CODEWITHSUNDEEP
objective-cuiwebviewwebviewloaddata
dev.yefeng
dev.yefeng

Reputation: 51

UIWebView goBack problem

I load my html data like this:

[webView loadData:htmlData MIMEType:@"text/html" textEncodingName:@"UTF-8" baseURL:url];

But when called:

[WebView goBack];

webView can not go back to that html page.

What should I do ? I appritiate any respond.

Upvotes: 0

Views: 4938

Answers (3)

fir
fir

Reputation: 387

If your initial page in UIWebView is not remote page (like www.yahoo.com) but just a local html file, after clicking any link in this first page you will be redirected, but goBack method will became unavailable for going back to the first initial page (html file). You can use little hack for do this. The UIWebView have a readonly BOOL parameter canGoBack, which is indicates a possibility to going back. It usually used to disable/enable "go back" button. I am using something like this:

- (void) userPressedGoBackButton {
    if ([self.webView canGoBack]) {
            [self.webView goBack];
        } else {
            [self.webView loadData:htmlData MIMEType:@"text/html" textEncodingName:@"UTF-8" baseURL:url];
    }
}

Upvotes: 2

Luke Lu
Luke Lu

Reputation: 1

I had the same question. The solution for myself is to create a button to go back to cached html data page. This button calls a method, which is also called in viewDidLoad to initialise the webview.

My case is loading a rss data from a website, then create html string, which is displayed with webview using loadHTMLString. There are some links on this html page, after clicking the links, the goback button works properly, but cannot go to the first page - the rss displayed page.

Upvotes: 0

Ahmad Kayyali
Ahmad Kayyali

Reputation: 8243

Please try something like this:

 NSString *urlAddress = @"http://www.stackoverflow.com";

 NSURL *url = [NSURL URLWithString:urlAddress];

 NSURLRequest *requestObj = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60];

 [self.webview loadRequest:requestObj];

and then try your back navigation:

 [self.webview goBack];

Upvotes: -1

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