xamarin/Xamarin.Forms

[Bug] TabbedPage tabs widths work inconsistently

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#7,673 opened on Sep 25, 2019

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Description

Description

The TabbedPage's tabs widths work inconsistently.

Steps to Reproduce

  1. Download the official MS sample about tabbedpages: https://github.com/xamarin/xamarin-forms-samples/releases/download/68797/Xamarin_Forms___TabbedPage_with_NavigationPage.zip
  2. Remove one child in the MainPage.xaml tabbedpage.
  3. Launch the app on a tablet or on a phone in landscape orientation.

Expected Behavior

Each tab should use half of the screen.

Actual Behavior

The tabs are very small and doesn't take the whole space when there's one or two tabs.

Basic Information

  • IDE: Visual Studio Enterprise 2019 16.3
  • Platform Target Frameworks:
    • Android: 9.0
  • Nuget Packages: The packages included in the sample

Screenshots

2 tabs tablet
Tablet 2 tabs

4 tabs tablet
Tablet 4 tabs

Phone portrait
Phone portrait

Phone Landscape
Phone Landscape

Contributor guide

Research direction
Investigate the tab width calculation in the TabbedPage renderer for Android, particularly when there are only one or two tabs.
Tech stack
csharp
Domain
frontend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitXamarin.Forms basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75