只有一種方式，即活動來服務交流的最佳方式？

Question

從活動到服務的單向通信，服務無限期運行，直到活動命令它停止。

Answer 1

您可以使用廣播接收器的服務與活動之間的通信

你的服務應該是這樣的： -

public class MyService extends Service { 

private static final String TAG = "com.example.ServiceExample"; 

@Override 
    public void onCreate() { 
    Log.i(TAG, "Service onCreate"); 
} 

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


    //SendBroadCast to Activity 
    Intent intent = new Intent("my-event"); 
    intent.putExtra("message", "data"); 
    sendBroadcast(intent); 
    return Service.START_STICKY; 
} 

@Override 
public IBinder onBind(Intent arg0) { 
    // TODO Auto-generated method stub 
    Log.i(TAG, "Service onBind"); 
    return null; 
} 

@Override 
    public void onDestroy() { 
    Log.i(TAG, "Service onDestroy"); 
} 
} 

你的活動應該是這樣的： -

public class BindingActivity extends Activity { 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
} 

@Override 
protected void onStart() { 
    super.onStart(); 

} 

@Override 
protected void onStop() { 
    super.onStop(); 

} 

/** Called when a button is clicked (the button in the layout file attaches to 
    * this method with the android:onClick attribute) */ 
public void onButtonClick(View v) { 

} 

    private BroadcastReceiver mMessageReceiver = new BroadcastReceiver()  { 
@Override 
public void onReceive(Context context, Intent intent) { 
    // Extract data included in the Intent 
    String message = intent.getStringExtra("message"); 
    Log.d("receiver", "Got message: " + message); 
} 
}; 

    @Override 
    public void onResume() { 
    super.onResume(); 

// Register mMessageReceiver to receive messages. 
registerReceiver(mMessageReceiver, 
    new IntentFilter("my-event")); 
    } 

@Override 
protected void onPause() { 
    // Unregister since the activity is not visible 
    unregisterReceiver(mMessageReceiver); 
     super.onPause(); 
      } } 

       }