Java Code Examples for android.view.Display#STATE_ON

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);
}