应用程序未运行时获取屏幕开/关事件

时间:2014-05-01 09:23:36

标签: java android android-event

我目前正在试图找出,如何在Android中获取屏幕开/关事件。目前,只要我的MainActivity运行,它就可以工作。但是一旦我关闭活动,Sevice和Receiver就会停止工作(我不再收到任何Log消息)。我想这个问题,在某种程度上与接收器的动态注册有关。一旦应用程序关闭,接收器就会被取消注册(?)。如何让接收器保持活力? (无法在Manifest文件中声明接收器。)

我收到了以下代码:

主要活动:

public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    startService(new Intent(getApplicationContext(), ScreenOnOffService.class));
    }
}

ScreenReceiver:

public class ScreenReceiver extends BroadcastReceiver {
@Override
public void onReceive(final Context context, final Intent intent) {
    Log.e("test","onReceive");
    if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
        Log.d("test","Screen Off ");

    } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
        Log.d("test","Screen On ");}
    }
}

ScreenOnOffService:

public class ScreenOnOffService extends Service {

//Some unimportant code
@Override
public int onStartCommand(Intent intent, int flags, int startId) {

    final IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
    filter.addAction(Intent.ACTION_SCREEN_OFF);
    filter.addAction(Intent.ACTION_USER_PRESENT);
    final BroadcastReceiver mReceiver = new ScreenReceiver();
    registerReceiver(mReceiver, filter);
    return super.onStartCommand(intent, flags, startId);
    }
}

AndroidManifest:

<?xml version="1.0" encoding="utf-8"?>

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="ch.ethz.inf.thesis.screenonoffproject.app.MainActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <service android:name=".ScreenOnOffService">
    </service>

</application>
</manifest>

我错过了让我的服务保持活力的东西吗?我希望有人可以帮助我。

1 个答案:

答案 0 :(得分:0)

尝试使用完整路径进行服务并接收(如果有)

<service  
android:name="ch.ethz.inf.thesis.screenonoffproject.app.ScreenOnOffService">
</service>