Question 272124 in Flutter Question posted in
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What is the error alert dialog in Flutter? AlertDialog.adaptive

[enter image description here](https://i.stack.imgur.com/uTSBa.png)

I have created a Dialog Widgets. It will show the Error when i write AlertDialog.adaptive. withour adaptive Widgets No erorr. Is anyone know how to fix this error.

Is anyone know how to fix this error.

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2

Answers


  1. 0

    First of all you need to update your flutter version to 3.13 or higher version, because AlertDialog.adaptive feature came with 3.13.
    The 3.13 framework improvement – https://medium.com/@ak187429/flutter-3-13-framework-improvements-41be37e925d8.
    On the writing, the writer mentions abaout AlertDialog.adaptive.
    There is example code for AlertDialog.adaptive

    floatingActionButton: FloatingActionButton.extended(
        label: const Text('Show Alert Dialog Adaptive'),
        onPressed: () async {
          final response = await showAdaptiveDialog<bool>(
            context: context,
            builder: (context) {
              return AlertDialog.adaptive(
                content: const Text('This is an adaptive alert dialog'),
                actions: [
                  TextButton(
                    onPressed: () => Navigator.of(context).pop(false),
                    child: const Text('Cancel'),
                  ),
                  TextButton(
                    onPressed: () => Navigator.of(context).pop(true),
                    child: const Text('OK'),
                  ),
                ],
              );
            },
          );
          print(response);
        },
      ),

    My flutter version – 3.13.8,
    My dart version – 3.1.4,
    This code works on my computer 🙂

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  2. 0

    I run your Code what i Did i declare a function showDialoog here is the code
    and the result is in ScreenShot its working fine
    Result

    showDialoog(BuildContext context)async{
final endExam = await showDialog<bool>(
  context: context,
  builder: (context) {
    return AlertDialog.adaptive(
      title: const Text("Submit Exam"),
      content: Text(
        'You have time left.n'
        'Are you sure you want to submit?',
      ),
      actions: [
        TextButton(
          onPressed: () {
            Navigator.pop(context, false);
          },
          child: const Text("Cancel"),
        ),
        TextButton(
          onPressed: () {
            Navigator.pop(context, true);
          },
          child: const Text(
            "Submit",
            style: TextStyle(color: Colors.red),
          ),
        ),
      ],
    );
  },
);
}```
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