How to goBack/goForward to a specified location in IOS?
my game is based on UIWebView,I want to go back the previous location,so i can invoke 
[XXX goBack] method directly. but sometimes, the history location is not valid,so I want to
skip unvalid location, how to do it? how to get goBackorForwardList?

Thanks in advance

How to goBack/goForward to a specified location in IOS?
===

my game is based on UIWebView,I want to go back the previous location,so i can invoke 
[XXX goBack] method directly. but sometimes, the history location is not valid,so I want to
skip unvalid location, how to do it? how to get goBackorForwardList?

Thanks in advance
