Avoid keyboard closing when iPhone rotated XCode Swift

问题

I have in left navigation item UITextField. When I type something in there and rotate device, keyboard hides everytime.

I tried to handle UIKeyboardWillHideNotification, but all what I got is: keyboard closes and shows again after that. It's not good, I need to rotate keyboard along with view...

Please help in Swift 2.

回答1:

Okay, I found the solution! First, need to implement delegate:

ViewController: UIViewController, UITextFieldDelegate

Next, add to viewDidLoad method:

override func viewDidLoad() {
    super.viewDidLoad()
    textField.delegate = self
}

To the end, realise textFieldShouldEndEditing function:

func textFieldShouldEndEditing(textField: UITextField) -> Bool {
    //here we can add some if-block for orientation change or smth else
    return false
}

回答2:

override func willRotateToInterfaceOrientation(toInterfaceOrientation: UIInterfaceOrientation, duration: NSTimeInterval) {
    textField.becomeFirstResponder()
}

The method above here gets called when the device will rotate, as you don't care about the orientation we don't check it and simple instruct the textfield you are editing to become first responder.

来源：https://stackoverflow.com/questions/33965218/avoid-keyboard-closing-when-iphone-rotated-xcode-swift