RK Android7.1 进入Camera2 亮度会增加

 

一.现象

Android7.1  进Camera2 背光亮度会增加到 brightness 229 ，退出之后Camera2 亮度会回到默认值，不正常退出Camera2 （不完成生命周期）则会保存到 brightness 229

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1	adb shell settings get system screen_brightness

 二.RK OS 

ZK_RXXX_RK3399_ANDROID7.1\packages\apps\Camera2\src\com\android\camera\CameraActivity.java

       setScreenBrightAdjust  设置背光值

                     mScreenBrightAdjust

　　　　　　　　     restoreScreenBright　　

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private void setMaxScreenBright() {     Window win = getWindow();     WindowManager.LayoutParams winParams = win.getAttributes();     Log.i(TAG, "screenBrightness = " + winParams.screenBrightness);     winParams.screenBrightness = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_FULL;     win.setAttributes(winParams); }   private int mOrignalScreenBrightMode = -1; private int mOrignalScreenBrightness = -1; private void setScreenBrightAdjust() {     mOrignalScreenBrightMode = getScreenMode();     mOrignalScreenBrightness = getScreenBrightness();     Log.i(TAG, "mOrignalScreenBrightMode = " + mOrignalScreenBrightMode             + ",mOrignalScreenBrightness = " + mOrignalScreenBrightness);     if (mOrignalScreenBrightMode == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC)         setScreenMode(Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);     if (mOrignalScreenBrightness < ((int) (255 * 0.9f)))         saveScreenBrightness((int) (255 * 0.9f)); }   private Runnable mScreenBrightAdjust = new Runnable() {           @Override     public void run() {         // TODO Auto-generated method stub         setScreenBrightAdjust();     } };   private void restoreScreenBright() {     mMainHandler.removeCallbacks(mScreenBrightAdjust);     setScreenMode(mOrignalScreenBrightMode);     saveScreenBrightness(mOrignalScreenBrightness); }   /**  * getCurrentScreenBrightMode  * SCREEN_BRIGHTNESS_MODE_AUTOMATIC=1 auto  * SCREEN_BRIGHTNESS_MODE_MANUAL=0  manual  */  private int getScreenMode() {     int screenMode=0;     try {         screenMode = Settings.System.getInt(getContentResolver(),                 Settings.System.SCREEN_BRIGHTNESS_MODE);     }     catch (Exception localException){         Log.e(TAG, "getScreenMode error:" + localException);     }     return screenMode;  }    /**  * getScreenBrightness  0--255  */  private int getScreenBrightness() {     int screenBrightness = 255;     try {         screenBrightness = Settings.System.getInt(getContentResolver(),                 Settings.System.SCREEN_BRIGHTNESS);     }     catch (Exception localException){         Log.e(TAG, "getScreenBrightness error:" + localException);     }     return screenBrightness;  }   /**  * setScreenMode  * SCREEN_BRIGHTNESS_MODE_AUTOMATIC=1 auto  * SCREEN_BRIGHTNESS_MODE_MANUAL=0  manual  */ private void setScreenMode(int paramInt){     if (paramInt < 0) return;     try{          Settings.System.putInt(getContentResolver(),                 Settings.System.SCREEN_BRIGHTNESS_MODE, paramInt);     }catch (Exception localException){         Log.e(TAG, "setScreenMode error:" + localException);     } }   /**  * saveScreenBrightness  0--255  */  private void saveScreenBrightness(int paramInt){     if (paramInt < 0) return;     try{          Settings.System.putInt(getContentResolver(),                 Settings.System.SCREEN_BRIGHTNESS, paramInt);     }     catch (Exception localException) {         Log.e(TAG, "saveScreenBrightness error:" + localException);     } }

　把setScreenBrightAdjust  干掉就差不多了………