Support for new Beta versions of iOS. iOS17 beta for example

[JawadJaber]

We have noticed that Apple have opened Beta versions for much more users.
As a result, some of our MAUI customers are upgrading their iOS devices to beta version and when they try to open the app, it crashes suddenly. What can we do to prevent this? and how long it would take to support any other Beta version coming in the future?

[molina34]

i need a solution to run MAui on ios 17... Apple is failing app validation because the app does not open on ios17

error on VS

[molina34]

@JawadJaber, any update?
@Redth

[alexdick86]

Is there any solution for Xamarin or Maui on iOS 17 ?

[Coboholic]

Given the timing of this thread the crash appeared with the "1st developer beta" (early June) and we can confirm still seeing it with the "3rd developer beta update" a month later (late July).

See also #16316

[Redth]

Why this happens

In Xcode 15.x and iOS 17, Apple has removed the NewsstandKit framework from the SDK entirely. When building MAUI or .NET apps with Xcode 14.x support, your app may be linking in this framework, especially in Debug mode, but possibly in Release mode too. If it does so, and you try to run the app on iOS17, it will crash with the error articulated in this discussion.

Workaround

To work around this issue for now, you can set the following project properties in your iOS / MacCatalyst .NET/MAUI app project:

<PropertyGroup>
  <MtouchLink>SdkOnly</MtouchLink>
  <MtouchExtraArgs>$(MtouchExtraArgs) --weak-framework=NewsstandKit</MtouchExtraArgs>
</PropertyGroup>

This should cause the NewsstandKit framework (if you are not actually using it in your app) to be linked out / removed so that the app can continue to run on iOS 17.

Note: This may increase your Debug build times.

[rolfbjarne]

@EvgenyMuryshkin do you have MtouchLink=SdkOnly set in your csproj? If so, can you get a binlog that shows the build failure?

[EvgenyMuryshkin]

Please have a look.
There is a call to Xcode 14.3 during the build - is it supposed to be like this?

History of updates on MAC:
Initial state - Ventura, Xcode 14.3 manually installed, Visual Studio 17.6.4, build and run fine on device, simulator, and app store

Update to Sonoma, Xcode does not run
Update VS to 17.6.6, does not build
Delete Xcode 14.3, and install Xcode 15 from the app store.

Current state - Sonoma, Xcode 15 from the app store, Visual Studio 17.6.6, all broken

SupplyLite.iOS_Debug_iPhoneSimulator_Build_2023-10-26T23_36_25.5341390Z.binlog.zip

[rolfbjarne]

@EvgenyMuryshkin remove this from your csproj:

<MtouchExtraArgs>--weak-framework=NewsstandKit.framework/NewsstandKit</MtouchExtraArgs>

and your project should build again. If not, please attach an updated binlog.

[EvgenyMuryshkin]

OK, that works, thank you.

So only need to add SdkOnly?

[rolfbjarne]

@EvgenyMuryshkin you're doing MtouchLink=SdkOnly already in your csproj, so no need to change anything else.

[joru1407]

For us the above workaround isn't working. Is there anything special beside the MAUI project setting? We added this one but the App ist still closing on startup with iOS 17 but working on iOS 16.

[markkellaway]

It's worth mentioning we are of course currently working on adding Xcode 15.x support into the product and will release support as soon as we are ready.
Is there any update on the timing of this support?

[Coboholic]

PSA - Update from JIRA land - a fix made 2 or 3 weeks ago will be available in an update after the recently released .NET 7.0.307.

[RobSchoenaker]

Can you elaborate on what this means?

[SamiAlan]

The workaround mention by @Redth is not working for me. I've added the following and it is still crashing on the physical device:

<PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net7.0-ios|AnyCPU'"> <MtouchLink>SdkOnly</MtouchLink> <AdditionalArgs>--weak-framework=NewsstandKit</AdditionalArgs> </PropertyGroup>

[rolfbjarne]

Please have a look at this: dotnet/macios#18964

[NebulaSleuth]

The work around fixes the issue, but I also have to disable XAML Hot Reload otherwise the app crashed when launching the debugger:

Resolved pending breakpoint for 'Xamarin.HotReload.HotReloadAgent.BreakpointSendToIde(System.String)' to D:\a\_work\1\s\HotReload\Source\Xamarin.HotReload.Agent\HotReloadAgent.cs:423 [0x00000]. 2023-09-27 12:23:48.707 XtremeBarBingo[672:24023] warning: Could not load signature of Xamarin.HotReload.Telemetry.ITelemetryService:Post due to: Could not resolve type with token 01000018 from typeref (expected class 'System.ValueTuple2' in assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51') assembly:netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51 type:System.ValueTuple`2 member:(null)

2023-09-27 12:23:48.703 XtremeBarBingo[672:24023] warning: Could not load signature of Xamarin.HotReload.AgentTelemetryService:Post due to: Could not resolve type with token 01000049 from typeref (expected class 'System.ValueTuple2' in assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51') assembly:netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51 type:System.ValueTuple2 member:(null)

Thread started: #3
2023-09-27 12:23:48.813 XtremeBarBingo[672:24023] You've implemented -[ application:didReceiveRemoteNotification:fetchCompletionHandler:], but you still need to add "remote-notification" to the list of your supported UIBackgroundModes in your Info.plist.

2023-09-27 12:23:48.960 XtremeBarBingo[672:24023] warning: Can't find custom attr constructor image: data-0x10b038000 mtoken: 0x0a000005 due to: Could not load file or assembly 'Xamarin.HotReload.Contracts, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.

2023-09-27 12:23:48.960 XtremeBarBingo[672:24023] warning: Can't find custom attr constructor image: data-0x10b09c000 mtoken: 0x0a00000d due to: Could not resolve type with token 0100000e from typeref (expected class 'System.Resources.UltimateResourceFallbackLocation' in assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51') assembly:netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51 type:System.Resources.UltimateResourceFallbackLocation member:(null)

Thread started: #4
Thread started: .NET ThreadPool Gate #5
Thread started: #6
Thread started: #7
load file or assembly 'Xamarin.HotReload.Contracts, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.
2023-09-27 12:23:49.751 XtremeBarBingo[672:24023] warning: Can't find custom attr constructor image: data-0x10b09c000 mtoken: 0x0a00000d due to: Could not resolve type with token 0100000e from typeref (expected class 'System.Resources.UltimateResourceFallbackLocation' in assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51') assembly:netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51 type:System.Resources.UltimateResourceFallbackLocation member:(null)

2023-09-27 12:23:49.751 XtremeBarBingo[672:24023] warning: Can't find custom attr constructor image: data-0x10b038000 mtoken: 0x0a000005 due to: Could not load file or assembly 'Xamarin.HotReload.Contracts, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.
2023-09-27 12:23:49.751 XtremeBarBingo[672:24023] warning: Can't find custom attr constructor image: data-0x10b038000 mtoken: 0x0a000005 due to: Could not load file or assembly 'Xamarin.HotReload.Contracts, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.
2023-09-27 12:23:49.751 XtremeBarBingo[672:24023] warning: Can't find custom attr constructor image: data-0x10b038000 mtoken: 0x0a000005 due to: Could not load file or assembly 'Xamarin.HotReload.Contracts, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.
2023-09-27 12:23:49.751 XtremeBarBingo[672:24023] warning: Can't find custom attr constructor image: data-0x10b038000 mtoken: 0x0a000005 due to: Could not
System.TypeLoadException: 'Loading...'`