iOS App screen size problems after upgrading to .net8.0

No_Focus 25

I have noted that after an upgrade to .net8.0 that my iOS app has a size issue. This persists even after returning to .net7.0 and gets resolved after reverting code before the upgrade.

After some digging myself i have noted that some files are not being generated anymore inside obj/{net version}-ios/{RuntimeIdentifier}/resizetizer, i am missing the f and sp folders.

My question is if this is a known bug on the iOS side and if the missing files have something to do with the problem i am having.

Image of problem:

User's image

before upgrade:

User's image

No_Focus 25 Reputation points

2023-11-23T21:58:11.37+00:00

i have found the source of the issue, it has something to do with MauiSplashScreen and Resizer. after making changes to the SplashScreen it went back to full screen but now does not show image inside the screen.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 34,556 Reputation points Microsoft Vendor

2023-11-24T05:46:29.7466667+00:00
From the first screenshot, it looks like the splash screen is missing, have you set the MauiImages and MauiSplashScreen in the csproj?

For further investigation and help, could you provide the following information?

What's the Xcode version? What's the VS version?

How did you set the splash screen?

Could you describe the detailed reproduceable steps so that I can test?

after making changes to the SplashScreen it went back to full screen but now does not show image inside the screen.

All images are not shown in the screen, right? Have you set up multiple MauiSplashScreen in csproj? Could you describe more about the current behavior?
No_Focus 25 Reputation points

2023-11-28T08:16:22.7566667+00:00

[deleted]
No_Focus 25 Reputation points

2023-11-28T08:30:37.34+00:00
I have got good news, i have fixed the problem by replacing the image because it was broken.

I do however got another problem that i have had for a longtime, when i add an image that is rather large the app does not Resize it to the correct size. This happends so far i know only on Splashscreen on iOS.

Could you help me with resolving this issue?

Here i have the following information that you have asked:

VS 17.8.1 Enterprise

XCode 15.0.1

Current .Net7 because of ToolBar issue i have inside .net8

How i set Splashscreen:

How i would recreate is by:

Adding PNG image with size of 512x512 into Resource folder

Include Image just like the image above

Build and run App inside Simulator on iOS 17.0

I am looking forward to you response.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 34,556 Reputation points Microsoft Vendor

2023-11-28T09:32:29.1466667+00:00

I noticed that the image type is png, could you test with a SVG image as described in the official splash screen doc?
No_Focus 25 Reputation points

2023-11-28T11:09:13.9366667+00:00

I have tested it with SVG image and sadly it gives me nearly the same result as with PNG. I have tried it with and without basesize and/or Resize true.

image of the result:
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 34,556 Reputation points Microsoft Vendor

2023-11-30T09:45:12.19+00:00

I cannot reproduce your issue for now (If I add another image as the splash image, the screen always will be blank). And there is a duplicate thread at SO saying the size cannot be changed, and you could refer to the solution. For this, please report it at MAUI GitHub repo and attach the issue link here, thanks for your collaboration.
No_Focus 25 Reputation points

2023-12-01T10:51:08.3533333+00:00

thanks your help, i have tried to recreate it as well but did not succeed. i think that the best solution might be to create new project and move everything to that.

if i find a better solution i will pin it in here for others that might have the same problem.

1 answer

No_Focus 25 Reputation points

2023-12-01T13:22:50.6633333+00:00

After some digging, testing and thinking i have found the cause of the problem.

It has to do with a restored package inside my app: <PackageReference Include="PCLCrypto" Version="2.0.147" />. This made use of a differed target framework which likely resulted in these problems.

So for me the action is to find a alternative to this package/code that does not conflict with the targeted framework.

Screenshot of the restored packages:
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1 person found this answer helpful.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 34,556 Reputation points Microsoft Vendor

2023-12-04T03:05:42.0633333+00:00

Glad you solved the problem, thanks for your sharing.
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iOS App screen size problems after upgrading to .net8.0

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