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     }5 public     CallBack Getcallback () {6         return callback;7     }

3.

1     @Override 2 public     void OnCreate () {3         //TODO auto-generated method Stub 4         super.oncreate (); 5         Run Ning=true; 6         New Thread () {7 public             void Run () {8                 int i=0, 9 while                 (running) {                     i++;11                     String str=i+ ":" +d ata;12                     log.d ("Learnservice", str),                     if (callback!=null) {                         callback.ondatachange (str);                     }16                     try {+                         sleep (+)                     } catch (Interruptedexception e) {n                         //TODO auto-generated Catch Block20                         e.printstacktrace ();                     }22                 }23             };24         }.start ();     

The 4.MyBinder provides methods to return Bindservice instances.

1 public     class Mybinder extends binder{2 public         void SetData (String data) {3             myservice.this.data=data;4         }5 public         myservice GetService () {6             return myservice.this;7         }8     }

5.

1         @Override 2 public         void onserviceconnected (componentname name, IBinder service) {3             //TODO auto-generated Method Stub 4             binder= (mybinder) service; 5             Binder.getservice (). Setcallback (New Myservice.callback () {6                  7                 @Override 8 public                 void OnDataChange (String data) {9                     //TODO auto-generated method stub10                     Message msg=n EW Message ();                     bundle bundle=new bundle ();                     bundle.putstring ("Data", data),                     Msg.setdata (bundle) ;                     handler.sendmessage (msg);                 }16             });         }18     };

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

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

Android Development Bindservice () listens for service internals

Android Development Bindservice () listens for service internal status