下面列出了android.view.Display#STATE_ON 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
public DisplayPowerState(DisplayBlanker blanker, ColorFade colorFade) {
mHandler = new Handler(true /*async*/);
mChoreographer = Choreographer.getInstance();
mBlanker = blanker;
mColorFade = colorFade;
mPhotonicModulator = new PhotonicModulator();
mPhotonicModulator.start();
// At boot time, we know that the screen is on and the electron beam
// animation is not playing. We don't know the screen's brightness though,
// so prepare to set it to a known state when the state is next applied.
// Although we set the brightness to full on here, the display power controller
// will reset the brightness to a new level immediately before the changes
// actually have a chance to be applied.
mScreenState = Display.STATE_ON;
mScreenBrightness = PowerManager.BRIGHTNESS_ON;
scheduleScreenUpdate();
mColorFadePrepared = false;
mColorFadeLevel = 1.0f;
mColorFadeReady = true;
}
@Override
public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) {
switch (screenState) {
case Display.STATE_UNKNOWN:
case Display.STATE_OFF:
case Display.STATE_DOZE:
case Display.STATE_DOZE_SUSPEND:
case Display.STATE_ON_SUSPEND:
case Display.STATE_ON:
case Display.STATE_VR:
break;
default:
screenState = Display.STATE_UNKNOWN;
break;
}
if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT
|| screenBrightness > PowerManager.BRIGHTNESS_ON) {
screenBrightness = PowerManager.BRIGHTNESS_DEFAULT;
}
setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness);
}
boolean okToDisplay() {
if (mDisplayId == DEFAULT_DISPLAY) {
return !mService.mDisplayFrozen
&& mService.mDisplayEnabled && mService.mPolicy.isScreenOn();
}
return mDisplayInfo.state == Display.STATE_ON;
}
private void debugScreenPowerState() {
String isDeviceIdleMode = "unknow"; // --- API 23
String isIgnoringBatteryOptimizations = "unknow"; // --- API 23
String isPowerSaveMode = "unknow"; // --- API 21
String isInteractive = "unknow"; // --- API 20 ( before since API 7 is: isScreenOn())
String screenState = "unknow"; // --- API 20
if (Build.VERSION.SDK_INT >= 23) {
isDeviceIdleMode = String.format("%s", mPowerManager.isDeviceIdleMode());
isIgnoringBatteryOptimizations = String.format("%s", mPowerManager.isIgnoringBatteryOptimizations(mPackageName));
}
if (Build.VERSION.SDK_INT >= 21) {
isPowerSaveMode = String.format("%s", mPowerManager.isPowerSaveMode());
}
if (Build.VERSION.SDK_INT >= 20) {
isInteractive = String.format("%s", mPowerManager.isInteractive());
Display display = mWindowManager.getDefaultDisplay();
switch (display.getState()) {
case Display.STATE_OFF:
screenState = "STATE_OFF";
break;
case Display.STATE_ON:
screenState = "STATE_ON";
break;
case Display.STATE_DOZE:
screenState = "STATE_DOZE";
break;
case Display.STATE_DOZE_SUSPEND:
screenState = "STATE_DOZE_SUSPEND";
break;
default:
break;
}
} else {
isInteractive = String.format("%s", mPowerManager.isScreenOn());
}
Log.d(TAG, String.format("debugScreenPowerState(): screenState='%s', isInteractive='%s', isPowerSaveMode='%s', isDeviceIdleMode='%s', isIgnoringBatteryOptimizations='%s'", screenState, isInteractive, isPowerSaveMode, isDeviceIdleMode, isIgnoringBatteryOptimizations));
}
private void updateSecondsHandler() {
if (mClock == null) return;
if (mShowSeconds && mClock.getDisplay() != null) {
mSecondsHandler = new Handler();
if (mClock.getDisplay().getState() == Display.STATE_ON && !mClockHidden) {
mSecondsHandler.postAtTime(mSecondTick,
SystemClock.uptimeMillis() / 1000 * 1000 + 1000);
}
} else if (mSecondsHandler != null) {
mSecondsHandler.removeCallbacks(mSecondTick);
mSecondsHandler = null;
updateClock();
}
}
public static boolean isScreenOn(Context context) {
DisplayManager dm = (DisplayManager) context.getSystemService(Context.DISPLAY_SERVICE);
for (Display display : dm.getDisplays()) {
if (display.getState() == Display.STATE_ON
|| display.getState() == Display.STATE_UNKNOWN) {
return true;
}
}
return false;
}
private void debugScreenPowerState() {
String isDeviceIdleMode = "unknow"; // --- API 23
String isIgnoringBatteryOptimizations = "unknow"; // --- API 23
String isPowerSaveMode = "unknow"; // --- API 21
String isInteractive = "unknow"; // --- API 20 ( before since API 7 is: isScreenOn())
String screenState = "unknow"; // --- API 20
if (android.os.Build.VERSION.SDK_INT >= 23) {
isDeviceIdleMode = String.format("%s", mPowerManager.isDeviceIdleMode());
isIgnoringBatteryOptimizations = String.format("%s", mPowerManager.isIgnoringBatteryOptimizations(mPackageName));
}
if (android.os.Build.VERSION.SDK_INT >= 21) {
isPowerSaveMode = String.format("%s", mPowerManager.isPowerSaveMode());
}
if (android.os.Build.VERSION.SDK_INT >= 20) {
isInteractive = String.format("%s", mPowerManager.isInteractive());
Display display = mWindowManager.getDefaultDisplay();
switch (display.getState()) {
case Display.STATE_OFF:
screenState = "STATE_OFF";
break;
case Display.STATE_ON:
screenState = "STATE_ON";
break;
case Display.STATE_DOZE:
screenState = "STATE_DOZE";
break;
case Display.STATE_DOZE_SUSPEND:
screenState = "STATE_DOZE_SUSPEND";
break;
default:
break;
}
} else {
isInteractive = String.format("%s", mPowerManager.isScreenOn());
}
Log.d(TAG, String.format("debugScreenPowerState(): screenState='%s', isInteractive='%s', isPowerSaveMode='%s', isDeviceIdleMode='%s', isIgnoringBatteryOptimizations='%s'", screenState, isInteractive, isPowerSaveMode, isDeviceIdleMode, isIgnoringBatteryOptimizations));
}
private void requestGlobalDisplayStateInternal(int state, int brightness) {
if (state == Display.STATE_UNKNOWN) {
state = Display.STATE_ON;
}
if (state == Display.STATE_OFF) {
brightness = PowerManager.BRIGHTNESS_OFF;
} else if (brightness < 0) {
brightness = PowerManager.BRIGHTNESS_DEFAULT;
} else if (brightness > PowerManager.BRIGHTNESS_ON) {
brightness = PowerManager.BRIGHTNESS_ON;
}
synchronized (mTempDisplayStateWorkQueue) {
try {
// Update the display state within the lock.
// Note that we do not need to schedule traversals here although it
// may happen as a side-effect of displays changing state.
synchronized (mSyncRoot) {
if (mGlobalDisplayState == state
&& mGlobalDisplayBrightness == brightness) {
return; // no change
}
Trace.traceBegin(Trace.TRACE_TAG_POWER, "requestGlobalDisplayState("
+ Display.stateToString(state)
+ ", brightness=" + brightness + ")");
mGlobalDisplayState = state;
mGlobalDisplayBrightness = brightness;
applyGlobalDisplayStateLocked(mTempDisplayStateWorkQueue);
}
// Setting the display power state can take hundreds of milliseconds
// to complete so we defer the most expensive part of the work until
// after we have exited the critical section to avoid blocking other
// threads for a long time.
for (int i = 0; i < mTempDisplayStateWorkQueue.size(); i++) {
mTempDisplayStateWorkQueue.get(i).run();
}
Trace.traceEnd(Trace.TRACE_TAG_POWER);
} finally {
mTempDisplayStateWorkQueue.clear();
}
}
}
@Override
public DisplayDeviceInfo getDisplayDeviceInfoLocked() {
if (mInfo == null) {
mInfo = new DisplayDeviceInfo();
mInfo.name = mName;
mInfo.uniqueId = getUniqueId();
mInfo.width = mWidth;
mInfo.height = mHeight;
mInfo.modeId = mMode.getModeId();
mInfo.defaultModeId = mMode.getModeId();
mInfo.supportedModes = new Display.Mode[] { mMode };
mInfo.densityDpi = mDensityDpi;
mInfo.xDpi = mDensityDpi;
mInfo.yDpi = mDensityDpi;
mInfo.presentationDeadlineNanos = 1000000000L / (int) REFRESH_RATE; // 1 frame
mInfo.flags = 0;
if ((mFlags & VIRTUAL_DISPLAY_FLAG_PUBLIC) == 0) {
mInfo.flags |= DisplayDeviceInfo.FLAG_PRIVATE
| DisplayDeviceInfo.FLAG_NEVER_BLANK;
}
if ((mFlags & VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR) != 0) {
mInfo.flags &= ~DisplayDeviceInfo.FLAG_NEVER_BLANK;
} else {
mInfo.flags |= DisplayDeviceInfo.FLAG_OWN_CONTENT_ONLY;
}
if ((mFlags & VIRTUAL_DISPLAY_FLAG_SECURE) != 0) {
mInfo.flags |= DisplayDeviceInfo.FLAG_SECURE;
}
if ((mFlags & VIRTUAL_DISPLAY_FLAG_PRESENTATION) != 0) {
mInfo.flags |= DisplayDeviceInfo.FLAG_PRESENTATION;
if ((mFlags & VIRTUAL_DISPLAY_FLAG_PUBLIC) != 0) {
// For demonstration purposes, allow rotation of the external display.
// In the future we might allow the user to configure this directly.
if ("portrait".equals(SystemProperties.get(
"persist.demo.remoterotation"))) {
mInfo.rotation = Surface.ROTATION_270;
}
}
}
if ((mFlags & VIRTUAL_DISPLAY_FLAG_CAN_SHOW_WITH_INSECURE_KEYGUARD) != 0) {
mInfo.flags |= DisplayDeviceInfo.FLAG_CAN_SHOW_WITH_INSECURE_KEYGUARD;
}
if ((mFlags & VIRTUAL_DISPLAY_FLAG_ROTATES_WITH_CONTENT) != 0) {
mInfo.flags |= DisplayDeviceInfo.FLAG_ROTATES_WITH_CONTENT;
}
if ((mFlags & VIRTUAL_DISPLAY_FLAG_DESTROY_CONTENT_ON_REMOVAL) != 0) {
mInfo.flags |= DisplayDeviceInfo.FLAG_DESTROY_CONTENT_ON_REMOVAL;
}
mInfo.type = Display.TYPE_VIRTUAL;
mInfo.touch = ((mFlags & VIRTUAL_DISPLAY_FLAG_SUPPORTS_TOUCH) == 0) ?
DisplayDeviceInfo.TOUCH_NONE : DisplayDeviceInfo.TOUCH_VIRTUAL;
mInfo.state = mSurface != null ? Display.STATE_ON : Display.STATE_OFF;
mInfo.ownerUid = mOwnerUid;
mInfo.ownerPackageName = mOwnerPackageName;
}
return mInfo;
}
/**
* Updates the display power state asynchronously.
* When the update is finished, mDisplayReady will be set to true. The display
* controller posts a message to tell us when the actual display power state
* has been updated so we come back here to double-check and finish up.
*
* This function recalculates the display power state each time.
*
* @return True if the display became ready.
*/
private boolean updateDisplayPowerStateLocked(int dirty) {
final boolean oldDisplayReady = mDisplayReady;
if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS
| DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED
| DIRTY_SETTINGS | DIRTY_SCREEN_BRIGHTNESS_BOOST | DIRTY_VR_MODE_CHANGED |
DIRTY_QUIESCENT)) != 0) {
mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked();
// Determine appropriate screen brightness and auto-brightness adjustments.
final boolean autoBrightness;
final int screenBrightnessOverride;
if (!mBootCompleted) {
// Keep the brightness steady during boot. This requires the
// bootloader brightness and the default brightness to be identical.
autoBrightness = false;
screenBrightnessOverride = mScreenBrightnessSettingDefault;
} else if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) {
autoBrightness = false;
screenBrightnessOverride = mScreenBrightnessOverrideFromWindowManager;
} else {
autoBrightness = (mScreenBrightnessModeSetting ==
Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC);
screenBrightnessOverride = -1;
}
// Update display power request.
mDisplayPowerRequest.screenBrightnessOverride = screenBrightnessOverride;
mDisplayPowerRequest.useAutoBrightness = autoBrightness;
mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked();
mDisplayPowerRequest.boostScreenBrightness = shouldBoostScreenBrightness();
updatePowerRequestFromBatterySaverPolicy(mDisplayPowerRequest);
if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) {
mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager;
if ((mWakeLockSummary & WAKE_LOCK_DRAW) != 0
&& !mDrawWakeLockOverrideFromSidekick) {
if (mDisplayPowerRequest.dozeScreenState == Display.STATE_DOZE_SUSPEND) {
mDisplayPowerRequest.dozeScreenState = Display.STATE_DOZE;
}
if (mDisplayPowerRequest.dozeScreenState == Display.STATE_ON_SUSPEND) {
mDisplayPowerRequest.dozeScreenState = Display.STATE_ON;
}
}
mDisplayPowerRequest.dozeScreenBrightness =
mDozeScreenBrightnessOverrideFromDreamManager;
} else {
mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN;
mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT;
}
mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest,
mRequestWaitForNegativeProximity);
mRequestWaitForNegativeProximity = false;
if ((dirty & DIRTY_QUIESCENT) != 0) {
sQuiescent = false;
}
if (DEBUG_SPEW) {
Slog.d(TAG, "updateDisplayPowerStateLocked: mDisplayReady=" + mDisplayReady
+ ", policy=" + mDisplayPowerRequest.policy
+ ", mWakefulness=" + mWakefulness
+ ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)
+ ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)
+ ", mBootCompleted=" + mBootCompleted
+ ", screenBrightnessOverride=" + screenBrightnessOverride
+ ", useAutoBrightness=" + autoBrightness
+ ", mScreenBrightnessBoostInProgress=" + mScreenBrightnessBoostInProgress
+ ", mIsVrModeEnabled= " + mIsVrModeEnabled
+ ", sQuiescent=" + sQuiescent);
}
}
return mDisplayReady && !oldDisplayReady;
}
/**
* If the package hasn't been processed (i.e. uncrypt'd), set up
* UNCRYPT_PACKAGE_FILE and delete BLOCK_MAP_FILE to trigger uncrypt during the
* reboot.
*
* @param context the Context to use
* @param packageFile the update package to install. Must be on a
* partition mountable by recovery.
* @param processed if the package has been processed (uncrypt'd).
*
* @throws IOException if writing the recovery command file fails, or if
* the reboot itself fails.
*
* @hide
*/
@SystemApi
@RequiresPermission(android.Manifest.permission.RECOVERY)
public static void installPackage(Context context, File packageFile, boolean processed)
throws IOException {
synchronized (sRequestLock) {
LOG_FILE.delete();
// Must delete the file in case it was created by system server.
UNCRYPT_PACKAGE_FILE.delete();
String filename = packageFile.getCanonicalPath();
Log.w(TAG, "!!! REBOOTING TO INSTALL " + filename + " !!!");
// If the package name ends with "_s.zip", it's a security update.
boolean securityUpdate = filename.endsWith("_s.zip");
// If the package is on the /data partition, the package needs to
// be processed (i.e. uncrypt'd). The caller specifies if that has
// been done in 'processed' parameter.
if (filename.startsWith("/data/")) {
if (processed) {
if (!BLOCK_MAP_FILE.exists()) {
Log.e(TAG, "Package claimed to have been processed but failed to find "
+ "the block map file.");
throw new IOException("Failed to find block map file");
}
} else {
FileWriter uncryptFile = new FileWriter(UNCRYPT_PACKAGE_FILE);
try {
uncryptFile.write(filename + "\n");
} finally {
uncryptFile.close();
}
// UNCRYPT_PACKAGE_FILE needs to be readable and writable
// by system server.
if (!UNCRYPT_PACKAGE_FILE.setReadable(true, false)
|| !UNCRYPT_PACKAGE_FILE.setWritable(true, false)) {
Log.e(TAG, "Error setting permission for " + UNCRYPT_PACKAGE_FILE);
}
BLOCK_MAP_FILE.delete();
}
// If the package is on the /data partition, use the block map
// file as the package name instead.
filename = "@/cache/recovery/block.map";
}
final String filenameArg = "--update_package=" + filename + "\n";
final String localeArg = "--locale=" + Locale.getDefault().toLanguageTag() + "\n";
final String securityArg = "--security\n";
String command = filenameArg + localeArg;
if (securityUpdate) {
command += securityArg;
}
RecoverySystem rs = (RecoverySystem) context.getSystemService(
Context.RECOVERY_SERVICE);
if (!rs.setupBcb(command)) {
throw new IOException("Setup BCB failed");
}
// Having set up the BCB (bootloader control block), go ahead and reboot
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
String reason = PowerManager.REBOOT_RECOVERY_UPDATE;
// On TV, reboot quiescently if the screen is off
if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_LEANBACK)) {
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
if (wm.getDefaultDisplay().getState() != Display.STATE_ON) {
reason += ",quiescent";
}
}
pm.reboot(reason);
throw new IOException("Reboot failed (no permissions?)");
}
}
private boolean filter(StatusBarNotification sbn) {
String packageName = sbn.getPackageName();
if (!globalEnabled() || !appEnabled(packageName)) {
return false;
}
boolean usingCustomSettings = isUsingCustomSettings(packageName);
SharedPreferences sp;
if (usingCustomSettings) {
sp = getSharedPreferences(getString(R.string.notification_settings_custom), MODE_PRIVATE);
} else {
sp = getSharedPreferences(getString(R.string.notification_settings_global), MODE_PRIVATE);
}
boolean isAn2linuxTestNotification = packageName.startsWith("kiwi.root.an2linuxclient");
if (dontSendIfScreenIsOn(sp, packageName, usingCustomSettings) && !isAn2linuxTestNotification) {
boolean screenIsOn = false;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
DisplayManager dm = (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
for (Display display : dm.getDisplays()) {
if (display.getState() == Display.STATE_ON) {
// private as in samsung always-on feature, not sure if this is how it works
// https://stackoverflow.com/questions/2474367/how-can-i-tell-if-the-screen-is-on-in-android#comment71534994_17348755
boolean displayIsPrivate = (display.getFlags() & Display.FLAG_PRIVATE) == Display.FLAG_PRIVATE;
if (!displayIsPrivate) {
screenIsOn = true;
break;
}
}
}
} else {
PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
if (powerManager.isScreenOn()){
screenIsOn = true;
}
}
if (screenIsOn) {
return false;
}
}
int flags = sbn.getNotification().flags;
if (isOngoing(flags) && blockOngoing(sp, packageName, usingCustomSettings)){
return false;
}
if (isForeground(flags) && blockForeground(sp, packageName, usingCustomSettings)){
return false;
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH){
if (isGroupSummary(flags) && blockGroupSummary(sp, packageName, usingCustomSettings)){
return false;
}
if (isLocalOnly(flags) && blockLocalOnly(sp, packageName, usingCustomSettings)){
return false;
}
}
return priorityAllowed(sp, packageName, usingCustomSettings, sbn.getNotification().priority);
}
private boolean filter(StatusBarNotification sbn) {
String packageName = sbn.getPackageName();
if (!globalEnabled() || !appEnabled(packageName)) {
return false;
}
boolean usingCustomSettings = isUsingCustomSettings(packageName);
SharedPreferences sp;
if (usingCustomSettings) {
sp = getSharedPreferences(getString(R.string.notification_settings_custom), MODE_PRIVATE);
} else {
sp = getSharedPreferences(getString(R.string.notification_settings_global), MODE_PRIVATE);
}
boolean isAn2linuxTestNotification = packageName.startsWith("kiwi.root.an2linuxclient");
if (dontSendIfScreenIsOn(sp, packageName, usingCustomSettings) && !isAn2linuxTestNotification) {
boolean screenIsOn = false;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
DisplayManager dm = (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
for (Display display : dm.getDisplays()) {
if (display.getState() == Display.STATE_ON) {
// private as in samsung always-on feature, not sure if this is how it works
// https://stackoverflow.com/questions/2474367/how-can-i-tell-if-the-screen-is-on-in-android#comment71534994_17348755
boolean displayIsPrivate = (display.getFlags() & Display.FLAG_PRIVATE) == Display.FLAG_PRIVATE;
if (!displayIsPrivate) {
screenIsOn = true;
break;
}
}
}
} else {
PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
if (powerManager.isScreenOn()){
screenIsOn = true;
}
}
if (screenIsOn) {
return false;
}
}
int flags = sbn.getNotification().flags;
if (isOngoing(flags) && blockOngoing(sp, packageName, usingCustomSettings)){
return false;
}
if (isForeground(flags) && blockForeground(sp, packageName, usingCustomSettings)){
return false;
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH){
if (isGroupSummary(flags) && blockGroupSummary(sp, packageName, usingCustomSettings)){
return false;
}
if (isLocalOnly(flags) && blockLocalOnly(sp, packageName, usingCustomSettings)){
return false;
}
}
return priorityAllowed(sp, packageName, usingCustomSettings, sbn.getNotification().priority);
}
@SuppressLint("NewApi")
public static boolean isScreenOn(@NonNull Context context) {
display_api:
if (Device.hasKitKatWatchApi()) {
DisplayManager dm = (DisplayManager) context.getSystemService(Context.DISPLAY_SERVICE);
Display[] displays = dm.getDisplays(null);
Display display = null;
if (displays == null || displays.length == 0) {
break display_api;
} else if (displays.length > 1) {
Timber.tag(TAG).i("The number of logical displays is " + displays.length);
}
for (Display d : displays) {
final boolean virtual = Operator.bitAnd(d.getFlags(), Display.FLAG_PRESENTATION);
if (d.isValid() && !virtual) {
display = d;
final int type;
try {
Method method = Display.class.getDeclaredMethod("getType");
method.setAccessible(true);
type = (int) method.invoke(d);
} catch (Exception e) {
continue;
}
if (type == 1 /* built-in display */) {
break;
}
}
}
if (display == null) {
return false;
}
Timber.tag(TAG).i("Display state=" + display.getState());
return display.getState() == Display.STATE_ON;
}
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
return isInteractive(pm);
}