键盘事件使工具栏项无法点击

Question

在一个视图中，我想在键盘出现时使textView和工具栏上升，但是我有一些问题，因为在移动它们之后。问题是工具栏上的按钮不能再被按下了

我必须提一下，我在视图中添加了这两个项目[在viewController中 - 页面的主视图]

以下是我的尝试：

func keyboardDidShow(notification :NSNotification){
    var c = notification.userInfo as NSDictionary

    var point:NSValue = NSValue(nonretainedObject: c.objectForKey(UIKeyboardFrameEndUserInfoKey))
    let s:NSValue = c.valueForKey(UIKeyboardFrameEndUserInfoKey) as NSValue;
    let rect :CGRect = s.CGRectValue();


    var frame = self.messageText.frame
    var toolbarFrame = self.toolbar.frame
    var textFrame = self.textfieldFrame.frame

    var offset = (rect.height - ((self.view.frame.height - self.messageText.frame.origin.y) + self.messageText.frame.size.height)) + 80

    //frame is the frame of the textview toolbarframe of the toolbar and textframe of the view
    frame.origin.y = self.messageText.frame.origin.y - rect.height
    toolbarFrame.origin.y = self.toolbar.frame.origin.y - rect.height
    textFrame.origin.y = self.textfieldFrame.frame.origin.y - rect.height

    UIView.animateWithDuration(0.3, animations: {
        self.messageText.frame = frame
        self.toolbar.frame = toolbarFrame
        self.toolbar.multipleTouchEnabled = true
        var items = self.toolbar.items
        for item  in items {
            var button :UIBarButtonItem = item as UIBarButtonItem

        }
    })
    UIView.commitAnimations()
}

你能解释一下我在这里做错了吗？