UIWebview initial zoom position using UIScrollView zoomToRect?

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I have a UIWebView that is used to display an SVG image to the user. When the image has finished loading, I wish to zoom to the bottom right hand quarter of the image (so I am trying to zoom to a rectangle defined by the middle of the UIScrollView's content and half of its height and width). However, the following code seems to zoom somewhere else in the image (towards the top) and I don't know why.

In the . H file: UIWebView *webView; UIScrollView * scrollView; In the . M file: - (void)viewDidLoad { super viewDidLoad; self loadTheSVGImage; // this will load an appropriate image // scrollview will now refer to the UIScrollView within the UIWebView scrollView = webView subviews objectAtIndex:0; } - (void)webViewDidFinishLoad:(UIWebView *)theWebView { scrollView zoomToRect:CGRectMake(scrollView.contentSize.

Width / 2.0, scrollView.contentSize. Height / 2.0, scrollView.contentSize. Width / 2.0, scrollView.contentSize.

Height / 2.0) animated:YES; } webViewDidFinishLoad is called correctly. Can anyone tell me what I am doing wrong please and how I can make the zoom work as it should? Uiwebview uiscrollview svg zoom link|improve this question asked Apr 27 '11 at 10:50user2720231058 57% accept rate.

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