package com.mycompany.myapplication;

import android.media.MediaPlayer;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;

public class FirstActivity extends AppCompatActivity {
public static MediaPlayer mp=null;
ViewPager viewPager;
FirstCustomSwipeAdapter adapter;
private int[] mAudio=new int[]{R.raw.sound_11,R.raw.sound_12,R.raw.sound_13};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_first);
    viewPager = (ViewPager) findViewById(R.id.view_pager);
    adapter = new FirstCustomSwipeAdapter((this));
    viewPager.setAdapter(adapter);
    viewPager.setOnPageChangeListener(mOnPageListener);

}
public OnPageChangeListener mOnPageListener=new OnPageChangeListener() {
    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {}

    @Override
    public void onPageSelected(int position) {
        if (mp !=null){
            mp.stop();
        }
        mp= MediaPlayer.create(FirstActivity.this,mAudio[position]);
        mp.start();
    }

    @Override
    public void onPageScrollStateChanged(int state) {}
};
}