Viewpager轮播 网络获取图片

public class MainActivity extends AppCompatActivity {    String imag_url="http://result.eolinker.com/iYXEPGn4e9c6dafce6e5cdd23287d2bb136ee7e9194d3e9?uri=banner";    private ViewPager mVp;    private ListView mLv;    int anInt = 0;    Handler handler=new Handler(){        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            mVp.setCurrentItem(anInt);            anInt++;        }    };    private List<LunBoData.BannerBean> banner;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        vpLunbo();

        new AsyncTask<String, Void, String>() {            @Override            protected String doInBackground(String... strings) {                return new HttpURLUtil().getURLCon(imag_url);            }            @Override            protected void onPostExecute(String s) {                super.onPostExecute(s);                LunBoData boData = new Gson().fromJson(s, LunBoData.class);                banner = boData.getBanner();                mVp.setAdapter(new MyPagerAdapter());            }        }.execute();    }    @SuppressLint("StaticFieldLeak")    private void vpLunbo() {        new Timer().schedule(new TimerTask() {            @Override            public void run() {                handler.sendEmptyMessage(0);            }        },0,1000);    }    private void initView() {        mVp = (ViewPager) findViewById(R.id.vp);        mLv = (ListView) findViewById(R.id.lv);    }    private class MyPagerAdapter extends PagerAdapter {        @Override        public int getCount() {            return Integer.MAX_VALUE;        }        @Override        public Object instantiateItem(ViewGroup container, int position) {            ImageView imageView = new ImageView(MainActivity.this);            ImageLoader.getInstance().displayImage(banner.get(position%banner.size()).getImage_url(),imageView);            container.addView(imageView);            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;        }    }}