使用IBInspectable禁用UITextField上的剪切、复制和粘贴

Question

请看以下代码，但对我无效。

 @IBInspectable var pasteOption: Bool = true {
        didSet {
            func canPerformAction(action: Selector, withSender sender: AnyObject) -> Bool {
                if action == "selectAll:" {
                    return pasteOption
                }
                if action == "select:" {
                    return pasteOption
                }
                if action == "cut:" {
                    return pasteOption
                }
                if action == "copy:" {
                    return pasteOption
                }
                if action == "paste:" {
                    return pasteOption
                }
                return super.canPerformAction(action, withSender: sender)
            }
        }
    }

我想使用IBInspectable禁用UITextfield的剪切、复制、粘贴功能。

- Janak Thakkar

---

这段代码属于哪个类？ - bcamur

分离 UITextField https://github.com/JanakLN/TextField---IBDesignable - Janak Thakkar

Answer 1

你需要像这样定义你的变量：

@IBInspectable var pasteOption: Bool = true

然后像这样重写你的 UITextField 的 canPerformAction 函数：

override func canPerformAction(action: Selector, withSender sender: AnyObject?) -> Bool {
    if action == "selectAll:" {
        return pasteOption
    }
    if action == "select:" {
        return pasteOption
    }
    if action == "cut:" {
        return pasteOption
    }
    if action == "copy:" {
        return pasteOption
    }
    if action == "paste:" {
        return pasteOption
    }
    return super.canPerformAction(action, withSender: sender)
}

通过这样做，您可以为函数中定义的特定操作（在本例中为selectAll、select、cut、copy和paste）返回pasteOption的值，每当您的文本字段打开编辑菜单时。

- bcamur