Question

我是关于android的新手

我想开始两个服务和一个服务sendbroadcast另一个将捕获这个广播，但即使我在此广播中注册另一个服务它也无法正常工作这是我的代码，我做错了什么？

谢谢你的建议。

    public class MainActivity extends Activity {

    Intent i;
    Intent i2;
    static final String LOG_TAG = "ServiceActivity";

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        Log.d(LOG_TAG, "onCreate");
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);

        //Start service
        i = new Intent(this, com.example.user.sensorservicetest.SimpleService.class);
        i2= new Intent(this,com.example.user.sensorservicetest.AnotherService.class);
        Log.d(LOG_TAG, "onCreate/startService");
    }

    @Override
    public void onResume() {
        super.onResume();
        Log.d(LOG_TAG, "onResume/registering receiver");
        //Register BroadcastReceiver to receive accelerometer data from service

        startService(i);
        startService(i2);

        }
    }

    @Override
    public void onPause() {
        super.onPause();
        Log.d(LOG_TAG, "onPause/unregistering receiver");
        stopService(i);
        stopService(i2);


    }

    @Override
    protected void onStop() {
        super.onStop();
        Log.d(LOG_TAG, "onStop");

        stopService(i);
        stopService(i2);
    }

}

SimpleService

public class SimpleService extends Service implements SensorEventListener {


    private String reading;
    private SensorManager mgr;
    private List<Sensor> sensorList;
    static final String LOG_TAG = "SimpleService";
    Intent intent = new Intent("com.practice.SimpleService.MY_ACTION");
    final static String MY_ACTION = "com.practice.SimpleService.MY_ACTION";

    @Override
    //public void onStartCommand() {
    public void onCreate() {
        Log.d(LOG_TAG, "onStartCommand");
        mgr = (SensorManager) getSystemService(SENSOR_SERVICE);
        sensorList = mgr.getSensorList(Sensor.TYPE_ACCELEROMETER);
        for (Sensor sensor : sensorList) {
            mgr.registerListener(this, sensor,
                    SensorManager.SENSOR_DELAY_NORMAL);
        }

    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {

        return super.onStartCommand(intent,flags,startId);
    }

    @Override
    public void onDestroy() {
        Log.d(LOG_TAG, "onDestroy");
        mgr.unregisterListener(this);
        super.onDestroy();
    }

    @Override
    public IBinder onBind(Intent arg0) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        Log.d(LOG_TAG, "onSensorChanged");
        StringBuilder builder = new StringBuilder();

        for (int i = 0; i < event.values.length; i++) {
            builder.append("   [");
            builder.append(i);
            builder.append("] = ");
            builder.append(event.values[i]);
            builder.append("\n");
        }

        reading = builder.toString();

        //Send back reading to Activity
        intent.putExtra("measurement", reading);
        sendBroadcast(intent);
    }
}

AnotherService

public class AnotherService extends Service {
    static final String TAG = "AnotherService";
    private AnotherServiceReceiver anotherServiceReceiver = new AnotherServiceReceiver();


    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(TAG,"onStartCommand");
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction("com.practice.SimpleService.MY_ACTION");

        registerReceiver(anotherServiceReceiver, intentFilter);
        return super.onStartCommand(intent,flags,startId);
    }

    @Override
    public void onDestroy() {
        if (anotherServiceReceiver != null)
            unregisterReceiver(anotherServiceReceiver);

        super.onDestroy();
    }

    public static class AnotherServiceReceiver extends BroadcastReceiver {
        static final String receiverTag = "AnotherServiceReceiver";

        @Override
        public void onReceive(Context context, Intent intent) {
            Log.d(receiverTag, "onReceive");
            String measurement = intent.getStringExtra("measurement");
            Log.d(receiverTag, "measurement - 2 : " + measurement);
        }
    }
}

清单

  <service android:name=".SimpleService" ></service>
        <service android:name=".AnotherService"></service>
        <receiver android:name=".AnotherService$AnotherServiceReceiver" android:enabled="true">
            <intent-filter>
                <action android:name="here is problem I think"
            </intent-filter>
        </receiver>

Answer 1

据@Evgeniy Mishustin回答（感谢他）解决方案是在清单xml文件中添加服务，现在正在处理每个服务通信

        <service android:name=".SimpleService" ></service>
        <service android:name=".AnotherService"></service>
        <receiver android:name=".AnotherService$AnotherServiceReceiver" android:enabled="true">
            <intent-filter>
                <action android:name="com.practice.SimpleService.MY_ACTION"></action>
            </intent-filter>
        </receiver>
    </application>

使用BroadcastReceiver在两个服务之间进行通信

1 个答案: