private Context ctx;
private int pos;
private LayoutInflater inflater;
private ImageView ivGallery;
ArrayList<Uri> mArrayUri;
public GalleryAdapter(Context ctx, ArrayList<Uri> mArrayUri) {

    this.ctx = ctx;
    this.mArrayUri = mArrayUri;
}

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

@Override
public Object getItem(int position) {
    return mArrayUri.get(position);
}

@Override
public long getItemId(int position) {
    return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
    pos = position;
    inflater = (LayoutInflater) ctx
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View itemView = inflater.inflate(R.layout.gv_item, parent, false);
    ivGallery = (ImageView) itemView.findViewById(R.id.ivGallery);
    ivGallery.setImageURI(mArrayUri.get(position));
    return itemView;
}

private List<ImageView> images;

public ImagePageAdapter(List<ImageView> images) {
    this.images = images;
}

@Override
public Object instantiateItem(ViewGroup container, int position) {
    ImageView imageView = images.get(position);
    container.addView(imageView);
    return imageView;
}

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

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

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