FAB play MediaPlayer

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                int scrno = mViewPager.getCurrentItem();
                if (scrno==1){
                    mediaPlayer= MediaPlayer.create(getApplicationContext(),R.raw.s1);
                }
                else if (scrno==2){
                    mediaPlayer= MediaPlayer.create(getApplicationContext(),R.raw.s2);
                }
                else if (scrno==3){
                    mediaPlayer= MediaPlayer.create(getApplicationContext(),R.raw.s3);
                }
                else if (scrno==4){
                    mediaPlayer= MediaPlayer.create(getApplicationContext(),R.raw.s4);
                }
                else if (scrno==5){
                    mediaPlayer= MediaPlayer.create(getApplicationContext(),R.raw.s5);
                }
                mediaPlayer.start();
            }//end onClick FAB
            MediaPlayer mediaPlayer;
        });