Android ViewPager图片轮播

PagerAdapter

    private PagerAdapter pagerAdapter = new PagerAdapter() {        public Object instantiateItem(View container, int position) {            ImageView imageView = new ImageView(context);            imageView.setImageResource(R.drawable.ic_launcher);            return imageView;        }        public void destroyItem(android.view.ViewGroup container, int position,                Object object) {            container.removeView((View) object);        }        @Override        public boolean isViewFromObject(View view, Object object) {            return view == object;        }        @Override        public int getCount() {            return 3;        }    };