128 lines
4.4 KiB
Java
128 lines
4.4 KiB
Java
package com.lzy.ninegrid.preview;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.support.annotation.NonNull;
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import android.support.v4.view.PagerAdapter;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ImageView;
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import android.widget.ProgressBar;
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import com.lzy.ninegrid.ImageInfo;
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import com.lzy.ninegrid.NineGridView;
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import com.lzy.ninegrid.R;
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import java.util.List;
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import uk.co.senab.photoview.PhotoView;
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import uk.co.senab.photoview.PhotoViewAttacher;
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/**
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* ================================================
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* 作 者：廖子尧
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* 版 本：1.0
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* 创建日期：2016/3/21
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* 描 述：
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* 修订历史：
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* ================================================
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*/
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public class ImagePreviewAdapter extends PagerAdapter implements PhotoViewAttacher.OnPhotoTapListener {
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private List<ImageInfo> imageInfo;
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private Context context;
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private View currentView;
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public ImagePreviewAdapter(Context context, @NonNull List<ImageInfo> imageInfo) {
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super();
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this.imageInfo = imageInfo;
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this.context = context;
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}
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@Override
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public int getCount() {
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return imageInfo.size();
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}
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@Override
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public boolean isViewFromObject(View view, Object object) {
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return view == object;
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}
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@Override
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public void setPrimaryItem(ViewGroup container, int position, Object object) {
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super.setPrimaryItem(container, position, object);
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currentView = (View) object;
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}
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public View getPrimaryItem() {
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return currentView;
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}
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public ImageView getPrimaryImageView() {
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return (ImageView) currentView.findViewById(R.id.pv);
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}
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@Override
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public Object instantiateItem(ViewGroup container, int position) {
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View view = LayoutInflater.from(context).inflate(R.layout.item_photoview, container, false);
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final ProgressBar pb = (ProgressBar) view.findViewById(R.id.pb);
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final PhotoView imageView = (PhotoView) view.findViewById(R.id.pv);
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ImageInfo info = this.imageInfo.get(position);
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imageView.setOnPhotoTapListener(this);
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showExcessPic(info, imageView);
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//如果需要加载的loading,需要自己改写,不能使用这个方法
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NineGridView.getImageLoader().onDisplayImage(view.getContext(), imageView, info.bigImageUrl);
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// pb.setVisibility(View.VISIBLE);
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// Glide.with(context).load(info.bigImageUrl)//
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// .placeholder(R.drawable.ic_default_image)//
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// .error(R.drawable.ic_default_image)//
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// .diskCacheStrategy(DiskCacheStrategy.ALL)//
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// .listener(new RequestListener<String, GlideDrawable>() {
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// @Override
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// public boolean onException(Exception e, String model, Target<GlideDrawable> target, boolean isFirstResource) {
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// pb.setVisibility(View.GONE);
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// return false;
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// }
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//
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// @Override
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// public boolean onResourceReady(GlideDrawable resource, String model, Target<GlideDrawable> target, boolean isFromMemoryCache, boolean isFirstResource) {
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// pb.setVisibility(View.GONE);
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// return false;
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// }
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// }).into(imageView);
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container.addView(view);
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return view;
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}
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/** 展示过度图片 */
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private void showExcessPic(ImageInfo imageInfo, PhotoView imageView) {
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//先获取大图的缓存图片
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Bitmap cacheImage = NineGridView.getImageLoader().getCacheImage(imageInfo.bigImageUrl);
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//如果大图的缓存不存在,在获取小图的缓存
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if (cacheImage == null) cacheImage = NineGridView.getImageLoader().getCacheImage(imageInfo.thumbnailUrl);
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//如果没有任何缓存,使用默认图片,否者使用缓存
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if (cacheImage == null) {
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imageView.setImageResource(R.drawable.ic_default_color);
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} else {
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imageView.setImageBitmap(cacheImage);
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}
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}
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@Override
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public void destroyItem(ViewGroup container, int position, Object object) {
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container.removeView((View) object);
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}
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/** 单击屏幕关闭 */
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@Override
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public void onPhotoTap(View view, float x, float y) {
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((ImagePreviewActivity) context).finishActivityAnim();
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}
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} |