How to safely shut down a loading UIWebView in viewWillDisappear?

Question

I have a view containing a UIWebView which is loading a google map (so lots of javascript etc). The problem I have is that if the user hits the \'back\' button on the nav ba

Answer 1

There's a few ways to handle it, but this should work. You want the didFailLoadWithError message, it's what tells you it's stopped.

Set a flag isLeaving=YES; Send the Webview a stopLoading.

In didFailLoadWithError:, check for the error you get when the webview stops:

if ((thiserror.code == NSURLErrorCancelled) && (isLeaving==YES)) {

[otherClass performSelector:@selector(shootWebview) withObject:nil withDelay:0]

}

release the webView in shootWebview:

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variations: if you want to be cavalier about it, you can do the performSelector:withObject:withDelay: with a delay of [fillintheblank], call it 10-30 seconds without the check and you'll almost certainly get away with it, though I don't recommend it.

You can have the didFailLoadWithError set a flag and clean it up somewhere else.

or my favorite, maybe you don't need to dealloc it all when you leave. Won't you ever display that view container again? why not keep it around reuse it?

Your debug being different from release issue, you might want to check your configuration to make sure that it's exactly the same. Bounty was on the reproducible part of the question, right? ;-).

-- Oh wait a second, you might be taking a whole View container down with the WebView. You can do a variation on the above and wait to release the whole container in shootWebView.