Loading performance between a UIWebView and Safari is considerably different, any pointers?

I have a UIWebView in an iPhone application I am building. It's job is to load up a URL. The code I use is:

NSURL *url = [NSURL URLWithString:providedURL];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[webView loadRequest:request];

This is in viewDidLoad.

I开发者_StackOverflow中文版 have noticed that it takes around 18 seconds for the page to load in my app....but when using Safari it takes 5-8 seconds. Has anyone run into this issue before? Does it have anything to do with how I'm forming my request?

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It is likely because Safari has cached the resources of the site already. A basic UIWebView does not do any caching by itself. You'll have to implement that yourself. See a question about that here:

How to cache content in UIWebView for faster loading later on?