[Bug] ScaleTo IllegalArgumentException (Android only)

[mknotzer]

calling ScaleTo twice causes an Exception on Android

await oFrame.ScaleTo(0.2, 0); // ok
await oFrame.ScaleTo(0.2, 0); // exception

XF 4.8.0.1821

Java.Lang.IllegalArgumentException: Cannot set 'scaleX' to Float.NaN
at Java.Interop.JniEnvironment+InstanceMethods.CallNonvirtualVoidMethod (Java.Interop.JniObjectReference instance, Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x0008e] in <89755ea61d9c4ae0a40ce90b872c9e2d>:0
at Java.Interop.JniPeerMembers+JniInstanceMethods.InvokeVirtualVoidMethod (System.String encodedMember, Java.Interop.IJavaPeerable self, Java.Interop.JniArgumentValue* parameters) [0x0005d] in <89755ea61d9c4ae0a40ce90b872c9e2d>:0
at Android.Views.View.set_ScaleX (System.Single value) [0x00022] in <2df86f44c8e946618f31cb3aed952f5b>:0
at Xamarin.Forms.Platform.Android.VisualElementTracker.UpdateScale () [0x00017] in D:\a\1\s\Xamarin.Forms.Platform.Android\VisualElementTracker.cs:397
at Xamarin.Forms.Platform.Android.VisualElementTracker.HandlePropertyChanged (System.Object sender, System.ComponentModel.PropertyChangedEventArgs e) [0x002eb] in D:\a\1\s\Xamarin.Forms.Platform.Android\VisualElementTracker.cs:170
at Xamarin.Forms.Platform.Android.VisualElementTracker.HandleRedrawNeeded (System.Object sender, Xamarin.Forms.Internals.EventArg`1[T] e) [0x00015] in D:\a\1\s\Xamarin.Forms.Platform.Android\VisualElementTracker.cs:194
at Xamarin.Forms.VisualElement.BatchCommit () [0x0001c] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:620
at Xamarin.Forms.AnimationExtensions.HandleTweenerUpdated (System.Object o, System.EventArgs args) [0x0004f] in D:\a\1\s\Xamarin.Forms.Core\AnimationExtensions.cs:276
at Xamarin.Forms.Tweener.b__27_0 (System.Int64 step) [0x00078] in D:\a\1\s\Xamarin.Forms.Core\Tweener.cs:108
at Xamarin.Forms.Internals.Ticker.SendSignals (System.Int64 step) [0x0003c] in D:\a\1\s\Xamarin.Forms.Core\Internals\Ticker.cs:136
at Xamarin.Forms.Internals.Ticker.SendSignals (System.Int32 timestep) [0x00014] in D:\a\1\s\Xamarin.Forms.Core\Internals\Ticker.cs:125
at Xamarin.Forms.Platform.Android.AndroidTicker.OnValOnUpdate (System.Object sender, Android.Animation.ValueAnimator+AnimatorUpdateEventArgs e) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.Android\AndroidTicker.cs:117
at Android.Animation.ValueAnimator+IAnimatorUpdateListenerImplementor.OnAnimationUpdate (Android.Animation.ValueAnimator animation) [0x00017] in <2df86f44c8e946618f31cb3aed952f5b>:0
at Android.Animation.ValueAnimator+IAnimatorUpdateListenerInvoker.n_OnAnimationUpdate_Landroid_animation_ValueAnimator_ (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_animation) [0x0000f] in <2df86f44c8e946618f31cb3aed952f5b>:0
at at (wrapper dynamic-method) Android.Runtime.DynamicMethodNameCounter.196(intptr,intptr,intptr)
at java.lang.IllegalArgumentException: Cannot set 'scaleX' to Float.NaN

[hartez]

@mknotzer I'm trying to reproduce this issue, but so far I'm not having any success. Calling ScaleTo twice on a Frame isn't throwing an exception.

I've attached my repro project - is there a detail I'm missing?

_13236 Repro.zip

[mknotzer]

Android crashes now already at the first call.

changing
await oView.ScaleTo(0.2, 0);
to
await oView.ScaleTo(0.2, 10);

fixed it.

btw: the View was set to Invisible = False

[mknotzer]

@hartez Your project crashes at the second call, testet with Android Emulator Pixel 2 Pie (API 28)

[rachelkang]

am able to reproduce the crash on @hartez's repro as described

[rachelkang]

also seeing this on the latest version! XF 5.0.0.1931