这是我到目前为止尝试过的方法funconKeyboardRaise(notification:NSNotification){varnotificationData=notification.userInfovarduration=notificationData[UIKeyboardAnimationDurationUserInfoKey]asNSNumbervarframe=notificationData[UIKeyboardFrameBeginUserInfoKey]!asNSValuevarframeValue:UnsafePointer=nil;frame.getValue