Question 290416 in Flutter Question posted in
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Flutter – WillPopScope is deprecated

I want to exit the alert.

WillPopScope(
        onWillPop: () async {
          final shouldExit = await showDialog(
            context: context,
            builder: (context) => CupertinoAlertDialog(
              title: const Text('Exit App'),
              content: const Text('Are you sure you want to exit the app?'),
              actions: [
                CupertinoDialogAction(
                  onPressed: () => Navigator.pop(context, false),
                  child: const Text('Dismiss'),
                ),
                TextButton(
                  onPressed: () => Navigator.pop(context, true),
                  child: Text(
                    'Exit',
                    style:
                    TextStyle(color: Theme.of(context).colorScheme.error),
                  ),
                ),
              ],
            ),
          );

          return shouldExit;
        },
Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    PopScope( canPop: false, onPopInvoked: (didPop) async { debugPrint("didPop1: $didPop"); if (didPop) { return; }

          final bool? shouldPop = await showDialog(
        context: context,
        builder: (context) => CupertinoAlertDialog(
          title: const Text('Exit App'),
          content: const Text('Are you sure you want to exit the app?'),
          actions: [
            CupertinoDialogAction(
              onPressed: () => Navigator.pop(context, false),
              child: const Text('Dismiss'),
            ),
            TextButton(
              onPressed: () => Navigator.pop(context, true),
              child: Text(
                'Exit',
                style:
                TextStyle(color: Theme.of(context).colorScheme.error),
              ),
            ),
          ],
        ),
      );

      if (shouldPop ?? false) {
        SystemNavigator.pop();
      }
      debugPrint("didPop2: $didPop");
    },

  2. 0

    you can try this solution

     PopScope(
        canPop: false,
        onPopInvoked: (bool value) async {
          final shouldExit = await showDialog<bool>(
            context: context,
            builder: (context) => CupertinoAlertDialog(
              title: const Text('Exit App'),
              content: const Text('Are you sure you want to exit the app?'),
              actions: [
                CupertinoDialogAction(
                  onPressed: () => Navigator.pop(context, false),
                  child: const Text('Dismiss'),
                ),
                TextButton(
                  onPressed: () => Navigator.pop(context, true),
                  child: Text(
                    'Exit',
                    style:
                        TextStyle(color: Theme.of(context).colorScheme.error),
                  ),
                ),
              ],
            ),
          );
          if (shouldExit == true) {
            Navigator.of(context).pop();
          }
        },
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