Animation during orientation change is wrong

[dkwingsmt]

Expected:

trim.9CAFF5B0-BB87-4FEA-BD8F-104D74C46746.MOV

Actual:

trim.336CE501-AEA4-48AD-AD79-40BBA0C869B0.MOV

Reproduction:

import 'package:flutter/cupertino.dart';

void main() => runApp(const App());

class App extends StatelessWidget {
  const App({super.key});

  @override
  Widget build(BuildContext context) {
    return CupertinoApp(
      home: Center(
        child: Builder(builder: (BuildContext context) {
            return CupertinoButton(
              onPressed: () {
                showCupertinoDialog<void>(
                  context: context,
                  builder: (BuildContext context) => CupertinoAlertDialog(
                    title: const Text('The title'),
                    actions: <Widget>[
                      CupertinoDialogAction(
                        child: const Text('One'),
                        onPressed: () {
                          Navigator.pop(context);
                        },
                      ),
                      CupertinoDialogAction(
                        child: const Text('Two'),
                        onPressed: () {
                          Navigator.pop(context);
                        },
                      ),
                    ],
                  ),
                );
              },
              child: const Text('Flutter'),
            );
          }),
      ),
    );
  }
}

Running e9b4a6a on a iPhone 16 Pro.

[darshankawar]

Thanks for the report. I was able to replicate the reported behavior on latest sdk versions using iPhone 15 as well.

stable : 3.29.3
master : 3.32.0-1.0.pre.375

[dkwingsmt]

I found that this was heavily discussed in #16322. This issue was closed by flutter/engine#40730, which improved this problem from "super bad" to "ok-ish bad" as the current state.

An ideal state in my opinion should use no distortion at all, because any distortion is extremely noticeable. Some extent of cropping is probably needed. My rough proposal is to add a new method to the framework and allow each widget customize their in-rotation transition.

Possible resource:

• https://www.kodeco.com/books/ios-animations-by-tutorials/v6.0/chapters/19-presentation-controller-orientation-animations