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[Bug] [Android] Intermittent error in production: Font not found /data/user/0/com.package.whatever/cache/font.ttf #15012

Open greg84 opened 2 years ago

greg84 commented 2 years ago

Description

This exception is being reported intermittently, where the application seems to be unable to find the font file in the cache folder.

Error message:

Font not found /data/user/0/com.package.whatever/cache/font.ttf

Stack trace ``` JniEnvironment+StaticMethods.CallStaticObjectMethod (Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) JniPeerMembers+JniStaticMethods.InvokeObjectMethod (System.String encodedMember, Java.Interop.JniArgumentValue* parameters) Typeface.CreateFromFile (System.String path) FontExtensions.TryGetFromAssets (System.String fontName) FontExtensions.ToTypeFace (System.String fontfamily, Xamarin.Forms.FontAttributes attr) FontExtensions.CreateTypeface (System.Tuple`2[T1,T2] key) ConcurrentDictionary`2[TKey,TValue].GetOrAdd (TKey key, System.Func`2[T,TResult] valueFactory) FontExtensions.ToTypeface (System.String fontFamily, Xamarin.Forms.FontAttributes fontAttributes) FontExtensions.ToTypeface (Xamarin.Forms.Font self) LabelRenderer.UpdateFont () LabelRenderer.UpdateText () LabelRenderer.OnElementChanged (Xamarin.Forms.Platform.Android.ElementChangedEventArgs`1[TElement] e) LabelRenderer.set_Element (Xamarin.Forms.Label value) IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) Platform.CreateRenderer (Xamarin.Forms.VisualElement element, Android.Content.Context context) VisualElementPackager.AddChild (Xamarin.Forms.VisualElement view, Xamarin.Forms.Platform.Android.IVisualElementRenderer oldRenderer, Xamarin.Forms.Platform.Android.RendererPool pool, System.Boolean sameChildren) VisualElementPackager.SetElement (Xamarin.Forms.VisualElement oldElement, Xamarin.Forms.VisualElement newElement) VisualElementPackager.Load () VisualElementRenderer`1[TElement].SetPackager (Xamarin.Forms.Platform.Android.VisualElementPackager packager) VisualElementRenderer`1[TElement].SetElement (TElement element) IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) Platform.CreateRenderer (Xamarin.Forms.VisualElement element, Android.Content.Context context) VisualElementPackager.AddChild (Xamarin.Forms.VisualElement view, Xamarin.Forms.Platform.Android.IVisualElementRenderer oldRenderer, Xamarin.Forms.Platform.Android.RendererPool pool, System.Boolean sameChildren) VisualElementPackager.SetElement (Xamarin.Forms.VisualElement oldElement, Xamarin.Forms.VisualElement newElement) VisualElementPackager.Load () VisualElementRenderer`1[TElement].SetPackager (Xamarin.Forms.Platform.Android.VisualElementPackager packager) VisualElementRenderer`1[TElement].SetElement (TElement element) IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) Platform.CreateRenderer (Xamarin.Forms.VisualElement element, Android.Content.Context context) VisualElementPackager.AddChild (Xamarin.Forms.VisualElement view, Xamarin.Forms.Platform.Android.IVisualElementRenderer oldRenderer, Xamarin.Forms.Platform.Android.RendererPool pool, System.Boolean sameChildren) VisualElementPackager.SetElement (Xamarin.Forms.VisualElement oldElement, Xamarin.Forms.VisualElement newElement) VisualElementPackager.Load () VisualElementRenderer`1[TElement].SetPackager (Xamarin.Forms.Platform.Android.VisualElementPackager packager) VisualElementRenderer`1[TElement].SetElement (TElement element) IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) Platform.CreateRenderer (Xamarin.Forms.VisualElement element, Android.Content.Context context) VisualElementPackager.AddChild (Xamarin.Forms.VisualElement view, Xamarin.Forms.Platform.Android.IVisualElementRenderer oldRenderer, Xamarin.Forms.Platform.Android.RendererPool pool, System.Boolean sameChildren) VisualElementPackager.SetElement (Xamarin.Forms.VisualElement oldElement, Xamarin.Forms.VisualElement newElement) VisualElementPackager.Load () FrameRenderer.OnElementChanged (Xamarin.Forms.Platform.Android.ElementChangedEventArgs`1[TElement] e) FrameRenderer.set_Element (Xamarin.Forms.Frame value) IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) Platform.CreateRenderer (Xamarin.Forms.VisualElement element, Android.Content.Context context) VisualElementPackager.AddChild (Xamarin.Forms.VisualElement view, Xamarin.Forms.Platform.Android.IVisualElementRenderer oldRenderer, Xamarin.Forms.Platform.Android.RendererPool pool, System.Boolean sameChildren) VisualElementPackager.SetElement (Xamarin.Forms.VisualElement oldElement, Xamarin.Forms.VisualElement newElement) VisualElementPackager.Load () VisualElementRenderer`1[TElement].SetPackager (Xamarin.Forms.Platform.Android.VisualElementPackager packager) VisualElementRenderer`1[TElement].SetElement (TElement element) IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) Platform.CreateRenderer (Xamarin.Forms.VisualElement element, Android.Content.Context context) VisualElementPackager.AddChild (Xamarin.Forms.VisualElement view, Xamarin.Forms.Platform.Android.IVisualElementRenderer oldRenderer, Xamarin.Forms.Platform.Android.RendererPool pool, System.Boolean sameChildren) VisualElementPackager.SetElement (Xamarin.Forms.VisualElement oldElement, Xamarin.Forms.VisualElement newElement) VisualElementPackager.Load () VisualElementRenderer`1[TElement].SetPackager (Xamarin.Forms.Platform.Android.VisualElementPackager packager) VisualElementRenderer`1[TElement].SetElement (TElement element) IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) Platform.CreateRenderer (Xamarin.Forms.VisualElement element, Android.Content.Context context) ShellContentFragment.OnCreateView (Android.Views.LayoutInflater inflater, Android.Views.ViewGroup container, Android.OS.Bundle savedInstanceState) Fragment.n_OnCreateView_Landroid_view_LayoutInflater_Landroid_view_ViewGroup_Landroid_os_Bundle_ (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_inflater, System.IntPtr native_container, System.IntPtr native_savedInstanceState) (wrapper dynamic-method) Android.Runtime.DynamicMethodNameCounter.51(intptr,intptr,intptr,intptr,intptr) java.lang.RuntimeException: Font not found /data/user/0/com.packagename.redacted/cache/font.ttf android.graphics.Typeface.createFromFile Typeface.java:332 crc643f46942d9dd1fff9.ShellContentFragment.n_onCreateView(Native Method) crc643f46942d9dd1fff9.ShellContentFragment.onCreateView ShellContentFragment.java:69 androidx.fragment.app.Fragment.performCreateView Fragment.java:2963 androidx.fragment.app.FragmentStateManager.createView FragmentStateManager.java:518 androidx.fragment.app.FragmentStateManager.moveToExpectedState FragmentStateManager.java:282 androidx.fragment.app.FragmentManager.executeOpsTogether FragmentManager.java:2189 androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute FragmentManager.java:2100 androidx.fragment.app.FragmentManager.execPendingActions FragmentManager.java:2002 androidx.fragment.app.FragmentManager$5.run FragmentManager.java:524 android.os.Handler.handleCallback Handler.java:751 android.os.Handler.dispatchMessage Handler.java:95 android.os.Looper.loop Looper.java:186 android.app.ActivityThread.main ActivityThread.java:6513 java.lang.reflect.Method.invoke(Native Method) com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run ZygoteInit.java:914 com.android.internal.os.ZygoteInit.main ZygoteInit.java:804 ```

Steps to Reproduce

  1. Add ExportFont assembly directive.
  2. Include ttf font file.
  3. Deploy an app to production

Expected Behavior

The app won't crash and fonts will always be loaded successfully.

Actual Behavior

I've seen this error reported twice in the last couple of weeks, both with similar stack traces as above.

Basic Information

Environment

Show/Hide Visual Studio info ``` Visual Studio Community 2019 for Mac Version 8.10.16 (build 2) Installation UUID: d84992da-d070-4eea-b6f4-ffdcfdf9880c GTK+ 2.24.23 (Raleigh theme) Xamarin.Mac 6.18.0.23 (d16-6 / 088c73638) Package version: 612000162 Mono Framework MDK Runtime: Mono 6.12.0.162 (2020-02/2ca650f1f62) (64-bit) Package version: 612000162 Roslyn (Language Service) 3.10.0-4.21269.26+029847714208ebe49668667c60ea5b0a294e0fcb NuGet Version: 5.9.0.7134 .NET SDK (x64) SDK: /usr/local/share/dotnet/sdk/5.0.404/Sdks SDK Versions: 5.0.404 5.0.403 5.0.402 5.0.401 5.0.400 5.0.302 5.0.301 5.0.203 5.0.202 5.0.201 5.0.103 5.0.102 5.0.101 5.0.100 3.1.416 3.1.415 3.1.414 3.1.413 3.1.412 3.1.411 3.1.410 3.1.409 3.1.408 3.1.407 3.1.406 3.1.405 3.1.404 3.1.403 3.1.402 3.1.401 3.1.302 3.0.100 2.1.401 2.1.4 2.0.0 MSBuild SDKs: /Applications/Visual Studio.app/Contents/Resources/lib/monodevelop/bin/MSBuild/Current/bin/Sdks .NET Core Runtime Runtime: /usr/local/share/dotnet/dotnet Runtime Versions: 5.0.13 5.0.12 5.0.11 5.0.10 5.0.9 5.0.8 5.0.7 5.0.6 5.0.5 5.0.4 5.0.3 5.0.2 5.0.1 5.0.0 3.1.22 3.1.21 3.1.20 3.1.19 3.1.18 3.1.17 3.1.16 3.1.15 3.1.14 3.1.13 3.1.12 3.1.11 3.1.10 3.1.9 3.1.8 3.1.7 3.1.6 3.0.0 2.1.23 2.1.22 2.1.21 2.1.20 2.1.3 2.0.5 2.0.0 1.0.5 Xamarin.Profiler Version: 1.6.15.68 Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler Updater Version: 11 Xamarin.Android Version: 12.0.0.3 (Visual Studio Community) Commit: xamarin-android/d16-11/f0e3c2d Android SDK: /Users/greg/Library/Android/sdk Supported Android versions: None installed SDK Tools Version: 26.1.1 SDK Platform Tools Version: 30.0.4 SDK Build Tools Version: 30.0.2 Build Information: Mono: c633fe9 Java.Interop: xamarin/java.interop/d16-11@476bb5b ProGuard: Guardsquare/proguard/v7.0.1@912d149 SQLite: xamarin/sqlite/3.35.4@85460d3 Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-11@87af37b Eclipse Temurin JDK Java SDK: Not Found Android SDK Manager Version: 16.10.0.13 Hash: 1b81df5 Branch: remotes/origin/d16-10 Build date: 2021-11-12 01:17:32 UTC Android Device Manager Version: 16.10.0.15 Hash: 89dcc0b Branch: remotes/origin/d16-10 Build date: 2021-11-12 01:17:52 UTC Apple Developer Tools Xcode 13.2.1 (19586) Build 13C100 Xamarin.Mac Version: 8.4.0.0 (Visual Studio Community) Hash: 8fc41ae82 Branch: xcode13.2 Build date: 2021-12-09 01:07:56-0500 Xamarin.iOS Version: 15.4.0.0 (Visual Studio Community) Hash: 8fc41ae82 Branch: xcode13.2 Build date: 2021-12-09 01:07:56-0500 Xamarin Designer Version: 16.11.0.39 Hash: cd672761d Branch: remotes/origin/d16-11 Build date: 2021-10-06 21:09:18 UTC Build Information Release ID: 810160002 Git revision: 6dbc7886fa608147f685a7df3912249400c84716 Build date: 2021-12-14 15:54:37-05 Build branch: release-8.10 Operating System Mac OS X 11.6.1 Darwin 20.6.0 Darwin Kernel Version 20.6.0 Tue Oct 12 18:33:42 PDT 2021 root:xnu-7195.141.8~1/RELEASE_X86_64 x86_64 ```

Build Logs

Screenshots

Reproduction Link

Workaround

jfversluis commented 2 years ago

Do you have any additional code that does something with the fonts? How do you load/add the fonts to your project? Do you see this only on Android or also iOS?

greg84 commented 2 years ago

Not doing anything special, just followed your guide here: https://devblogs.microsoft.com/xamarin/embedded-fonts-xamarin-forms/

I think the problem is that EmbeddedFontLoader for Android creates the font file in the cache folder: https://github.com/xamarin/Xamarin.Forms/blob/41a65486600895ea182187358ff2f8ebc8c99290/Xamarin.Forms.Platform.Android/EmbeddedFontLoader.cs#L15

The OS can clear the cache folder at any time, so we need to handle when the file doesn't exist by just creating the font file again. (https://developer.android.com/training/data-storage/app-specific#internal-create-cache)

I can submit a PR if you could talk me through your preferred fix (was thinking maybe move all the calls to CreateFromFile in FontExtensions into a method somewhere and call LoadFont again inside a catch?).

jfversluis commented 2 years ago

But if it exists, we return it and else we try to move it there, that is already happening, right?

https://github.com/xamarin/Xamarin.Forms/blob/41a65486600895ea182187358ff2f8ebc8c99290/Xamarin.Forms.Platform.Android/EmbeddedFontLoader.cs#L18-L27

greg84 commented 2 years ago

Yes, but it appears that FontRegistrar keeps a cache of loaded fonts, so the LoadFont method isn't called again after the first time:

https://github.com/xamarin/Xamarin.Forms/blob/caab66bcf9614aca0c0805d560a34e176d196e17/Xamarin.Forms.Core/FontRegistrar.cs#L33

Maybe bypass the cache on Android and call LoadFont every time? This would ensure the file always exists.

greg84 commented 2 years ago

Closing this as I've been unable to reproduce it. Will continue trying and open a new issue if necessary.

EmilAlipiev commented 2 years ago

thats rare but coming now and then, I have just got for android. Font is there its working fine but I dont get why this error is occuring even not very often. I am using the latest version of the XF and AndroidX libraries.

Android: 6.0.1 Android Build: MXB48T Manufacturer: LGE Model: LG-K220

Java.Lang.RuntimeException: Font not found /data/user/0/myapp.myapp/cache/Roboto-Bold.ttf
  at Java.Interop.JniEnvironment+StaticMethods.CallStaticObjectMethod (Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x0006e] in <6cf3794da10241fd9d34414fe7eafbd2>:0
  at Java.Interop.JniPeerMembers+JniStaticMethods.InvokeObjectMethod (System.String encodedMember, Java.Interop.JniArgumentValue* parameters) <0x9681a13c + 0x00077> in <6cf3794da10241fd9d34414fe7eafbd2>:0
  at Android.Graphics.Typeface.CreateFromFile (System.String path) [0x00029] in <5751d045d69b4cbbb7d00f614ccc9184>:0
  at Xamarin.Forms.Platform.Android.FontExtensions.TryGetFromAssets (System.String fontName) [0x00016] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FontExtensions.ToTypeFace (System.String fontfamily, Xamarin.Forms.FontAttributes attr) [0x0000c] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FontExtensions.CreateTypeface (System.Tuple`2[T1,T2] key) [0x0004b] in <04c545f414d24a37af95d995791bb9a9>:0
  at System.Collections.Concurrent.ConcurrentDictionary`2[TKey,TValue].GetOrAdd (TKey key, System.Func`2[T,TResult] valueFactory) <0x968ede8c + 0x000d7> in <05554d90551f418e8302a63853e107d6>:0
  at Xamarin.Forms.Platform.Android.FontExtensions.ToTypeface (System.String fontFamily, Xamarin.Forms.FontAttributes fontAttributes) [0x00018] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FontExtensions.ToTypeface (Xamarin.Forms.Font self) <0x956b3b68 + 0x0008f> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FastRenderers.LabelRenderer.UpdateFont () [0x0000b] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FastRenderers.LabelRenderer.UpdateText () [0x0011e] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FastRenderers.LabelRenderer.OnElementChanged (Xamarin.Forms.Platform.Android.ElementChangedEventArgs`1[TElement] e) [0x00086] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FastRenderers.LabelRenderer.set_Element (Xamarin.Forms.Label value) [0x00025] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FastRenderers.LabelRenderer.Xamarin.Forms.Platform.Android.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00015] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.Platform.CreateRenderer (Xamarin.Forms.VisualElement element, Android.Content.Context context) <0x956a9e90 + 0x00107> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.VisualElementPackager.AddChild (Xamarin.Forms.VisualElement view, Xamarin.Forms.Platform.Android.IVisualElementRenderer oldRenderer, Xamarin.Forms.Platform.Android.RendererPool pool, System.Boolean sameChildren) <0x956c409c + 0x00227> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.VisualElementPackager.SetElement (Xamarin.Forms.VisualElement oldElement, Xamarin.Forms.VisualElement newElement) <0x956c45e8 + 0x003f3> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.VisualElementRenderer`1[TElement].SetPackager (Xamarin.Forms.Platform.Android.VisualElementPackager packager) <0x956c8294 + 0x00063> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.VisualElementRenderer`1[TElement].SetElement (TElement element) <0x956c653c + 0x00333> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.VisualElementRenderer`1[TElement].Xamarin.Forms.Platform.Android.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) <0x956c5688 + 0x00093> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.Platform.CreateRenderer (Xamarin.Forms.VisualElement element, Android.Content.Context context) <0x956a9e90 + 0x00107> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.VisualElementPackager.AddChild (Xamarin.Forms.VisualElement view, Xamarin.Forms.Platform.Android.IVisualElementRenderer oldRenderer, Xamarin.Forms.Platform.Android.RendererPool pool, System.Boolean sameChildren) <0x956c409c + 0x00227> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.VisualElementPackager.SetElement (Xamarin.Forms.VisualElement oldElement, Xamarin.Forms.VisualElement newElement) <0x956c45e8 + 0x003f3> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.VisualElementPackager.Load () <0x956c4048 + 0x00037> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FastRenderers.FrameRenderer.OnElementChanged (Xamarin.Forms.Platform.Android.ElementChangedEventArgs`1[TElement] e) [0x00098] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FastRenderers.FrameRenderer.set_Element (Xamarin.Forms.Frame value) [0x00025] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.FastRenderers.FrameRenderer.Xamarin.Forms.Platform.Android.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00015] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.Platform.CreateRenderer (Xamarin.Forms.VisualElement element, Android.Content.Context context) <0x956a9e90 + 0x00107> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.VisualElementPackager.AddChild (Xamarin.Forms.VisualElement view, Xamarin.Forms.Platform.Android.IVisualElementRenderer oldRenderer, Xamarin.Forms.Platform.Android.RendererPool pool, System.Boolean sameChildren) <0x956c409c + 0x00227> in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Platform.Android.VisualElementPackager.OnChildAdded (System.Object sender, Xamarin.Forms.ElementEventArgs e) [0x0000f] in <04c545f414d24a37af95d995791bb9a9>:0
  at Xamarin.Forms.Element.OnChildAdded (Xamarin.Forms.Element child) <0x955c0c00 + 0x000a7> in <978ec34c5c9c4c4eb3d73b6da958bcd6>:0
  at Xamarin.Forms.VisualElement.OnChildAdded (Xamarin.Forms.Element child) <0x955f6818 + 0x00047> in <978ec34c5c9c4c4eb3d73b6da958bcd6>:0
  at Syncfusion.ListView.XForms.ListViewItem.OnChildAdded (Xamarin.Forms.Element child) [0x00000] in <f031c2d0f0dc4e3a9f19bf76336fbc57>:0
greg84 commented 2 years ago

I'm going to reopen this, I have a reproduction scenario. I'll put something together and add it here.

I encountered this today during development on an emulator, so I've got a full stack trace with line numbers now, which is more useful.

My current theory is that the Dictionary used to cache the font files in FontRegistrar is preventing the file from being recreated because LoadFont is only ever called once - the first time it's needed (the stack trace I've got doesn't pass through that method so it doesn't check that the file exists).

The font files are being deleted while the app is running, the emulator was low on disk space when the crash occurred. It's likely that the few users who are being affected have a low amount of storage available on their device.

uragonda-rajesh commented 2 years ago

Hi @greg84 ,

We see similar crashes (#15416) on our app, any ETA for the fix?

varyamereon commented 1 year ago

Seeing this issue too by adding a new font to a currently installed app. The font doesn't load and the error message detailed above is shown in the output.

uragonda-rajesh commented 1 year ago

Hi Team, any update on this issue?

jherink commented 1 year ago

Also would like updates on this.

kkppstudios commented 1 year ago

My app is showing crashes from this issue as well

darrabam commented 1 year ago

I'm also getting this crash reported in AppCenter for few Android devices, Any workaround?

MitchBomcanhao commented 1 year ago

started seeing these crashes too (Font asset not found) - just from one user at the moment (Galaxy A22s 5G, on Android 13)... this is in code that has been in production for years and as far as I know we've not had these failures before. Maybe google have changed something recently which is causing these to be more common?

Edit: noticed we also had another on a Galaxy Tab A7 on Android 12

kkppstudios commented 1 year ago

Same here. Definitely a more common issue that I haven't seen before. All of my AppCenter crashes are coming from Android 13 devices. All Galaxy devices as well

Screenshot_20230727-110410

Colinkl commented 1 year ago

Any ETA on fix?

arvindrajachourasiya commented 1 year ago

I am also facing same issue

MitchBomcanhao commented 1 year ago

now getting more and more of these crashes.

tamasszadvari commented 1 year ago

This is a critical issue for me also, as it makes production apps crash constantly. Please resolve it. Migrating to MAUI would be a lot bigger job, and out client won't will to pay for that, just because there's a framework bug in Xamarin.Forms.

MitchBomcanhao commented 1 year ago

the number of these crashes keeps going up for us...

jherink commented 1 year ago

This is also a growing issue for us.

tamasszadvari commented 1 year ago

Try running your app in a really lowend emulator with low resources. For us it turned out that one of our ViewModels started a resource-heavy task on the main thread, which resulted in an out of memory exception. This crash about missing a font was just the simptom of this memory problem. (Possibly the device went out of memory, and to try to handle that, it cleared the cache also.) When I move that task to a background thread, the problem disappeared.

DennisWelu commented 1 year ago

Same here. Definitely a more common issue that I haven't seen before. All of my AppCenter crashes are coming from Android 13 devices. All Galaxy devices as well

Screenshot_20230727-110410

Similar experience for us - only has become an issue relatively recently for apps that are otherwise years old. Happening on Android 13 / Galaxy Tab devices...

ArtjomP commented 1 year ago

Any update on this?

ArtjomP commented 1 year ago

Add added the next code to my Android project:

[assembly: ExportRenderer(typeof(EmbeddedFont), typeof(MyEmbeddedFontLoader))]

namespace MyProject.Droid
{
    public class MyEmbeddedFontLoader : IEmbeddedFontLoader
    {
        public (bool success, string? filePath) LoadFont(EmbeddedFont font)
        {
            var tmpdir = Xamarin.Essentials.FileSystem.AppDataDirectory;
            var filePath = Path.Combine(tmpdir, font.FontName);
            var fileInfo = new FileInfo(filePath);
            if (fileInfo.Exists && fileInfo.Length == font.ResourceStream.Length)
                return (true, filePath);
            try
            {
                using (var fileStream = File.Create(filePath))
                {
                    font.ResourceStream.CopyTo(fileStream);
                }
                return (true, filePath);
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message);
                Debug.WriteLine(ex.StackTrace);
                File.Delete(filePath);
            }

            return (false, null);
        }
    }
}
MitchBomcanhao commented 1 year ago

Add added the next code to my Android project:

[assembly: ExportRenderer(typeof(EmbeddedFont), typeof(MyEmbeddedFontLoader))]

namespace MyProject.Droid
{
    public class MyEmbeddedFontLoader : IEmbeddedFontLoader
    {
        public (bool success, string? filePath) LoadFont(EmbeddedFont font)
        {
            var tmpdir = Xamarin.Essentials.FileSystem.AppDataDirectory;
            var filePath = Path.Combine(tmpdir, font.FontName);
            var fileInfo = new FileInfo(filePath);
            if (fileInfo.Exists && fileInfo.Length == font.ResourceStream.Length)
                return (true, filePath);
            try
            {
                using (var fileStream = File.Create(filePath))
                {
                    font.ResourceStream.CopyTo(fileStream);
                }
                return (true, filePath);
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message);
                Debug.WriteLine(ex.StackTrace);
                File.Delete(filePath);
            }

            return (false, null);
        }
    }
}

@ArtjomP that code is essentially exactly the same as the default font loader already in xamarin forms. how is that supposed to change things? [pardon me if i've missed something obvious - this is a genuine question, not a critique]

ArtjomP commented 1 year ago

Add added the next code to my Android project:

[assembly: ExportRenderer(typeof(EmbeddedFont), typeof(MyEmbeddedFontLoader))]

namespace MyProject.Droid
{
    public class MyEmbeddedFontLoader : IEmbeddedFontLoader
    {
        public (bool success, string? filePath) LoadFont(EmbeddedFont font)
        {
            var tmpdir = Xamarin.Essentials.FileSystem.AppDataDirectory;
            var filePath = Path.Combine(tmpdir, font.FontName);
            var fileInfo = new FileInfo(filePath);
            if (fileInfo.Exists && fileInfo.Length == font.ResourceStream.Length)
                return (true, filePath);
            try
            {
                using (var fileStream = File.Create(filePath))
                {
                    font.ResourceStream.CopyTo(fileStream);
                }
                return (true, filePath);
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message);
                Debug.WriteLine(ex.StackTrace);
                File.Delete(filePath);
            }

            return (false, null);
        }
    }
}

@ArtjomP that code is essentially exactly the same as the default font loader already in xamarin forms. how is that supposed to change things? [pardon me if i've missed something obvious - this is a genuine question, not a critique]

It uses Xamarin.Essentials.FileSystem.AppDataDirectory instead of temp folder. Android should not remove files from Xamarin.Essentials.FileSystem.AppDataDirectory.

MitchBomcanhao commented 1 year ago

Ah yes that makes perfect sense, thanks for clarifying.

Colinkl commented 1 year ago

Although I found way to reproduce this issue. Requirements: Samsung device with Android 13. Steps:

  1. Open an app
  2. Quit app, app should be in background
  3. Open device settings, open app details
  4. Clear app cache
  5. Resume app After that app will crash. For some reason issue does not reproduces on Android Emulator and other android devices.
tscholze commented 7 months ago

I have no issues working in emulators, but as I start to test my app on an actual device, I also get such error.

Host: MacOS, Windows IDE: Rider (MACOS), Visual Studio (Windows) Android Device: Surface Duo 1