While using ListView DataTemplate, the requestLayout improperly called issue arises.

[RabhiaBehamK]

Description

ListView DataTemplate shows the following error message in the output window

"[View] requestLayout() improperly called by md58432a647068b097f9637064b8985a5e0.NavigationPageRenderer{b089ff1 V.E...... ......ID 0,0-1080,1731 #1} during second layout pass: posting in next frame"

Steps to Reproduce

1. Create a ListView with a collection in a custom layout.
2. Run the sample.
3. Check the Application Output for the error message.

Expected Behavior

The error messages should not be seen in the Application Output.

Actual Behavior

The below error message is seen in the Application Output:

[View] requestLayout() improperly called by md58432a647068b097f9637064b8985a5e0.NavigationPageRenderer{b089ff1 V.E...... ......ID 0,0-1080,1731 #1} during second layout pass: posting in next frame

Basic Information

• Version with issue: Latest Xamarin.Forms [4.5.396]
• Platform Target Frameworks:
  • Android: 7.1
• Nuget Packages: 4.5.396
• Affected Devices:
  Moto G5 and Emulator with API 29.

Screenshots

Reproduction Link

ListViewTest.zip

[jeyakasipandi]

Can you check this issue with high priority?

[jsuarezruiz]

I have been testing the example, and can reproduce the issue:

Tested on Xamarin.Forms 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 and 4.6. This has caught my attention, I have replicated the example in the simplest way (without using plugins, etc.) and in that case I cannot reproduce the issue.

Issue10055.zip

I have to check with details what is done in PostCellViewModel etc. to know exactly where the issue is.

I have also tested the same code using CollectionView and everything works correctly.