与服务通信有三种明显的方式:

使用意图 使用AIDL 使用服务对象本身(作为单例)

在你的情况下，我选择第三种。对它自己的服务做一个静态引用，并在onCreate()中填充它:

void onCreate(Intent i) {
  sInstance = this;
}

创建一个静态函数MyService getInstance()，该函数返回静态sInstance。

Then in Activity.onCreate() you start the service, asynchronously wait until the service is actually started (you could have your service notify your app it's ready by sending an intent to the activity.) and get its instance. When you have the instance, register your service listener object to you service and you are set. NOTE: when editing Views inside the Activity you should modify them in the UI thread, the service will probably run its own Thread, so you need to call Activity.runOnUiThread().

您需要做的最后一件事是删除activity . onpause()中对侦听器对象的引用，否则您的活动上下文实例将泄漏，这不好。

注意:此方法仅在应用程序/活动/任务是唯一访问服务的进程时有用。如果不是这种情况，你必须使用选项1。或2。

与服务通信有三种明显的方式:

使用意图 使用AIDL 使用服务对象本身(作为单例)

在你的情况下，我选择第三种。对它自己的服务做一个静态引用，并在onCreate()中填充它:

void onCreate(Intent i) {
  sInstance = this;
}

创建一个静态函数MyService getInstance()，该函数返回静态sInstance。

Then in Activity.onCreate() you start the service, asynchronously wait until the service is actually started (you could have your service notify your app it's ready by sending an intent to the activity.) and get its instance. When you have the instance, register your service listener object to you service and you are set. NOTE: when editing Views inside the Activity you should modify them in the UI thread, the service will probably run its own Thread, so you need to call Activity.runOnUiThread().

您需要做的最后一件事是删除activity . onpause()中对侦听器对象的引用，否则您的活动上下文实例将泄漏，这不好。

注意:此方法仅在应用程序/活动/任务是唯一访问服务的进程时有用。如果不是这种情况，你必须使用选项1。或2。

使用信使是在服务和活动之间进行通信的另一种简单方法。

在Activity中，创建带有相应Messenger的Handler。这将处理来自服务的消息。

class ResponseHandler extends Handler {
    @Override public void handleMessage(Message message) {
            Toast.makeText(this, "message from service",
                    Toast.LENGTH_SHORT).show();
    }
}
Messenger messenger = new Messenger(new ResponseHandler());

Messenger可以通过将其附加到Message来传递给服务:

Message message = Message.obtain(null, MyService.ADD_RESPONSE_HANDLER);
message.replyTo = messenger;
try {
    myService.send(message);
catch (RemoteException e) {
    e.printStackTrace();
}

在API演示中可以找到完整的示例:MessengerService和MessengerServiceActivity。关于MyService如何工作，请参阅完整的示例。

使用LocalBroadcastManager注册一个接收器来监听本地服务在你的应用内发送的广播，参考如下:

http://developer.android.com/reference/android/support/v4/content/LocalBroadcastManager.html

绑定是另一种通信方式

创建回调

public interface MyCallBack{

   public void getResult(String result);

}

活动方面:

Implement the interface in the Activity Provide the implementation for the method Bind the Activity to Service Register and Unregister Callback when the Service gets bound and unbound with Activity. public class YourActivity extends AppCompatActivity implements MyCallBack{ private Intent notifyMeIntent; private GPSService gpsService; private boolean bound = false; @Override public void onCreate(Bundle sis){ // activity code ... startGPSService(); } @Override public void getResult(String result){ // show in textView textView.setText(result); } @Override protected void onStart() { super.onStart(); bindService(); } @Override protected void onStop() { super.onStop(); unbindService(); } private ServiceConnection serviceConnection = new ServiceConnection() { @Override public void onServiceConnected(ComponentName className, IBinder service) { GPSService.GPSBinder binder = (GPSService.GPSBinder) service; gpsService= binder.getService(); bound = true; gpsService.registerCallBack(YourActivity.this); // register } @Override public void onServiceDisconnected(ComponentName arg0) { bound = false; } }; private void bindService() { bindService(notifyMeIntent, serviceConnection, Context.BIND_AUTO_CREATE); } private void unbindService(){ if (bound) { gpsService.registerCallBack(null); // unregister unbindService(serviceConnection); bound = false; } } // Call this method somewhere to start Your GPSService private void startGPSService(){ notifyMeIntent = new Intent(this, GPSService.class); startService(myIntent ); } }

服务端:

Initialize callback Invoke the callback method whenever needed public class GPSService extends Service{ private MyCallBack myCallback; private IBinder serviceBinder = new GPSBinder(); public void registerCallBack(MyCallBack myCallback){ this.myCallback= myCallback; } public class GPSBinder extends Binder{ public GPSService getService(){ return GPSService.this; } } @Nullable @Override public IBinder onBind(Intent intent){ return serviceBinder; } }

正如Madhur提到的，您可以使用总线进行通信。

在使用总线的情况下，您有一些选择:

Otto事件总线库(已弃用，支持RxJava)

http://square.github.io/otto/

绿色机器人的EventBus

http://greenrobot.org/eventbus/

NYBus (RxBus，使用RxJava实现。非常类似于EventBus)

https://github.com/MindorksOpenSource/NYBus