Flutter - Loading paged JSON data into the ListView
by Brandon Donnelson youtu.be
39 min 24.8k views
In this episode, I cover building a infinite list view which loads paged data using a offset and limit. I mock a call that retrieves json and show how to update the list view. I cover these points in the video: - Fetch paged data using an offset & limit - Display loading until the data is returned - Decode JSON into a list of objects - Scrolling will fetch more paged data - Scrolling back will fetch cached data Source code: https://gist.github.com/branflake2267/dd7251ace7997622d585b4d0769c28d3 Source code fixes for Dart 2: - In this source I explicitly cast. - I change JSON.decode to new JsonCodec().decode https://gist.github.com/branflake2267/31aa8a6ce9b2f4f3956c433e3acfb60d Something I don't cover in this episode, when the cached data grows, it could reach a size detrimental to the application. With this in mind, it could easily be remedied with logic that evicts data loaded in to the cache.
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