UIPopoverPresentationController on iPhone
By David Lashkhi
Starting from iOS 8 Apple presented new UIPopoverPresentationController instead of UIPopoverController. A few days ago I had to implemented one in iPhone app, so I opened the Apple’s documentation and here’s what we see:
As we see there’s clearly said that we should configure presentationcontroller after presenting it.
Incorrect implementation
But this is not correct if you want the popup to be presented in a small view, like on iPad. To do this, you need first to set your controller as UIPopoverPresentationControllerDelegate and implement
-(UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller {
return UIModalPresentationNone;
}
After this we init view controller we want to be presented:
UIViewController *cityAlertViewController = [[UIViewController alloc] init]; DLpopupView *popupView = [[DLpopupView alloc] initWithFrame:CGRectMake(0.0, 0.0, [300, 91) andRestorationName:@“DCpopupView”];
cityAlertViewController.view = popupView;
cityAlertViewController.modalPresentationStyle = UIModalPresentationPopover;
cityAlertViewController.preferredContentSize = CGSizeMake(300, 91);
Now, if we follow Apple’s documentation, we need first to present the cityAlertViewController and then make all the preparation for UIPopoverPresentationController:
[self presentViewController:cityAlertViewController animated:YES completion:nil];
UIPopoverPresentationController *cityErrorPopover = cityAlertViewController.popoverPresentationController; cityErrorPopover.delegate = self; cityErrorPopover.sourceView = self.view; cityErrorPopover.sourceRect = button.frame; cityErrorPopover.permittedArrowDirections = UIPopoverArrowDirectionUp; cityErrorPopover.backgroundColor = greenNormal;
But as I said before, this doesn’t work on iPhone. Presenting view controller before the preparations returns a full screen presentation instead of classic popup.
How to fix it?
The solution is simple— just present view controller after all the preparations are done:
//Prepare the controller you want to be displayed UIViewController *cityAlertViewController = [[UIViewController alloc] init]; DLpopupView *popupView = [[DLpopupView alloc] initWithFrame:CGRectMake(0.0, 0.0, [300, 91) andRestorationName:@“DCpopupView”]; cityAlertViewController.view = popupView; cityAlertViewController.modalPresentationStyle = UIModalPresentationPopover; cityAlertViewController.preferredContentSize = CGSizeMake(300, 91);
//configure UIPopoverPresentationController UIPopoverPresentationController *cityErrorPopover = cityAlertViewController.popoverPresentationController; cityErrorPopover.delegate = self;
cityErrorPopover.sourceView = self.view;
cityErrorPopover.sourceRect = button.frame; cityErrorPopover.permittedArrowDirections = UIPopoverArrowDirectionUp; cityErrorPopover.backgroundColor = greenNormal;
// present popup [self presentViewController:cityAlertViewController animated:YES completion:nil];