ios - 如何关闭导航栏中文本字段调用的键盘？

Question

我知道如何关闭键盘，我使用这个扩展:

extension UIViewController
{
    func hideKeyboardWhenTappedAround()
    {
        let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
        view.addGestureRecognizer(tap)
    }
    
    func dismissKeyboard()
    {
        view.endEditing(true)
    }
}

并在viewDidLoad中调用hideKeyboardWhenTappedAround

但我现在的问题是我向 navigationBar 添加了 UITextField，并且此扩展不再起作用!

这就是我添加 UITextField 的方式:

    let textField = UITextField(frame: CGRectMake(0,0,textfieldW,0.8*ram.navigationBarHeight) )
    textField.borderStyle = UITextBorderStyle.RoundedRect
    textField.center.y = centerView.center.y
    centerView.addSubview(textField)
    self.navigationItem.titleView = centerView

如何关闭从潜伏在导航栏中的 UITextField 带来的键盘？

Answer 1

引用此文本字段，例如:

var navigationBarField : UITextField?

然后初始化它:

navigationBarField = UITextField(frame: CGRectMake(0,0,textfieldW,0.8*ram.navigationBarHeight) )
textField.borderStyle = UITextBorderStyle.RoundedRect
textField.center.y = centerView.center.y
centerView.addSubview(navigationBarField)
self.navigationItem.titleView = centerView

当你想删除键盘调用时:

navigationBarField?.resignFirstResponder()