In my Application am using ViewPager to swipe the images,which comes through webservice as URL. Everything goes smoothly,the problem is while swiping myself getting the position as collapsed one.. Swipe left-right: positions are 1,2,3,4,5,etc.. if i stops swiping at 5th pos and started to Swipe from right-left: positions are 2,1...why this happens? I need to catch the position of the imageURL to find out the ID of the specific image and so i need to download and set it as wallpaper..

Normally while we swipe from right-left,the positions should decrease like 4,3,2,1.

Also in debugger mode i got some start position,end position,last position with different values..

Any Clue about ViewPager.

Here is my code:

public class ImagePagerActivity extends BaseActivity {

private ViewPager pager;

private DisplayImageOptions options;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.ac_image_pager);
    Bundle bundle = getIntent().getExtras();
    String[] imageUrls = bundle.getStringArray(Extra.IMAGES);
    int pagerPosition = bundle.getInt(Extra.IMAGE_POSITION, 0);

    options = new DisplayImageOptions.Builder()
        .showImageForEmptyUrl(R.drawable.image_for_empty_url)
        .cacheOnDisc()
        .decodingType(DecodingType.MEMORY_SAVING)
        .build();

    pager = (ViewPager) findViewById(R.id.pager);
    pager.setAdapter(new ImagePagerAdapter(imageUrls));
    pager.setCurrentItem(pagerPosition);
}

private class ImagePagerAdapter extends PagerAdapter {

    private String[] images;
    private LayoutInflater inflater;

    ImagePagerAdapter(String[] images) {
        this.images = images;
        inflater = getLayoutInflater();
    }

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

    @Override
    public void finishUpdate(View container) {
    }

    @Override
    public int getCount() {
        return images.length;
    }

    @Override
    public Object instantiateItem(View view, int position) {

        final FrameLayout imageLayout = (FrameLayout) inflater.inflate(R.layout.item_pager_image, null);
        final ImageView imageView = (ImageView) imageLayout.findViewById(R.id.image);
        final ProgressBar spinner = (ProgressBar) imageLayout.findViewById(R.id.loading);

        imageLoader.displayImage(images[position], imageView, options, new ImageLoadingListener() {
            public void onLoadingStarted() {
                spinner.setVisibility(View.VISIBLE);
            }

            public void onLoadingFailed() {
                spinner.setVisibility(View.GONE);
                imageView.setImageResource(android.R.drawable.ic_delete);
            }

            public void onLoadingComplete() {
                spinner.setVisibility(View.GONE);
            }
        });

        ((ViewPager) view).addView(imageLayout, 0);
        return imageLayout;
    }

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

    @Override
    public void restoreState(Parcelable state, ClassLoader loader) {
    }

    @Override
    public Parcelable saveState() {
        return null;
    }

    @Override
    public void startUpdate(View container) {
    }

  }
 }