【workaround解决】Swift中键盘显示时tableview添加新的行后新添行只显示部分内容

    func keyboardWillShow(notification: NSNotification) {
        if let userInfo = notification.userInfo {
            print("userInfo=\(userInfo)")
            if let originKeyboardFrameEnd:CGRect = userInfo[UIKeyboardFrameEndUserInfoKey]?.CGRectValue {
//                if let infoNSValue = userInfo[UIKeyboardFrameBeginUserInfoKey] as? NSValue {
                print("originKeyboardFrameEnd=\(originKeyboardFrameEnd)")

                UIView.beginAnimations(nil, context: nil)
                UIView.setAnimationBeginsFromCurrentState(true)
                UIView.setAnimationDuration(FloatKeyboardShowAndHideAnimationTime)

                chatView.frame = CGRectMake(
                    0,
                    0,//statusBarFrame.height + HeightNaviBar,
                    self.view.frame.width,
                    //                        UIScreen.mainScreen().bounds.height //667
                    //                            – statusBarFrame.height //20
                    //                            – HeightNaviBar //44
                    //                            – convertedKeyboardFrameEnd.height
                    convertedKeyboardFrameEnd.origin.y
                )
                print("after change: chatView.frame=\(chatView.frame)")

                //table view scroll
                //let convertedRect = messageTableView.convertRect(inputMessageTextField.bounds, fromView: inputMessageTextField)
//                let toolbarInChatViewRect = messageTableView.convertRect(inputMessageToolbar.bounds, fromView: inputMessageToolbar)
//                print("toolbarInChatViewRect=\(toolbarInChatViewRect)") //(0.0, 559.0, 375.0, 44.0)
//                messageTableView.scrollRectToVisible(toolbarInChatViewRect, animated: false)
//                messageTableView.scrollRectToVisible(convertedKeyboardFrameEnd, animated: true)

                //convertedKeyboardFrameEnd.height = 216
                let paddingForFixBug:CGFloat = 20
                //workaround for bug:
                //uitableview – iOS 8 Auto cell height – Can’t scroll to last row – Stack Overflow
                //http://stackoverflow.com/questions/25686490/ios-8-auto-cell-height-cant-scroll-to-last-row
//                print("messageTableView.contentInset=\(messageTableView.contentInset)") //UIEdgeInsets(top: 0.0, left: 0.0, bottom: 0.0, right: 0.0)
                let paddingContentInsets:UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, paddingForFixBug, 0.0)
                messageTableView.contentInset = paddingContentInsets
//                print("messageTableView.contentInset=\(messageTableView.contentInset)") //UIEdgeInsets(top: 0.0, left: 0.0, bottom: 20.0, right: 0.0)

                //self.view.layoutIfNeeded()

                UIView.commitAnimations()
            }
        }
    }

    func keyboardWillHide(notification: NSNotification) {
        if let userInfo = notification.userInfo {
            print("userInfo=\(userInfo)")
            if let originKeyboardFrameEnd:CGRect = userInfo[UIKeyboardFrameEndUserInfoKey]?.CGRectValue {
                //                if let infoNSValue = userInfo[UIKeyboardFrameBeginUserInfoKey] as? NSValue {
                print("originKeyboardFrameEnd=\(originKeyboardFrameEnd)")

                UIView.beginAnimations(nil, context: nil)
                UIView.setAnimationBeginsFromCurrentState(true)
                UIView.setAnimationDuration(FloatKeyboardShowAndHideAnimationTime)

                let convertedKeyboardFrameEnd:CGRect = self.view.convertRect(originKeyboardFrameEnd, fromView: nil)
                print("convertedKeyboardFrameEnd=\(convertedKeyboardFrameEnd)")
                //let contentInsets = UIEdgeInsetsMake(0.0, 0.0, convertedKeyboardFrameEnd.height, 0.0)
                print("before change: chatView.frame=\(chatView.frame)")
                chatView.frame = originChatViewFrame
                print("after change: chatView.frame=\(chatView.frame)")

                UIView.commitAnimations()
            }
        }