android-将系统和应用程序级的屏幕亮度

/**
* 获取当前屏幕亮度模式
* SCREEN_BRIGHTNESS_MODE_AUTOMATIC=1 为自己主动调节屏幕亮度
* SCREEN_BRIGHTNESS_MODE_MANUAL=0 为手动调节屏幕亮度
*/
private int getScreenMode(){
int screenMode=0;
try{
screenMode = Settings.System.getInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE);
}
catch (Exception localException){ }
return screenMode;
} /**
* 获得当前屏幕亮度值 0-255
*/
private int getScreenBrightness(){
int screenBrightness=255;
try{
screenBrightness = Settings.System.getInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS);
}
catch (Exception localException){ }
return screenBrightness;
}
/**
* 设置当前屏幕亮度的模式
* SCREEN_BRIGHTNESS_MODE_AUTOMATIC=1 为自己主动调节屏幕亮度
* SCREEN_BRIGHTNESS_MODE_MANUAL=0 为手动调节屏幕亮度
*/
private void setScreenMode(int paramInt){
try{
Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, paramInt);
}catch (Exception localException){
localException.printStackTrace();
}
}
/**
* 设置系统级屏幕亮度值 0-255
<span style="white-space:pre"></span> *
*/
private void saveScreenBrightness(int paramInt){
try{
Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS, paramInt);
}
catch (Exception localException){
localException.printStackTrace();
}
}
/**
* 设置当前的屏幕亮度值，及时生效 0-255
<span style="white-space:pre"></span> * 该方法仅对当前应用屏幕亮度生效
*/
private void setScreenBrightness(int paramInt){
Window localWindow = getWindow();
WindowManager.LayoutParams localLayoutParams = localWindow.getAttributes();
float f = paramInt / 255.0F;
localLayoutParams.screenBrightness = f;
localWindow.setAttributes(localLayoutParams);
}