使用UIImage - NSAttributedString删除UILabel

// 创建UILabel对象
let label = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
label.text = "Hello World"
label.font = UIFont.systemFont(ofSize: 16)
label.textColor = UIColor.black

// 创建富文本字符串
let attributedString = NSAttributedString(string: label.text ?? "", attributes: [
    NSAttributedString.Key.font: label.font,
    NSAttributedString.Key.foregroundColor: label.textColor
])

// 将富文本字符串赋值给UILabel
label.attributedText = attributedString

// 创建图形上下文
UIGraphicsBeginImageContextWithOptions(label.frame.size, false, 0.0)

// 将UILabel绘制到图形上下文中
label.draw(label.frame)

// 从图形上下文中获取UIImage对象
let image = UIGraphicsGetImageFromCurrentImageContext()

// 结束图形上下文
UIGraphicsEndImageContext()

// 将原始的UILabel对象从父视图中移除
label.removeFromSuperview()