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POHow to tell if user pressed back or done?
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  1. POHow to tell if user pressed back or done?
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    copied!<p>I have a 'Create new event' page where the user can click 'Back' on the UINavigationController or 'Done' to create a new event. Both leads to the same page afterwards. </p> <p>If my user presses "Done" the current object kept at the controller is saved via saveChanges. However, if the user has decided to abandon this even he/she is editing, I need to clean up static files generated by this user during this lifetime of this event. </p> <p>My only problem is that there is no way for me to differentiate a user from pressing 'Done' or 'Cancel'. </p> <pre><code>- (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; // If user has left this page by either pressing 'Done' or 'Cancel' if (![[self.navigationController viewControllers] containsObject:self]) { // If this event is NOT saved aka 'Cancel' is pressed. if (![event isUpdated]) { // It is important that we only delete videos associated when isNew. if (isNew) { NSURL *url = [self getMovieUrl:event.uuid]; [self deleteMovieByUrlIfExists:url]; } self.event = nil; } } } - (IBAction)done:(id)sender { [self.view endEditing:YES]; if (isNew) { event.eventType = eventTypeInput.text; event.targetId= [NSNumber numberWithInt:[targetIdInput.text intValue]]; event.game = game; BOOL success = [[DataStore singletonInstance] saveChanges]; if(success) { NSLog(@"Success: Event %@ saved. hasVideo:%d", event.uuid, [event.hasVideo intValue]); // TODO [newEvent upload]; // Also upload the video if possible. } } [self.navigationController popViewControllerAnimated:YES]; } </code></pre> <p>The above code does not work. When the user presses 'Done', deleteMovieByUrlIfExists:url is still called. Anyone knows why? </p> <p>====== This is how isNew is set.</p> <pre><code>- (void)initWithEvent:(id)sender event:(Event *)ev { isNew = !ev; if (isNew) { event = [[DataStore singletonInstance] createEvent]; } else { event = ev; } } </code></pre>
 

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