How to stop music background when specific image is reached?

Question

I have music background in my app.. and want to stop the music when user reaches the last image in my app. If possible, I would like to make the last image to be name as "last" so that it will be better for code and when it recognize that image name "last" is reached it should be able to stop the music ...or it will be great if the music stops smoothly when last image in my app is reached by viewer..Any idea on how to do that ?

Following are my codes...

Mainactivity.java

    import android.app.Activity;
    import android.content.Intent;
    import android.media.MediaPlayer;
    import android.os.Bundle;
    import android.support.v4.view.ViewPager;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.widget.ShareActionProvider;




    public class MainActivity extends Activity {

        MediaPlayer oursong;

      @Override
      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
          oursong = MediaPlayer.create(MainActivity.this, R.raw.a);
          oursong.start ();
        ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
        ImageAdapter adapter = new ImageAdapter(this);
        viewPager.setAdapter(adapter);
      }

      private ShareActionProvider mShareActionProvider;


      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate menu resource file.
          getMenuInflater().inflate(R.menu.activity_main, menu);

          // Locate MenuItem with ShareActionProvider
          MenuItem item = menu.findItem(R.id.menu_item_share);

          // Fetch and store ShareActionProvider
          mShareActionProvider = (ShareActionProvider) item.getActionProvider();

          // Return true to display menu
          return true;
      }

      // Call to update the share intent
      private void setShareIntent(Intent shareIntent) {
          if (mShareActionProvider != null) {
              mShareActionProvider.setShareIntent(shareIntent);
          }
      }

         @Override
         protected void onPause(){
         super.onPause();
          oursong.release();
     }

    }

Imageadapter.java

import java.io.IOException;

import android.app.WallpaperManager;
import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

public class ImageAdapter extends PagerAdapter {
    Context context;
    private final int[] GalImages = new int[] {
        R.drawable.one,
        R.drawable.two,
        R.drawable.three
    };
    ImageAdapter(Context context){
        this.context=context;
    }
    @Override
    public int getCount() {
      return GalImages.length;
    }

    @Override
    public boolean isViewFromObject(View view, Object object) {
      return view == ((ImageView) object);
    }

    @Override
    public Object instantiateItem(ViewGroup container, final int position) {
      ImageView imageView = new ImageView(context);
      int padding = context.getResources().getDimensionPixelSize(R.dimen.padding_small);
      imageView.setPadding(padding, padding, padding, padding);
      imageView.setScaleType(ImageView.ScaleType.FIT_XY);
      imageView.setImageResource(GalImages[position]);

      imageView.setOnClickListener(new View.OnClickListener() {

           public void onClick(View view) {

                    WallpaperManager myWallpaperManager  = WallpaperManager.getInstance(context);
                    try {
                            myWallpaperManager.setResource(GalImages[position]);
                    } catch (IOException e) {
                             // TODO Auto-generated catch block
                             e.printStackTrace();
                    }       

           }

           });


      ((ViewPager) container).addView(imageView, 0);
      return imageView;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
      ((ViewPager) container).removeView((ImageView) object);
    }
  }

Answer 1

Add an OnPageChangeListener to your viewPager and check if the current image is the last one:

viewPager.setOnPageChangeListener(new OnPageChangeListener() {

            @Override
            public void onPageSelected(int pos) {
                if (pos==adapter.getCount()-1) {
                    oursong.stop();
                }

            }

            @Override
            public void onPageScrolled(int arg0, float arg1, int arg2) {
            }

            @Override
            public void onPageScrollStateChanged(int arg0) {
            }
        });