size]; 1801 } 1802 }; 1803 1804 private RunningServiceInfo(Parcel source) { 1805 readFromParcel(source); 1806 } 1807 } 1808 1809 /** 1810 * Return a list of the services that are currently running. 1811 * 1812 * <p><b>Note: this method is only intended for debugging or implementing 1813 * service management type user interfaces.</b></p> 1814 * 1815 * @param maxNum The maximum number of entries to return in the list. The 1816 * actual number returned may be smaller, depending on how many services 1817 * are running. 1818 * 1819 * @return Returns a list of RunningServiceInfo records describing each of 1820 * the running tasks. 1821 */ 1822 public List<RunningServiceInfo> getRunningServices(int maxNum) 1823 throws SecurityException { 1824 try { 1825 return ActivityManagerNative.getDefault() 1826 .getServices(maxNum, 0); 1827 } catch (RemoteException e) { 1828 // System dead, we will be dead too soon! 1829 return null; 1830 } 1831 } 1832 1833 /** 1834 * Returns a PendingIntent you can start to show a control panel for the 1835 * given running service. If the service does not have a control panel, 1836 * null is returned. 1837 */ 1838 public PendingIntent getRunningServiceControlPanel(ComponentName service) 1839 throws SecurityException { 1840 try { 1841 return ActivityManagerNative.getDefault() 1842 .getRunningServiceControlPanel(service); 1843 } catch (RemoteException e) { 1844 // System dead, we will be dead too soon! 1845 return null; 1846 } 1847 } 1848 1849 /** 1850 * Information you can retrieve about the available memory through 1851 * {@link ActivityManager#getMemoryInfo}. 1852 */ 1853 public static class MemoryInfo implements Parcelable { 1854 /** 1855 * The available memory on the system. This number should not 1856 * be considered absolute: due to the nature of the kernel, a significant 1857 * portion of this memory is actually in use and needed for the overall 1858 * system to run well. 1859 */ 1860 public long availMem; 1861 1862 /** 1863 * The total memory accessible by the kernel. This is basically the 1864 * RAM size of the device, not including below-kernel fixed allocations 1865 * like DMA buffers, RAM for the baseband CPU, etc. 1866 */ 1867 public long totalMem; 1868 1869 /** 1870 * The threshold of {@link #availMem} at which we consider memory to be 1871 * low and start killing background services and other non-extraneous 1872 * processes. 1873 */ 1874 public long threshold; 1875 1876 /** 1877 * Set to true if the system considers itself to currently be in a low 1878 * memory situation. 1879 */ 1880 public boolean lowMemory; 1881 1882 /** @hide */ 1883 public long hiddenAppThreshold; 1884 /** @hide */ 1885 public long secondaryServerThreshold; 1886 /** @hide */ 1887 public long visibleAppThreshold; 1888 /** @hide */ 1889 public long foregroundAppThreshold; 1890 1891 public MemoryInfo() { 1892 } 1893 1894 public int describeContents() { 1895 return 0; 1896 } 1897 1898 public void writeToParcel(Parcel dest, int flags) { 1899 dest.writeLong(availMem); 1900 dest.writeLong(totalMem); 1901 dest.writeLong(threshold); 1902 dest.writeInt(lowMemory ? 1 : 0); 1903 dest.writeLong(hiddenAppThreshold); 1904 dest.writeLong(secondaryServerThreshold); 1905 dest.writeLong(visibleAppThreshold); 1906 dest.writeLong(foregroundAppThreshold); 1907 } 1908 1909 public void readFromParcel(Parcel source) { 1910 availMem = source.readLong(); 1911 totalMem = source.readLong(); 1912 threshold = source.readLong(); 1913 lowMemory = source.readInt() != 0; 1914 hiddenAppThreshold = source.readLong(); 1915 secondaryServerThreshold = source.readLong(); 1916 visibleAppThreshold = source.readLong(); 1917 foregroundAppThreshold = source.readLong(); 1918 } 1919 1920 public static final Creator<MemoryInfo> CREATOR 1921 = new Creator<MemoryInfo>() { 1922 public MemoryInfo createFromParcel(Parcel source) { 1923 return new MemoryInfo(source); 1924 } 1925 public MemoryInfo[] newArray(int size) { 1926 return new MemoryInfo[size]; 1927 } 1928 }; 1929 1930 private MemoryInfo(Parcel source) { 1931 readFromParcel(source); 1932 } 1933 } 1934 1935 /** 1936 * Return general information about the memory state of the system. This 1937 * can be used to help decide how to manage your own memory, though note 1938 * that polling is not recommended and 1939 * {@link android.content.ComponentCallbacks2#onTrimMemory(int) 1940 * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. 1941 * Also see {@link #getMyMemoryState} for how to retrieve the current trim 1942 * level of your process as needed, which gives a better hint for how to 1943 * manage its memory. 1944 */ 1945 public void getMemoryInfo(MemoryInfo outInfo) { 1946 try { 1947 ActivityManagerNative.getDefault().getMemoryInfo(outInfo); 1948 } catch (RemoteException e) { 1949 } 1950 } 1951 1952 /** 1953 * Information you can retrieve about an ActivityStack in the system. 1954 * @hide 1955 */ 1956 public static class StackInfo implements Parcelable { 1957 public int stackId; 1958 public Rect bounds = new Rect(); 1959 public int[] taskIds; 1960 public String[] taskNames; 1961 public Rect[] taskBounds; 1962 public int displayId; 1963 1964 @Override 1965 public int describeContents() { 1966 return 0; 1967 } 1968 1969 @Override 1970 public void writeToParcel(Parcel dest, int flags) { 1971 dest.writeInt(stackId); 1972 dest.writeInt(bounds.left); 1973 dest.writeInt(bounds.top); 1974 dest.writeInt(bounds.right); 1975 dest.writeInt(bounds.bottom); 1976 dest.writeIntArray(taskIds); 1977 dest.writeStringArray(taskNames); 1978 final int boundsCount = taskBounds == null ? 0 : taskBounds.length; 1979 dest.writeInt(boundsCount); 1980 for (int i = 0; i < boundsCount; i++) { 1981 dest.writeInt(taskBounds[i].left); 1982 dest.writeInt(taskBounds[i].top); 1983 dest.writeInt(taskBounds[i].right); 1984 dest.writeInt(taskBounds[i].bottom); 1985 } 1986 dest.writeInt(displayId); 1987 } 1988 1989 public void readFromParcel(Parcel source) { 1990 stackId = source.readInt(); 1991 bounds = new Rect( 1992 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 1993 taskIds = source.createIntArray(); 1994 taskNames = source.createStringArray(); 1995 final int boundsCount = source.readInt(); 1996 if (boundsCount > 0) { 1997 taskBounds = new Rect[boundsCount]; 1998 for (int i = 0; i < boundsCount; i++) { 1999 taskBounds[i] = new Rect(); 2000 taskBounds[i].set( 2001 source.readInt(), source.readInt(), source.readInt(), source.readInt()); 2002 } 2003 } else { 2004 taskBounds = null; 2005 } 2006 displayId = source.readInt(); 2007 } 2008 2009 public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { 2010 @Override 2011 public StackInfo createFromParcel(Parcel source) { 2012 return new StackInfo(source); 2013 } 2014 @Override 2015 public StackInfo[] newArray(int size) { 2016 return new StackInfo[size]; 2017 } 2018 }; 2019 2020 public StackInfo() { 2021 } 2022 2023 private StackInfo(Parcel source) { 2024 readFromParcel(source); 2025 } 2026 2027 public String toString(String prefix) { 2028 StringBuilder sb = new StringBuilder(256); 2029 sb.append(prefix); sb.append("Stack id="); sb.append(stackId); 2030 sb.append(" bounds="); sb.append(bounds.toShortString()); 2031 sb.append(" displayId="); sb.append(displayId); 2032 sb.append("\n"); 2033 prefix = prefix + " "; 2034 for (int i = 0; i < taskIds.length; ++i) { 2035 sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); 2036 sb.append(": "); sb.append(taskNames[i]); 2037 if (taskBounds != null) { 2038 sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); 2039 } 2040 sb.append("\n"); 2041 } 2042 return sb.toString(); 2043 } 2044 2045 @Override 2046 public String toString() { 2047 return toString(""); 2048 } 2049 } 2050 2051 /** 2052 * @hide 2053 */ 2054 public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { 2055 try { 2056 return ActivityManagerNative.getDefault().clearApplicationUserData(packageName, 2057 observer, UserHandle.myUserId()); 2058 } catch (RemoteException e) { 2059 return false; 2060 } 2061 } 2062 2063 /** 2064 * Permits an application to erase its own data from disk. This is equivalent to 2065 * the user choosing to clear the app's data from within the device settings UI. It 2066 * erases all dynamic data associated with the app -- its private data and data in its 2067 * private area on external storage -- but does not remove the installed application 2068 * itself, nor any OBB files. 2069 * 2070 * @return {@code true} if the application successfully requested that the application's 2071 * data be erased; {@code false} otherwise. 2072 */ 2073 public boolean clearApplicationUserData() { 2074 return clearApplicationUserData(mContext.getPackageName(), null); 2075 } 2076 2077 /** 2078 * Information you can retrieve about any processes that are in an error condition. 2079 */ 2080 public static class ProcessErrorStateInfo implements Parcelable { 2081 /** 2082 * Condition codes 2083 */ 2084 public static final int NO_ERROR = 0; 2085 public static final int CRASHED = 1; 2086 public static final int NOT_RESPONDING = 2; 2087 2088 /** 2089 * The condition that the process is in. 2090 */ 2091 public int condition; 2092 2093 /** 2094 * The process name in which the crash or error occurred. 2095 */ 2096 public String processName; 2097 2098 /** 2099 * The pid of this process; 0 if none 2100 */ 2101 public int pid; 2102 2103 /** 2104 * The kernel user-ID that has been assigned to this process; 2105 * currently this is not a unique ID (multiple applications can have 2106 * the same uid). 2107 */ 2108 public int uid; 2109 2110 /** 2111 * The activity name associated with the error, if known. May be null. 2112 */ 2113 public String tag; 2114 2115 /** 2116 * A short message describing the error condition. 2117 */ 2118 public String shortMsg; 2119 2120 /** 2121 * A long message describing the error condition. 2122 */ 2123 public String longMsg; 2124 2125 /** 2126 * The stack trace where the error originated. May be null. 2127 */ 2128 public String stackTrace; 2129 2130 /** 2131 * to be deprecated: This value will always be null. 2132 */ 2133 public byte[] crashData = null; 2134 2135 public ProcessErrorStateInfo() { 2136 } 2137 2138 @Override 2139 public int describeContents() { 2140 return 0; 2141 } 2142 2143 @Override 2144 public void writeToParcel(Parcel dest, int flags) { 2145 dest.writeInt(condition); 2146 dest.writeString(processName); 2147 dest.writeInt(pid); 2148 dest.writeInt(uid); 2149 dest.writeString(tag); 2150 dest.writeString(shortMsg); 2151 dest.writeString(longMsg); 2152 dest.writeString(stackTrace); 2153 } 2154 2155 public void readFromParcel(Parcel source) { 2156 condition = source.readInt(); 2157 processName = source.readString(); 2158 pid = source.readInt(); 2159 uid = source.readInt(); 2160 tag = source.readString(); 2161 shortMsg = source.readString(); 2162 longMsg = source.readString(); 2163 stackTrace = source.readString(); 2164 } 2165 2166 public static final Creator<ProcessErrorStateInfo> CREATOR = 2167 new Creator<ProcessErrorStateInfo>() { 2168 public ProcessErrorStateInfo createFromParcel(Parcel source) { 2169 return new ProcessErrorStateInfo(source); 2170 } 2171 public ProcessErrorStateInfo[] newArray(int size) { 2172 return new ProcessErrorStateInfo[size]; 2173 } 2174 }; 2175 2176 private ProcessErrorStateInfo(Parcel source) { 2177 readFromParcel(source); 2178 } 2179 } 2180 2181 /** 2182 * Returns a list of any processes that are currently in an error condition. The result 2183 * will be null if all processes are running properly at this time. 2184 * 2185 * @return Returns a list of ProcessErrorStateInfo records, or null if there are no 2186 * current error conditions (it will not return an empty list). This list ordering is not 2187 * specified. 2188 */ 2189 public List<ProcessErrorStateInfo> getProcessesInErrorState() { 2190 try { 2191 return ActivityManagerNative.getDefault().getProcessesInErrorState(); 2192 } catch (RemoteException e) { 2193 return null; 2194 } 2195 } 2196 2197 /** 2198 * Information you can retrieve about a running process. 2199 */ 2200 public static class RunningAppProcessInfo implements Parcelable { 2201 /** 2202 * The name of the process that this object is associated with 2203 */ 2204 public String processName; 2205 2206 /** 2207 * The pid of this process; 0 if none 2208 */ 2209 public int pid; 2210 2211 /** 2212 * The user id of this process. 2213 */ 2214 public int uid; 2215 2216 /** 2217 * All packages that have been loaded into the process. 2218 */ 2219 public String pkgList[]; 2220 2221 /** 2222 * Constant for {@link #flags}: this is an app that is unable to 2223 * correctly save its state when going to the background, 2224 * so it can not be killed while in the background. 2225 * @hide 2226 */ 2227 public static final int FLAG_CANT_SAVE_STATE = 1<<0; 2228 2229 /** 2230 * Constant for {@link #flags}: this process is associated with a 2231 * persistent system app. 2232 * @hide 2233 */ 2234 public static final int FLAG_PERSISTENT = 1<<1; 2235 2236 /** 2237 * Constant for {@link #flags}: this process is associated with a 2238 * persistent system app. 2239 * @hide 2240 */ 2241 public static final int FLAG_HAS_ACTIVITIES = 1<<2; 2242 2243 /** 2244 * Flags of information. May be any of 2245 * {@link #FLAG_CANT_SAVE_STATE}. 2246 * @hide 2247 */ 2248 public int flags; 2249 2250 /** 2251 * Last memory trim level reported to the process: corresponds to 2252 * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) 2253 * ComponentCallbacks2.onTrimMemory(int)}. 2254 */ 2255 public int lastTrimLevel; 2256 2257 /** 2258 * Constant for {@link #importance}: This process is running the 2259 * foreground UI; that is, it is the thing currently at the top of the screen 2260 * that the user is interacting with. 2261 */ 2262 public static final int IMPORTANCE_FOREGROUND = 100; 2263 2264 /** 2265 * Constant for {@link #importance}: This process is running a foreground 2266 * service, for example to perform music playback even while the user is 2267 * not immediately in the app. This generally indicates that the process 2268 * is doing something the user actively cares about. 2269 */ 2270 public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; 2271 2272 /** 2273 * Constant for {@link #importance}: This process is running the foreground 2274 * UI, but the device is asleep so it is not visible to the user. This means 2275 * the user is not really aware of the process, because they can not see or 2276 * interact with it, but it is quite important because it what they expect to 2277 * return to once unlocking the device. 2278 */ 2279 public static final int IMPORTANCE_TOP_SLEEPING = 150; 2280 2281 /** 2282 * Constant for {@link #importance}: This process is running something 2283 * that is actively visible to the user, though not in the immediate 2284 * foreground. This may be running a window that is behind the current 2285 * foreground (so paused and with its state saved, not interacting with 2286 * the user, but visible to them to some degree); it may also be running 2287 * other services under the system's control that it inconsiders important. 2288 */ 2289 public static final int IMPORTANCE_VISIBLE = 200; 2290 2291 /** 2292 * Constant for {@link #importance}: This process is not something the user 2293 * is directly aware of, but is otherwise perceptable to them to some degree. 2294 */ 2295 public static final int IMPORTANCE_PERCEPTIBLE = 130; 2296 2297 /** 2298 * Constant for {@link #importance}: This process is running an 2299 * application that can not save its state, and thus can't be killed 2300 * while in the background. 2301 * @hide 2302 */ 2303 public static final int IMPORTANCE_CANT_SAVE_STATE = 170; 2304 2305 /** 2306 * Constant for {@link #importance}: This process is contains services 2307 * that should remain running. These are background services apps have 2308 * started, not something the user is aware of, so they may be killed by 2309 * the system relatively freely (though it is generally desired that they 2310 * stay running as long as they want to). 2311 */ 2312 public static final int IMPORTANCE_SERVICE = 300; 2313 2314 /** 2315 * Constant for {@link #importance}: This process process contains 2316 * background code that is expendable. 2317 */ 2318 public static final int IMPORTANCE_BACKGROUND = 400; 2319 2320 /** 2321 * Constant for {@link #importance}: This process is empty of any 2322 * actively running code. 2323 */ 2324 public static final int IMPORTANCE_EMPTY = 500; 2325 2326 /** 2327 * Constant for {@link #importance}: This process does not exist. 2328 */ 2329 public static final int IMPORTANCE_GONE = 1000; 2330 2331 /** @hide */ 2332 public static int procStateToImportance(int procState) { 2333 if (procState == PROCESS_STATE_NONEXISTENT) { 2334 return IMPORTANCE_GONE; 2335 } else if (procState >= PROCESS_STATE_HOME) { 2336 return IMPORTANCE_BACKGROUND; 2337 } else if (procState >= PROCESS_STATE_SERVICE) { 2338 return IMPORTANCE_SERVICE; 2339 } else if (procState > PROCESS_STATE_HEAVY_WEIGHT) { 2340 return IMPORTANCE_CANT_SAVE_STATE; 2341 } else if (procState >= PROCESS_STATE_IMPORTANT_BACKGROUND) { 2342 return IMPORTANCE_PERCEPTIBLE; 2343 } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { 2344 return IMPORTANCE_VISIBLE; 2345 } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { 2346 return IMPORTANCE_TOP_SLEEPING; 2347 } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { 2348 return IMPORTANCE_FOREGROUND_SERVICE; 2349 } else { 2350 return IMPORTANCE_FOREGROUND; 2351 } 2352 } 2353 2354 /** 2355 * The relative importance level that the system places on this 2356 * process. May be one of {@link #IMPORTANCE_FOREGROUND}, 2357 * {@link #IMPORTANCE_VISIBLE}, {@link #IMPORTANCE_SERVICE}, 2358 * {@link #IMPORTANCE_BACKGROUND}, or {@link #IMPORTANCE_EMPTY}. These 2359 * constants are numbered so that "more important" values are always 2360 * smaller than "less important" values. 2361 */ 2362 public int importance; 2363 2364 /** 2365 * An additional ordering within a particular {@link #importance} 2366 * category, providing finer-grained information about the relative 2367 * utility of processes within a category. This number means nothing 2368 * except that a smaller values are more recently used (and thus 2369 * more important). Currently an LRU value is only maintained for 2370 * the {@link #IMPORTANCE_BACKGROUND} category, though others may 2371 * be maintained in the future. 2372 */ 2373 public int lru; 2374 2375 /** 2376 * Constant for {@link #importanceReasonCode}: nothing special has 2377 * been specified for the reason for this level. 2378 */ 2379 public static final int REASON_UNKNOWN = 0; 2380 2381 /** 2382 * Constant for {@link #importanceReasonCode}: one of the application's 2383 * content providers is being used by another process. The pid of 2384 * the client process is in {@link #importanceReasonPid} and the 2385 * target provider in this process is in 2386 * {@link #importanceReasonComponent}. 2387 */ 2388 public static final int REASON_PROVIDER_IN_USE = 1; 2389 2390 /** 2391 * Constant for {@link #importanceReasonCode}: one of the application's 2392 * content providers is being used by another process. The pid of 2393 * the client process is in {@link #importanceReasonPid} and the 2394 * target provider in this process is in 2395 * {@link #importanceReasonComponent}. 2396 */ 2397 public static final int REASON_SERVICE_IN_USE = 2; 2398 2399 /** 2400 * The reason for {@link #importance}, if any. 2401 */ 2402 public int importanceReasonCode; 2403 2404 /** 2405 * For the specified values of {@link #importanceReasonCode}, this 2406 * is the process ID of the other process that is a client of this 2407 * process. This will be 0 if no other process is using this one. 2408 */ 2409 public int importanceReasonPid; 2410 2411 /** 2412 * For the specified values of {@link #importanceReasonCode}, this 2413 * is the name of the component that is being used in this process. 2414 */ 2415 public ComponentName importanceReasonComponent; 2416 2417 /** 2418 * When {@link #importanceReasonPid} is non-0, this is the importance 2419 * of the other pid. @hide 2420 */ 2421 public int importanceReasonImportance; 2422 2423 /** 2424 * Current process state, as per PROCESS_STATE_* constants. 2425 * @hide 2426 */ 2427 public int processState; 2428 2429 public RunningAppProcessInfo() { 2430 importance = IMPORTANCE_FOREGROUND; 2431 importanceReasonCode = REASON_UNKNOWN; 2432 processState = PROCESS_STATE_IMPORTANT_FOREGROUND; 2433 } 2434 2435 public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { 2436 processName = pProcessName; 2437 pid = pPid; 2438 pkgList = pArr; 2439 } 2440 2441 public int describeContents() { 2442 return 0; 2443 } 2444 2445 public void writeToParcel(Parcel dest, int flags) { 2446 dest.writeString(processName); 2447 dest.writeInt(pid); 2448 dest.writeInt(uid); 2449 dest.writeStringArray(pkgList); 2450 dest.writeInt(this.flags); 2451 dest.writeInt(lastTrimLevel); 2452 dest.writeInt(importance); 2453 dest.writeInt(lru); 2454 dest.writeInt(importanceReasonCode); 2455 dest.writeInt(importanceReasonPid); 2456 ComponentName.writeToParcel(importanceReasonComponent, dest); 2457 dest.writeInt(importanceReasonImportance); 2458 dest.writeInt(processState); 2459 } 2460 2461 public void readFromParcel(Parcel source) { 2462 processName = source.readString(); 2463 pid = source.readInt(); 2464 uid = source.readInt(); 2465 pkgList = source.readStringArray(); 2466 flags = source.readInt(); 2467 lastTrimLevel = source.readInt(); 2468 importance = source.readInt(); 2469 lru = source.readInt(); 2470 importanceReasonCode = source.readInt(); 2471 importanceReasonPid = source.readInt(); 2472 importanceReasonComponent = ComponentName.readFromParcel(source); 2473 importanceReasonImportance = source.readInt(); 2474 processState = source.readInt(); 2475 } 2476 2477 public static final Creator<RunningAppProcessInfo> CREATOR = 2478 new Creator<RunningAppProcessInfo>() { 2479 public RunningAppProcessInfo createFromParcel(Parcel source) { 2480 return new RunningAppProcessInfo(source); 2481 } 2482 public RunningAppProcessInfo[] newArray(int size) { 2483 return new RunningAppProcessInfo[size]; 2484 } 2485 }; 2486 2487 private RunningAppProcessInfo(Parcel source) { 2488 readFromParcel(source); 2489 } 2490 } 2491 2492 /** 2493 * Returns a list of application processes installed on external media 2494 * that are running on the device. 2495 * 2496 * <p><b>Note: this method is only intended for debugging or building 2497 * a user-facing process management UI.</b></p> 2498 * 2499 * @return Returns a list of ApplicationInfo records, or null if none 2500 * This list ordering is not specified. 2501 * @hide 2502 */ 2503 public List<ApplicationInfo> getRunningExternalApplications() { 2504 try { 2505 return ActivityManagerNative.getDefault().getRunningExternalApplications(); 2506 } catch (RemoteException e) { 2507 return null; 2508 } 2509 } 2510 2511 /** 2512 * Sets the memory trim mode for a process and schedules a memory trim operation. 2513 * 2514 * <p><b>Note: this method is only intended for testing framework.</b></p> 2515 * 2516 * @return Returns true if successful. 2517 * @hide 2518 */ 2519 public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { 2520 try { 2521 return ActivityManagerNative.getDefault().setProcessMemoryTrimLevel(process, userId, 2522 level); 2523 } catch (RemoteException e) { 2524 return false; 2525 } 2526 } 2527 2528 /** 2529 * Returns a list of application processes that are running on the device. 2530 * 2531 * <p><b>Note: this method is only intended for debugging or building 2532 * a user-facing process management UI.</b></p> 2533 * 2534 * @return Returns a list of RunningAppProcessInfo records, or null if there are no 2535 * running processes (it will not return an empty list). This list ordering is not 2536 * specified. 2537 */ 2538 public List<RunningAppProcessInfo> getRunningAppProcesses() { 2539 try { 2540 return ActivityManagerNative.getDefault().getRunningAppProcesses(); 2541 } catch (RemoteException e) { 2542 return null; 2543 } 2544 } 2545 2546 /** 2547 * Return the importance of a given package name, based on the processes that are 2548 * currently running. The return value is one of the importance constants defined 2549 * in {@link RunningAppProcessInfo}, giving you the highest importance of all the 2550 * processes that this package has code running inside of. If there are no processes 2551 * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. 2552 * @hide 2553 */ 2554 @SystemApi 2555 public int getPackageImportance(String packageName) { 2556 try { 2557 int procState = ActivityManagerNative.getDefault().getPackageProcessState(packageName, 2558 mContext.getOpPackageName()); 2559 return RunningAppProcessInfo.procStateToImportance(procState); 2560 } catch (RemoteException e) { 2561 return RunningAppProcessInfo.IMPORTANCE_GONE; 2562 } 2563 } 2564 2565 /** 2566 * Return global memory state information for the calling process. This 2567 * does not fill in all fields of the {@link RunningAppProcessInfo}. The 2568 * only fields that will be filled in are 2569 * {@link RunningAppProcessInfo#pid}, 2570 * {@link RunningAppProcessInfo#uid}, 2571 * {@link RunningAppProcessInfo#lastTrimLevel}, 2572 * {@link RunningAppProcessInfo#importance}, 2573 * {@link RunningAppProcessInfo#lru}, and 2574 * {@link RunningAppProcessInfo#importanceReasonCode}. 2575 */ 2576 static public void getMyMemoryState(RunningAppProcessInfo outState) { 2577 try { 2578 ActivityManagerNative.getDefault().getMyMemoryState(outState); 2579 } catch (RemoteException e) { 2580 } 2581 } 2582 2583 /** 2584 * Return information about the memory usage of one or more processes. 2585 * 2586 * <p><b>Note: this method is only intended for debugging or building 2587 * a user-facing process management UI.</b></p> 2588 * 2589 * @param pids The pids of the processes whose memory usage is to be 2590 * retrieved. 2591 * @return Returns an array of memory information, one for each 2592 * requested pid. 2593 */ 2594 public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { 2595 try { 2596 return ActivityManagerNative.getDefault().getProcessMemoryInfo(pids); 2597 } catch (RemoteException e) { 2598 return null; 2599 } 2600 } 2601 2602 /** 2603 * @deprecated This is now just a wrapper for 2604 * {@link #killBackgroundProcesses(String)}; the previous behavior here 2605 * is no longer available to applications because it allows them to 2606 * break other applications by removing their alarms, stopping their 2607 * services, etc. 2608 */ 2609 @Deprecated 2610 public void restartPackage(String packageName) { 2611 killBackgroundProcesses(packageName); 2612 } 2613 2614 /** 2615 * Have the system immediately kill all background processes associated 2616 * with the given package. This is the same as the kernel killing those 2617 * processes to reclaim memory; the system will take care of restarting 2618 * these processes in the future as needed. 2619 * 2620 * <p>You must hold the permission 2621 * {@link android.Manifest.permission#KILL_BACKGROUND_PROCESSES} to be able to 2622 * call this method. 2623 * 2624 * @param packageName The name of the package whose processes are to 2625 * be killed. 2626 */ 2627 public void killBackgroundProcesses(String packageName) { 2628 try { 2629 ActivityManagerNative.getDefault().killBackgroundProcesses(packageName, 2630 UserHandle.myUserId()); 2631 } catch (RemoteException e) { 2632 } 2633 } 2634 2635 /** 2636 * Kills the specified UID. 2637 * @param uid The UID to kill. 2638 * @param reason The reason for the kill. 2639 * 2640 * @hide 2641 */ 2642 @RequiresPermission(Manifest.permission.KILL_UID) 2643 public void killUid(int uid, String reason) { 2644 try { 2645 ActivityManagerNative.getDefault().killUid(UserHandle.getAppId(uid), 2646 UserHandle.getUserId(uid), reason); 2647 } catch (RemoteException e) { 2648 Log.e(TAG, "Couldn't kill uid:" + uid, e); 2649 } 2650 } 2651 2652 /** 2653 * Have the system perform a force stop of everything associated with 2654 * the given application package. All processes that share its uid 2655 * will be killed, all services it has running stopped, all activities 2656 * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} 2657 * broadcast will be sent, so that any of its registered alarms can 2658 * be stopped, notifications removed, etc. 2659 * 2660 * <p>You must hold the permission 2661 * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to 2662 * call this method. 2663 * 2664 * @param packageName The name of the package to be stopped. 2665 * @param userId The user for which the running package is to be stopped. 2666 * 2667 * @hide This is not available to third party applications due to 2668 * it allowing them to break other applications by stopping their 2669 * services, removing their alarms, etc. 2670 */ 2671 public void forceStopPackageAsUser(String packageName, int userId) { 2672 try { 2673 ActivityManagerNative.getDefault().forceStopPackage(packageName, userId); 2674 } catch (RemoteException e) { 2675 } 2676 } 2677 2678 /** 2679 * @see #forceStopPackageAsUser(String, int) 2680 * @hide 2681 */ 2682 public void forceStopPackage(String packageName) { 2683 forceStopPackageAsUser(packageName, UserHandle.myUserId()); 2684 } 2685 2686 /** 2687 * Get the device configuration attributes. 2688 */ 2689 public ConfigurationInfo getDeviceConfigurationInfo() { 2690 try { 2691 return ActivityManagerNative.getDefault().getDeviceConfigurationInfo(); 2692 } catch (RemoteException e) { 2693 } 2694 return null; 2695 } 2696 2697 /** 2698 * Get the preferred density of icons for the launcher. This is used when 2699 * custom drawables are created (e.g., for shortcuts). 2700 * 2701 * @return density in terms of DPI 2702 */ 2703 public int getLauncherLargeIconDensity() { 2704 final Resources res = mContext.getResources(); 2705 final int density = res.getDisplayMetrics().densityDpi; 2706 final int sw = res.getConfiguration().smallestScreenWidthDp; 2707 2708 if (sw < 600) { 2709 // Smaller than approx 7" tablets, use the regular icon size. 2710 return density; 2711 } 2712 2713 switch (density) { 2714 case DisplayMetrics.DENSITY_LOW: 2715 return DisplayMetrics.DENSITY_MEDIUM; 2716 case DisplayMetrics.DENSITY_MEDIUM: 2717 return DisplayMetrics.DENSITY_HIGH; 2718 case DisplayMetrics.DENSITY_TV: 2719 return DisplayMetrics.DENSITY_XHIGH; 2720 case DisplayMetrics.DENSITY_HIGH: 2721 return DisplayMetrics.DENSITY_XHIGH; 2722 case DisplayMetrics.DENSITY_XHIGH: 2723 return DisplayMetrics.DENSITY_XXHIGH; 2724 case DisplayMetrics.DENSITY_XXHIGH: 2725 return DisplayMetrics.DENSITY_XHIGH * 2; 2726 default: 2727 // The density is some abnormal value. Return some other 2728 // abnormal value that is a reasonable scaling of it. 2729 return (int)((density*1.5f)+.5f); 2730 } 2731 } 2732 2733 /** 2734 * Get the preferred launcher icon size. This is used when custom drawables 2735 * are created (e.g., for shortcuts). 2736 * 2737 * @return dimensions of square icons in terms of pixels 2738 */ 2739 public int getLauncherLargeIconSize() { 2740 return getLauncherLargeIconSizeInner(mContext); 2741 } 2742 2743 static int getLauncherLargeIconSizeInner(Context context) { 2744 final Resources res = context.getResources(); 2745 final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); 2746 final int sw = res.getConfiguration().smallestScreenWidthDp; 2747 2748 if (sw < 600) { 2749 // Smaller than approx 7" tablets, use the regular icon size. 2750 return size; 2751 } 2752 2753 final int density = res.getDisplayMetrics().densityDpi; 2754 2755 switch (density) { 2756 case DisplayMetrics.DENSITY_LOW: 2757 return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; 2758 case DisplayMetrics.DENSITY_MEDIUM: 2759 return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; 2760 case DisplayMetrics.DENSITY_TV: 2761 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2762 case DisplayMetrics.DENSITY_HIGH: 2763 return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; 2764 case DisplayMetrics.DENSITY_XHIGH: 2765 return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; 2766 case DisplayMetrics.DENSITY_XXHIGH: 2767 return (size * DisplayMetrics.DENSITY_XHIGH*2) / DisplayMetrics.DENSITY_XXHIGH; 2768 default: 2769 // The density is some abnormal value. Return some other 2770 // abnormal value that is a reasonable scaling of it. 2771 return (int)((size*1.5f) + .5f); 2772 } 2773 } 2774 2775 /** 2776 * Returns "true" if the user interface is currently being messed with 2777 * by a monkey. 2778 */ 2779 public static boolean isUserAMonkey() { 2780 try { 2781 return ActivityManagerNative.getDefault().isUserAMonkey(); 2782 } catch (RemoteException e) { 2783 } 2784 return false; 2785 } 2786 2787 /** 2788 * Returns "true" if device is running in a test harness. 2789 */ 2790 public static boolean isRunningInTestHarness() { 2791 return SystemProperties.getBoolean("ro.test_harness", false); 2792 } 2793 2794 /** 2795 * Returns the launch count of each installed package. 2796 * 2797 * @hide 2798 */ 2799 /*public Map<String, Integer> getAllPackageLaunchCounts() { 2800 try { 2801 IUsageStats usageStatsService = IUsageStats.Stub.asInterface( 2802 ServiceManager.getService("usagestats")); 2803 if (usageStatsService == null) { 2804 return new HashMap<String, Integer>(); 2805 } 2806 2807 UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( 2808 ActivityThread.currentPackageName()); 2809 if (allPkgUsageStats == null) { 2810 return new HashMap<String, Integer>(); 2811 } 2812 2813 Map<String, Integer> launchCounts = new HashMap<String, Integer>(); 2814 for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { 2815 launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); 2816 } 2817 2818 return launchCounts; 2819 } catch (RemoteException e) { 2820 Log.w(TAG, "Could not query launch counts", e); 2821 return new HashMap<String, Integer>(); 2822 } 2823 }*/ 2824 2825 /** @hide */ 2826 public static int checkComponentPermission(String permission, int uid, 2827 int owningUid, boolean exported) { 2828 // Root, system server get to do everything. 2829 final int appId = UserHandle.getAppId(uid); 2830 if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { 2831 return PackageManager.PERMISSION_GRANTED; 2832 } 2833 // Isolated processes don't get any permissions. 2834 if (UserHandle.isIsolated(uid)) { 2835 return PackageManager.PERMISSION_DENIED; 2836 } 2837 // If there is a uid that owns whatever is being accessed, it has 2838 // blanket access to it regardless of the permissions it requires. 2839 if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { 2840 return PackageManager.PERMISSION_GRANTED; 2841 } 2842 // If the target is not exported, then nobody else can get to it. 2843 if (!exported) { 2844 /* 2845 RuntimeException here = new RuntimeException("here"); 2846 here.fillInStackTrace(); 2847 Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, 2848 here); 2849 */ 2850 return PackageManager.PERMISSION_DENIED; 2851 } 2852 if (permission == null) { 2853 return PackageManager.PERMISSION_GRANTED; 2854 } 2855 try { 2856 return AppGlobals.getPackageManager() 2857 .checkUidPermission(permission, uid); 2858 } catch (RemoteException e) { 2859 // Should never happen, but if it does... deny! 2860 Slog.e(TAG, "PackageManager is dead?!?", e); 2861 } 2862 return PackageManager.PERMISSION_DENIED; 2863 } 2864 2865 /** @hide */ 2866 public static int checkUidPermission(String permission, int uid) { 2867 try { 2868 return AppGlobals.getPackageManager() 2869 .checkUidPermission(permission, uid); 2870 } catch (RemoteException e) { 2871 // Should never happen, but if it does... deny! 2872 Slog.e(TAG, "PackageManager is dead?!?", e); 2873 } 2874 return PackageManager.PERMISSION_DENIED; 2875 } 2876 2877 /** 2878 * @hide 2879 * Helper for dealing with incoming user arguments to system service calls. 2880 * Takes care of checking permissions and converting USER_CURRENT to the 2881 * actual current user. 2882 * 2883 * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). 2884 * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). 2885 * @param userId The user id argument supplied by the caller -- this is the user 2886 * they want to run as. 2887 * @param allowAll If true, we will allow USER_ALL. This means you must be prepared 2888 * to get a USER_ALL returned and deal with it correctly. If false, 2889 * an exception will be thrown if USER_ALL is supplied. 2890 * @param requireFull If true, the caller must hold 2891 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a 2892 * different user than their current process; otherwise they must hold 2893 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. 2894 * @param name Optional textual name of the incoming call; only for generating error messages. 2895 * @param callerPackage Optional package name of caller; only for error messages. 2896 * 2897 * @return Returns the user ID that the call should run as. Will always be a concrete 2898 * user number, unless <var>allowAll</var> is true in which case it could also be 2899 * USER_ALL. 2900 */ 2901 public static int handleIncomingUser(int callingPid, int callingUid, int userId, 2902 boolean allowAll, boolean requireFull, String name, String callerPackage) { 2903 if (UserHandle.getUserId(callingUid) == userId) { 2904 return userId; 2905 } 2906 try { 2907 return ActivityManagerNative.getDefault().handleIncomingUser(callingPid, 2908 callingUid, userId, allowAll, requireFull, name, callerPackage); 2909 } catch (RemoteException e) { 2910 throw new SecurityException("Failed calling activity manager", e); 2911 } 2912 } 2913 2914 /** 2915 * Gets the userId of the current foreground user. Requires system permissions. 2916 * @hide 2917 */ 2918 @SystemApi 2919 public static int getCurrentUser() { 2920 UserInfo ui; 2921 try { 2922 ui = ActivityManagerNative.getDefault().getCurrentUser(); 2923 return ui != null ? ui.id : 0; 2924 } catch (RemoteException e) { 2925 return 0; 2926 } 2927 } 2928 2929 /** 2930 * @param userid the user's id. Zero indicates the default user. 2931 * @hide 2932 */ 2933 public boolean switchUser(int userid) { 2934 try { 2935 return ActivityManagerNative.getDefault().switchUser(userid); 2936 } catch (RemoteException e) { 2937 return false; 2938 } 2939 } 2940 2941 /** 2942 * Return whether the given user is actively running. This means that 2943 * the user is in the "started" state, not "stopped" -- it is currently 2944 * allowed to run code through scheduled alarms, receiving broadcasts, 2945 * etc. A started user may be either the current foreground user or a 2946 * background user; the result here does not distinguish between the two. 2947 * @param userid the user's id. Zero indicates the default user. 2948 * @hide 2949 */ 2950 public boolean isUserRunning(int userid) { 2951 try { 2952 return ActivityManagerNative.getDefault().isUserRunning(userid, false); 2953 } catch (RemoteException e) { 2954 return false; 2955 } 2956 } 2957 2958 /** 2959 * Perform a system dump of various state associated with the given application 2960 * package name. This call blocks while the dump is being performed, so should 2961 * not be done on a UI thread. The data will be written to the given file 2962 * descriptor as text. An application must hold the 2963 * {@link android.Manifest.permission#DUMP} permission to make this call. 2964 * @param fd The file descriptor that the dump should be written to. The file 2965 * descriptor is <em>not</em> closed by this function; the caller continues to 2966 * own it. 2967 * @param packageName The name of the package that is to be dumped. 2968 */ 2969 public void dumpPackageState(FileDescriptor fd, String packageName) { 2970 dumpPackageStateStatic(fd, packageName); 2971 } 2972 2973 /** 2974 * @hide 2975 */ 2976 public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { 2977 FileOutputStream fout = new FileOutputStream(fd); 2978 PrintWriter pw = new FastPrintWriter(fout); 2979 dumpService(pw, fd, "package", new String[] { packageName }); 2980 pw.println(); 2981 dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { 2982 "-a", "package", packageName }); 2983 pw.println(); 2984 dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); 2985 pw.println(); 2986 dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); 2987 pw.println(); 2988 dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName }); 2989 pw.println(); 2990 dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); 2991 pw.flush(); 2992 } 2993 2994 private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { 2995 pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); 2996 IBinder service = ServiceManager.checkService(name); 2997 if (service == null) { 2998 pw.println(" (Service not found)"); 2999 return; 3000 } 3001 TransferPipe tp = null; 3002 try { 3003 pw.flush(); 3004 tp = new TransferPipe(); 3005 tp.setBufferPrefix(" "); 3006 service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); 3007 tp.go(fd, 10000); 3008 } catch (Throwable e) { 3009 if (tp != null) { 3010 tp.kill(); 3011 } 3012 pw.println("Failure dumping service:"); 3013 e.printStackTrace(pw); 3014 } 3015 } 3016 3017 /** 3018 * Request that the system start watching for the calling process to exceed a pss 3019 * size as given here. Once called, the system will look for any occasions where it 3020 * sees the associated process with a larger pss size and, when this happens, automatically 3021 * pull a heap dump from it and allow the user to share the data. Note that this request 3022 * continues running even if the process is killed and restarted. To remove the watch, 3023 * use {@link #clearWatchHeapLimit()}. 3024 * 3025 * <p>This API only work if the calling process has been marked as 3026 * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable 3027 * (userdebug or eng) build.</p> 3028 * 3029 * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly 3030 * handle heap limit reports themselves.</p> 3031 * 3032 * @param pssSize The size in bytes to set the limit at. 3033 */ 3034 public void setWatchHeapLimit(long pssSize) { 3035 try { 3036 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, pssSize, 3037 mContext.getPackageName()); 3038 } catch (RemoteException e) { 3039 } 3040 } 3041 3042 /** 3043 * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. 3044 * If your package has an activity handling this action, it will be launched with the 3045 * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to 3046 * match the activty must support this action and a MIME type of "*/*". 3047 */ 3048 public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; 3049 3050 /** 3051 * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. 3052 */ 3053 public void clearWatchHeapLimit() { 3054 try { 3055 ActivityManagerNative.getDefault().setDumpHeapDebugLimit(null, 0, 0, null); 3056 } catch (RemoteException e) { 3057 } 3058 } 3059 3060 /** 3061 * @hide 3062 */ 3063 public void startLockTaskMode(int taskId) { 3064 try { 3065 ActivityManagerNative.getDefault().startLockTaskMode(taskId); 3066 } catch (RemoteException e) { 3067 } 3068 } 3069 3070 /** 3071 * @hide 3072 */ 3073 public void stopLockTaskMode() { 3074 try { 3075 ActivityManagerNative.getDefault().stopLockTaskMode(); 3076 } catch (RemoteException e) { 3077 } 3078 } 3079 3080 /** 3081 * Return whether currently in lock task mode. When in this mode 3082 * no new tasks can be created or switched to. 3083 * 3084 * @see Activity#startLockTask() 3085 * 3086 * @deprecated Use {@link #getLockTaskModeState} instead. 3087 */ 3088 public boolean isInLockTaskMode() { 3089 return getLockTaskModeState() != LOCK_TASK_MODE_NONE; 3090 } 3091 3092 /** 3093 * Return the current state of task locking. The three possible outcomes 3094 * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} 3095 * and {@link #LOCK_TASK_MODE_PINNED}. 3096 * 3097 * @see Activity#startLockTask() 3098 */ 3099 public int getLockTaskModeState() { 3100 try { 3101 return ActivityManagerNative.getDefault().getLockTaskModeState(); 3102 } catch (RemoteException e) { 3103 return ActivityManager.LOCK_TASK_MODE_NONE; 3104 } 3105 } 3106 3107 /** 3108 * The AppTask allows you to manage your own application's tasks. 3109 * See {@link android.app.ActivityManager#getAppTasks()} 3110 */ 3111 public static class AppTask { 3112 private IAppTask mAppTaskImpl; 3113 3114 /** @hide */ 3115 public AppTask(IAppTask task) { 3116 mAppTaskImpl = task; 3117 } 3118 3119 /** 3120 * Finishes all activities in this task and removes it from the recent tasks list. 3121 */ 3122 public void finishAndRemoveTask() { 3123 try { 3124 mAppTaskImpl.finishAndRemoveTask(); 3125 } catch (RemoteException e) { 3126 Slog.e(TAG, "Invalid AppTask", e); 3127 } 3128 } 3129 3130 /** 3131 * Get the RecentTaskInfo associated with this task. 3132 * 3133 * @return The RecentTaskInfo for this task, or null if the task no longer exists. 3134 */ 3135 public RecentTaskInfo getTaskInfo() { 3136 try { 3137 return mAppTaskImpl.getTaskInfo(); 3138 } catch (RemoteException e) { 3139 Slog.e(TAG, "Invalid AppTask", e); 3140 return null; 3141 } 3142 } 3143 3144 /** 3145 * Bring this task to the foreground. If it contains activities, they will be 3146 * brought to the foreground with it and their instances re-created if needed. 3147 * If it doesn't contain activities, the root activity of the task will be 3148 * re-launched. 3149 */ 3150 public void moveToFront() { 3151 try { 3152 mAppTaskImpl.moveToFront(); 3153 } catch (RemoteException e) { 3154 Slog.e(TAG, "Invalid AppTask", e); 3155 } 3156 } 3157 3158 /** 3159 * Start an activity in this task. Brings the task to the foreground. If this task 3160 * is not currently active (that is, its id < 0), then a new activity for the given 3161 * Intent will be launched as the root of the task and the task brought to the 3162 * foreground. Otherwise, if this task is currently active and the Intent does not specify 3163 * an activity to launch in a new task, then a new activity for the given Intent will 3164 * be launched on top of the task and the task brought to the foreground. If this 3165 * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} 3166 * or would otherwise be launched in to a new task, then the activity not launched but 3167 * this task be brought to the foreground and a new intent delivered to the top 3168 * activity if appropriate. 3169 * 3170 * <p>In other words, you generally want to use an Intent here that does not specify 3171 * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, 3172 * and let the system do the right thing.</p> 3173 * 3174 * @param intent The Intent describing the new activity to be launched on the task. 3175 * @param options Optional launch options. 3176 * 3177 * @see Activity#startActivity(android.content.Intent, android.os.Bundle) 3178 */ 3179 public void startActivity(Context context, Intent intent, Bundle options) { 3180 ActivityThread thread = ActivityThread.currentActivityThread(); 3181 thread.getInstrumentation().execStartActivityFromAppTask(context, 3182 thread.getApplicationThread(), mAppTaskImpl, intent, options); 3183 } 3184 3185 /** 3186 * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root 3187 * Intent of this AppTask. 3188 * 3189 * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will 3190 * be set; otherwise, it will be cleared. 3191 */ 3192 public void setExcludeFromRecents(boolean exclude) { 3193 try { 3194 mAppTaskImpl.setExcludeFromRecents(exclude); 3195 } catch (RemoteException e) { 3196 Slog.e(TAG, "Invalid AppTask", e); 3197 } 3198 } 3199 } 3200} 3201