import UIKit
var imageDebugStringKey: UInt8 = 0
extension UIImage {
var debugString: String {
get {
return objc_getAssociatedObject(self, &imageDebugStringKey) as? String ?? ""
}
set {
objc_setAssociatedObject(self, &imageDebugStringKey, newValue, .OBJC_ASSOCIATION_RETAIN)
}
}
}
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let img1 = UIImage(named: "img")!
img1.debugString = "画像1"
let img2 = UIImage()
img2.debugString = "画像2"
print(img1.debugString)
print(img2.debugString)
}
}
Last active
June 16, 2018 16:30
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