android – Firebase：虽然app退出,但仍会继续监听ChildEventListener

public class ChildEventListener extends service {
        @Override
        public IBinder onBind(Intent intent) {
            return null;
        }
        @Override
        publi@R_944_8592@ onStartCommand(Intent intent,int flags,int startId) {
            //Adding a childevent listener to firebase                
            Firebase myFirebaseRef = new Firebase("FirebaseURL");
            myFirebaseRef.child("FIREBASE_LOCATION").addValueEventListener(new ValueEventListener() {

                @Override
                public void onDataChange(DataSnapshot snapshot) {
                    //Do something using DataSnapshot say call Notification
                }

                @Override
                public void onCancelled(FirebaseError error) {
                    Log.e("The read Failed: ",error.getmessage());
                }
            });

          }

                @Override
                public void onCancelled(FirebaseError firebaseError) {
                    Log.e("The read Failed: ",firebaseError.getmessage());
                }
            });

            return START_STICKY;
       }

  }

在Manifest中注册您的服务

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

启动您的服务并收听childEvents,在何处/何时启动您的服务取决于您的聊天应用程序设计