SwiftUI Image from Data

user_12207591 0
Viewed 175

I am making a multi-platform SwiftUI app that loads the song artwork from an .mp3 file

let playerItem = AVPlayerItem(url: fileURL)
let metadataList = playerItem.asset.metadata
for item in metadataList {
    guard let key = item.commonKey, let value = item.value else{
        continue
    }

    switch key {
    case .commonKeyArtwork where value is Data :
        let songArtwork = UIImage(data: value as! Data)!
    default:
        continue                    
    }
}

I can also get data by using let interprettedMP3 = AVAsset(url: fileURL) and the metadata from that. This all works fine for ios using UIImage(data: value as! Data)! but macos doesn't support uiimage so how am I supposed to make an image from this data?

swiftui swift
2 Answers

It is possible to make some platform-depedent image builder, like

func createImage(_ value: Data) -> Image {
#if canImport(UIKit)
    let songArtwork: UIImage = UIImage(data: value) ?? UIImage()
    return Image(uiImage: songArtwork)
#elseif canImport(AppKit)
    let songArtwork: NSImage = NSImage(data: value) ?? NSImage()
    return Image(nsImage: songArtwork)
#else
    return Image(systemImage: "some_default")
#endif
}

*Note: actually it can be also used #if os(iOS) etc, but Apple does not recommend to check OS directly until it is really needed explicit platform knowledge, but instead check API like above.

user_122990300

It depends on what you want... But the best way I think is to use the same way implemented before:

extension Image {
    
    init?(data: Data) {
        guard let image = UIImage(data: data) else { return nil }
        self = .init(uiImage: image)
    }
    
}
user_57698260
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