Created
September 2, 2018 14:06
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UILabelへ簡単にグラデーションを適用する方法 ref: https://qiita.com/YutoMizutani/items/a66bb3a3b0d67f3d2547
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| let frame: CGRect = /* foo */ | |
| let view: UIView = UIView(frame: frame) | |
| let label: UILabel = UILabel(frame: frame) | |
| label.text = /* bar */ | |
| // ViewにLabelを追加する | |
| view.addSubView(label) | |
| // CAGradientLayerによるグラデーションの適用 | |
| let gradientLayer: CAGradientLayer = CAGradientLayer() | |
| gradientLayer.frame = view.bounds | |
| gradientLayer.colors = [ | |
| /* UIColor */ | |
| ] | |
| // グラデーション方向の指定 (以下は縦方向) | |
| gradientLayer.startPoint = CGPoint(x: 0.5, y: 0) | |
| gradientLayer.endPoint = CGPoint(x: 0.5, y: 1.0) | |
| // Viewに対してグラデーションを適用させる | |
| view.layer.insertSublayer(self.gradientLayer, at: 0) | |
| // ViewをLabelでマスクする | |
| view.mask = label |
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