How can i know web view is loading completed

问题

i have web view in that i am loading pdf file .

pdf file has 2 mb size so it tacking time. i want to add indicator .

for that how can i know my file is loaded in web view ? ...

回答1:

James P has the right answer (^'ed), but here is the code to show and hide the indicator.

After you've registered with the UIWebViewDelegate...

- (void)webViewDidStartLoad:(UIWebView *)webView {
    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
    // Other stuff...
}

And then

- (void)webViewDidFinishLoad:(UIWebView *)webView {
    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
    // Other stuff...
}

Also you probably want to check for failures and hide the activity indicator there as well...

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {
    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
    // Other stuff...
}

回答2:

UIWebViewDelegate

in particular:

- (void)webViewDidFinishLoad:(UIWebView *)webView

回答3:

first Add the delegate "UIWebViewDelegate", then you can use the below methods.

– webView:shouldStartLoadWithRequest:navigationType: – webViewDidStartLoad: – webViewDidFinishLoad:
– webView:didFailLoadWithError:

回答4:

You could pull your PDF down using ASIHTTPRequest, which would let you set up a progress bar showing real progress, and then feed it to your UIWebView once it's downloaded.

EDIT: ASIHTTPRequest is a free third-party library that provides a MUCH improved interface to iOS HTTP client functions. LOTS of code samples and instructions here: http://allseeing-i.com/ASIHTTPRequest/How-to-use

来源：https://stackoverflow.com/questions/4658227/how-can-i-know-web-view-is-loading-completed

标签

iphone

uiwebview