Android Development Bindservice () listens for service internal status

Based on the Bindservice () Communication of Android development , the Bindservice () method is implemented to listen for service internal state.

Implements the listening service internal state, using a callback mechanism

1. First implement an interface

1      Public Static  Interface callback{2         void OnDataChange (String data); 3     }

2.

1     Private CallBack callback=null; 2      Public void Setcallback (CallBack CallBack) {3         this. callBack = callBack; 4     }5public       CallBack getcallback () {6          return  callBack; 7     }

3.

1 @Override2      Public voidonCreate () {3         //TODO auto-generated Method Stub4         Super. OnCreate ();5running=true;6         NewThread () {7              Public voidrun () {8                 intI=0;9                  while(running) {Teni++; OneString str=i+ ":" +data; ALOG.D ("Learnservice", str); -                     if(callback!=NULL) {       - Callback.ondatachange (str);  the                     } -                     Try { -Sleep (1000); -}Catch(interruptedexception e) { +                         //TODO auto-generated Catch block - e.printstacktrace (); +                     } A                 } at             }; - }.start (); -}

The 4.MyBinder provides methods to return Bindservice instances.

1      Public classMybinderextendsbinder{2          Public voidsetData (String data) {3MyService. This. data=data;4         }5          PublicMyService GetService () {6             returnMyService. This;7         }8}

5.

1 @Override2          Public voidonserviceconnected (componentname name, IBinder service) {3             //TODO auto-generated Method Stub4Binder=(mybinder) service;5Binder.getservice (). Setcallback (NewMyservice.callback () {6                 7 @Override8                  Public voidOnDataChange (String data) {9                     //TODO auto-generated Method StubTenMessage msg=NewMessage (); OneBundle bundle=NewBundle (); ABundle.putstring ("Data", data); - Msg.setdata (bundle); - handler.sendmessage (msg); the                 } -             }); -         } -};

6. Via handler, put data on the UI thread and update the UI thread

1     Private Handler handler=New  Handler () {2public         void  handlemessage ( Android.os.Message msg) {3             Tvout.settext (Msg.getdata (). getString ("Data")); 4         }; 5     };

Android Development Bindservice () listens for service internal status