Loading images from assets folder from a bundle

Question

I have a bundle with assets folder in it. I have read all the answers on stack about using UIImage(named: "drop_arrow", inBundle: bundle, compatibleWithTraitCollection: nil) (well, it's swift 3 equivalent)

path = Bundle.main.path(forResource: "LiveUI", ofType: "bundle")
if path != nil { // path with bundle is found
     let bundle: Bundle = Bundle.init(path: path!)! // bundle is there
     let image: UIImage? = UIImage(named: "HomePlayButton", in: bundle, compatibleWith: nil)
     // HomePlayButton exists in the bundle/asset folder
     // but image is nil
}

This is my project structure:

Can you see any problem with the code/structure of the project?

UPDATE! ... The image is set for all resolutions as universal:

try this image with bundle name `UIImage(named: "yourbundlefile.bundle/HomePlayButton.png")!` — Umesh Verma, Sep 19 '16 at 18:19

score 10 · Accepted Answer · edited Jul 01 '19 at 18:30

10

Two things to check.

1) make sure your assets bundle has an Info.plist with a bundle identifier set in it. From your screenshot it doesn't look like this is the case.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleIdentifier</key>
    <string>MyBundle</string>
</dict>
</plist>

2) Make sure your bundle has a compiled assets catalog in it. Should be named Assets.car. I don't think Xcode will just compile an Assets.xcassets folder inside a resource bundle (the bundle is effectively opaque to Xcode; likewise it wouldn't compile any .m source files you put in there). You may need a custom build step to copy the compiled Assets.car file into your assets bundle before the assets bundle is copied into the app bundle.

You can check these by finding your app bundle and right clicking on it then "Show Package Contents", then again on the contained bundle.

Manual assets compilation command:

xcrun actool Images.xcassets --compile . --platform iphoneos --minimum-deployment-target 9.0

edited Jul 01 '19 at 18:30

ph4r05

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answered Sep 22 '16 at 17:02

TomSwift

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"You may need a custom build step to copy the compiled Assets.car file into your assets bundle before the assets bundle is copied into the app bundle." Could you please provide example ? – Andriy Savran Feb 02 '17 at 15:01
@TomSwift I have compile .xcassets to Assets.car and put it inside the xxx.bundle along with info.plist with bundleIdentifier = xxx, but it is still not working. Anything I am missing here ? UIImage *image = [UIImage imageNamed:@"iimageName" inBundle:bundle compatibleWithTraitCollection:nil]; – Shikha Shah Feb 28 '18 at 19:50
a) Adding `Info.plist` with `CFBundleIdentifier` and b) compiling assets manually helped. The compilation command: `xcrun actool Images.xcassets --compile . --platform iphoneos --minimum-deployment-target 9.0` – ph4r05 Jul 01 '19 at 16:46

score 0 · Answer 2 · answered Sep 22 '16 at 13:00

Just an idea, make sure the bundle and the asset catalog in the bundle have a Target Membership property assigned to the correct target you are trying to load the images with (Utilities pane -> Target Membership):

It's possible that your target is able to find the bundle but not the asset catalog for some reason.

Loading images from assets folder from a bundle

2 Answers2