[ZZ][Android]使用bindService启动服务

一般情况下我们使用startService(Intent service)来启动一个服务，但这种情况下无法得到Service对象的引用，通过bindService方法启动服务则可以实现此功能。下面给一个小例子演示一下：

1.调用者

package com.zhf.local;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;/** * 此例的目的就是拿到MyService的引用，从而可以引用其内部的方法和变量 * @author Administrator * */public class LocalServiceActivity extends Activity {/** Called when the activity is first created. */private MyService myService;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);Intent intent = new Intent(this, MyService.class);bindService(intent, connection, Context.BIND_AUTO_CREATE);}private ServiceConnection connection = new ServiceConnection() {@Overridepublic void onServiceDisconnected(ComponentName name) {myService = null;}@Overridepublic void onServiceConnected(ComponentName name, IBinder service) {myService = ((MyService.MyBinder) service).getService();System.out.println("Service连接成功");//执行Service内部自己的方法myService.excute();}};protected void onDestroy() {super.onDestroy();unbindService(connection);};}

2：Service

package com.zhf.local;import android.app.Service;import android.content.Intent;import android.os.Binder;import android.os.IBinder;public class MyService extends Service {    private final IBinder binder=new MyBinder();@Overridepublic IBinder onBind(Intent intent) {return binder;}public class MyBinder extends Binder{MyService getService(){return MyService.this;}}public void excute(){System.out.println("通过Binder得到Service的引用来调用Service内部的方法");}@Overridepublic void onDestroy() {//当调用者退出(即使没有调用unbindService)或者主动停止服务时会调用super.onDestroy();}@Overridepublic boolean onUnbind(Intent intent) {//当调用者退出(即使没有调用unbindService)或者主动停止服务时会调用System.out.println("调用者退出了");return super.onUnbind(intent);}}

转载自http://que2010.iteye.com/blog/1339791

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