Unable to see UIActivityIndicator in UIWebView - iphone

Question

I am new to iPhone developer,
I am loading pages in my webview, loading takes too much time so i wan to show ActivityIndicator till the page loads,
Here is my code snippet but it is not working,
activityIndicator = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
activityIndicator.frame = CGRectMake(200.0, 200.0, 100.0, 40.0);
activityIndicator.center = self.view.center;
[self.view addSubview: activityIndicator];
_webview=[[UIWebView alloc]init];
[_webview setBackgroundColor:[UIColor grayColor]];
[_webview setDelegate:(id<UIWebViewDelegate>)self];
[self.view addSubview:_webview];
[_webview bringSubviewToFront:activityIndicator];
...
- (void)webViewDidStartLoad:(UIWebView *)webView {
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
[activityIndicator startAnimating];
activityIndicator.hidden=FALSE;
}
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
[activityIndicator stopAnimating];
activityIndicator.hidden=TRUE;
}
but i am unable to see my activityIndicator
Any help will be appreciated.

Answer 1

You are adding the UIActivityIndicatorView directly to the self.view and later you are trying to bringSubviewToFront from the UIWebView. Check with:
[self.view bringSubviewToFront:activityIndicator];

Answer 2

Change [_webview bringSubviewToFront:activityIndicator]; to [self.view bringSubviewToFront:activityIndicator];

Answer 3

You can also change the order in which you add subviews. Add the webview first, and then add the activity indicator:
_webview=[[UIWebView alloc]init];
[_webview setBackgroundColor:[UIColor grayColor]];
[_webview setDelegate:(id<UIWebViewDelegate>)self];
[self.view addSubview:_webview];
activityIndicator = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
activityIndicator.frame = CGRectMake(200.0, 200.0, 100.0, 40.0);//you should also keep the height and width equal
activityIndicator.center = self.view.center;
[self.view addSubview: activityIndicator];
And get rid of the line that follows:[_webview bringSubviewToFront:activityIndicator];