@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
if (scrollState == SCROLL_STATE_IDLE) {
mImageLoader.loadImages(mStart, mEnd);
} else {
mImageLoader.cancelAllTasks();
}
}
public MyAdapterUseDoubleCaches(Context context, List<String> data, ListView listView) {
this.mData = data;
mInflater = LayoutInflater.from(context);
mImageLoader = new ImageLoaderWithDoubleCaches(context, listView);
mImageLoader.loadImages(mStart, mEnd);
listView.setOnScrollListener(this);
}
@Override
public void onScroll(
AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
mStart = firstVisibleItem;
mEnd = firstVisibleItem + visibleItemCount;
if (mFirstFlag && visibleItemCount > 0) {
mImageLoader.loadImages(mStart, mEnd);
mFirstFlag = false;
}
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
String url = mData.get(position);
ViewHolder viewHolder = null;
if (convertView == null) {
viewHolder = new ViewHolder();
convertView = mInflater.inflate(R.layout.listview_item, null);
viewHolder.imageView = (ImageView) convertView.findViewById(R.id.iv_lv_item);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.imageView.setTag(url);
viewHolder.imageView.setImageResource(R.drawable.ic_launcher);
mImageLoader.showImage(url, viewHolder.imageView);
return convertView;
}
public void flushCache() {
mImageLoader.flushCache();
}
