xamarin/Xamarin.Forms
Xamarin.Forms.Picker Focused property strange behavior in UWP
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#9 128 ouverte le 8 janv. 2020
e/4 :clock4:help wantedinactivep/UWPt/bug :bug:up-for-grabs
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Description
Description
Focused property does not appear to be tied to whether or not the user is manipulating the picker
Steps to Reproduce
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Start with the Xamarin.Forms Bindable Picker sample: https://docs.microsoft.com/en-us/samples/xamarin/xamarin-forms-samples/userinterface-bindablepicker/
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Add a SelectedIndexChanged event handler to the picker, so it looks like this:
<Picker Title="Select a color" ItemsSource="{Binding ColorNames}" SelectedItem="{Binding SelectedColorName, Mode=TwoWay}" SelectedIndexChanged="Picker_SelectedIndexChanged"/> -
Implement the event handler like this:
private void Picker_SelectedIndexChanged(object sender, System.EventArgs e) { var picker = sender as Picker; bool focused = picker.IsFocused; if (!focused) { int x = 3; } } -
Set a breakpoint on the line "int x = 3;"
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Run the UWP project.
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Set the color in the UI.
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Change the color.
Expected Behavior
At step 7, the picker should be focused, so the breakpoint should not be hit.
Actual Behavior
The breakpoint is hit.
Basic Information
- Version with issue:
- Last known good version:
- IDE:
- Platform Target Frameworks:
- UWP: Target version is 17763. I don't know if that is what I actually build against or not.
- Android Support Library Version:
- Nuget Packages:
- Affected Devices: Windows