How to add a 'cancel' button to a QuickDialog controller? - ios

Question

I am using the regular QuickDialog controller code from their tutorial:
QRootElement *root = [[QRootElement alloc] init];
root.title = #"Hello"
root.grouped = YES;
QSection *section = [[QSection alloc] init];
QEntryElement *hello = [[QEntryElement alloc] initWithTitle:#"Hello World" Value:#""];
[root addSection:section];
[info addElement:hello];
UINavigationController *navigation = [QuickDialogController controllerWithNavigationForRoot:root];
[self presentModalViewController:navigation animated:YES];
How can I add a 'cancel' button to the navigation bar? I tried:
navigation.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel handler:^(id sender){
[self.navigationController.modalViewController dismissModalViewControllerAnimated:YES];
}];
... but that didn't work. Any suggestions?

Answer 1

The proper way to do this is to adjust the code for the `leftBarButtonItem' like this:
navigation.navigationBar.topItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel handler:^(id sender){
[self.navigationController.modalViewController dismissModalViewControllerAnimated:YES];
}];

Answer 2

I know this is late but hopefully this will help someone else. I had a similar problem, and was able to use the following code to create a button to remove the form from view
navigation.navigationBar.topItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"Close" style:UIBarButtonItemStyleDone target:self action:#selector(dismissModalViewControllerAnimated:)];

Answer 3

I tried your code in my sample logic and achieved the cancel button in the following way.
You need to set your navigationItem's leftbarbuttonitem on the viewcontroller of a navigation controller, instead of setting straight to your navigationcontroller.
// -- present your root controller.
UINavigationController *navigation = [QuickDialogController controllerWithNavigationForRoot:root];
[self presentModalViewController:navigation animated:YES];
[[[navigation topViewController] navigationItem] setLeftBarButtonItem:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel handler:^(id sender){
[self.navigationController dismissModalViewControllerAnimated:YES];
}]];