回答編集履歴
1
s
test
CHANGED
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@@ -37,3 +37,57 @@
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37
37
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@IBOutlet weak var subbutton: CustomButton!
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```
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40
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41
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42
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`UIButton`に対して背景を赤くするメソッドを作りそれを呼ぶ方法
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```swift
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48
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import UIKit
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52
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53
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54
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55
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class ViewController: UIViewController {
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57
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@IBOutlet weak var button: UIButton!
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60
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61
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override func viewDidLoad() {
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super.viewDidLoad()
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67
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68
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69
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button.backgroundRedColor()
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70
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}
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}
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76
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extension UIButton {
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80
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81
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// 背景色を赤にするメソッド
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85
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func backgroundRedColor() {
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86
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backgroundColor = .red
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}
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}
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```
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