Detect if images have loaded in a UIWebView?

Question

I have a UIWebview that is loading an image. However I am trying to call a method when the image has completed loaded / rendered.

I tried using UIWebViewDelgate and used,

-(void)webViewDidFinishLoad:(UIWebView *)webView {}

However this method is called before the image has loaded / rendered. How can I fix this. Any help would be greatly appreciated.

Josh

I'm using the iPhone SDK. Sorry that I didn't make this clear. — , Mar 30 '10 at 16:08
Has anyone found a solution yet? I am struck with the same problem. — Amarsh, Oct 12 '12 at 10:52

score 1 · Answer 1 · edited May 23 '17 at 11:52

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I think better way is use javascript to call any known url via window.location.href='myurl://imageLoaded' that will be intercepted in webView shouldStartLoadingRequest

there is way to set script for onload event Javascript that executes after page load

edited May 23 '17 at 11:52

Community

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answered Feb 24 '14 at 15:47

sage444

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score 0 · Answer 2 · edited May 23 '17 at 12:31

Unfortunately, the delegate call you mentioned, isn't called for each HTTP request but rather for each page only.

You should be able to get notified when a certain URL request is handled by subclassing NSURLProtocol. There's a related answer that describes how to substitute remote images with local images in a UIWebView. This should give you an idea how to implement your NSURLProtocol subclass.

Detect if images have loaded in a UIWebView?

2 Answers2