iOS：向容器视图添加UITapGestureRecognizer拦截UICollectionView的didSelectItemAtIndexPath方法 [英] iOS: Adding UITapGestureRecognizer to container view intercepts UICollectionView's didSelectItemAtIndexPath method

问题描述

我在我的ViewController中向我的主内容视图添加了一个 UITapGestureRecognizer ，以便在内容视图时关闭我的键盘轻拍。

I added a UITapGestureRecognizer to my main Content View in my ViewController to dismiss my keyboard when the content view is tapped.

问题是我的内容视图中有一个 UICollectionView ，并设置 UITapGestureRecognizer 拦截我的 UICollectionView 的点击。

The problem is that I have a UICollectionView inside my content view, and setting the UITapGestureRecognizer intercepts the taps of my UICollectionView.

我如何允许我的 UICollectionView 点击一下，以便再次触发 didSelectItemAtIndexPath 方法？

How do I allow my UICollectionView's taps to go through so that the didSelectItemAtIndexPath method will fire again?

func setupGestureRecognizer() {
    let dismissKeyboardTap = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
    contentView.addGestureRecognizer(dismissKeyboardTap)
}

func dismissKeyboard() {
    contentView.endEditing(true)
}

推荐答案

解决此问题的方法是添加 .cancelsTouchesInView = false 到你的 UITapGestureRecognizer 。

The way to solve this issue is by adding .cancelsTouchesInView = false to your UITapGestureRecognizer.

这允许其他视图中的触摸通过，例如a UITableViewCell 触摸。

This allows touches inside other views to go through, such as a UITableViewCell touch.

func setupGestureRecognizer() {
    let dismissKeyboardTap = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
    dismissKeyboardTap.cancelsTouchesInView = false
    contentView.addGestureRecognizer(dismissKeyboardTap)
}

func dismissKeyboard() {
    contentView.endEditing(true)
}

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