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                ## IOS開發玩轉界面 UI 是 IOS 中 IOS開發的基礎功,熟練的掌握UIKit框架的引用,學習 IOS 開發就完成了一半。下面總結 UIKit 框架中所有系統控件,學習自定義控件的封裝和搭建。 UILable 文本顯示控件 UIButton 簡單的交互控件 UIImageView 圖片顯示控件 UISearch 搜索控件 UISwitch 開關控件 UISegmentControl 分段控制器 UITextField 小巧的輸入框 UISider 滑塊控件 UIActivityIndicatorView 提示器控件 UIprogressView 進度條控件 UIPageControl 分頁控制器 UIStepper 步進控制器 UIAlertController 警告框 / 抽屜 ### 設置組建的 layer 屬性 ``` let imageView: UIImageView = UIImageView(frame: CGRect(x: 100, y: 100, width: 100, height: 100) ) imageView.backgroundColor = UIColor.red // 設置圓角 imageView.layer.masksToBounds = true // 設置圓角半徑 imageView.layer.cornerRadius = 50 // 設置邊框屬性 imageView.layer.borderColor = UIColor.green.cgColor imageView.layer.borderWidth = 2 // 設置陰影 imageView.layer.shadowColor = UIColor.purple.cgColor imageView.layer.shadowOffset = CGSize(width: 10, height: 10) imageView.layer.shadowOpacity = 1 self.view.addSubview(imageView) ```
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