In Android, How can I avoid the onStart method from being deprecated?

Use onStartCommand().

It you want to know more about how they change it, refer to google documentation like below.

// This is the old onStart method that will be called on the pre-2.0// platform.  On 2.0 or later we override onStartCommand() so this// method will not be called.@Overridepublic void onStart(Intent intent, int startId) {    handleStart(intent, startId);}@Overridepublic int onStartCommand(Intent intent, int flags, int startId) {    handleStart(intent, startId);    return START_NOT_STICKY;}

You can use like this with onStartCommand().

package htin.linnzaw.service;import android.app.Service;import android.content.Intent;import android.media.MediaPlayer;import android.os.IBinder;import android.widget.Toast;public class MyService extends Service{    private MediaPlayer mediaplayer;    public MyService()    {    }    @Override    public IBinder onBind(Intent intent)    {        // TODO: Return the communication channel to the service.        throw new UnsupportedOperationException("Not yet implemented");    }    @Override    public void onCreate()    {        Toast.makeText(this, "Service created", Toast.LENGTH_SHORT).show();        mediaplayer = MediaPlayer.create(this, R.raw.eventually);        mediaplayer.setLooping(false);    }    @Override    public int onStartCommand(Intent intent, int flags, int startid)    {        Toast.makeText(this, "Service  Started", Toast.LENGTH_SHORT).show();        mediaplayer.start();        return startid;    }    @Override    public void onDestroy()    {        Toast.makeText(this, "Service stopped", Toast.LENGTH_SHORT).show();        mediaplayer.stop();    }}