create a InApp browser implementation in iOS app

Question

I have a requirement were in i have to create a view to display webpages with back, forward and refresh button in iOS app. how to implement this functionality?

Answer 1

Use UIWebView. Set the delegate to the view controller.

self.webView.delegate = self;

Other remarkable properties,

self.webView.scalesPageToFit = YES;

To load a URLRequest,

[self.webView loadRequest:theRequest];

or for only strings, use

[self.webView loadHTMLString:htmlString baseURL:nil];

And some delegates here. web view has its own history, you can use it by calling its back and forward methods.

#pragma mark - UIWebView delegate

// You can handle your own url scheme or let the web view handle it.
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request
        navigationType:(UIWebViewNavigationType)navigationType
{
    NSLog(@"url=%@, %@, %@",
          request.URL, request.URL.query, request.URL.host);

    if (navigationType == UIWebViewNavigationTypeLinkClicked) {     
        if ([request.URL.scheme compare:@"customescheme"] == NSOrderedSame) {
            if ([request.URL.host compare:kSomethingDotCom] == NSOrderedSame) {
                [self mymethod];
            } else if ([request.URL.host compare:kAnotherDotCom] == NSOrderedSame) {
                [self method2];
            } else {
                NSLog(@"Unsupported service.");
            }
            return NO;
        }
    }
    return YES;
}

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    [_activityIndicator stopAnimating];
}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
    [_activityIndicator stopAnimating];
    [Resources showAlert:@"Could not load." withTitle:@"Error!"];
    NSLog(@"%@", [error localizedDescription]);
}

#pragma mark - Actions

- (IBAction)didPressBackButton:(id)sender
{
    [_webView goBack];
}

- (IBAction)didPressForwardButton:(id)sender
{
    [_webView goForward];
}

Similarly you can have the stop method. To refresh reload the request again. Before going back or forward you can check the methods canGoBack or canGoForward. See docs at, http://developer.apple.com/library/ios/#documentation/uikit/reference/UIWebView_Class/Reference/Reference.html