服务在棒棒糖中不起作用

Question

我尝试用服务创建一些应用程序（对于backsound），我尝试在手机中运行应用程序，但没有问题，但是当我的朋友运行我的应用程序时，它不起作用，我的手机是Jellybean而我的朋友是棒棒糖。

这是我的代码活动：

package com.example.michael.fordear;

import android.app.Activity;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.util.Log;
import android.widget.ImageView;

import com.example.michael.switchcard.R;

/**
 * Created by Michael on 19/11/2015.
 */
public class frag1 extends Activity
{
    ImageView iv;
    MyTimer tim1;
    MyTimer1 tim2;
    MyTimer2 tim3;
    MediaPlayer mediaPlayer;
    BackgroundSoundService sv;
    Intent svc;


    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.frag1);

        iv = (ImageView) findViewById(R.id.open);
        iv.setImageResource(R.drawable.open);

        svc=new Intent(this, BackgroundSoundService.class);
        tim1 = new MyTimer(5000,10);

        tim1.start();
        startService(svc);



    }

    public class MyTimer extends CountDownTimer
    {
        public MyTimer(long millisInFuture, long countDownInterval) {
            super(millisInFuture, countDownInterval);
            // TODO Auto-generated constructor stub
        }

        @Override
        public void onFinish() // Jika waktu sesion habis
        {
            // TODO Auto-generated method stub
            iv.setImageResource(R.drawable.ms1);
            tim2 = new MyTimer1(35000, 10);
            tim2.start();
            Log.d("TAG", "fin");
        }

        @Override
        public void onTick(long millisUntilFinished)
        {
            // TODO Auto-generated method stub
        }

    }

    public class MyTimer1 extends CountDownTimer
    {
        public MyTimer1(long millisInFuture, long countDownInterval)
        {
            super(millisInFuture, countDownInterval);
            // TODO Auto-generated constructor stub
        }

        @Override
        public void onFinish() // Jika waktu sesion habis
        {
            // TODO Auto-generated method stub
            iv.setImageResource(R.drawable.ms2);
            Log.d("TAG", "fin");
            tim3 = new MyTimer2(6000, 10);
            tim3.start();
        }

        @Override
        public void onTick(long millisUntilFinished)
        {
            // TODO Auto-generated method stub
        }

    }

    public class MyTimer2 extends CountDownTimer
    {
        public MyTimer2(long millisInFuture, long countDownInterval)
        {
            super(millisInFuture, countDownInterval);
            // TODO Auto-generated constructor stub
        }

        @Override
        public void onFinish() // Jika waktu sesion habis
        {
            // TODO Auto-generated method stub
            iv.setImageResource(R.drawable.end);

            Log.d("TAG", "fin");
        }

        @Override
        public void onTick(long millisUntilFinished)
        {
            // TODO Auto-generated method stub
        }

    }


    @Override
    public void onBackPressed()
    {
        super.onBackPressed();
        onStop();
        finish();
    }
}

这是服务

package com.example.michael.fordear;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;

import com.example.michael.switchcard.R;

/**
 * Created by Michael on 19/11/2015.
 */
public class BackgroundSoundService extends Service
{

    private static final String TAG = null;
    MediaPlayer player;
    public IBinder onBind(Intent arg0) {

        return null;
    }
    @Override
    public void onCreate()
    {
        super.onCreate();
        player = MediaPlayer.create(this, R.raw.cobamp3);
        player.setLooping(false); // Set looping
        player.setVolume(100, 100);
    }
    public int onStartCommand(Intent intent, int flags, int startId) {
        player.start();
        return 1;
    }

    public void onStart(Intent intent, int startId) {
        // TO DO
    }
    public IBinder onUnBind(Intent arg0) {
        // TO DO Auto-generated method
        return null;
    }

    public void onStop() {

    }
    public void onPause() {

    }
    @Override
    public void onDestroy() {
        player.stop();
        player.release();
    }

    @Override
    public void onLowMemory() {

    }
}

所以我的朋友可以在他的Lollipop Android中运行我的应用程序吗？