ActImagePager.java

package my.project.washingcar.activity;

import my.project.washingcar.R;
import my.project.washingcar.utils.ImageUtil;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.ProgressBar;

import com.nostra13.universalimageloader.core.assist.FailReason;
import com.nostra13.universalimageloader.core.assist.SimpleImageLoadingListener;

public class ActImagePager extends ActBase {

	private ViewPager pager;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.act_image_pager);
		init();
	}

	private void init() {
		initView();
		initData();
	}

	private void initView() {
		pager = (ViewPager) findViewById(R.id.pager);
	}

	private void initData() {
		Bundle bundle = getIntent().getExtras();
		assert bundle != null;
		// String[] imageUrls = bundle.getStringArray(Extra.IMAGES);
		String url = "http://cz.focus.cn/ztdir/wdky/ztimages/cswd.jpg";
		String[] imageUrls = new String[5];
		for (int i = 0; i < imageUrls.length; i++) {
			imageUrls[i] = url;
		}
		pager = (ViewPager) findViewById(R.id.pager);
		pager.setAdapter(new ImagePagerAdapter(imageUrls));
	}

	private class ImagePagerAdapter extends PagerAdapter {

		private String[] images;
		private LayoutInflater inflater;

		ImagePagerAdapter(String[] images) {
			this.images = images;
			inflater = getLayoutInflater();
		}

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

		@Override
		public int getCount() {
			return images.length;
		}

		@Override
		public Object instantiateItem(ViewGroup view, int position) {
			View imageLayout = inflater.inflate(R.layout.item_pager_image,
					view, false);
			assert imageLayout != null;
			ImageView imageView = (ImageView) imageLayout
					.findViewById(R.id.image);
			final ProgressBar spinner = (ProgressBar) imageLayout
					.findViewById(R.id.loading);

			ImageUtil.display(images[position], imageView,
					new SimpleImageLoadingListener() {
						@Override
						public void onLoadingStarted(String imageUri, View view) {
							spinner.setVisibility(View.VISIBLE);
						}

						@Override
						public void onLoadingFailed(String imageUri, View view,
								FailReason failReason) {
							showToast(R.string.image_load_error);
							spinner.setVisibility(View.GONE);
						}

						@Override
						public void onLoadingComplete(String imageUri,
								View view, Bitmap loadedImage) {
							spinner.setVisibility(View.GONE);
						}
					});
			view.addView(imageLayout, 0);
			return imageLayout;
		}

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

		@Override
		public void restoreState(Parcelable state, ClassLoader loader) {
		}

		@Override
		public Parcelable saveState() {
			return null;
		}
	}
}