MainActivity.java

package com.example.day23_service_demo3;

import com.example.day23_service_demo3.MyService.MyBinder;

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.widget.TextView;

public class MainActivity extends Activity {

    private MyServiceConn conn;

    private TextView tv;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        conn = new MyServiceConn();

        tv = (TextView) findViewById(R.id.tv);

    }

    //绑定服务

    public void MyBindServiceClick(View v){

        Intent intent = new Intent(MainActivity.this, MyService.class);

        /**

         * 参数1:intent对象  指明绑定的组件

         * 参数2:当前服务的链接状态

         * 参数3:绑定服务的标记   :绑定且创建

         */

        bindService(intent, conn, Context.BIND_AUTO_CREATE);

    }

    //解除绑定服务

    public void MyUnBindServiceClick(View v){

        unbindService(conn);

    }

    /**

     * 创建服务的链接对象 MyServiceConn

     * @author sxy

     *

     */

    class MyServiceConn implements ServiceConnection{

        /**

         * 表示当前服务连接成功后回调此方法

         * 参数1:组件名称

         * 参数2:连接后onBind() 返回的对象

         */

        @Override

        public void onServiceConnected(ComponentName name, IBinder service) {

            // TODO Auto-generated method stub

            MyBinder myBinder = (MyBinder) service;

            //获取到Service对象

            MyService myService = myBinder.getService();

            int num = myService.getRandom();

            tv.setText(num+"");

        }

        /**

         * 失去连接回调此方法

         */

        @Override

        public void onServiceDisconnected(ComponentName name) {

            // TODO Auto-generated method stub

            conn = null;

        }

    }

}

MyService.java

package com.example.day23_service_demo3;

import android.app.Service;

import android.content.Intent;

import android.os.Binder;

import android.os.IBinder;

import android.util.Log;

public class MyService extends Service{

    private  static final String TAG ="MyService";

    /**

     * 必须实现的方法   绑定服务时调用的方法

     */

    @Override

    public IBinder onBind(Intent intent) {

        // TODO Auto-generated method stub

        Log.e(TAG , "===onBind===");

        return new MyBinder();

    }

    //创建MyBinder类  将MyBinder传递给 绑定源   Service 不能直接去new 通过传递才可以

    public class MyBinder extends Binder{

        public MyService getService(){

            return MyService.this;

        }

    } 

    /**

     * 随机数

     * @return

     */

    public int getRandom(){

        return (int) (Math.random()*10+1);

    }

    /**

     * 表示服务创建时调用

     */

    @Override

    public void onCreate() {

        // TODO Auto-generated method stub

        super.onCreate();

        Log.e(TAG , "===onCreate===");

    }

    @Override

    public int onStartCommand(Intent intent, int flags, int startId) {

        // TODO Auto-generated method stub

        Log.e(TAG , "===onStartCommand===");

        return START_NOT_STICKY;

    }

    /**

     * 解除绑定时 调用此方法

     */

    @Override

    public boolean onUnbind(Intent intent) {

        // TODO Auto-generated method stub

        Log.e(TAG , "===onUnbind===");

        return super.onUnbind(intent);

    }

    /**

     * Service销毁时调用此方法

     */

    @Override

    public void onDestroy() {

        // TODO Auto-generated method stub

        super.onDestroy();

        Log.e(TAG , "===onDestroy===");

    }

}

清单文件

AndroidManifest.xml

package com.example.day23_service_demo3;

import android.app.Service;

import android.content.Intent;

import android.os.Binder;

import android.os.IBinder;

import android.util.Log;

public class MyService extends Service{

    private  static final String TAG ="MyService";

    /**

     * 必须实现的方法   绑定服务时调用的方法

     */

    @Override

    public IBinder onBind(Intent intent) {

        // TODO Auto-generated method stub

        Log.e(TAG , "===onBind===");

        return new MyBinder();

    }

    //创建MyBinder类  将MyBinder传递给 绑定源   Service 不能直接去new 通过传递才可以

    public class MyBinder extends Binder{

        public MyService getService(){

            return MyService.this;

        }

    } 

    /**

     * 随机数

     * @return

     */

    public int getRandom(){

        return (int) (Math.random()*10+1);

    }

    /**

     * 表示服务创建时调用

     */

    @Override

    public void onCreate() {

        // TODO Auto-generated method stub

        super.onCreate();

        Log.e(TAG , "===onCreate===");

    }

    @Override

    public int onStartCommand(Intent intent, int flags, int startId) {

        // TODO Auto-generated method stub

        Log.e(TAG , "===onStartCommand===");

        return START_NOT_STICKY;

    }

    /**

     * 解除绑定时 调用此方法

     */

    @Override

    public boolean onUnbind(Intent intent) {

        // TODO Auto-generated method stub

        Log.e(TAG , "===onUnbind===");

        return super.onUnbind(intent);

    }

    /**

     * Service销毁时调用此方法

     */

    @Override

    public void onDestroy() {

        // TODO Auto-generated method stub

        super.onDestroy();

        Log.e(TAG , "===onDestroy===");

    }

}