轮播图PagerAdapter

public class AdapterVpHomeFragBanner extends PagerAdapter {
    private final DisplayImageOptions mOptions;
    private List<HomeEntity.HomeBannerEntity> mHomeBannerEntities;
    private Activity mActivity;
    private LayoutInflater mLayoutInflater;

    public AdapterVpHomeFragBanner(List<HomeEntity.HomeBannerEntity> homeBannerEntities, Activity activity) {
        mHomeBannerEntities = homeBannerEntities;
        mActivity = activity;
        mLayoutInflater=mActivity.getLayoutInflater();
        mOptions = new DisplayImageOptions.Builder()
                .showImageForEmptyUri(R.drawable.product_loading)
                .showImageOnFail(R.drawable.product_loading)
                .showImageOnLoading(R.drawable.product_loading)
                .resetViewBeforeLoading(true)
                .cacheOnDisk(true)
                .imageScaleType(ImageScaleType.EXACTLY)
                .bitmapConfig(Bitmap.Config.RGB_565)
                .considerExifParams(false)
                .displayer(new FadeInBitmapDisplayer(300))
                .build();
    }

    @Override
    public int getCount() {
        return 50000;
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        ImageView imageView= (ImageView) mLayoutInflater.inflate(R.layout.item_vp_home_frag_banner,container,false);
        container.addView(imageView);
        ImageLoader.getInstance().displayImage(mHomeBannerEntities.get(position%mHomeBannerEntities.size()).getPic(),imageView,mOptions);
        return imageView;
    }

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

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