[Bug] Android Embedded Ttf resource throwing exception

[EmilAlipiev]

Description

I am using Roboto-Regular ttf as embedded in my xamarin.forms app. Everything works fine for me and i cannot reproduce any error but for some users i am seeing this crash in my Appcenter logs. I have edded is embedded resource and defined in app.xaml.cs as [assembly: ExportFont("Roboto-Regular.ttf", Alias = "FontRegular")]

What could be the problem here? any idea?

Xamarin Exception Stack:
Java.Lang.RuntimeException: Font asset not found /data/user/0/com.mycompany.myapp/cache/Roboto-Regular.ttf
  at Java.Interop.JniEnvironment+StaticMethods.CallStaticObjectMethod (Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x0006e] in <98256a5ebcdb4f019a0bacb554da830a>:0
  at Java.Interop.JniPeerMembers+JniStaticMethods.InvokeObjectMethod (System.String encodedMember, Java.Interop.JniArgumentValue* parameters) <0x73558157a8 + 0x00063> in <98256a5ebcdb4f019a0bacb554da830a>:0
  at Android.Graphics.Typeface.CreateFromFile (System.String path) [0x00029] in <0861bd84e5884e54a92d3bd4b8a806f3>:0
  at Xamarin.Forms.Platform.Android.FontExtensions.TryGetFromAssets (System.String fontName) [0x00016] in <6dceb1a49ccb49119610c59f51320500>:0
  at Xamarin.Forms.Platform.Android.FontExtensions.ToTypeFace (System.String fontfamily, Xamarin.Forms.FontAttributes attr) [0x0000c] in <6dceb1a49ccb49119610c59f51320500>:0
  at Xamarin.Forms.Platform.Android.FontExtensions.CreateTypeface (System.Tuple`2[T1,T2] key) [0x0004b] in <6dceb1a49ccb49119610c59f51320500>:0
  at System.Collections.Concurrent.ConcurrentDictionary`2[TKey,TValue].GetOrAdd (TKey key, System.Func`2[T,TResult] valueFactory) <0x7357330724 + 0x000a7> in <e80227fc9dc44eee8ab9c169425ebeb6>:0
  at Xamarin.Forms.Platform.Android.FontExtensions.ToTypeface (System.String fontFamily, Xamarin.Forms.FontAttributes fontAttributes) [0x00018] in <6dceb1a49ccb49119610c59f51320500>:0
  at Xamarin.Forms.Platform.Android.FontExtensions.ToTypeface (Xamarin.Forms.Font self) <0x7354b60c10 + 0x0006b> in <6dceb1a49ccb49119610c59f51320500>:0
  at Xamarin.Forms.Platform.Android.FormattedStringExtensions+FontSpan.Apply (Android.Graphics.Paint paint) <0x7354b61424 + 0x00047> in <6dceb1a49ccb49119610c59f51320500>:0
  at Xamarin.Forms.Platform.Android.FormattedStringExtensions+FontSpan.UpdateDrawState (Android.Text.TextPaint tp) <0x7354b6139c + 0x0002f> in <6dceb1a49ccb49119610c59f51320500>:0
  at Android.Text.Style.CharacterStyle.n_UpdateDrawState_Landroid_text_TextPaint_ (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_tp) [0x0000f] in <0861bd84e5884e54a92d3bd4b8a806f3>:0
  at (wrapper dynamic-method) Android.Runtime.DynamicMethodNameCounter.123(intptr,intptr,intptr)
  at java.lang.RuntimeException: Font asset not found /data/user/0/com.mycompany.myapp/cache/Roboto-Regular.ttf
  at android.graphics.Typeface.createFromFile(Typeface.java:1039)
  at android.graphics.Typeface.createFromFile(Typeface.java:1053)
  at crc643f46942d9dd1fff9.FormattedStringExtensions_FontSpan.n_updateDrawState(Native Method)
  at crc643f46942d9dd1fff9.FormattedStringExtensions_FontSpan.updateDrawState(Unknown Source:0)
  at android.text.TextLine.handleRun(TextLine.java:1153)
  at android.text.TextLine.measureRun(TextLine.java:510)
  at android.text.TextLine.measure(TextLine.java:378)
  at android.text.TextLine.metrics(TextLine.java:306)
  at android.text.BoringLayout.isBoring(BoringLayout.java:366)
  at android.widget.TextView.onMeasure(TextView.java:9559)
  at android.view.View.measure(View.java:25169)
  at mono.java.lang.RunnableImplementor.n_run(Native Method)
  at mono.java.lang.RunnableImplementor.run(Unknown Source:0)
  at android.os.Handler.handleCallback(Handler.java:883)
  at android.os.Handler.dispatchMessage(Handler.java:100)
  at android.os.Looper.loop(Looper.java:214)
  at android.app.ActivityThread.main(ActivityThread.java:7615)
  at java.lang.reflect.Method.invoke(Native Method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)

Basic Information

• Version with issue:
• Last known good version:
• Platform Target Frameworks:
  • Android: 10
• NuGet Packages: XF 4.8.0.1687
• Affected Devices:
  Android Build: QKQ1.200308.002
  Manufacturer: LGE
  Model: LM-Q720

[StephaneDelcroix]

at the very minimum, Xamarin.Forms.Platform.Android.FontExtensions.TryGetFromAssets shouldn't throw

[StephaneDelcroix]

anything special with the language/culture of those affected users ?

[Redth]

Since we haven't heard from you in more than 30 days, we hope this issue is no longer affecting you. If it is, please reopen this issue and provide the requested information so that we can look into it further. Thank you!