UIWebView加载Loading效果

UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];[view setTag:103];[view setBackgroundColor:[UIColor blackColor]];[view setAlpha:0.8];[self.view addSubview:view];UIActivityIndicatorView *activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 32.0f, 32.0f)];[activityIndicator setCenter:view.center];[activityIndicator setActivityIndicatorViewStyle:UIActivityIndicatorViewStyleWhite];[view addSubview:activityIndicator];[view release];

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UIWebView需要指定自己为Delegate

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//开始加载数据- (void)webViewDidStartLoad:(UIWebView *)webView {    [activityIndicator startAnimating];         }//数据加载完- (void)webViewDidFinishLoad:(UIWebView *)webView {[activityIndicator stopAnimating];    UIView *view = (UIView *)[self.view viewWithTag:103];[view removeFromSuperview];}

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