xamarin/Xamarin.Forms

Android: ImageSource.FromFile does not pick up images if they are stored in a mipmap folder

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#3,244 opened on Jul 9, 2018

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Description

Description

If Android images are stored in mipmap folders (see attached screenshot), then ImageSource.FromFile does not pick the images up, since the associated resource lies in the Resources.Mipmap type as opposed to the Resources.Drawable type.

Steps to Reproduce

  1. Create a Xamarin Forms project using File -> New Project
  2. Check that image resources are held in mipmap files, as per the attached screenshot. The F# template certainly does this.
  3. Load an image using ImageSource.FromFile

Expected Behavior

The image should be visible.

Actual Behavior

The image is not visible.

Basic Information

  • Version with issue:
  • Last known good version:
  • IDE:
  • Platform Target Frameworks:
    • iOS:
    • Android:
    • UWP:
  • Android Support Library Version:
  • Nuget Packages:
  • Affected Devices:

Screenshots

image

Reproduction Link

Contributor guide

Research direction
Investigate how ImageSource.FromFile resolves image paths in Xamarin.Forms for Android, specifically the logic that maps resource names to resource IDs. Determine why mipmap resources are not picked up and propose a fix to also check Resources.Mipmap when the image is not found in Resources.Drawable.
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.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
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.FormsAndroid resource handling
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50