xamarin/Xamarin.Forms

[UWP] ListView scroll issues

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#3,573 建立於 2018年8月15日

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a/listviewe/4 :clock4:help wantedinactivep/UWPt/bug :bug:up-for-grabs

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描述

Description

I have a ListView that demonstrates using the new binding capabilities (TargetNullValue, Fallback Value). Unfortunately the ListView misbehaves on UWP. Following back navigation from the detail page, the list stops scrolling until fingers are replaced on screen.

This is only reproducible when running from a device with a touch screen. I first tested this by remoting from a device with a touch screen and I couldn't reproduce

Steps to Reproduce

  1. Run the sample.
  2. Navigate to detail page (click on a monkey).
  3. Navigate back.
  4. Scroll the ListView.

Expected Behavior

The ListView scrolls perfectly.

Actual Behavior

The ListView scrolls then stops, and only resumes when the scroll gesture is restarted (fingers removed and replaced).

Basic Information

  • Version with issue: 3.2.0.729530-pre2
  • Issue also exists with 3.1 haven't tested back any further
  • IDE: VS2017 15.8
  • Platform Target Frameworks:
    • UWP: 10.0.16299.0

Reproduction Link

DataBindingDemos.zip

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