Running Xamarin Forms iOS gave me a black screen

Question

Running Xamarin Forms iOS gave me a black screen

Wei Wen 1,096

I had this problem since later yesterday (06/18/2021). At first I thought this may be related to my changes to the code. So I reverted back to where I knew it should work, and still I had this black screen. I did some search and tried all I could (updating Visual Studio, removing obj and bin folders, cleaning and rebuilding) and this problem still persists. Anyone has an idea what could be causing the black screen?

Answer 1

JessieZhang-MSFT 7,526

Hello,

Welcome to our Microsoft Q&A platform!

You can first check if you have upgraded everything to the latest (VS for mac , VS for windows , XCode ).

If the problem persists,you can try the following methods:

Restart PC and visual studio .
Delete bin and obj folder on windows side.
Reconnect mac agent .
Clean and rebuild .
Change simulator(iPhone X e,g)
Disable remote simulator to Windows (Tools - Options - Xamarin - iOS Settings)

If problem persists , attach your build log here (Help - Xamarin - Open Logs).

Best Regards,

Jessie Zhang

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Wei Wen 1,096 Reputation points

2021-06-21T12:59:34.97+00:00

@JessieZhang-MSFT I used Mac, not Windows. But I followed similar procedures, and the problem still persists. I couldn't find Help - Xamarin -Open Logs on Visual Studio Mac. How can I attach build log on the Mac version of Visual Studio?
Wei Wen 1,096 Reputation points

2021-06-21T13:09:28.12+00:00

107639-ide2021-06-21-08-52-50.log 107640-hotreload2021-06-21-08-52-50.log
Wei Wen 1,096 Reputation points

2021-06-22T02:09:59.337+00:00

@JessieZhang-MSFT It turned out that info.plist file was inadvertently and erroneously modified which caused the black screen. Now that info.plist is changed back, the issue is solved.
JessieZhang-MSFT 7,526 Reputation points

2021-06-22T02:44:21.937+00:00

Congrats and thanks for your support for xamarin. Have a nice day. :)
Myint Kyaw 1 Reputation point

2021-06-22T13:05:01.6+00:00

Hi WeiWen-3421,

II am having the same issue. May i know which configuration did you change in infor.plist, please? Thanks.
Wei Wen 1,096 Reputation points

2021-06-23T03:05:01.343+00:00
@Myint Kyaw Somehow this was added in my info.plist. Once I have it removed, the black screen issue is gone:

<key>UIApplicationSceneManifest</key>
<dict>
<key>UIApplicationSupportsMultipleScenes</key>
<true/>
</dict>
Ablah Nazeerah 1 Reputation point

2021-07-27T23:32:10.513+00:00

I did the same and removed the same xml UIApplicationSceneManifest from info.plist and the black screen is now gone. THanks
Joanne Raye 1 Reputation point

2021-12-04T22:26:01.923+00:00

I have been working on a problem for a week where my iOS app would crash for no reason. Your answer (info.plist section) finally saved me. I don't know how it got changed or why it fixed it, but it did. THANK YOU.

Running Xamarin Forms iOS gave me a black screen

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