PhotoView+ViewPager

      for (int i = 0; i < img.length; i++) {
            ImageView imageView=new ImageView(this);
            imageView.setImageResource(img[i]);
            PhotoViewAttacher photoViewAttacher = new PhotoViewAttacher(imageView);  //使图片实现可以放大缩小的功能PhotoVIew
            views.add(imageView);
        }
        vp = findViewById(R.id.vp);
        PageAdapter pageAdapter = new PageAdapter(views);
        vp.setAdapter(pageAdapter);

//Adapter
public class PageAdapter extends PagerAdapter {
    List<View> views;
    public PageAdapter(List<View> views) {
        this.views=views;
    }

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

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

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        View view = views.get(position);
        container.addView(view);
        return view;
    }

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