Saving on iOS casuses crash

Bug Reports
1

After saving on iOS, 99% of the time - for this project in particular - the app will crash and never work again. Here’s the error:

 Preview detected an unhandled exception: Uno.AggregateException: One or more errors occurred.
       at Fuse.UpdateManager.Update(Fuse.Stage)
       at Fuse.UpdateManager.Update()
       at Fuse.AppBase.OnUpdate()
       at Fuse.App.OnUpdate()
       at Outracks.Simulator.Application.OnUpdate()
       at Fuse.App.OnTick(object,Uno.Platform.TimerEventArgs)
       at Uno.Platform2.Display.OnTick(Uno.Platform.TimerEventArgs)
ERROR: Not handled: OnNewAll
    Uno.Exception occured.
       at Fuse.Reactive.DataBinding1.Fuse.Reactive.IObserver.OnNewAll(Fuse.Scripting.Array)
       at Uno.Threading.IDispatcherExtensions.Arg1Invoke1.Run()
       at Fuse.Reactive.Dispatcher.Run()
       at Fuse.UpdateListener.Invoke()
       at Fuse.UpdateManager.Update(Fuse.Stage)
       at Fuse.UpdateManager.Update()
       at Fuse.AppBase.OnUpdate()
       at Fuse.App.OnUpdate()
       at Outracks.Simulator.Application.OnUpdate()
       at Fuse.App.OnTick(object,Uno.Platform.TimerEventArgs)
       at Uno.Platform2.Display.OnTick(Uno.Platform.TimerEventArgs)

I get OnNewAll in local preview sometimes too, but it’s very rare. On android this has never happened so far.

Project sent to support@fusetools.com

In order to reproduce the error, data must be saved on iOS. To do this in the app:

  1. Tap the dumbbell icon on the bottom tab bar

  2. Tap the plus icon on the top right

  3. Add 2+ exercises

  4. Tap “Finish” on the top right

The error mentioned should pop up. There is a small chance this error won’t happen, and the saving will work, in which case please repeat the steps and the error will certainly happen.

Some information that might be useful:

  • Line 40 is the load function. Data isn’t actually loaded but the JSON string is parsed.
  • Line 106 is the save function, this is the only place data is saved.
  • Lines 23 - 28 are the only lines involved in the actual loading of the saved (or not yet created) data.
2

Hello!

The problem is that you’ve got a multi-valued observable (workouts.days) that you’re binding to the Value of a Text element, which is not allowed. The error message could be much better though, so I will create an internal issue to improve that. :slight_smile:

Thanks for your report!

3

That worked perfectly, thanks a lot!