GestureDetector producing incorrect results when used with UiKitView on iOS 12 and 14 #66097
Description
Steps to Reproduce
- Clone my repo of minimal reproducible code
- Run on iOS (I've only tried physical devices).
- Devices I've tried:
- iPhone6 (iOS 12)
- iPhoneX (iOS 14)
- Wait for app to load (it's a black screen)
- Test out gesture detection (it will work as expected)
- Put phone in landscape orientation
- Pull down notification center (swipe it up and down 2-3 times)
- Return to app
- Test out gesture detection again (it will not work as expected. Everything becomes a
ScaleStart/ScaleEnd)
Expected results:
For gesture to be detected correctly
Actual results:
Incorrect gesture detection. Eventually all gestures become a ScaleStart/ScaleEnd
Other Info:
The offending code is simple enough to paste here (requires setting up a PlatformView which I've done for you in my repo):
class MyHomePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: () => print("onTap"),
onDoubleTap: () => print("onDoubleTap"),
onScaleStart: (_) => print("onScaleStart"),
onScaleEnd: (_) => print("onScaleEnd"),
child: UiKitView(viewType: "dummyView", onPlatformViewCreated: (int i) => print("UiKitView dummyView created"))
);
}
}
Logs
# Shows nothing useful, and makes my post too long for github to accept. Omitting.
Analyzing gesturebug...
No issues found! (ran in 1.7s)
[✓] Flutter (Channel stable, 1.20.4, on Mac OS X 10.15.6 19G2021, locale en-US)
• Flutter version 1.20.4 at /Users/jose/projects/flutter
• Framework revision fba99f6cf9 (3 days ago), 2020-09-14 15:32:52 -0700
• Engine revision d1bc06f032
• Dart version 2.9.2
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
• Android SDK at /Users/jose/Library/Android/sdk
• Platform android-29, build-tools 29.0.3
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 12.0)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.0, Build version 12A7209
• CocoaPods version 1.9.3
[✓] Android Studio (version 4.0)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 48.0.2
• Dart plugin version 193.7361
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)