Comments (3)
jonathanpeppers
commented on July 24, 2024
1
Hi @rachelkang, I think you need to change the $(RuntimeIdentifier) to ios-arm64 to run on a device. You could either change the .csproj file or use the -r switch at the command-line:
$ dotnet build HelloMaui -t:Run -f net6.0-ios -r ios-arm64
Let me know if that works, thanks.
The crash you get at startup, seems like a problem in Maui, to me:
Unhandled Exception:
System.NullReferenceException: Object reference not set to an instance of an object
at Microsoft.Maui.ViewExtensions.UpdateSemantics(UIView nativeView, IView view)
at Microsoft.Maui.Handlers.ViewHandler.MapSemantics(IViewHandler handler, IView view)
at Microsoft.Maui.PropertyMapper`2.<>c__DisplayClass21_0[[Microsoft.Maui.IView, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.IViewHandler, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<Add>b__0(IViewHandler r, IFrameworkElement v)
at Microsoft.Maui.PropertyMapper.UpdatePropertyCore(String key, IViewHandler viewHandler, IFrameworkElement virtualView)
at Microsoft.Maui.PropertyMapper.UpdateProperties(IViewHandler viewHandler, IFrameworkElement virtualView)
at Microsoft.Maui.Handlers.ViewHandler`2[[Microsoft.Maui.ILayout, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.LayoutView, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].SetVirtualView(IView view)
at Microsoft.Maui.Handlers.LayoutHandler.SetVirtualView(IView view)
at Microsoft.Maui.HandlerExtensions.ToNative(IView view, IMauiContext context)
at Microsoft.Maui.MauiUIApplicationDelegate`1[[HelloMaui.Startup, HelloMaui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].FinishedLaunching(UIApplication application, NSDictionary launchOptions)
--- End of stack trace from previous location ---
at UIKit.UIApplication.Main(String[] args, IntPtr principal, IntPtr delegate)
at UIKit.UIApplication.Main(String[] args, String principalClassName, String delegateClassName)
at HelloMaui.Program.Main(String[] args) in /Users/rachelkang/net6-mobile-samples/HelloMaui/iOS/Program.cs:line 12
2021-04-09 09:34:47.389328-0400 HelloMaui[25843:192553] Unhandled managed exception: Object reference not set to an instance of an object (System.NullReferenceException)
at Microsoft.Maui.ViewExtensions.UpdateSemantics(UIView nativeView, IView view)
at Microsoft.Maui.Handlers.ViewHandler.MapSemantics(IViewHandler handler, IView view)
at Microsoft.Maui.PropertyMapper`2.<>c__DisplayClass21_0[[Microsoft.Maui.IView, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.IViewHandler, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<Add>b__0(IViewHandler r, IFrameworkElement v)
at Microsoft.Maui.PropertyMapper.UpdatePropertyCore(String key, IViewHandler viewHandler, IFrameworkElement virtualView)
at Microsoft.Maui.PropertyMapper.UpdateProperties(IViewHandler viewHandler, IFrameworkElement virtualView)
at Microsoft.Maui.Handlers.ViewHandler`2[[Microsoft.Maui.ILayout, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.LayoutView, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].SetVirtualView(IView view)
at Microsoft.Maui.Handlers.LayoutHandler.SetVirtualView(IView view)
at Microsoft.Maui.HandlerExtensions.ToNative(IView view, IMauiContext context)
at Microsoft.Maui.MauiUIApplicationDelegate`1[[HelloMaui.Startup, HelloMaui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].FinishedLaunching(UIApplication application, NSDictionary launchOptions)
--- End of stack trace from previous location ---
at UIKit.UIApplication.Main(String[] args, IntPtr principal, IntPtr delegate)
at UIKit.UIApplication.Main(String[] args, String principalClassName, String delegateClassName)
at HelloMaui.Program.Main(String[] args) in /Users/rachelkang/net6-mobile-samples/HelloMaui/iOS/Program.cs:line 12
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rachelkang
commented on July 24, 2024
@jonathanpeppers thanks for the suggestion! I tried both ways, and am now seeing this build error:
Build FAILED.
3 +[DVTExtendedPlatformInfo extendedPlatformInfoForPlatformIdentifier : error : ] (in DVTFoundation) [/Users/rachelkang/net6-mobile-samples/HelloMaui/HelloMaui.csproj]
/usr/local/share/dotnet/sdk/6.0.100-preview.3.21202.5/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(876,5): error MSB3073: The command "/usr/local/share/dotnet/packs/Microsoft.iOS.Sdk/14.4.100-preview.3.1326/tools/bin/mlaunch --launchdev bin/Debug/net6.0-ios/ios-arm64/HelloMaui.app/ --stdout /dev/ttys000 --stderr /dev/ttys000 --wait-for-exit" exited with code 134. [/Users/rachelkang/net6-mobile-samples/HelloMaui/HelloMaui.csproj]
0 Warning(s)
2 Error(s)
here's the full gist: https://gist.github.com/rachelkang/9aad005729e49e600e1ebffc60abea2a
and thanks for nothing the MAUI issue - I think we've since fixed that exception, but will definitely continue to keep an eye out for it
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jonathanpeppers
commented on July 24, 2024
Do you have an Xcode 12.4? I don't think 12.5 works yet.
I normally install them side-by-side and use sudo xcode-select -s /Applications/Xcode12.4.app/ to switch between versions.
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