Orientation management in UINavigationController in iOS 10 -


i have simple app, 3 uiviewcontrollers in uinavigationcontroller:

enter image description here

i wish first 2 uiviewcontrollers work in portrait orientation , last 1 work in landscape one.

i subclassed uinavigation controller , overrided 3 methods:

class navctrl: uinavigationcontroller {      override var shouldautorotate: bool {         return topviewcontroller?.shouldautorotate ?? super.shouldautorotate     }      override var supportedinterfaceorientations: uiinterfaceorientationmask {         return topviewcontroller?.supportedinterfaceorientations ?? super.supportedinterfaceorientations     }      override var preferredinterfaceorientationforpresentation: uiinterfaceorientation {         return topviewcontroller?.preferredinterfaceorientationforpresentation ?? super.preferredinterfaceorientationforpresentation     } }

in first 2 view controllers added:

override var shouldautorotate: bool {     return false }  override var supportedinterfaceorientations: uiinterfaceorientationmask {     return .portrait }

in last view have:

override var shouldautorotate: bool {     return false }  override var supportedinterfaceorientations: uiinterfaceorientationmask {     return .landscapeleft }

when run app 3 views support portrait orientation, last view doesn't work in landscape. put breakpoints shouldautorotate , supportedinterfaceorientations (uinavigationcontroller) there called once when app loads , again when rotate device not when view controller pushed nav controller.

i tried add line:

uiviewcontroller.attemptrotationtodeviceorientation()

to viewdidload last view controller force orientation reload no luck.

do have idea make app match requirements?

thanks


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