从服务android更改亮度 [英] changing brightness from Service android

问题描述

我想从服务更改android设备的亮度。我已经看到了很多关于堆栈溢出的问题，但是没有一个问题解决了我的问题。

I want to change brightness of android device from a service. I have seen a lot of questions on stack overflow on this but none of them has solved my problem.

我已经完成了从settingsManger中设置亮度的一切工作，开始了新的工作活动等
，但没有一个对我有用。

I have done every thing from setting brightness in settingsManger, starting a new activity etc but none of them is working for me.

推荐答案

尝试为

   android.provider.Settings.System.putInt(getContentResolver(),
   android.provider.Settings.System.SCREEN_BRIGHTNESS,
   BRIGHTNESS_Value);

并在Manifest.xml中添加权限

and add permission in Manifest.xml

<uses-permission android:name="android.permission.WRITE_SETTINGS"/>
<uses-permission android:name="android.permission.CHANGE_CONFIGURATION" />
</manifest>

编辑：
尝试如下：

try as:

public class ExampleService extends Service {

    @Override
    public void onCreate() {
        // The service is being created
        // set SCREEN_BRIGHTNESS
        android.provider.Settings.System.putInt(getContentResolver(),
        android.provider.Settings.System.SCREEN_BRIGHTNESS,
        BRIGHTNESS_Value);
        /// start new Activity
        Intent intent = new Intent(getBaseContext(), ExampleActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        getApplication().startActivity(intent);
    }

    @Override
    public IBinder onBind(Intent intent) {
        // A client is binding to the service with bindService()
        return mBinder;
    }
}

public class ExampleActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // The activity is being created.

    }

    @Override
    protected void onResume() {
        super.onResume();
        // The activity has become visible (it is now "resumed").
        this.finish();
    }
  }

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