ViewPager 适配器之PagerAdapter

   class MyViewPagerAdapter extends PagerAdapter{

        @Override
        public int getCount() {
            return imageViews.size();
        }
         /**
         * @param view   当前页面View
         * @param object  instantiateItem 返回的对象
         * @return
         */
        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view ==object;
        }

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

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
//            super.destroyItem(container, position, object);//注意屏蔽此行
            container.removeView((View) object);
        }
    }