- (void)loadWebPageWithString:(NSString*)urlString{ 
NSURL *url =[NSURL URLWithString:urlString]; 
NSLog(urlString); 
NSURLRequest *request =[NSURLRequest requestWithURL:url]; 
[webView loadRequest:request];}

@interface UIWebViewDemoViewController :UIViewController<UIWebViewDelegate> { 
IBOutlet UIWebView *webView;
IBOutlet UITextField *textField;
UIActivityIndicatorView *activityIndicatorView;
}
- (IBAction)buttonPress:(id) sender;
- (void)loadWebPageWithString:(NSString*)urlString;
@end 

- (void)viewDidLoad{ 
[super viewDidLoad]; 
webView.scalesPageToFit =YES; 
webView.delegate =self; 
activityIndicatorView = [[UIActivityIndicatorView alloc] 
initWithFrame : CGRectMake(0.0f, 0.0f, 32.0f, 32.0f)] ; 
[activityIndicatorView setCenter: self.view.center] ; 
[activityIndicatorView setActivityIndicatorViewStyle: UIActivityIndicatorViewStyleWhite] ; 
[self.view addSubview : activityIndicatorView] ; 
[self buttonPress:nil]; // Do any additional setup after loading the view from its nib.} 

- (void)webViewDidStartLoad:(UIWebView *)webView{ [activityIndicatorView startAnimating] ;}- (void)webViewDidFinishLoad:(UIWebView *)webView{ [activityIndicatorView stopAnimating];} 

- (IBAction)buttonPress:(id) sender
{
[textField resignFirstResponder]; 
[self loadWebPageWithString:textField.text];
}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
UIAlertView *alterview = [[UIAlertView alloc] initWithTitle:@"" message:[error localizedDescription] delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alterview show];
[alterview release];
}