xamarin/Xamarin.Forms

[Bug] [iOS] image doesn't expand if LayoutOptions are defined

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#8,246 opened on Oct 25, 2019

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e/4 :clock4:help wantedinactivep/iOS 🍎t/bug :bug:up-for-grabs

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Description

Description

in iOS, images are not expanding when LayoutOptions are defined even though the options are declared with "andExpand"

Steps to Reproduce

  1. Run the attached program in Android. Open the Master Menu. Note that the image expands to take most of the view area (Aspect Fit) while anchored to the bottom of the view
  2. Run the program in iOS and open the menu. Note that there is a large white space on 3 sides of the image, it has not expanded, but it is anchored to the bottom of the view
  3. Open MenuPage.cs and comment lines 21 & 22 (the setting of the Vertical and Horizontal Options in the Image object). Run in iOS again. This time the image did expand, although it is centered vertically.

Expected Behavior

The image should expand to fill the parent area.

Actual Behavior

The images does not expand

Basic Information

  • Version with issue: 4.3.0.908675

Screenshots

image

image

image

Reproduction Link

Contributor guide

Research direction
Investigate the difference in layout behavior between iOS and Android when LayoutOptions with 'AndExpand' are used on Image elements. Check the platform specific renderer implementations for Xamarin.Forms.Image on iOS and Android.
Tech stack
csharp
Domain
mobile
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.
1-2 days
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
Xamarin.Forms
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70