[Xamarin.Forms] Svg.Skia doesn't want to parse and display properly SVG about svg.skia HOT 6 CLOSED

Can you try using normal file (not an embedded resource) as check if it works?

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In my production case, I download a whole data from my server, so my SVG is in string property of my Model. I will try to download it, save as file and load using path.

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Ok, I have changed this sample project and currently, embedded resources are saved to device.
SKPicture is loaded via fila path and I would say that it is even worst:

• the same exception +

System.NullReferenceException: Object reference not set to an instance of an object.
at Svg.SvgDocument.Open[T] (System.String path, System.Collections.Generic.Dictionary`2[TKey,TValue] entities) [0x00035] in D:\a\1\s\externals\SVG\Source\SvgDocument.cs:304
at Svg.Skia.SKSvg.OpenSvg (System.String path) [0x00000] in D:\a\1\s\src\Svg.Skia\SKSvg.cs:127
at Svg.Skia.SKSvg.Open (System.String path) [0x00006] in D:\a\1\s\src\Svg.Skia\SKSvg.cs:156
at Svg.Skia.SKSvg.Load (System.String path) [0x00006] in D:\a\1\s\src\Svg.Skia\SKSvg.cs:181
at SvgTest.MainPage.LoadImage (SvgTest.Item item) [0x0001e] in /Users/DevGroup/Projects/SvgTest/SvgTest/MainPage.xaml.cs:143

• sometimes a Native exception appears

Tested on iOS/Android (simulator and real device)

Additionally, I have tested function SKSvg.FromSvg(string svgContent) but I have got the same issues.
It looks like the problem lives in your one dependency library - Svg

Are you able to help with this ?

SvgTest.zip

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@SeRgI1982 I have problem on my machine to run Xamarin.Forms android to debug the issues specific to android. I can not test on iOS at all.

Can you try stepping through the Svg.Skia code and find where the exception is originating?

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The same achieved on your sample

{System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeInitializationException: The type initializer for 'Svg.SvgElement' threw an exception. ---> System.PlatformNotSupportedException: Operation is not supported on this platform.
at System.Drawing.Text.FontCollection..ctor () [0x00006] in :0
at System.Drawing.Text.PrivateFontCollection..ctor () [0x00000] in :0
at Svg.SvgElement..cctor () [0x0000a] in /Users/DevGroup/Svg.Skia/externals/SVG/Source/SvgElementStyle.cs:473
--- End of inner exception stack trace ---
at Svg.SvgFragment..ctor () [0x00010] in /Users/DevGroup/Svg.Skia/externals/SVG/Source/Document Structure/SvgFragment.cs:15
at Svg.SvgDocument..ctor () [0x00007] in /Users/DevGroup/Svg.Skia/externals/SVG/Source/SvgDocument.cs:94
at (wrapper managed-to-native) System.Reflection.RuntimeConstructorInfo.InternalInvoke(System.Reflection.RuntimeConstructorInfo,object,object[],System.Exception&)
at System.Reflection.RuntimeConstructorInfo.InternalInvoke (System.Object obj, System.Object[] parameters, System.Boolean wrapExceptions) [0x00005] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/RuntimeMethodInfo.cs:936
--- End of inner exception stack trace ---
at System.Reflection.RuntimeConstructorInfo.InternalInvoke (System.Object obj, System.Object[] parameters, System.Boolean wrapExceptions) [0x00018] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/RuntimeMethodInfo.cs:944
at System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic, System.Boolean wrapExceptions) [0x00095] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/mcs/class/corlib/ReferenceSources/RuntimeType.cs:185
at System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly, System.Boolean wrapExceptions, System.Boolean skipCheckThis, System.Boolean fillCache) [0x00009] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/mcs/class/corlib/ReferenceSources/RuntimeType.cs:155
at System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Boolean wrapExceptions, System.Threading.StackCrawlMark& stackMark) [0x00027] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/rttype.cs:5770
at System.Activator.CreateInstance[T] () [0x00029] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/activator.cs:236
at Svg.SvgElementFactory.CreateElement[T] (System.Xml.XmlReader reader, System.Boolean fragmentIsDocument, Svg.SvgDocument document) [0x0003e] in /Users/DevGroup/Svg.Skia/externals/SVG/Source/SvgElementFactory.cs:93
at Svg.SvgElementFactory.CreateDocument[T] (System.Xml.XmlReader reader) [0x00035] in /Users/DevGroup/Svg.Skia/externals/SVG/Source/SvgElementFactory.cs:62
at Svg.SvgDocument.Open[T] (System.Xml.XmlReader reader) [0x000a0] in /Users/DevGroup/Svg.Skia/externals/SVG/Source/SvgDocument.cs:395 }

PrivateFontCollection constructor calls

GDIPlus.CheckStatus (GDIPlus.GdipNewPrivateFontCollection (out _nativeFontCollection));

I guess that something is wrong here.

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@SeRgI1982 Seems like issue with some missing functionality from System.Drawing on Android/iOS. trying to fix this svg-net/SVG#711

I will publish patched version of SVG with Svg.Skia that includes this fix in version 0.1.8.

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