An example of a viewpager adapter that supports getting a reference to the current view. This is required as the viewpager only keeps 3 items in memory so trying to get the item using the current item index does not work.

imageview_pager_adapter_currentview

/**
 * Pager adapter to display a feed item image in a square image view
 */
public class MultipleFeedPostItemAdapter extends PagerAdapter {

    private final Context mContext;
    private List<FeedItem> mFeedPosts = new ArrayList<>();
    private ImageView mCurrentView;

    public MultipleFeedPostItemAdapter(final Context pContext, final List<FeedItem> pFeedPosts) {
        mContext = pContext;
        mFeedPosts = pFeedPosts;
    }

    @Override
    public int getCount() {
        return mFeedPosts.size();
    }

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

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        final SquareImageView imageView = new SquareImageView(mContext);
        imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
        final String location = mFeedPosts.get(position).getContents().getImageLocation().getLocation();
        MCImageLoader.safeGlideImageLoad(mContext, location, imageView);
        container.addView(imageView, 0);
        return imageView;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        ((ImageView) object).setImageResource(0);
        container.removeView((ImageView) object);
    }

    @Override
    public void setPrimaryItem(ViewGroup container, int position, Object object) {
        mCurrentView = (ImageView)object;
    }

    public ImageView getCurrentView() {
        return mCurrentView;
    }
}