Service更新UI

來自：http://www.cnblogs.com/gqsblog/archive/2012/04/17/2453378.html

直接貼代碼：

 

package com.gqs.activity;import android.app.Activity;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.content.ServiceConnection;import android.os.Bundle;import android.os.IBinder;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;import com.gqs.service.UpdateService;import com.gqs.service.UpdateService.MyBinder;import com.gqs.service.UpdateService.UpdateData;public class ServiceToActivityActivity extends Activity { /** Called when the activity is first created. */     private TextView tv; private UpdateService.MyBinder binder; private Button btnStart; private ServiceConnection conn=new ServiceConnection() { @Override public void onServiceDisconnected(ComponentName name) { // TODO Auto-generated method stub  } @Override public void onServiceConnected(ComponentName name, IBinder service) { // TODO Auto-generated method stub             binder=(MyBinder) service; tv.setText("已鏈接"); } }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); btnStart=(Button)findViewById(R.id.btnStart); tv=(TextView)findViewById(R.id.textView); Intent intent=new Intent(this,UpdateService.class); bindService(intent, conn, Context.BIND_AUTO_CREATE); btnStart.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub                 if(binder!=null) { binder.setDate(tv, new UpdateData() { @Override public void update(TextView tv, int data) { // TODO Auto-generated method stub                             tv.setText(data+""); } }); } else { Toast.makeText(getApplicationContext(), "鏈接失敗", 1).show(); } } }); } @Override protected void onDestroy() { // TODO Auto-generated method stub  unbindService(conn); super.onDestroy(); } }

package com.gqs.service; 
 import android.app.Service; import android.content.Intent; import android.os.Binder; import android.os.Handler; import android.os.IBinder; import android.os.Message; import android.widget.TextView; 
 public class UpdateService extends Service {     private int data;     private Handler handler; 
  @Override     public IBinder onBind(Intent intent) {         // TODO Auto-generated method stub          return new MyBinder();  } 
     public class MyBinder extends Binder {         public void setDate(final TextView tv, final UpdateData updata) {             new Thread(new MyThread()).start();             handler = new Handler() {                 public void handleMessage(Message msg) {  updata.update(tv, data);  }  };  }  } 
     public class MyThread implements Runnable { 
  @Override         public void run() {             while (true) {                 data++;                 Message msg = handler.obtainMessage();                 msg.arg1 = data;  handler.sendMessage(msg);                 try {                     Thread.sleep(1000);                 } catch (InterruptedException e) {                     // TODO Auto-generated catch block   e.printStackTrace();  }  }  } 
  } 
     public interface UpdateData {         public void update(TextView tv, int data); 
  } }