android后台运行服务，加验证

在写服务的情况下，我们需要开机自启动服务。网上很多代码都有问题，以下是我亲自试验过可行的。

接下来创建一个服务此服务会自动播放歌曲，用来验证服务是否正确运行

import android.app.Service;import android.content.Intent;import android.media.MediaPlayer;import android.os.IBinder;import android.util.Log;import android.widget.Toast;public class musicServer extends  Service {private static String TAG = "musicServer";private MediaPlayer mPlayer;@Overridepublic void onCreate() {Toast.makeText(this, "MusicSevice onCreate()", Toast.LENGTH_SHORT).show();Log.e(TAG, "MusicSerice onCreate()");mPlayer = MediaPlayer.create(getApplicationContext(), R.raw.musi);//设置可以重复播放mPlayer.setLooping(true);super.onCreate();}@Overridepublic IBinder onBind(Intent intent) {Toast.makeText(this, "MusicSevice onBind()",Toast.LENGTH_SHORT).show();Log.e(TAG, "MusicSerice onBind()");mPlayer.start();return null;}@Overridepublic void onStart(Intent intent, int startId) {// TODO Auto-generated method stubsuper.onStart(intent, startId);Toast.makeText(this, "MusicSevice onStart()", Toast.LENGTH_SHORT).show();Log.e(TAG, "MusicSerice onStart()");mPlayer.start();super.onStart(intent, startId);}@Overridepublic void onDestroy() {// TODO Auto-generated method stubsuper.onDestroy();Toast.makeText(this, "MusicSevice onDestroy()", Toast.LENGTH_SHORT).show();Log.e(TAG, "MusicSerice onDestroy()");mPlayer.stop();super.onDestroy();}//其它对象通过unbindService方法通知该Service时该方法被调用@Overridepublic boolean onUnbind(Intent intent) {Toast.makeText(this, "MusicSevice onUnbind()", Toast.LENGTH_SHORT).show();Log.e(TAG, "MusicSerice onUnbind()");mPlayer.stop();return super.onUnbind(intent);}}

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