Wrong image is shown in interface image in WatchKit

Question

I'm seeing a bug in WatchKit where it shows a wrong image when assigned by name programmatically or from the storyboard. Am I doing anything wrong here?

How to reproduce

1. Add images to the WatchKit app with names image_1.png and image_10.png.
2. Set the first image to the interface image: image.setImageNamed("image_1")

Expected behaviour

First image image_1.png is shown.

Actual behaviour

Second image image_10.png is shown.

Tested in Xcode

• Version 6.2 (6C131e)
• Version 6.3 (6D532l)

Demo

https://github.com/evgenyneu/watch-image-glitch-demo

Update

This bug has been submitted to Apple Bug Reporter. Apple confirmed that this is a bug.

Answer 1

You should definitely file a Serious Bug radar. I pulled down your sample project (great work by the way) and ran it. I'm certainly seeing the same behavior on Xcode 6.2 (6C131e).

I also moved the images into the xcassets bundle which didn't have any affect on the issue. The only thing that I noticed is that renaming the image_10 to image_11, image_12 or image_100 did fix the problem. It appears that only image_10 is the culprit.