[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;

	@Override
	public 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() {

		@Override
		public void onServiceDisconnected(ComponentName name) {
			myService = null;
		}

		@Override
		public 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();
	@Override
	public 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");
	}

	@Override
	public 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();
	}

	@Override
	public 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