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copied!<p>Try allocation of <code>HUD</code> on the <code>viewWillAppear:</code> instead of <code>-(IBAction)save</code> because sometimes allocation takes up the whole time and by the time it allocates whole task is finished.</p> <p>Copy Following links to <code>viewWillAppear:</code> and remove them from <code>-(IBAction)save</code></p> <pre><code> HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view]; [self.navigationController.view addSubview:HUD]; HUD.delegate = self; HUD.labelText = @"Saving..."; </code></pre> <p><strong>EDIT:</strong> Keep allocations on <code>viewWillAppear:</code> and change code as shown below:</p> <pre><code>- (IBAction)save { [NSThread detachNewThreadSelector:@selector(showHUD) withObject:nil]; [self performSelectorOnMainThread:@selector(savingPage) withObject:nil waitUntilDone:YES]; } - (void) savingPage{ NSString *title = [page stringByEvaluatingJavaScriptFromString:@"document.title"]; SavePageAs *savePage = [[SavePageAs alloc] initWithUrl:self.site directory:title]; [savePage save]; [HUD hide:YES]; } -(void)showHUD { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; [HUD show:YES]; [pool release]; } </code></pre> <p>What this will do is create a separate thread to display HUD as main thread is being engaged by savingPage method.</p> <p>If this too doesn't work, then just change <code>waitUntilDone:YES</code> to <code>waitUntilDone:NO</code></p> <p><strong>Note:</strong> As per <a href="https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSAutoreleasePool_Class/Reference/Reference.html#//apple_ref/doc/uid/20000051-1722" rel="noreferrer">Apple documentation</a></p> <blockquote> <p>Important If you use Automatic Reference Counting (ARC), you cannot use autorelease pools directly. Instead, you use @autoreleasepool blocks instead. For example, in place of:</p> <pre><code>NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init; // Code benefitting from a local autorelease pool. [pool release]; </code></pre> <p>you would write:</p> <pre><code>@autoreleasepool { // Code benefitting from a local autorelease pool. } </code></pre> <p>@autoreleasepool blocks are more efficient than using an instance of NSAutoreleasePool directly; you can also use them even if you do not use ARC.</p> </blockquote> <p>Hope this helps.</p>

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