使用UISearchBar取消键盘，而不辞职第一个响应者 [英] Dismissing the keyboard with UISearchBar, without resigning first responder

问题描述

嘿，我正在iPhone上一个基于导航的应用程序上工作，类似于联系人应用程序。当您在搜索栏中输入内容并在表格（在联系人应用程序中）上滚动时，键盘会消失。我不认为它辞职第一响应，虽然，因为当我尝试，并在 - （void）scrollViewDidScroll：（UIScrollView *）scrollView，它禁用取消按钮，这不会发生在联系人应用程序。

Hey, I was working on a navigation-based app on iPhone similar to the contacts app. When you input something in the search bar, and scroll in the table (in the contacts app), the keyboard goes away. I don't think it resigns first responder though, because when I try and do that in -(void)scrollViewDidScroll:(UIScrollView *)scrollView, it disables the cancel button, which does not happen in the contacts app. Basically my question is how do I dismiss the keyboard without disabling the cancel button, like in the contacts app?

感谢

推荐答案

好吧，刚刚碰到这个老问题。
当您开始滚动时，您可以启用取消按钮，如下所示：

Well, just ran into this very old question. You can enable the 'cancel' button when you start to scroll as follows:

func scrollViewWillBeginDragging(scrollView: UIScrollView) {
    searchBar.resignFirstResponder()
    let searchCancelButton = searchBar.valueForKey("cancelButton") as! UIButton
    searchCancelButton.enabled = true // <-- THIS line is the trick

}

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