Xamarin.iOS.app can't be transparent nor contain an alpha channel

asked 2021-11-26T07:36:38.587+00:00
KhaiFMsia 71 Reputation points

152853-image-2021-11-26-153330.png

Can somebody help me why I always got this error while uploading my app to AppStore? I tried more than 5 times already, remove shadow, remove transparent, etc, but still no luck. Any idea how to solve this?

Xamarin
Xamarin
A Microsoft open-source app platform for building Android and iOS apps with .NET and C#.
4,805 questions
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Accepted answer
  1. answered 2021-11-26T08:59:51.847+00:00
    Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 15,581 Reputation points Microsoft Employee

    Hello,

    Welcome to our Microsoft Q&A platform!

    You have to remove alpha channel when uploading a photo to App Store Connect. There is a set of photos of different sizes in AppIcon image set of Asset in iOS project, you need to check every one. The images are also in the APPIcon.appiconset folder ,each of which needs to be replaced.

    About unticking the Alpha channel, you could try to open the icon image in Preview in your Mac, select Export under File menu, uncheck Alpha at the bottom, and click Export.

    Some other drawing software can also untick the Alpha channel, you could have a try.

    About APP icon format, you could refer to
    https://learn.microsoft.com/en-us/xamarin/ios/app-fundamentals/images-icons/app-icons?tabs=macos
    https://developer.apple.com/design/human-interface-guidelines/ios/icons-and-images/app-icon/
    https://stackoverflow.com/questions/46585809/error-itms-90717-invalid-app-store-icon/46609824

    Best Regards,
    Wenyan Zhang


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