xcode6 swift NSObject AnyObject错误

概述我已经使用了 How to move content of UIViewController upwards as Keypad appears using Swift中的代码来阻止键盘覆盖我的视图. 不知怎的,我无法让它工作(主要是因为我的n00b编程“技能”) 这是我得到的错误：[NSObject：AnyObject]在这行代码中没有名为’valueForKey’的成员：let s：NSVal 我已经使用了 How to move content of UIViewController upwards as Keypad appears using Swift中的代码来阻止键盘覆盖我的视图.

不知怎的,我无法让它工作(主要是因为我的n00b编程“技能”)
这是我得到的错误：[NSObject：AnyObject]在这行代码中没有名为’valueForKey’的成员：let s：NSValue = sender.userInfo.valueForKey(UIKeyboardFrameBeginUserInfoKey)as NSValue;

我想我必须创建某种类型的IBAction,但我尝试的任何工作都没有.我需要做些什么来使代码工作？为什么我必须这样做？ NSObject做什么？

这是代码：

overrIDe func vIEwDIDLoad() {    super.vIEwDIDLoad()    NSNotificationCenter.defaultCenter().addobserver(self,selector: Selector("keyboarDWillShow:"),name:UIKeyboarDWillShowNotification,object: nil);    NSNotificationCenter.defaultCenter().addobserver(self,selector: Selector("keyboarDWillHIDe:"),name:UIKeyboarDWillHIDeNotification,object: nil);}deinit {    NSNotificationCenter.defaultCenter().removeObserver(self);}func keyboarDWillShow(sender: NSNotification) {    let s:NSValue = sender.userInfo.valueForKey(UIKeyboardFrameEndUserInfoKey) as NSValue;    let rect :CGRect = s.CGRectValue();    var frame = self.textFIEld.frame;    frame.origin.y = frame.origin.y - rect.height;    self.textFIEld.frame = frame;}func keyboarDWillHIDe(sender: NSNotification) {    let s:NSValue = sender.userInfo.valueForKey(UIKeyboardFrameBeginUserInfoKey) as NSValue;    let rect :CGRect = s.CGRectValue();    var frame = self.textFIEld.frame;    frame.origin.y = frame.origin.y + rect.height;    self.textFIEld.frame = frame;}

解决方法 您必须将userInfo强制转换为NSDictionary
将以上功能替换为以下功能

func keyboarDWillShow(sender: NSNotification) {    let dict:NSDictionary = sender.userInfo as NSDictionary    let s:NSValue = dict.valueForKey(UIKeyboardFrameEndUserInfoKey) as NSValue;    let rect :CGRect = s.CGRectValue();    var frame = self.textFIEld.frame;    frame.origin.y = frame.origin.y - rect.height;    self.textFIEld.frame = frame;}func keyboarDWillHIDe(sender: NSNotification) {    let dict:NSDictionary = sender.userInfo as NSDictionary    let s:NSValue = dict.valueForKey(UIKeyboardFrameBeginUserInfoKey) as NSValue;    let rect :CGRect = s.CGRectValue();    var frame = self.textFIEld.frame;    frame.origin.y = frame.origin.y + rect.height;    self.textFIEld.frame = frame;}

编辑

//Add this above vIEwDIDLoad    var selecteTextFIEldOriginalY:CGfloat = 0.0;//write in vIEwDIDLoad    overrIDe func vIEwDIDLoad() {        super.vIEwDIDLoad()        NSNotificationCenter.defaultCenter().addobserver(self,name:UIKeyboardDIDShowNotification,object: nil);        NSNotificationCenter.defaultCenter().addobserver(self,name:UIKeyboardDIDHIDeNotification,object: nil);    }//Replace these functions    func keyboarDWillShow(sender: NSNotification) {        let dict:NSDictionary = sender.userInfo as NSDictionary        let s:NSValue = dict.valueForKey(UIKeyboardFrameEndUserInfoKey) as NSValue;        let rect :CGRect = s.CGRectValue();        var frame = self.textFIEld.frame;        selecteTextFIEldOriginalY = frame.origin.y;//Adjust 80 according to your need actually if is for padding and quickTypeVIEw        var offset = (rect.height - ((self.vIEw.frame.height - self.textFIEld.frame.origin.y)+self.textFIEld.frame.size.height))+80;        print(offset)        frame.origin.y = offset>0 ? frame.origin.y - offset : frame.origin.y ;        UIVIEw.animateWithDuration(0.3,animations:{            self.textFIEld.frame = frame;            }        )    }    func keyboarDWillHIDe(sender: NSNotification) {        let dict:NSDictionary = sender.userInfo as NSDictionary        let s:NSValue = dict.valueForKey(UIKeyboardFrameBeginUserInfoKey) as NSValue;        let rect :CGRect = s.CGRectValue();        var frame = self.textFIEld.frame;        frame.origin.y = selecteTextFIEldOriginalY ;        UIVIEw.animateWithDuration(0.3,animations:{            self.textFIEld.frame = frame;            })    }

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