ListView lagging while scroll up/down

问题:

I don't know if the problem is in my code or in the ListView. Check out my Final(Edited) code here.

I'm working with pagination. When I reach the last page and scroll up/down the ListView the scrolling got laggy. I thought it might be happening because of this line.

    leading: CircleAvatar(backgroundImage: NetworkImage(arrayOfProducts[index]['thumbnail'] ?? "")),

NetworkImage might be taking time to load the image. Not sure but I think the lag is being caused by it. So I added new package cached_network_image and changed my code to:

    leading: CircleAvatar(child: CachedNetworkImage(
                      imageUrl: arrayOfProducts[index]['thumbnail'] ?? "",
                      placeholder: new CircularProgressIndicator(),
                      errorWidget: new Icon(Icons.error),
                    )),

But it's still laggy and previous images are now being hidden while scrolling.

回答1:

This is currently a known issue in Flutter when using images: Link to Issue.