IOS swift3 键盘

ios swift3 键盘高度获取

        NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillShow(_:)), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillHide(_:)), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
        //deinit 的时候remove 下

处理

    func keyboardWillShow(_ sender:Notification){
        // 获取键盘高度
        let userInfo = sender.userInfo
        if userInfo == nil{
         return
        }
        let value:NSValue = userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue
        let keyBoardRect = value.cgRectValue
        let height = keyBoardRect.size.height
        
    }
    func keyboardWillHide(_ sender:Notification){
     // 隐藏了. 高度自然为0
    }

oc 版本

- (void)viewDidLoad
{
    [super viewDidLoad];

    //增加监听，当键盘出现或改变时收出消息
    [[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardWillShow:)
                                             name:UIKeyboardWillShowNotification
                                           object:nil];

    //增加监听，当键退出时收出消息
    [[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardWillHide:)
                                             name:UIKeyboardWillHideNotification
                                           object:nil];    
}

 //当键盘出现或改变时调用
- (void)keyboardWillShow:(NSNotification *)aNotification
{
    //获取键盘的高度
    NSDictionary *userInfo = [aNotification userInfo];
    NSValue *aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];
    CGRect keyboardRect = [aValue CGRectValue];
   int height = keyboardRect.size.height;
}

//当键退出时调用
- (void)keyboardWillHide:(NSNotification *)aNotification{}

//键盘上面view 自动位置

NotificationCenter.default.addObserver(self, selector: #selector(self.keybordFrameChange(_:)), name: NSNotification.Name.UIKeyboardWillChangeFrame, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(self.keybordHid(_:)), name: NSNotification.Name.UIKeyboardWillHide, object: nil)

 func keybordHid(_ sender:Notification){
         var info = (sender as NSNotification).userInfo //as? NSDictionary
         let keyboardDuration = (info?[UIKeyboardAnimationDurationUserInfoKey] as AnyObject).doubleValue ?? 0
        self.inputDefaultView.mas_updateConstraints { (make) in
            make?.bottom.mas_equalTo()(self.view)
        }
        UIView.animate(withDuration: keyboardDuration) {
            self.view.layoutIfNeeded()
        }
    }
    func keybordFrameChange(_ sender :Notification){
        var keyHeight:CGFloat = 246
        var info = (sender as NSNotification).userInfo //as? NSDictionary
        let keyboardSize = (info?[UIKeyboardFrameEndUserInfoKey] as AnyObject).cgRectValue //UIKeyboardFrameEndUserInfoKey  UIKeyboardFrameBeginUserInfoKey ,, begin的位置会有差距, 结束的最终的才是ok 的
        let keyboardDuration = (info?[UIKeyboardAnimationDurationUserInfoKey] as AnyObject).doubleValue ?? 0
        if keyboardSize != nil{
            keyHeight = (keyboardSize!.height)
            
        }
        
        self.inputDefaultView.mas_updateConstraints { (make) in
            make?.bottom.mas_equalTo()(self.view)?.offset()(-keyHeight)
        }
        UIView.animate(withDuration: keyboardDuration) {
            self.view.layoutIfNeeded()
        }
    
    }

//原本用这个 但是发现有时候位置不对, 换上面的

 func keyBoardWillShow(_ note:Notification)
   {
       
       if (note as NSNotification).userInfo == nil{
           return
       }
       let userInfo  = (note as NSNotification).userInfo! as NSDictionary
       let  keyBoardBounds = (userInfo[UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
       let duration = (userInfo[UIKeyboardAnimationDurationUserInfoKey] as! NSNumber).doubleValue
       
       //  let keyBoardBoundsRect = self.view.convertRect(keyBoardBounds, toView:nil)
       
       //        let keyBaoardViewFrame = inputeView.frame
       let deltaY = keyBoardBounds.size.height
       
       self.inputeDefaultView.isHidden = false
       self.view.bringSubview(toFront: self.inputeDefaultView)
       let animations:(() -> Void) = {
           
           self.inputeDefaultView.transform = CGAffineTransform(translationX: 0,y: -deltaY)
       }
       
       if duration > 0 {
           let options = UIViewAnimationOptions(rawValue: UInt((userInfo[UIKeyboardAnimationCurveUserInfoKey] as! NSNumber).intValue << 16))
           
           UIView.animate(withDuration: duration, delay: 0, options:options, animations: animations, completion: nil)
           
           
       }else{
           
           animations()
       }
       
       
   }
   
   func keyBoardWillHide(_ note:Notification)
   {
       
       if (note as NSNotification).userInfo == nil{
           return
       }
       let userInfo  = (note as NSNotification).userInfo! as NSDictionary
       
       let duration = (userInfo[UIKeyboardAnimationDurationUserInfoKey] as! NSNumber).doubleValue
       
       
       let animations:(() -> Void) = {
           
           self.inputeDefaultView.transform = CGAffineTransform.identity
           
       }
       
       if duration > 0 {
           let options = UIViewAnimationOptions(rawValue: UInt((userInfo[UIKeyboardAnimationCurveUserInfoKey] as! NSNumber).intValue << 16))
           
           UIView.animate(withDuration: duration, delay: 0, options:options, animations: animations, completion: nil)
           UIView.animate(withDuration: duration, delay: 0, options: options, animations: animations, completion: { [weak self](bool) in
               if let weakSelf = self{
                   weakSelf.inputeDefaultView.isHidden = true
               }
           })
           
           
       }else{
           
           animations()
       }
       
   }