修改屏幕默认亮度值:MTKSettingsProvider\res\values\defaults.xml
<integer name="def_screen_brightness">255</integer> 生效
修改屏幕默认亮度值:frameworks/base/core/res/res/values/config.xml
<integer name="config_screenBrightnessSettingDefault">255</integer> 不生效
/**
*屏幕亮度控制类
*/
// The default screen brightness.
private final int mScreenBrightnessDefault;
public DisplayPowerController(Context context,
DisplayPowerCallbacks callbacks, Handler handler,
SensorManager sensorManager, DisplayBlanker blanker) {
mHandler = new DisplayControllerHandler(handler.getLooper());
mBrightnessTracker = new BrightnessTracker(context, null);
mSettingsObserver = new SettingsObserver(mHandler);
mCallbacks = callbacks;
mBatteryStats = BatteryStatsService.getService();
mSensorManager = sensorManager;
mWin