BindService例子

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);

    };

}




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);

    }

}