Question

我有一个类似于View 1的视图，它有一个UITextView子视图。

我必须在我的textview中启用链接和日期事件，我已在其上启用了用户交互。但是我需要在它的超级视图上进行一些轻击处理，即视图1，所以我在超级视图上也启用了轻击手势。

使用此设置，我将在文本视图中获得链接检测和处理，如果我没有点击链接，则点按手势将自动传递到超级视图。然而，在iOS 11中，这似乎被破坏了，我似乎永远不会将轻击手势传递给超级视图。有人可以帮我在iOS 11上恢复与以前版本相同的行为。

我写的代码是这样的 -

  [V addSubView:tv];
  [tv setFrame:[self calculateFrameForTextView]];
  [tv setUserInteractionEnabled:YES];
  [tv setEditable:NO];
  [tv setSelectable:YES];
  [tv setDataDetectorTypes:UIDataDetectorTypeAll];

  UITapGestureRecognizer *tap= [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doSomething)];
  [V addGestureRecognizer:tap];


   ............................
   |    UIView (V)             |
   |                           |
   |   |-------------------|   |
   |   |  UITextView  (tv) |   |
   |   |...................|   |
   .............................

如果我点击文本视图中不是链接/其他数据检测器类型的任何内容，我希望将“doSomething”调用为在超级视图上点击注册的选择器。此行为在版本＆lt; iOS11

Answer 1

我终于找到了一种从iOS 11中的文本视图检测触摸的解决方案，尚未在较早版本上进行测试。
点击链接或附件不会触发关闭。

/// Provide a callback when single tapping on a non-attachment area
@IBDesignable class UITextViewFixed: UITextView {

    var didTappedOnAreaBesidesAttachment: (() -> ())? = nil

    // A single tap won't move.
    private var isTouchMoved = false

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

        isTouchMoved = true
    }

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

        if !isTouchMoved &&
            !isTapOnAttachment(touches.first!.location(in: self)) &&
            selectedRange.length == 0 {
            didTappedOnAreaBesidesAttachment?()
        }

        isTouchMoved = false
    }

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

        // `UITextView` will cancel the touch then starting selection

        isTouchMoved = false
    }

    private func isTapOnAttachment(_ point: CGPoint) -> Bool {
        let range = NSRange(location: 0, length: attributedText.length)
        var found = false
        attributedText.enumerateAttribute(.attachment, in: range, options: []) { (value, effectiveRange, stop) in
            guard value is NSTextAttachment else {
                return
            }
            let rect = layoutManager.boundingRect(forGlyphRange: effectiveRange, in: textContainer)
            if rect.contains(point) {
                found = true
                stop.pointee = true
            }
        }
        return found
    }
}

点击TextView上的手势及其超级视图在iOS 11中不起作用

1 个答案: