Android service的开启和绑定，以及调用service的方法

界面：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"              android:orientation="vertical"              android:layout_width="fill_parent"              android:layout_height="fill_parent"        >    <Button android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="开启服务"            android:onClick="start"            />    <Button android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="关闭服务"            android:onClick="close"            />    <Button android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="绑定服务"            android:onClick="bind"            />    <Button android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="取消绑定服务"            android:onClick="unbind"            />    <Button android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="调用服务的方法function()"            android:onClick="callFunction"            /></LinearLayout>

Activity

package com.example.serviceTest;import android.app.Activity;import android.content.ComponentName;import android.content.Intent;import android.content.ServiceConnection;import android.os.Bundle;import android.os.IBinder;import android.view.View;public class MyActivity extends Activity {    private IService myBinder;    private ServiceConnection myConn = new MyConn();    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);    }    public void start(View view) {        startService(new Intent(this, TestService.class));    }    /**     * 多次调用停止服务，没有出现问题（不能多次解绑）     */    public void close(View view) {        stopService(new Intent(this, TestService.class));    }    public void bind(View view) {        Intent intent = new Intent(this, TestService.class);        bindService(intent, myConn, BIND_AUTO_CREATE);    }    /**     * 多次解绑服务会报出错误     */    public void unbind(View view) {        unbindService(myConn);    }    public void callFunction(View view) {        if (myBinder != null) {            myBinder.callFunction();        }    }    //绑定的时候，回调的一些方法    class MyConn implements ServiceConnection {        @Override        public void onServiceConnected(ComponentName name, IBinder service) {            System.out.println("获取到binder");            myBinder = (IService) service;        }        @Override        public void onServiceDisconnected(ComponentName name) {            System.out.println("com.example.serviceTest.MyActivity.MyConn.onServiceDisconnected");        }    }}

Service

package com.example.serviceTest;import android.app.Service;import android.content.Intent;import android.os.Binder;import android.os.IBinder;import android.widget.Toast;/** * Created by Heyiyong on 14-5-16. */public class TestService extends Service {    public IBinder onBind(Intent intent) {        System.out.println("服务被绑定了！");        return new MyBinder();    }    //中间人（service的代理）    private class MyBinder extends Binder implements IService{        public void callFunction() {            function();        }    }    @Override    public void onCreate() {        System.out.println("com.example.serviceTest.TestService.onCreate");    }    @Override    public int onStartCommand(Intent intent, int flags, int startId) {        System.out.println("com.example.serviceTest.TestService.onStartCommand");        return super.onStartCommand(intent, flags, startId);    }    @Override    public void onDestroy() {        System.out.println("com.example.serviceTest.TestService.onDestroy");    }    @Override    public boolean onUnbind(Intent intent) {        System.out.println("com.example.serviceTest.TestService.onUnbind");        return super.onUnbind(intent);    }    public void function() {        Toast.makeText(getApplicationContext(), "function()方法被调用了！", 1).show();        System.out.println("com.example.serviceTest.TestService.function");    }}

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