Android 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 MediaPlayer	player;

	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Service
		player.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：