Android(安卓)Service简单示例

在这里给大家一个Service小实例，主要有两个文件Activity1.java , MusicService.java

Activity1.java

import android.app.Activity;import android.content.Intent;import android.media.MediaPlayer;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class Activity1 extends Activity{     public void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.main);//从main.xml布局中获得Button对象Button button_start = (Button)findViewById(R.id.start);Button button_stop = (Button)findViewById(R.id.stop);//设置按钮（Button）监听button_start.setOnClickListener(start);        button_stop.setOnClickListener(stop);       }//开始按钮private OnClickListener start = new OnClickListener()    {        public void onClick(View v)        {           //开启Service                Intent intent=new Intent("com");        intent.setClass(Activity01.this, MusicService.class);         startService(intent);        }    };   //停止按钮    private OnClickListener stop = new OnClickListener()    {        public void onClick(View v)        {        //停止Service        Intent intent=new Intent("com");        intent.setClass(Activity01.this, MusicService.class);        stopService(intent);               }    };}

MusicService.java

import android.app.Service;import android.content.Intent;import android.media.MediaPlayer;import android.os.IBinder;public class MusicService extends Service{//MediaPlayer对象private MediaPlayerplayer;public IBinder onBind(Intent arg0){return null;}public void onStart(Intent intent, int startId){super.onStart(intent, startId);//这里可以理解为装载音乐文件player = MediaPlayer.create(this, R.raw.test);//test.map3//开始播放player.start();}public void onDestroy(){super.onDestroy();//停止音乐-停止Serviceplayer.stop();}}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"      package="com.yarin.android.Examples_03_03"      android:versionCode="1"      android:versionName="1.0">    <application android:icon="@drawable/icon" android:label="@string/app_name">        <activity android:name=".Activity01"                  android:label="@string/app_name">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <service android:name=".MusicService">          <intent-filter>              <action android:name="com" />              <category android:name="android.intent.category.default" />          </intent-filter>        </service>                         <activity android:name="MediaPlayerStudy" />    </application>    <uses-sdk android:minSdkVersion="5" /></manifest>

以下是截图：

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