Android_viewpager适配器

class Myadapter extends PagerAdapter{    @Override    public int getCount() {        return list.size();    }    @Override    public boolean isViewFromObject(View view, Object object) {        return view==object;    }    @Override    public Object instantiateItem(ViewGroup container, int position) {        View view = View.inflate(MainActivity.this,R.layout.viewpager,null);        ImageView imageview = (ImageView)view.findViewById(R.id.imageView);        ImageLoader.getInstance().displayImage(list.get(position).getImg(),imageview);        container.addView(view);        return view;    }    @Override    public void destroyItem(ViewGroup container, int position, Object object) {        container.removeView((View) object);    }}