frameworks/base/services/java/com/android/server/SystemServer.java
private void startOtherServices(@NonNull TimingsTraceAndSlog t) {
...
t.traceBegin("StartWindowManagerService");
// WMS needs sensor service ready
mSystemServiceManager.startBootPhase(t, SystemService.PHASE_WAIT_FOR_SENSOR_SERVICE);
1. 调用WMS的main方法，传入inputManager，实例化PhoneWindowManager
wm = WindowManagerService.main(context, inputManager, !mFirstBoot, mOnlyCore,
new PhoneWindowManager(), mActivityManagerService.mActivityTaskManager);
2. 将WMS添加进ServiceManager，service名为"window"
ServiceManager.addService(Context.WINDOW_SERVICE, wm, /* allowIsolated= */ false,
DUMP_FLAG_PRIORITY_CRITICAL | DUMP_FLAG_PROTO);
ServiceManager.addService(Context.INPUT_SERVICE, inputManager,
/* allowIsolated= */ false, DUMP_FLAG_PRIORITY_CRITICAL);
t.traceEnd();
t.traceBegin("SetWindowManagerService");
3. 将WMS的实例传给AMS
mActivityManagerService.setWindowManager(wm);
t.traceEnd();
t.traceBegin("WindowManagerServiceOnInitReady");
wm.onInitReady();
t.traceEnd();
...
t.traceBegin("MakeDisplayReady");
try {
wm.displayReady();
} catch (Throwable e) {
reportWtf("making display ready", e);
}
t.traceEnd();
...
t.traceBegin("MakeWindowManagerServiceReady");
try {
wm.systemReady();
} catch (Throwable e) {
reportWtf("making Window Manager Service ready", e);
}
t.traceEnd();
...
t.traceBegin("MakeDisplayReady");
try {
wm.displayReady();
} catch (Throwable e) {
reportWtf("making display ready", e);
}
t.traceEnd();
frameworks/base/services/core/java/com/android/server/wm/WindowManagerService.java
public static WindowManagerService main(final Context context, final InputManagerService im,
final boolean showBootMsgs, final boolean onlyCore, WindowManagerPolicy policy,
ActivityTaskManagerService atm) {
1. 调用main， 实例化DisplayWindowSettingsProvider, 实例化SurfaceControl
实例化Surface，实例化SurfaceControl.Builder
return main(context, im, showBootMsgs, onlyCore, policy, atm,
new DisplayWindowSettingsProvider(), SurfaceControl.Transaction::new, Surface::new,
SurfaceControl.Builder::new);
}
/**
* Creates and returns an instance of the WindowManagerService. This call allows the caller
* to override factories that can be used to stub native calls during test.
*/
@VisibleForTesting
public static WindowManagerService main(final Context context, final InputManagerService im,
final boolean showBootMsgs, final boolean onlyCore, WindowManagerPolicy policy,
ActivityTaskManagerService atm, DisplayWindowSettingsProvider
displayWindowSettingsProvider, Supplier<SurfaceControl.Transaction> transactionFactory,
Supplier<Surface> surfaceFactory,
Function<SurfaceSession, SurfaceControl.Builder> surfaceControlFactory) {
2. 创建Thread，并实例化WMS
DisplayThread.getHandler().runWithScissors(() ->
sInstance = new WindowManagerService(context, im, showBootMsgs, onlyCore, policy,
atm, displayWindowSettingsProvider, transactionFactory, surfaceFactory,
surfaceControlFactory), 0);
return sInstance;
}frameworks/base/services/core/java/com/android/server/DisplayThread.java
DisplayThread.getHandler().runWithScissors
public final class DisplayThread extends ServiceThread {
private static DisplayThread sInstance;
private static Handler sHandler;
3. 实例化DisplayThread
private DisplayThread() {
// DisplayThread runs important stuff, but these are not as important as things running in
// AnimationThread. Thus, set the priority to one lower.
super("android.display", Process.THREAD_PRIORITY_DISPLAY + 1, false /*allowIo*/);
}
private static void ensureThreadLocked() {
if (sInstance == null) {
2. 实例化DisplayThread
sInstance = new DisplayThread();
4. 开启Thread
sInstance.start();
sInstance.getLooper().setTraceTag(Trace.TRACE_TAG_SYSTEM_SERVER);
5. 实例化Handler
sHandler = new Handler(sInstance.getLooper());
}
}
1. 调用getHandler
public static Handler getHandler() {
synchronized (DisplayThread.class) {
ensureThreadLocked();
return sHandler;
}
}
...frameworks/base/services/core/java/com/android/server/wm/WindowManagerService.java
WindowManagerService#WindowManagerService
private WindowManagerService(Context context, InputManagerService inputManager,
boolean showBootMsgs, boolean onlyCore, WindowManagerPolicy policy,
ActivityTaskManagerService atm, DisplayWindowSettingsProvider
displayWindowSettingsProvider, Supplier<SurfaceControl.Transaction> transactionFactory,
Supplier<Surface> surfaceFactory,
Function<SurfaceSession, SurfaceControl.Builder> surfaceControlFactory) {
installLock(this, INDEX_WINDOW);
mGlobalLock = atm.getGlobalLock();
mAtmService = atm;
mContext = context;
mIsPc = mContext.getPackageManager().hasSystemFeature(FEATURE_PC);
mAllowBootMessages = showBootMsgs;
mOnlyCore = onlyCore;
mLimitedAlphaCompositing = context.getResources().getBoolean(
com.android.internal.R.bool.config_sf_limitedAlpha);
mHasPermanentDpad = context.getResources().getBoolean(
com.android.internal.R.bool.config_hasPermanentDpad);
mInTouchMode = context.getResources().getBoolean(
com.android.internal.R.bool.config_defaultInTouchMode);
inputManager.setInTouchMode(mInTouchMode);
mDrawLockTimeoutMillis = context.getResources().getInteger(
com.android.internal.R.integer.config_drawLockTimeoutMillis);
mAllowAnimationsInLowPowerMode = context.getResources().getBoolean(
com.android.internal.R.bool.config_allowAnimationsInLowPowerMode);
mMaxUiWidth = context.getResources().getInteger(
com.android.internal.R.integer.config_maxUiWidth);
mDisableTransitionAnimation = context.getResources().getBoolean(
com.android.internal.R.bool.config_disableTransitionAnimation);
mPerDisplayFocusEnabled = context.getResources().getBoolean(
com.android.internal.R.bool.config_perDisplayFocusEnabled);
mAssistantOnTopOfDream = context.getResources().getBoolean(
com.android.internal.R.bool.config_assistantOnTopOfDream);
mLetterboxConfiguration = new LetterboxConfiguration(context);
mInputManager = inputManager; // Must be before createDisplayContentLocked.
mDisplayManagerInternal = LocalServices.getService(DisplayManagerInternal.class);
mSurfaceControlFactory = surfaceControlFactory;
mTransactionFactory = transactionFactory;
mSurfaceFactory = surfaceFactory;
mTransaction = mTransactionFactory.get();
mPolicy = policy;
//实例化WindowAnimator
mAnimator = new WindowAnimator(this);
//实例化RootWindowContainer
mRoot = new RootWindowContainer(this);
final ContentResolver resolver = context.getContentResolver();
mUseBLAST = Settings.Global.getInt(resolver,
Settings.Global.DEVELOPMENT_USE_BLAST_ADAPTER_VR, 1) == 1;
mSyncEngine = new BLASTSyncEngine(this);
//放置Windows和它们的surfaces
mWindowPlacerLocked = new WindowSurfacePlacer(this);
//APP快照
mTaskSnapshotController = new TaskSnapshotController(this);
mWindowTracing = WindowTracing.createDefaultAndStartLooper(this,
Choreographer.getInstance());
LocalServices.addService(WindowManagerPolicy.class, mPolicy);
mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE);
mKeyguardDisableHandler = KeyguardDisableHandler.create(mContext, mPolicy, mH);
mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
mPowerManagerInternal = LocalServices.getService(PowerManagerInternal.class);
if (mPowerManagerInternal != null) {
mPowerManagerInternal.registerLowPowerModeObserver(
new PowerManagerInternal.LowPowerModeListener() {
@Override
public int getServiceType() {
return ServiceType.ANIMATION;
}
@Override
public void onLowPowerModeChanged(PowerSaveState result) {
synchronized (mGlobalLock) {
final boolean enabled = result.batterySaverEnabled;
if (mAnimationsDisabled != enabled && !mAllowAnimationsInLowPowerMode) {
mAnimationsDisabled = enabled;
dispatchNewAnimatorScaleLocked(null);
}
}
}
});
mAnimationsDisabled = mPowerManagerInternal
.getLowPowerState(ServiceType.ANIMATION).batterySaverEnabled;
}
mScreenFrozenLock = mPowerManager.newWakeLock(
PowerManager.PARTIAL_WAKE_LOCK, "SCREEN_FROZEN");
mScreenFrozenLock.setReferenceCounted(false);
mDisplayNotificationController = new DisplayWindowListenerController(this);
mActivityManager = ActivityManager.getService();
mActivityTaskManager = ActivityTaskManager.getService();
mAmInternal = LocalServices.getService(ActivityManagerInternal.class);
mAtmInternal = LocalServices.getService(ActivityTaskManagerInternal.class);
mAppOps = (AppOpsManager)context.getSystemService(Context.APP_OPS_SERVICE);
AppOpsManager.OnOpChangedInternalListener opListener =
new AppOpsManager.OnOpChangedInternalListener() {
@Override public void onOpChanged(int op, String packageName) {
updateAppOpsState();
}
};
mAppOps.startWatchingMode(OP_SYSTEM_ALERT_WINDOW, null, opListener);
mAppOps.startWatchingMode(AppOpsManager.OP_TOAST_WINDOW, null, opListener);
mPmInternal = LocalServices.getService(PackageManagerInternal.class);
mTestUtilityService = LocalServices.getService(TestUtilityService.class);
final IntentFilter suspendPackagesFilter = new IntentFilter();
suspendPackagesFilter.addAction(Intent.ACTION_PACKAGES_SUSPENDED);
suspendPackagesFilter.addAction(Intent.ACTION_PACKAGES_UNSUSPENDED);
context.registerReceiverAsUser(new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String[] affectedPackages =
intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
final boolean suspended =
Intent.ACTION_PACKAGES_SUSPENDED.equals(intent.getAction());
updateHiddenWhileSuspendedState(new ArraySet<>(Arrays.asList(affectedPackages)),
suspended);
}
}, UserHandle.ALL, suspendPackagesFilter, null, null);
// Get persisted window scale setting
mWindowAnimationScaleSetting = Settings.Global.getFloat(resolver,
Settings.Global.WINDOW_ANIMATION_SCALE, mWindowAnimationScaleSetting);
mTransitionAnimationScaleSetting = Settings.Global.getFloat(resolver,
Settings.Global.TRANSITION_ANIMATION_SCALE,
context.getResources().getFloat(
R.dimen.config_appTransitionAnimationDurationScaleDefault));
setAnimatorDurationScale(Settings.Global.getFloat(resolver,
Settings.Global.ANIMATOR_DURATION_SCALE, mAnimatorDurationScaleSetting));
mForceDesktopModeOnExternalDisplays = Settings.Global.getInt(resolver,
DEVELOPMENT_FORCE_DESKTOP_MODE_ON_EXTERNAL_DISPLAYS, 0) != 0;
final String displaySettingsPath = Settings.Global.getString(resolver,
DEVELOPMENT_WM_DISPLAY_SETTINGS_PATH);
mDisplayWindowSettingsProvider = displayWindowSettingsProvider;
if (displaySettingsPath != null) {
mDisplayWindowSettingsProvider.setBaseSettingsFilePath(displaySettingsPath);
}
//Current persistent settings about a display. Provides policies for display settings and delegates the persistence and lookup of settings values to the supplied {@link SettingsProvider}.
mDisplayWindowSettings = new DisplayWindowSettings(this, mDisplayWindowSettingsProvider);
IntentFilter filter = new IntentFilter();
// Track changes to DevicePolicyManager state so we can enable/disable keyguard.
filter.addAction(ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED);
mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL, filter, null, null);
mLatencyTracker = LatencyTracker.getInstance(context);
mSettingsObserver = new SettingsObserver();
mHoldingScreenWakeLock = mPowerManager.newWakeLock(
PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ON_AFTER_RELEASE, TAG_WM);
mHoldingScreenWakeLock.setReferenceCounted(false);
mSurfaceAnimationRunner = new SurfaceAnimationRunner(mTransactionFactory,
mPowerManagerInternal);
mAllowTheaterModeWakeFromLayout = context.getResources().getBoolean(
com.android.internal.R.bool.config_allowTheaterModeWakeFromWindowLayout);
mTaskPositioningController = new TaskPositioningController(
this, mInputManager, mActivityTaskManager, mH.getLooper());
mDragDropController = new DragDropController(this, mH.getLooper());
mHighRefreshRateDenylist = HighRefreshRateDenylist.create(context.getResources());
mConstants = new WindowManagerConstants(this, DeviceConfigInterface.REAL);
mConstants.start(new HandlerExecutor(mH));
LocalServices.addService(WindowManagerInternal.class, new LocalService());
mEmbeddedWindowController = new EmbeddedWindowController(mAtmService);
mDisplayAreaPolicyProvider = DisplayAreaPolicy.Provider.fromResources(
mContext.getResources());
mDisplayHashController = new DisplayHashController(mContext);
setGlobalShadowSettings();
mAnrController = new AnrController(this);
mStartingSurfaceController = new StartingSurfaceController(this);
mBlurController = new BlurController(mContext, mPowerManager);
}
WindowManagerService#onInitReady()
最重要的是执行了PhoneWindowManager的init
frameworks/base/services/core/java/com/android/server/wm/WindowManagerService.java
WindowManagerPolicy mPolicy;
public void onInitReady() {
initPolicy();
// Add ourself to the Watchdog monitors.
Watchdog.getInstance().addMonitor(this);
//创建水印
createWatermark();
showEmulatorDisplayOverlayIfNeeded();
}
private void initPolicy() {
UiThread.getHandler().runWithScissors(new Runnable() {
@Override
public void run() {
WindowManagerPolicyThread.set(Thread.currentThread(), Looper.myLooper());
mPolicy.init(mContext, WindowManagerService.this, WindowManagerService.this);
}
}, 0);
}
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
public void init(Context context, IWindowManager windowManager,
WindowManagerFuncs windowManagerFuncs) {
mContext = context;
mWindowManager = windowManager;
mWindowManagerFuncs = windowManagerFuncs;
mWindowManagerInternal = LocalServices.getService(WindowManagerInternal.class);
mActivityManagerInternal = LocalServices.getService(ActivityManagerInternal.class);
mActivityTaskManagerInternal = LocalServices.getService(ActivityTaskManagerInternal.class);
mInputManagerInternal = LocalServices.getService(InputManagerInternal.class);
mDreamManagerInternal = LocalServices.getService(DreamManagerInternal.class);
mPowerManagerInternal = LocalServices.getService(PowerManagerInternal.class);
mAppOpsManager = mContext.getSystemService(AppOpsManager.class);
mDisplayManager = mContext.getSystemService(DisplayManager.class);
mDisplayManagerInternal = LocalServices.getService(DisplayManagerInternal.class);
mPackageManager = mContext.getPackageManager();
mHasFeatureWatch = mPackageManager.hasSystemFeature(FEATURE_WATCH);
mHasFeatureLeanback = mPackageManager.hasSystemFeature(FEATURE_LEANBACK);
mHasFeatureAuto = mPackageManager.hasSystemFeature(FEATURE_AUTOMOTIVE);
mHasFeatureHdmiCec = mPackageManager.hasSystemFeature(FEATURE_HDMI_CEC);
mAccessibilityShortcutController =
new AccessibilityShortcutController(mContext, new Handler(), mCurrentUserId);
mLogger = new MetricsLogger();
mScreenOffSleepTokenAcquirer = mActivityTaskManagerInternal
.createSleepTokenAcquirer("ScreenOff");
Resources res = mContext.getResources();
mWakeOnDpadKeyPress =
res.getBoolean(com.android.internal.R.bool.config_wakeOnDpadKeyPress);
mWakeOnAssistKeyPress =
res.getBoolean(com.android.internal.R.bool.config_wakeOnAssistKeyPress);
mWakeOnBackKeyPress =
res.getBoolean(com.android.internal.R.bool.config_wakeOnBackKeyPress);
// Init display burn-in protection
boolean burnInProtectionEnabled = context.getResources().getBoolean(
com.android.internal.R.bool.config_enableBurnInProtection);
// Allow a system property to override this. Used by developer settings.
boolean burnInProtectionDevMode =
SystemProperties.getBoolean("persist.debug.force_burn_in", false);
if (burnInProtectionEnabled || burnInProtectionDevMode) {
final int minHorizontal;
final int maxHorizontal;
final int minVertical;
final int maxVertical;
final int maxRadius;
if (burnInProtectionDevMode) {
minHorizontal = -8;
maxHorizontal = 8;
minVertical = -8;
maxVertical = -4;
maxRadius = (isRoundWindow()) ? 6 : -1;
} else {
Resources resources = context.getResources();
minHorizontal = resources.getInteger(
com.android.internal.R.integer.config_burnInProtectionMinHorizontalOffset);
maxHorizontal = resources.getInteger(
com.android.internal.R.integer.config_burnInProtectionMaxHorizontalOffset);
minVertical = resources.getInteger(
com.android.internal.R.integer.config_burnInProtectionMinVerticalOffset);
maxVertical = resources.getInteger(
com.android.internal.R.integer.config_burnInProtectionMaxVerticalOffset);
maxRadius = resources.getInteger(
com.android.internal.R.integer.config_burnInProtectionMaxRadius);
}
mBurnInProtectionHelper = new BurnInProtectionHelper(
context, minHorizontal, maxHorizontal, minVertical, maxVertical, maxRadius);
}
mHandler = new PolicyHandler();
mWakeGestureListener = new MyWakeGestureListener(mContext, mHandler);
mSettingsObserver = new SettingsObserver(mHandler);
mSettingsObserver.observe();
mModifierShortcutManager = new ModifierShortcutManager(context);
mUiMode = context.getResources().getInteger(
com.android.internal.R.integer.config_defaultUiModeType);
mHomeIntent = new Intent(Intent.ACTION_MAIN, null);
mHomeIntent.addCategory(Intent.CATEGORY_HOME);
mHomeIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
mEnableCarDockHomeCapture = context.getResources().getBoolean(
com.android.internal.R.bool.config_enableCarDockHomeLaunch);
mCarDockIntent = new Intent(Intent.ACTION_MAIN, null);
mCarDockIntent.addCategory(Intent.CATEGORY_CAR_DOCK);
mCarDockIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
mDeskDockIntent = new Intent(Intent.ACTION_MAIN, null);
mDeskDockIntent.addCategory(Intent.CATEGORY_DESK_DOCK);
mDeskDockIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
mVrHeadsetHomeIntent = new Intent(Intent.ACTION_MAIN, null);
mVrHeadsetHomeIntent.addCategory(Intent.CATEGORY_VR_HOME);
mVrHeadsetHomeIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
mBroadcastWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
"PhoneWindowManager.mBroadcastWakeLock");
mPowerKeyWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
"PhoneWindowManager.mPowerKeyWakeLock");
mEnableShiftMenuBugReports = "1".equals(SystemProperties.get("ro.debuggable"));
mLidKeyboardAccessibility = mContext.getResources().getInteger(
com.android.internal.R.integer.config_lidKeyboardAccessibility);
mLidNavigationAccessibility = mContext.getResources().getInteger(
com.android.internal.R.integer.config_lidNavigationAccessibility);
mAllowTheaterModeWakeFromKey = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_allowTheaterModeWakeFromKey);
mAllowTheaterModeWakeFromPowerKey = mAllowTheaterModeWakeFromKey
|| mContext.getResources().getBoolean(
com.android.internal.R.bool.config_allowTheaterModeWakeFromPowerKey);
mAllowTheaterModeWakeFromMotion = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_allowTheaterModeWakeFromMotion);
mAllowTheaterModeWakeFromMotionWhenNotDreaming = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_allowTheaterModeWakeFromMotionWhenNotDreaming);
mAllowTheaterModeWakeFromCameraLens = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_allowTheaterModeWakeFromCameraLens);
mAllowTheaterModeWakeFromLidSwitch = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_allowTheaterModeWakeFromLidSwitch);
mAllowTheaterModeWakeFromWakeGesture = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_allowTheaterModeWakeFromGesture);
mGoToSleepOnButtonPressTheaterMode = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_goToSleepOnButtonPressTheaterMode);
mSupportLongPressPowerWhenNonInteractive = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_supportLongPressPowerWhenNonInteractive);
//定义长按back键的功能
mLongPressOnBackBehavior = mContext.getResources().getInteger(
com.android.internal.R.integer.config_longPressOnBackBehavior);
//定义短按power键功能
mShortPressOnPowerBehavior = mContext.getResources().getInteger(
com.android.internal.R.integer.config_shortPressOnPowerBehavior);
//定义长按power键功能
mLongPressOnPowerBehavior = mContext.getResources().getInteger(
com.android.internal.R.integer.config_longPressOnPowerBehavior);
mVeryLongPressOnPowerBehavior = mContext.getResources().getInteger(
com.android.internal.R.integer.config_veryLongPressOnPowerBehavior);
mDoublePressOnPowerBehavior = mContext.getResources().getInteger(
com.android.internal.R.integer.config_doublePressOnPowerBehavior);
mTriplePressOnPowerBehavior = mContext.getResources().getInteger(
com.android.internal.R.integer.config_triplePressOnPowerBehavior);
mShortPressOnSleepBehavior = mContext.getResources().getInteger(
com.android.internal.R.integer.config_shortPressOnSleepBehavior);
mAllowStartActivityForLongPressOnPowerDuringSetup = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_allowStartActivityForLongPressOnPowerInSetup);
mHapticTextHandleEnabled = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_enableHapticTextHandle);
mUseTvRouting = AudioSystem.getPlatformType(mContext) == AudioSystem.PLATFORM_TELEVISION;
mHandleVolumeKeysInWM = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_handleVolumeKeysInWindowManager);
mPerDisplayFocusEnabled = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_perDisplayFocusEnabled);
mWakeUpToLastStateTimeout = mContext.getResources().getInteger(
com.android.internal.R.integer.config_wakeUpToLastStateTimeoutMillis);
readConfigurationDependentBehaviors();
mDisplayFoldController = DisplayFoldController.create(context, DEFAULT_DISPLAY);
mAccessibilityManager = (AccessibilityManager) context.getSystemService(
Context.ACCESSIBILITY_SERVICE);
// register for dock events
IntentFilter filter = new IntentFilter();
filter.addAction(UiModeManager.ACTION_ENTER_CAR_MODE);
filter.addAction(UiModeManager.ACTION_EXIT_CAR_MODE);
filter.addAction(UiModeManager.ACTION_ENTER_DESK_MODE);
filter.addAction(UiModeManager.ACTION_EXIT_DESK_MODE);
filter.addAction(Intent.ACTION_DOCK_EVENT);
Intent intent = context.registerReceiver(mDockReceiver, filter);
if (intent != null) {
// Retrieve current sticky dock event broadcast.
mDefaultDisplayPolicy.setDockMode(intent.getIntExtra(Intent.EXTRA_DOCK_STATE,
Intent.EXTRA_DOCK_STATE_UNDOCKED));
}
// register for dream-related broadcasts
filter = new IntentFilter();
filter.addAction(Intent.ACTION_DREAMING_STARTED);
filter.addAction(Intent.ACTION_DREAMING_STOPPED);
context.registerReceiver(mDreamReceiver, filter);
// register for multiuser-relevant broadcasts
filter = new IntentFilter(Intent.ACTION_USER_SWITCHED);
context.registerReceiver(mMultiuserReceiver, filter);
//震动
mVibrator = (Vibrator)context.getSystemService(Context.VIBRATOR_SERVICE);
mLongPressVibePattern = getLongIntArray(mContext.getResources(),
com.android.internal.R.array.config_longPressVibePattern);
mCalendarDateVibePattern = getLongIntArray(mContext.getResources(),
com.android.internal.R.array.config_calendarDateVibePattern);
mSafeModeEnabledVibePattern = getLongIntArray(mContext.getResources(),
com.android.internal.R.array.config_safeModeEnabledVibePattern);
mGlobalKeyManager = new GlobalKeyManager(mContext);
// Controls rotation and the like.
initializeHdmiState();
// Match current screen state.
if (!mPowerManager.isInteractive()) {
startedGoingToSleep(PowerManager.GO_TO_SLEEP_REASON_TIMEOUT);
finishedGoingToSleep(PowerManager.GO_TO_SLEEP_REASON_TIMEOUT);
}
mWindowManagerInternal.registerAppTransitionListener(new AppTransitionListener() {
@Override
public int onAppTransitionStartingLocked(boolean keyguardGoingAway, long duration,
long statusBarAnimationStartTime, long statusBarAnimationDuration) {
return handleStartTransitionForKeyguardLw(keyguardGoingAway, duration);
}
@Override
public void onAppTransitionCancelledLocked(boolean keyguardGoingAway) {
handleStartTransitionForKeyguardLw(keyguardGoingAway, 0 /* duration */);
}
});
mKeyguardDelegate = new KeyguardServiceDelegate(mContext,
new StateCallback() {
@Override
public void onTrustedChanged() {
mWindowManagerFuncs.notifyKeyguardTrustedChanged();
}
@Override
public void onShowingChanged() {
mWindowManagerFuncs.onKeyguardShowingAndNotOccludedChanged();
}
});
initKeyCombinationRules();
initSingleKeyGestureRules();
mSideFpsEventHandler = new SideFpsEventHandler(mContext, mHandler, mPowerManager);
}WindowManagerService#displayReady()
public void displayReady() {
synchronized (mGlobalLock) {
if (mMaxUiWidth > 0) {
mRoot.forAllDisplays(displayContent -> displayContent.setMaxUiWidth(mMaxUiWidth));
}
applyForcedPropertiesForDefaultDisplay();
mAnimator.ready();
mDisplayReady = true;
// Reconfigure all displays to make sure that forced properties and
// DisplayWindowSettings are applied.
//更新Configuration
mRoot.forAllDisplays(DisplayContent::reconfigureDisplayLocked);
mIsTouchDevice = mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_TOUCHSCREEN);
mIsFakeTouchDevice = mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_FAKETOUCH);
}
try {
mActivityTaskManager.updateConfiguration(null);
} catch (RemoteException e) {
}
}WindowManagerService#systemReady()
执行到这里，表示system_server启动完成，WMS会调用其他组件的systemReady
public void systemReady() {
mSystemReady = true;
mPolicy.systemReady();
mRoot.forAllDisplayPolicies(DisplayPolicy::systemReady);
mTaskSnapshotController.systemReady();
mHasWideColorGamutSupport = queryWideColorGamutSupport();
mHasHdrSupport = queryHdrSupport();
UiThread.getHandler().post(mSettingsObserver::loadSettings);
IVrManager vrManager = IVrManager.Stub.asInterface(
ServiceManager.getService(Context.VR_SERVICE));
if (vrManager != null) {
try {
final boolean vrModeEnabled = vrManager.getVrModeState();
synchronized (mGlobalLock) {
vrManager.registerListener(mVrStateCallbacks);
if (vrModeEnabled) {
mVrModeEnabled = vrModeEnabled;
mVrStateCallbacks.onVrStateChanged(vrModeEnabled);
}
}
} catch (RemoteException e) {
// Ignore, we cannot do anything if we failed to register VR mode listener
}
}
}