Swift 文本编辑时将文本框上移

  func textFieldShouldBeginEditing(textField: UITextField) -> Bool {
        
        NSLog("将要开始编码")
        var offset : CGFloat = CGFloat(self.view.frame.size.height) - CGFloat(self.txt_phone.frame.origin.y) - CGFloat(self.txt_phone.frame.size.height) - 216 - 50
        if(offset <= 0)
        {
            UIView.animateWithDuration(0.3,animations: {
                var frame : CGRect = self.view.frame
                frame.origin.y = offset
                self.view.frame = frame
            })
        }
        return true
    }
    func textFieldDidEndEditing(textField: UITextField) {
        
        UIView.animateWithDuration(0.3,animations: {
            var frame : CGRect = self.view.frame
            frame.origin.y = 0
            self.view.frame = frame
        })
    }

（编辑：李大同）

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