How to use dismiss an iPhone popover in a Storyboard - ios

Question

I would like to use the solution provided by Travis M. to this question:
How to use dismiss an iPhone popover in an Adaptive Storyboard
However, I would need the below be translated to objective c.
Anyone could help out?
If what you want is a popover on your iPad but a modal sheet with a close button on your iPhone then you can do it without creating an extra navigation controller in storyboard for the popover.
In Xcode 6.3 storyboard, you simply hook up a view controller and designate the segue as a "Present as Popover"
The code below should go in the view controller that segues to the popover, not in the popover itself:
First you set up the popover delegate:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if (segue.identifier == "myPopoverSegueName") {
let vc = segue.destinationViewController
vc.popoverPresentationController?.delegate = self
return
}
}
Then you add the delegate extension (below your view controller's code) and create the navigation controller / close button on the fly:
extension myViewController: UIPopoverPresentationControllerDelegate {
func presentationController(controller: UIPresentationController, viewControllerForAdaptivePresentationStyle style: UIModalPresentationStyle) -> UIViewController? {
let btnDone = UIBarButtonItem(title: "Done", style: .Done, target: self, action: "dismiss")
let nav = UINavigationController(rootViewController: controller.presentedViewController)
nav.topViewController.navigationItem.leftBarButtonItem = btnDone
return nav
}
}
Then you add the delegate extension (below your view controller's code) and create the navigation controller / close button on the fly:
extension myViewController: UIPopoverPresentationControllerDelegate {
func presentationController(controller: UIPresentationController, viewControllerForAdaptivePresentationStyle style: UIModalPresentationStyle) -> UIViewController? {
let btnDone = UIBarButtonItem(title: "Done", style: .Done, target: self, action: "dismiss")
let nav = UINavigationController(rootViewController: controller.presentedViewController)
nav.topViewController.navigationItem.leftBarButtonItem = btnDone
return nav
}
}
Then you add your dismiss function and you should be good to go:
func dismiss() {
self.dismissViewControllerAnimated(true, completion: nil)
}

Answer 1

It's not that different from objective-c. You could probably figure out what's going on just by looking at it. It's just setting up prepare for segue and implementing part of a protocol.
myViewController needs to declare itself as conforming to UIAdaptivePresentationControllerDelegate. Then this is the code.
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([[segue identifier] isEqualToString:#"myPopoverSegueName"]) {
UIViewController *viewController = segue.destinationViewController;
viewController.popoverPresentationController.delegate = self
}
}
- (UIViewController *)presentationController:(UIPresentationController *)controller
viewControllerForAdaptivePresentationStyle:(UIModalPresentationStyle)style
{
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:#selector(dismiss)];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:controller.presentedViewController];
navController.topViewController.navigationItem.leftBarButtonItem = doneButton;
}
-(void) dismiss
{
[self dismissViewControllerAnimated:YES completion:nil];
}
You don't need to use an extension or category. Not going to vouch for whether this does what Travis M. says it does.