swift - 向 UITextField 添加顶部填充

Question

我正在尝试将顶部填充添加到文本字段，但找不到任何有用的东西，所有解决方案都是关于我已经知道的左右填充。为了清楚起见，我想让它像下图一样。

注意:我为“描述”使用了标签，并将其放在文本字段中，但标签和输入重叠了。

Text Field Design

Answer 1

使用自定义文本字段类

class CustomTextField: UITextField {

    let padding = UIEdgeInsets(top: 15, left: 0, bottom: 0, right: 0);

    override func textRect(forBounds bounds: CGRect) -> CGRect {
        return UIEdgeInsetsInsetRect(bounds, padding)
    }

    override func placeholderRect(forBounds bounds: CGRect) -> CGRect {
        return UIEdgeInsetsInsetRect(bounds, padding)
    }

    override func editingRect(forBounds bounds: CGRect) -> CGRect {
        return UIEdgeInsetsInsetRect(bounds, padding)
    }
}

Swift 4 版本，根据下面 Micah 的回答:

class CustomTextField: UITextField {

    let padding = UIEdgeInsets(top: 15, left: 0, bottom: 0, right: 0);

    override func textRect(forBounds bounds: CGRect) -> CGRect {
        return bounds.inset(by: padding)
    }

    override func placeholderRect(forBounds bounds: CGRect) -> CGRect {
        return bounds.inset(by: padding)
    }

    override func editingRect(forBounds bounds: CGRect) -> CGRect {
        return bounds.inset(by: padding)
    }
}