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()
      }
      
  }