iPhone UIWebView loadHtmlString not added to history
back, ios, iphone, uiwebview
Solution
I had a same problem. I tried manage the history, but it is error prone. Now I have discovered a better solution of this.
What you want to do is simply add a loadRequest to about:blank and make that as a placeholder for you before you call loadHTMLString/loadData. Then you are totally free from monitoring the history. The webview.canGoBack and canGoForward will just work. Of course, you will need a hack to handle go back to the placeholder about:blank. You can do that in webViewDidFinishLoad. Here is the code highlight:
In the function when you call loadHTMLString:
[weakSelf.fbWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"about:blank"]]];
[weakSelf.fbWebView loadHTMLString:stringResponse baseURL:url];
Code to handle goBack:
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
if ([webView.request.URL.absoluteString isEqualToString:@"about:blank"]
&& ![webView canGoBack] && [webView canGoForward]) {
[weakSelf.fbWebView loadHTMLString:stringResponse baseURL:url];
}
}
I think it is also possible expand this solution to handle those loadHTMLString that is not the first load. Just by having a Stack to record all the string response and insert an about:blank on each loadHTMLString. And pop the stack when each time go back to about:blank.
Problem
My `UIWebview` loads a local html file using loadHtmlString. The loaded page has links to other local html files as well as real links that use the internet. I have added a back button with: if ([self.webView canGoBack]) [self.webView goBack]; This works fine except it does not recognise the original page loaded with loadHtmlString. For example, if I navigate: local -> local -> web local X local <- web (The first back works, the next does nothing.) How can I get the webview to recognise the original page so the back button also works for it? Can I add it to the webview's history somehow? Thanks in advance!