带手势识别器的UITextView-有条件地向前触摸到父视图

保持所有视图处于活动状态(即启用用户交互)。

循环表视图的 gestureRecognisers 数组,并使它们依赖于文本视图的自定义点击手势 requireGestureRecognizerToFail .

如果是静态表视图,则可以在视图中执行此操作。对于动态表视图,请在文本视图单元格的“willDisplayCell”中执行此操作。

试过之后 Swapnil Luktuke's answer (至少在我理解的范围内)没有任何效果,所有可能的组合:

• 实施 UIGestureRecognizerDelegate ,
• 覆盖 UITapGestureRecognizer
• 有条件呼叫 ignore(_:for:) 等等。

(也许在我绝望的时候,我错过了一些显而易见的东西,但谁知道呢……)

部分基于在上找到的代码 this Medium post ,我想到了这个 UITextView

import UIKit

/**
 Detects taps on subregions of its attributed text that correspond to custom,
 named attributes.

 - note: If no tap is detected, the behavior is equivalent to a text view with
 `isUserInteractionEnabled` set to `false` (i.e., touches "pass through"). The
 same behavior doesn't seem to be easily implemented using just stock
 `UITextView` and gesture recognizers (hence the need to subclass).
 */
class LinkTextView: UITextView {

    private var tapHandlersByName: [String: [(() -> Void)]] = [:]

    /**
     Adds a custom block to be executed wjhen a tap is detected on a subregion
     of the **attributed** text that contains the attribute named accordingly.
     */
    public func addTapHandler(_ handler: @escaping(() -> Void), forAttribute attributeName: String) {
        var handlers = tapHandlersByName[attributeName] ?? []
        handlers.append(handler)
        tapHandlersByName[attributeName] = handlers
    }

    // MARK: - Initialization

    override init(frame: CGRect, textContainer: NSTextContainer?) {
        super.init(frame: frame, textContainer: textContainer)
        commonSetup()
    }

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

    override func awakeFromNib() {
        super.awakeFromNib()
        commonSetup()
    }

    private func commonSetup() {
        self.delaysContentTouches = false
        self.isScrollEnabled = false
        self.isEditable = false
        self.isUserInteractionEnabled = true
    }

    // MARK: - UIView

    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        guard let attributeName = self.attributeName(at: point), let handlers = tapHandlersByName[attributeName], handlers.count > 0 else {
            return nil // Ignore touch
        }
        return self // Claim touch
    }

    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesEnded(touches, with: event)

        // find attribute name
        guard let touch = touches.first, let attributeName = self.attributeName(at: touch.location(in: self)) else {
            return
        }

        // Execute all handlers for that attribute, once:
        tapHandlersByName[attributeName]?.forEach({ (handler) in
            handler()
        })
    }

    // MARK: - Internal Support

    private func attributeName(at point: CGPoint) -> String? {
        let location = CGPoint(
            x: point.x - self.textContainerInset.left,
            y: point.y - self.textContainerInset.top)

        let characterIndex = self.layoutManager.characterIndex(
            for: location,
            in: self.textContainer,
            fractionOfDistanceBetweenInsertionPoints: nil)

        guard characterIndex < self.textStorage.length else {
            return nil
        }

        let firstAttributeName = tapHandlersByName.allKeys.first { (attributeName) -> Bool in
            if self.textStorage.attribute(NSAttributedStringKey(rawValue: attributeName), at: characterIndex, effectiveRange: nil) != nil {
                return true
            }
            return false
        }
        return firstAttributeName
    }
}

通常,我会等几天再接受自己的答案,以防万一会有更好的结果出现。。。