Question

当我尝试在键盘出现时调整textView和按钮的位置时出现问题。

我试过了：

override func viewDidLoad() {
    super.viewDidLoad()
    //...Code here .. //
    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardDidShow:", name: UIKeyboardDidShowNotification, object: nil)
    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardDidHide:", name:UIKeyboardDidHideNotification, object: nil)

}
func keyboardDidShow(notification :NSNotification){
    //println("A aparut")
    print("\(self.messageText.frame.origin)")
    var c = notification.userInfo
    var keyboardInfo = notification.userInfo as NSDictionary
    var keyboardFrameBegin = keyboardInfo.valueForKey(UIKeyboardFrameBeginUserInfoKey).size as CGSize

    // UIView.beginAnimations(nil, context: nil)

    //UIView.setAnimationDuration(0.25);
    //print(" is the height \(self.messageText.frame.height)")
    UIView.animateWithDuration(0 , animations: {
        self.ChatView.frame = CGRectMake(self.ChatView.frame.origin.x, self.ChatView.frame.origin.y , self.ChatView.frame.width, 150 )
        self.sendButton.frame = CGRectMake(self.sendButton.frame.origin.x, self.sendButton.frame.origin.y + keyboardFrameBegin.height, self.sendButton.frame.width , self.sendButton.frame.height)
        self.messageText.frame = CGRectMake(self.messageText.frame.origin.x,self.messageText.frame.origin.y +  keyboardFrameBegin.height ,self.messageText.frame.width,self.messageText.frame.height);
    })

    //UIView.commitAnimations()        
}

当我尝试获取密钥的值时，我得到一个nil错误。

我该怎样用？

替换这一行？

当我尝试对此问题进行硬编码时，我注意到的另一件事[当每个元素出现时为每个元素添加200并且当它消失时减去200]是方法被多次调用。

我的意思是框架越来越远，直到它到达月球。

是模拟器还是什么？

键盘外观后调整视图

0 个答案: