How to replace flutter_adaptive_cards in Flutter with a maintained library for rendering Adaptive Cards?

Question

I have a Flutter project that previously used the flutter_adaptive_cards package to render Microsoft Adaptive Cards. The old code looked something like this:

final AdaptiveCard adaptiveCard = AdaptiveCard.memory(
  content: json.decode(
    attachment.content!
      .replaceAll(RegExp(r'"height"\s*:\s*"auto"'), '''"height" : null''')
      .replaceAll(RegExp(r'"width"\s*:\s*"auto"'), '''"width" : null''')
  ),
  hostConfigPath: 'lib/host_config',
  showDebugJson: false,
);

However, flutter_adaptive_cards is now outdated and is no longer maintained. I’ve tried replacing it with adaptive_card_renderer (or other newer packages), but I’m facing issues:

Some classes and methods (AdaptiveCard, .memory(), hostConfigPath) no longer exist in the new package.
I can’t find clear documentation or migration guides for converting existing code.
My app needs to dynamically render Adaptive Cards from JSON strings (coming from Microsoft Graph API messages).

Question: What is the best currently maintained Flutter package for rendering Adaptive Cards, and how can I rewrite the above flutter_adaptive_cards code to work with it? Ideally, I’d like:

Rajitha Perera · Accepted Answer · 2025-08-13 04:36:52Z

0

Answer (worked for me):

I replaced flutter_adaptive_cards with adaptive_card_renderer: ^1.0.1 and it’s been working well on Flutter 3.29 / Dart 3.7.

dependencies:
  adaptive_card_renderer: ^1.0.1

answered Aug 13 at 4:36

Rajitha Perera

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