App crashing in UIPopoverPresentationController but no explicit popovers? - ios

Question

My app (iOS 8 only) has been rejected due to a crash when IAP are attempted. I've tried pretty much every incantation of the purchase process in an AdHoc build but cannot reproduce a crash. Looking at the crash log that the review team attached, I am seeing a very weird stack trace in the last exception backtrace. The crash looks to be involving UIPopoverController, however my app, though universal, does not explicitly or implicitly display popovers anywhere. Does anyone have any idea what might trigger the activity that is causing this crash? What might cause my app to display popovers when the review team is looking at it only?
Last Exception Backtrace:
0 CoreFoundation 0x186d52084 __exceptionPreprocess + 132
1 libobjc.A.dylib 0x1977a40e4 objc_exception_throw + 60
2 UIKit 0x18bc0aee0 -[UIPopoverPresentationController presentationTransitionWillBegin] + 2464
3 UIKit 0x18b7d27d8 __71-[UIPresentationController _initViewHierarchyForPresentationSuperview:]_block_invoke + 1324
4 UIKit 0x18b7d1310 __56-[UIPresentationController runTransitionForCurrentState]_block_invoke + 212
5 UIKit 0x18b557388 _applyBlockToCFArrayCopiedToStack + 356
6 UIKit 0x18b4c8e4c _afterCACommitHandler + 532
7 CoreFoundation 0x186d0a388 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
8 CoreFoundation 0x186d07314 __CFRunLoopDoObservers + 360
9 CoreFoundation 0x186d076f4 __CFRunLoopRun + 836
10 CoreFoundation 0x186c35664 CFRunLoopRunSpecific + 396
11 GraphicsServices 0x18fd435a4 GSEventRunModal + 168
12 UIKit 0x18b53a984 UIApplicationMain + 1488

Answer 1

Not sure if it's the same cause as the original question, but I have the exact same error and the issue was using a UIAlertController with an ActionSheet style, presenting it worked fine on iPhone but iPad requires a sourceview to be set - https://stackoverflow.com/a/24233937/285694

Answer 2

This is a just similar situation. I had a crash bug on [UIPopoverPresentationController presentationTransitionWillBegin] on iOS 9+, and turns out that the crash occurred when sourceView was nil.
Example (in Objective-C):
UIViewController *vc = <#instance#>.
vc.modalPresentationStyle = UIModalPresentationPopover;
vc.popoverPresentationController.delegate = self;
vc.popoverPresentationController.sourceView = sourceView; // <--- this MUST NOT be nil.
vc.popoverPresentationController.sourceRect = sourceView.bounds;
[self presentViewController:vc animated:YES completion:nil];

Answer 3

It most probable the ActionSheet crash in iPad.
You should have a if condition like:
if let popoverController = alertVC.popoverPresentationController {
popoverController.sourceView = self.view
popoverController.sourceRect = CGRect(x: self.view.bounds.midX, y: self.view.bounds.midY, width: 0, height: 0)
popoverController.permittedArrowDirections = []
}

Answer 4

First you should check UIPopoverPresentationController available or not.
NSArray *Items = [NSArray arrayWithObjects:emailBody,anImage, nil];
UIActivityViewController *activityController = [[UIActivityViewController alloc] initWithActivityItems:Items applicationActivities:nil];
if ([UIPopoverPresentationController class] != nil) {
UIPopoverPresentationController *popover = activityController.popoverPresentationController;
if (popover)
{
popover.sourceView = sender;
//popover.sourceRect = sender.bounds;
popover.permittedArrowDirections = UIPopoverArrowDirectionAny;
}
}
[self presentViewController:activityController animated:YES completion:NULL];