直播源码Android(安卓)屏幕常亮N秒后自动暗屏

// 最大的屏幕亮度   private float maxLight;// 当前的亮度  private float currentLight;// 用来控制屏幕亮度  private Handler lightHandler;// 60秒时间不点击屏幕，屏幕变暗 private long delayTime = 60 * 1000L; protected void onCreate() {// 保持屏幕常亮getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);// 屏幕亮度控制lightHandler = new Handler(Looper.getMainLooper());      maxLight = getLightness(); }@Overridepublic boolean dispatchTouchEvent(MotionEvent ev) {if (currentLight == 1) {startSleepTask();return false;}   startSleepTask();      return super.dispatchTouchEvent(ev);}/**  * 获取亮度  */  private float getLightness() {    WindowManager.LayoutParams localLayoutParams = this.getWindow().getAttributes();      return localLayoutParams.screenBrightness;  }/**  * 设置亮度   */  private void setLightness(int light) {      currentLight = light;      WindowManager.LayoutParams localLayoutParams = this.getWindow().getAttributes();    localLayoutParams.screenBrightness = (light / 255.0F);    this.getWindow().setAttributes(localLayoutParams);}/**  * 开启休眠任务  */  private void startSleepTask() {      setLightness((int) maxLight);      stopSleepTask();    lightHandler.postDelayed(sleepWindowTask, delayTime);}  /**  * 结束休眠任务  */  private void stopSleepTask() {  lightHandler.removeCallbacks(sleepWindowTask);  }  /**  * 休眠任务  */ Runnable sleepWindowTask = new Runnable() {      @Override      public void run() {    setLightness(1);      }  };
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