webwebView打开超链接

-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType

{

    NSURL *requestURL = [request URL];

    if (([[requestURL scheme] isEqualToString:@"http"]||[[requestURL scheme] isEqualToString:@"https"]||[[requestURL scheme] isEqualToString: @"mailto"])

        && (navigationType == UIWebViewNavigationTypeLinkClicked)){

        return ![[UIApplication sharedApplication] openURL:requestURL];

    }

    return YES;

}