ios - iOS8 change UIPopoverPresentationController trait collection -

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i'm deploying application on both iphone , ipad (ios7 , ios8).
i'm using storyboard size classes, have base size classes any-any fits ipad layout , compact-regular fits iphone models.
view controllers in ipad version presented custom slide in/out segue, others popovers.
while works on ios7 ipad (since xcode build different storyboards) on ios8 have problem shown in popover picks iphone interface.
present in usual way:

if (uipopoverpresentationcontroller.self) {                     commentvc.modalpresentationstyle = uimodalpresentationpopover;                     uipopoverpresentationcontroller * presentationcontroller = commentvc.popoverpresentationcontroller;                     presentationcontroller.sourcerect = [[(afposttimelinetableviewcell*)cell commentbutton] frame];                     presentationcontroller.sourceview = cell;                     presentationcontroller.permittedarrowdirections = uipopoverarrowdirectionany;                     presentationcontroller.delegate = weakself;                     weakself.mypop = presentationcontroller;                     [weakself presentviewcontroller:commentvc animated:yes completion:null];                 }

checking code i've seen presented view controller has uitraitcollection of c-r.
there way make pick r-r?
here little sample

solution found, there property in uipresentationcontroller can set uitraitcollection used on presented -overridetraitcollection

presentationcontroller.overridetraitcollection= combinedtraits.copy;

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