Looking at the headers for BarCodeKit, I’d suggest you use the class method:
+ (instancetype)code39WithContent:(NSString *)content error:(NSError *__autoreleasing *)error;
E.g. in Swift 4.2:
do {
let barcode = try BCKCode39Code.code39(withContent: string) // or use rendition with `withModulo43` parameter
imageView.image = UIImage(barCode: barcode, options: nil)
} catch {
print(error)
}
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solved How to convert BarCodeKit Objective-C code into Swift?