我有一个SKLabelNode,我使用不可见的UITextField进行更新。因此,当用户在键盘中键入内容时,标签会更改为该字符串。以下代码是我正在使用的代码。它在iOS模拟器中工作得很好,但是当我在手机上运行时,每次输入一个字符时UITextField都是空的,所以字符串永远不会变长。我错过了什么?
var inputTextField = UITextField(frame: CGRectMake(0, 0, 100, 30))
var inputTextLabel = SKLabelNode(fontNamed:"Thonburi")
override func didMoveToView(view: SKView) {
inputTextLabel.text = "";
inputTextLabel.fontSize = 25;
inputTextLabel.position = CGPoint(x:10, y:CGRectGetMidY(self.frame));
inputTextLabel.horizontalAlignmentMode = SKLabelHorizontalAlignmentMode.Left
self.addChild(inputTextLabel)
inputTextField.delegate = self
inputTextField.hidden = true
inputTextField.becomeFirstResponder()
self.inputTextField.keyboardType = UIKeyboardType.ASCIICapable
self.view?.addSubview(inputTextField)
}
func textField (textField: UITextField, shouldChangeCharactersInRange range:NSRange, replacementString string: NSString){
var newString = (textField.text as NSString).stringByReplacingCharactersInRange(range, withString: string)
inputTextLabel.text = newString
}
答案 0 :(得分:0)
我想通了,textField函数应该像这样返回一个bool
func textField (textField: UITextField, shouldChangeCharactersInRange range:NSRange, replacementString string: NSString) -> Bool {
var newString = (textField.text as NSString).stringByReplacingCharactersInRange(range, withString: string)
inputTextLabel.text = newString
return true
}