media player - Android playing sound on button click -

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i'm trying play multiple times 2 different .wav files on button click. want play sound1 sound2 sound1 , on.. here fragment of code. 

    protected void oncreate(bundle savedinstancestate)      {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_box);         mp = mediaplayer.create(box.this, r.drawable.sound1);         mp2 = mediaplayer.create(box.this, r.drawable.sound2);         handler = new handler();          sbutton.setonclicklistener(new view.onclicklistener()          {             @override             public void onclick(view v)              {                 rounds = new integer(et.gettext().tostring());                 for(int j = 0; j < rounds; j ++)                 {                     f();                     g();                 }              }         });     }      public void f()     {         cdt1 =  new countdowntimer(5000, 1000)         {              public void ontick(long millisuntilfinished)               {               }              public void onfinish()               {                     mp.setlooping(true);                  mp.setvolume(1.0f, 1.0f);                  mp.start();              }}.start();      }     public void g()     {         cdt =  new countdowntimer(7000, 1000)         {              public void ontick(long millisuntilfinished)               {               }              public void onfinish()               {                     mp2.setlooping(true);                  mp2.setvolume(1.0f, 1.0f);                  mp2.start();              }}.start();          }

shall reset them every time play sound ? in advance.

you can check mediaplayer if still playing like:

if (mp.isplaying()) {     //do nothing } else {     //start new sound }

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