我想要本机iOS在UILabel上复制并粘贴UI [英] I want native iOS copy and paste UI on UILabel

问题描述

我想创建iOS提供的本机复制和粘贴体验，当您点击并按住UITextField时-我希望它在UILabel而不是UITextField上运行.

I want to create the native Copy and Paste experience that iOS provides when you tap and hold a UITextField - but I want it to work on a UILabel instead of a UITextField.

这是可能的，还是仅适用于UITextField的东西? 我是否需要创建自己的自定义UI并在UIPasteboard中搞乱，还是有一个更雄辩的解决方案?

Is this possible, or is it something that only works with UITextField? Would I need to create my own custom UI and mess around in UIPasteboard or is there a more eloquent solution?

这是一个典型示例，尽管它通常还会显示放大的圆圈:

Here is a typical example, although it normally also shows the zoomed in circle:

推荐答案

很难在标签上执行标准的复制菜单.或者也许那时我尝试了但没有成功.因此，我刚刚实施了完整的复印解决方案.我做了下面的事情-

It is difficult to do the standard copy menu on the label. Or maybe at that time I tried but didnt succeed. So I just implemented a complete copy solution. I did it something like below -

import UIKit

class KGCopyableLabel: UILabel {

    override public var canBecomeFirstResponder: Bool {
        get {
            return true
        }
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        setup()
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        setup()
    }

    func setup() {
        isUserInteractionEnabled = true
        addGestureRecognizer(UILongPressGestureRecognizer(
            target: self,
            action: #selector(showCopyMenu(sender:))
        ))
    }

    override func copy(_ sender: Any?) {
        UIPasteboard.general.string = text
        UIMenuController.shared.setMenuVisible(false, animated: true)
    }

    func showCopyMenu(sender: Any?) {
        becomeFirstResponder()
        let menu = UIMenuController.shared
        if !menu.isMenuVisible {
            menu.setTargetRect(bounds, in: self)
            menu.setMenuVisible(true, animated: true)
        }
    }

    override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
        return (action == #selector(copy(_:)))
    }
}

然后，您可以简单地将Label拖放到Storyboard中，并将其设置为 KGCopyableLabel 类型，它应该可以工作

You can then simple drag drop the Label in Storyboard and make it of the type KGCopyableLabel and it should work

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