image from xcassets iOS11

Question

I have a set of images inside an .xcassets folder. Using iOS 11 and Xcode 9 I access them with

    func searchCodes() -> NSArray {

    let file = Bundle.main.url(forResource: "PickerStations", withExtension: "plist")
                return NSArray(contentsOf: file!)!
    }

    lineCode = searchCodes().object(at: 1) as? NSDictionary

    //lineFirstInitial is either C,H,J,N,P,D,M,V,B or W
    let lineNameFromInitial = lineCode?.allKeys(for: lineFirstInitial).first as! String

    //lineNameFromInitial is 100% correct value and loaded from an array of Strings. 
//Looped through and each value added to the code below. 
                if let lineLabelImage = UIImage(named: lineNameFromInitial) {
                   lineLabelImageView.image = lineLabelImage
    }

Some Images enter the block and yet others do not as they return nil. However the images are 100% in the .xcassets and the file name is 100% correct. I have tried hardcoding the images name instead of passing the variable lineNameFromInitial but the images are still nil for some despite actually existing.

The images are found using the keys in a plist

Any suggestions?

Can you provide a picture of your xcAssets and your string array? — Bruno Rocha, Sep 28 '17 at 13:56
That's weird. Can you post the code that initializes `lineNameFromInitial`? By the way: unwrapping of the `UIImage` is not needed in your case because `lineLabelImageView.image` can handle `nil` — joern, Sep 28 '17 at 15:04
Ill add to question. As I mentioned thought that even if I hard code by typing "District" it still returns nil — RyanTCB, Sep 28 '17 at 15:08
I ran your code on my machine, but I could not reproduce the issue. The images are loading everytime. — joern, Sep 28 '17 at 17:02
I think i may need me to start a new project and migrate the files over as Xcode clearly has an issue with the files in the current project — RyanTCB, Sep 28 '17 at 17:04

score 1 · Answer 1 · answered Sep 28 '17 at 13:57

1

Two reasons that might be the reason for the images being nil:

1. The images have not been added to your app's target.

2. The images have a name with special characters:

Xcode does not like assets that have special characters like ÄÖÜ etc. in their name. Have a look at the problematic images' names and change those characters to plain old english characters.

answered Sep 28 '17 at 13:57

joern

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They are added to app target. Will update original post to reflect. TY – RyanTCB Sep 28 '17 at 14:48
Thanks for the note about special chars! – LinusGeffarth May 02 '18 at 10:21

image from xcassets iOS11

1 Answers1