[英]how to display default image in recycler view
我在android中使用Recycler View,我的Recycler視圖包含一個ImageView和TextView,
當我從JSON響應中獲取數據時,回收器視圖僅顯示textView,直到未完全加載網絡圖像為止,我想在ImageView中顯示默認圖像(例如,可繪制文件夾中的圖像),直到網絡圖像加載為止,一旦網絡圖像加載,它將替換默認圖像,我怎么能做到這一點?...
這是我的適配器代碼:
@Override
public ViewHolderVideos onCreateViewHolder(ViewGroup parent, int viewType) {
View view = layoutInflater.inflate(R.layout.videos, parent,false);
ViewHolderVideos viewHolder = new ViewHolderVideos(view);
return viewHolder;
}
@Override
public void onBindViewHolder(final ViewHolderVideos holder, int position) {
VideoData currentVideos = listVideos.get(position);
holder.video_title.setText(currentVideos.getTitle());
String urlThumbnail = currentVideos.getUrlThumbnail();
loadImages(urlThumbnail, holder);
}
public void setClickListener(ClickListener clickListener){
this.clickListener = clickListener;
}
private void loadImages(String urlThumbnail, final ViewHolderVideos holder) {
if ((!urlThumbnail.equals(Constants.NA))){
imageLoader.get(urlThumbnail, new ImageLoader.ImageListener() {
@Override
public void onResponse(ImageLoader.ImageContainer response, boolean isImmediate){
holder.video_thumbnail.setImageBitmap(response.getBitmap());
}
@Override
public void onErrorResponse(VolleyError error) {
holder.video_thumbnail.setImageResource(R.mipmap.ic_launcher);
}
});
}
else {
holder.video_thumbnail.setImageResource(R.mipmap.ic_launcher);
}
}
如果使用排球,則可以執行以下操作:
ImageListener listener = ImageLoader.getImageListener(imageView,
R.drawable.default_image, R.drawable.failed_image);
imageLoader.get(url, listener);
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