android 设置屏幕亮度,android 怎样设置屏幕亮度

/**

* 获得当前屏幕亮度的模式

* SCREEN_BRIGHTNESS_MODE_AUTOMATIC=1 为自动调节屏幕亮度

* 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();

}

}

/**

* 设置当前屏幕亮度值 0--255

*/

private void saveScreenBrightness(int paramInt){

try{

Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS, paramInt);

}

catch (Exception localException){

localException.printStackTrace();

}

}

/**

* 保存当前的屏幕亮度值，并使之生效

*/

private void setScreenBrightness(int paramInt){

Window localWindow = getWindow();

WindowManager.LayoutParams localLayoutParams = localWindow.getAttributes();

float f = paramInt / 255.0F;

localLayoutParams.screenBrightness = f;

localWindow.setAttributes(localLayoutParams);

}

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