Android(SpreadTurm)获取屏幕亮度，再设置屏幕亮度

import android.os.RemoteException;

import android.os.IPowerManager;
import android.os.ServiceManager;
import android.provider.Settings.SettingNotFoundException;

private int brightness; 

try { 

 brightness = Settings.System.getInt(mContext.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS); 
 Log.v("silence","Brightness"+brightness);
     } catch (SettingNotFoundException snfe) { 
          brightness = 255; 

     } 

try {
         IPowerManager power = IPowerManager.Stub.asInterface(ServiceManager.getService("power"));
         if (power != null) {
                power.setBacklightBrightness(brightness);
Log.v("silence","Brightness"+brightness);
            }
        } catch (RemoteException doe) {
            

        } 

当我们在对一些特定的操作进行亮度更改时，可使用此方法，brightness也可以高度一下固定的值