How to enable upside down orientation on flutter for iOS?

November 17, 2021

I am trying to enable upside-down portrait mode on flutter app for ios. All orienations are enabled in the app:

SystemChrome.setPreferredOrientations([
      DeviceOrientation.portraitUp,
      DeviceOrientation.portraitDown,
      DeviceOrientation.landscapeRight,
      DeviceOrientation.landscapeLeft,
    ]);

All the orientation are also enabled on ios project settings through Xcode:

<key>UISupportedInterfaceOrientations</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
        <string>UIInterfaceOrientationPortraitUpsideDown</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
    </array>

For some reason on iOS upside-down portrait mode is not working.
Any ideas on what might be wrong is highly appreciated

>Solution :

Apple doc

All iPadOS devices support the portraitUpsideDown orientation. It’s
best practice to enable it for the iPad idiom. iOS devices without a
Home button, such as iPhone 12, don’t support this orientation. You
should disable it entirely for the iPhone idiom.

Do you test this feature on a proper ios device?