I use MediaPlayer play music, code the following

 
Musicplayer=null; 
Musicplayer=new MediaPlayer (); 
Try {
Musicplayer. SetDataSource (dataUrl); 
Musicplayer. Prepare (); 
Musicplayer. Start (); 
} the catch (IOException e) {
e.printStackTrace(); 
} 

The writing on the current activity pause, a song, a capital, no problem, but if I go back to an activity on the list (music) choose music to play the activity, it will be a few minutes to play the music in the song I chose, for the first time to play the activity is not the problem
Attached upload code value:

 
Intent Intent=new Intent (MainActivity. This, MusicPlayerActivity. Class); 
Bundle Bundle=new Bundle (); 
Bundle. PutParcelableArrayList (" gates ", musicMessige); 
Bundle. PutInt (" id ", I); 
Intent. PutExtras (bundle); 
startActivity(intent);