app crashes with latest SkiaSharp version

[Th3L0x]

Describe the bug
The app crashes with error:

Could not load type of field 'LiveChartsCore.SkiaSharpView.Painting.ImageFilters.DropShadow:_cropRect' (6) due to: Could not resolve type with token 010000cf from typeref (expected class 'CropRect' in assembly '') assembly: type:CropRect member:(null)

with this livechart version:
<PackageReference Include="LiveChartsCore.SkiaSharpView.Maui" Version="2.0.0-beta.710" />

update these packages to:

<PackageReference Include="SkiaSharp.Views.Maui.Controls" Version="3.116.0" />
<PackageReference Include="SkiaSharp.Views.Maui.Core" Version="3.116.0" />

the error occures

revert these packages back to:

<PackageReference Include="SkiaSharp.Views.Maui.Controls" Version="2.88.9" />
<PackageReference Include="SkiaSharp.Views.Maui.Core" Version="2.88.9" />

its working again

To Reproduce
Place a polarchart in page, even an empty one like:
<lvc:PolarChart HeightRequest="100" WidthRequest="100" />

Expected behavior
Shows the polarchart without crash

Screenshots
If applicable, add screenshots to help explain your problem.

Smartphone (please complete the following information):

• Device:
• OS: Android

[cloudhal]

Yes it does, what's the plan for supporting 3.x version of Skiasharp?

[beto-rodriguez]

The latest version of LiveCharts is compatible with SkiaSharp 3, it's impossible to make 2.0.0-beta.710 work, SkiaSharp 3 did not even existed when that version was released.

[cloudhal]

Thanks @beto-rodriguez , but if you install LiveChartsCore.SkiasharpView.Blazor, it installs SkiaSharp 2.8.8.9-preview.2.2 as a transitive package, upgrading to the latest 3.x versions of SkiSharp breaks it.

[Th3L0x]

Same with LiveChartsCore.SkiaSharpView.Maui.

So which version and package should I use in MAUI if I want to update these:

<PackageReference Include="SkiaSharp.Views.Maui.Controls" Version="2.88.9" />
<PackageReference Include="SkiaSharp.Views.Maui.Core" Version="2.88.9" />

to these:

<PackageReference Include="SkiaSharp.Views.Maui.Controls" Version="3.116.0" />
<PackageReference Include="SkiaSharp.Views.Maui.Core" Version="3.116.0" />

Because if I use this package
<PackageReference Include="LiveChartsCore.SkiaSharpView.Maui" Version="2.0.0-beta.710" />
with these:

<PackageReference Include="SkiaSharp.Views.Maui.Controls" Version="3.116.0" />
<PackageReference Include="SkiaSharp.Views.Maui.Core" Version="3.116.0" />

then I get this error:
Could not load type of field 'LiveChartsCore.SkiaSharpView.Painting.ImageFilters.DropShadow:_cropRect' (6) due to: Could not resolve type with token 010000cf from typeref (expected class 'CropRect' in assembly '') assembly: type:CropRect member:(null)

[beto-rodriguez]

@cloudhal For Blazor please wait for rc-5 it should be available in a couple of days at NuGet

@Th3L0x try rc-4.5

[Th3L0x]

Thank you rc-4.5 solved my issue!

[beto-rodriguez]

This is now supported on the latest version of the library, thanks for the report.

[cloudhal]

Unfortunately it doesn't render now after upgrade:
System.NullReferenceException: Object reference not set to an instance of an object.
at SkiaSharp.Views.Blazor.SKGLView.Dispose()

[Th3L0x]

I taked a closer look throughout. on 2.0.0-rc4.5

If I navigate from a page (with await Shell.Current.GoToAsync("..", animate: true)) that contains any chart I get this exception:

System.Exception: 'Unable to cast to ContentViewGroup'

[MIUIScout App] Enter APP_SCOUT_WARNING State
[MIUIScout App] (Current message: duration=2503ms seq=3776 late=12ms h=android.os.Handler c=mono.java.lang.RunnableImplementor)
[AppScoutStateMachine] dump trace dirName = 2025-01-16-11-43-27-7936-APP_SCOUT_WARNING-com.Tets.Test
[MIUIScout App] Event:APP_SCOUT_WARNING Thread:main backtrace:
[MIUIScout App] at mono.java.lang.RunnableImplementor.n_run(Native Method)
[MIUIScout App] at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:29)
[MIUIScout App] at android.os.Handler.handleCallback(Handler.java:958)
[MIUIScout App] at android.os.Handler.dispatchMessage(Handler.java:99)
[MIUIScout App] at android.os.Looper.loopOnce(Looper.java:222)
[MIUIScout App] at android.os.Looper.loop(Looper.java:314)
[MIUIScout App] at android.app.ActivityThread.main(ActivityThread.java:8680)
[MIUIScout App] at java.lang.reflect.Method.invoke(Native Method)
[MIUIScout App] at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:565)
[MIUIScout App] at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
[MIUIScout App] Enter APP_SCOUT_HANG state
[MIUIScout App] (Current message: duration=5005ms seq=3776 late=12ms h=android.os.Handler c=mono.java.lang.RunnableImplementor)
[AppScoutStateMachine] dump trace dirName = 2025-01-16-11-43-30-7936-APP_SCOUT_HANG-com.Test.Test
[MIUIScout App] Event:APP_SCOUT_HANG Thread:main backtrace:
[MIUIScout App] at mono.java.lang.RunnableImplementor.n_run(Native Method)
[MIUIScout App] at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:29)
[MIUIScout App] at android.os.Handler.handleCallback(Handler.java:958)
[MIUIScout App] at android.os.Handler.dispatchMessage(Handler.java:99)
[MIUIScout App] at android.os.Looper.loopOnce(Looper.java:222)
[MIUIScout App] at android.os.Looper.loop(Looper.java:314)
[MIUIScout App] at android.app.ActivityThread.main(ActivityThread.java:8680)
[MIUIScout App] at java.lang.reflect.Method.invoke(Native Method)
[MIUIScout App] at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:565)
[MIUIScout App] at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
[MIUIScout ANR] get period history msg: (Current message: duration=5801ms seq=3776 late=12ms h=android.os.Handler c=mono.java.lang.RunnableImplementor)
[MIUIScout ANR] get period history msg:messages for the same target android.view.Choreographer$FrameHandler execute time>50ms (count=181 totalwalltime=1052ms h=android.view.Choreographer$FrameHandler