ios - 当我向下移动它的 Y 原点时，UIView 容器消失了

Question

我有 UIView，它是按钮“发送”和 textView 的容器。当我开始编辑时，屏幕上有键盘，我更改了容器的 Y 原点以将其移动到更高的位置，而不是被键盘覆盖。

当我完成编辑时，我隐藏了键盘，我的容器(带有按钮和 TextView 的 UIView)就消失了!但是，如果我向右或向左转动模拟器，它就会再次可见。

这是上下移动我的容器的动画代码:

func textViewDidChange(textView: UITextView) {

    self.messagePromptLabel.hidden = messageTextView.hasText() ? true : false

}

func textViewDidEndEditing(textView: UITextView) {
    if !self.messageTextView.hasText()  {
        self.messagePromptLabel.hidden = false
    }
}

func didTapScrollView(){
    self.view.endEditing(true)
}

func keyboardWasShown(notification: NSNotification) {

    let dict: NSDictionary = notification.userInfo!
    let keyboardSize: NSValue = dict.valueForKey(UIKeyboardFrameEndUserInfoKey) as! NSValue
    let frameKeyboardSize: CGRect = keyboardSize.CGRectValue()

    UIView.animateWithDuration(0.3, animations: { () -> Void in
        self.chatScrollView.frame.origin.y -= frameKeyboardSize.height
        self.messageView.frame.origin.y -= frameKeyboardSize.height

        }) { (finished: Bool) -> Void in

    }

}

func keyboardWillHide(notification: NSNotification) {

    UIView.animateWithDuration(0.3, animations: { () -> Void in
        self.chatScrollView.frame.origin.y = self.chatScrollViewOriginY!
        self.messageView.frame.origin.y = self.messageTextViewOriginY!

        }) { (finished: Bool) -> Void in
    }
}

一些额外的代码这段代码可能有助于找出一些东西。

@IBOutlet weak var messageTextView: UITextView!
@IBOutlet weak var chatScrollView: UIScrollView!
@IBOutlet weak var messagePromptLabel: UILabel!
@IBOutlet weak var messageView: UIView!

var chatScrollViewOriginY: CGFloat?
var messageTextViewOriginY: CGFloat?

var messageArray = [String]()
var senderArray = [String]()

var currentUserImage: UIImage?
var recipientImage: UIImage?

override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view.
    messageTextView.addSubview(messagePromptLabel)
    self.title = recipientNickname

    chatScrollViewOriginY = self.chatScrollView.frame.origin.y
    messageTextViewOriginY = self.messageTextView.frame.origin.y
    print(" messageTextViewOriginY \(messageTextViewOriginY)")

    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWasShown:", name: UIKeyboardDidShowNotification, object: nil)

    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillHide:", name: UIKeyboardWillHideNotification, object: nil)

    let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: "didTapScrollView")
    tapGestureRecognizer.numberOfTouchesRequired = 1
    chatScrollView.addGestureRecognizer(tapGestureRecognizer)
    chatScrollView.backgroundColor = UIColor.redColor()
}

func textViewDidChange(textView: UITextView) {

    self.messagePromptLabel.hidden = messageTextView.hasText() ? true : false

}

func textViewDidEndEditing(textView: UITextView) {
    if !self.messageTextView.hasText()  {
        self.messagePromptLabel.hidden = false
    }
}

func didTapScrollView(){
    self.view.endEditing(true)
}

问题:是什么让我的 UIView 容器在我隐藏键盘时始终不可见，而在我向左或向右转动手机时使其可见？

Answer 1

您需要在发送按钮操作中添加以下代码:

self.view.endEditing(true)