1 ackage com.hsiehway.servicedemo01; 2  3 import android.app.Service; 4 import android.content.Intent; 5 import android.media.MediaPlayer; 6 import android.os.IBinder; 7  8 public class PlayMusicService extends Service { 9 10     private MediaPlayer mMediaPlayer;11 12     public PlayMusicService() {13     }14 15     @Override16     public IBinder onBind(Intent intent) {17         // TODO: Return the communication channel to the service.18         throw new UnsupportedOperationException("Not yet implemented");19     }20 21     @Override22     public int onStartCommand(Intent intent, int flags, int startId) {23         System.out.println("Service Start");24         mMediaPlayer = MediaPlayer.create(this,R.raw.gem);//gem.mp325         mMediaPlayer.start();26         return super.onStartCommand(intent, flags, startId);27     }28 29     @Override30     public void onDestroy() {31         System.out.println("Service Stop");32         super.onDestroy();33         mMediaPlayer.stop();34     }35 }

 1 package com.hsiehway.servicedemo01; 2  3 import android.content.Intent; 4 import android.support.v7.app.AppCompatActivity; 5 import android.os.Bundle; 6 import android.view.View; 7 import android.widget.Button; 8  9 public class MainActivity extends AppCompatActivity {10 11     private Button startBtn,stopBtn;12 13     @Override14     protected void onCreate(Bundle savedInstanceState) {15         super.onCreate(savedInstanceState);16         setContentView(R.layout.activity_main);17 18         startBtn = (Button)findViewById(R.id.startbtn);19         stopBtn  = (Button)findViewById(R.id.stopbtn);20 21         startBtn.setOnClickListener(new startListener());22         stopBtn.setOnClickListener(new stopListener());23     }24 25     class startListener implements View.OnClickListener{26         @Override27         public void onClick(View view) {28             Intent intent = new Intent(MainActivity.this,PlayMusicService.class);29             startService(intent);30 31         }32     }33 34     class stopListener implements View.OnClickListener{35         @Override36         public void onClick(View view) {37             Intent intent = new Intent(MainActivity.this,PlayMusicService.class);38             stopService(intent);39 40         }41     }42 }