Skeyboard.swift

struct SKeyBoard {
    
    // 注冊鍵盤出現(xiàn)
    static func registerKeyBoardShow(target: UIViewController) {
        NSNotificationCenter.defaultCenter().addObserver(target, selector: "keyboardWillShowNotification:", name: UIKeyboardWillShowNotification, object: nil)
    }
    
    // 注冊鍵盤隱藏
   static func registerKeyBoardHide(target: UIViewController) {
        NSNotificationCenter.defaultCenter().addObserver(target, selector: "keyboardWillHideNotification:", name: UIKeyboardWillHideNotification, object: nil)
    }
    
    // 移除鍵盤出現(xiàn)通知
    static func removeKeyboardNotifications(target: UIViewController) {
        NSNotificationCenter.defaultCenter().removeObserver(target, name: UIKeyboardWillShowNotification, object: nil)
    }
    
    // 移除鍵盤隱藏通知
    static func removeKeyboardHideNotifications(target: UIViewController) {
        NSNotificationCenter.defaultCenter().removeObserver(target, name: UIKeyboardWillHideNotification, object: nil)
    }
    
    // 返回鍵盤高度
   static func getKeyboardHeight(notification: NSNotification) -> CGFloat {
        let userInfo = notification.userInfo
        let keyboardSize = userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue
        
        return keyboardSize.CGRectValue().height
    }
    
    // 返回鍵盤上拉動畫持續(xù)時間
   static func getKeyBoardDuration(notification: NSNotification) -> Double {
        let userInfo = notification.userInfo
        let keyboardDuration = userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
        
        return keyboardDuration
    }
    
    // 返回鍵盤動畫曲線
   static func getKeyBoardAnimationCurve(notification: NSNotification) -> NSObject {
        let userInfo = notification.userInfo
        let keyboardTranstionAnimationCurve = userInfo![UIKeyboardAnimationDurationUserInfoKey] as! NSValue
    
        return keyboardTranstionAnimationCurve
    }
    
    
}

使用

1.注冊通知

    SKeyBoard.registerKeyBoardShow(self)
    SKeyBoard.registerKeyBoardHide(self)

2.必須實現(xiàn)以下2個方法，否則程序會崩潰

func keyboardWillShowNotification(notification:NSNotification){
    let rect = SKeyBoard.getKeyboardHeight(notification)
    self.textView.contentInset = UIEdgeInsetsMake(0, 0, rect, 0)
    
}

func keyboardWillHideNotification(notification: NSNotification) {
    self.textView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0)
}