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我在我的自定義適配器類中使用異步調用來加載Listview中的圖像。但是,圖像不會顯示,直到我至少略微向上/向下滾動。請讓我知道可能是什麼原因。謝謝你的幫助。Listview不加載圖像,直到我滾動屏幕
private class LoadImage extends AsyncTask<Void, Void, Void>
{
private String fileName = null;
private ImageView imgViewToLoad = null;
LoadImage(String fileName, ImageView imgViewToLoad)
{
this.fileName = fileName;
this.imgViewToLoad = imgViewToLoad;
}
@Override
protected Void doInBackground(Void... args)
{
return null;
}
//This is executed on main UI thread
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
Utils.mImageFetcher.loadImage(fileName, imgViewToLoad);
}
}
This is in my getView()
----------------------
ViewHolderIncomingImg holderInImg = null;
if (null != convertView &&
(convertView.getTag() instanceof ViewHolderIncomingImg && !isFirstMsg))
{
holderInImg = (ViewHolderIncomingImg) convertView.getTag();
if (!multiSelectionMode)
{
if (!mSelectedItemsIds.get(position) && convertView.isActivated())
convertView.setActivated(false);
}
}
else
{
convertView = mInflater.inflate(R.layout.conv_list_item_incoming_img, parent, false);
holderInImg = new ViewHolderIncomingImg();
..............
new LoadImage(convRowItems.get(position).getMessage(), holderInImg.image).execute();
該reasen是最有可能查看回收。請張貼您的代碼,其他所有內容都會被猜出。 –
請顯示適配器的代碼。 –
確保在異步調用完成後調用適配器上的NotifyDataSetChanged方法 –