ios - UIPageViewController not resizing its child view controllers on rotation -

i trying use uipageviewcontroller view controllers added it, problem if launch app in portrait mode appears this:

but if rotate device landscape mode appears this:

though pagination control has resized properly, view of added view controller has not resized properly.

below code have used add respective view controller root view controller in appdelegate:

pagescontainerviewcontroller = [[rwpagescontainerviewcontroller alloc] initwithnibname:@"rwpagescontainerviewcontroller" bundle:nil]; [pagescontainerviewcontroller loadpaginationcontrolatindex:0]; self.window.rootviewcontroller = pagescontainerviewcontroller; 

here implementation of loadpaginationcontrolatindex method:

- (void)loadpaginationcontrolatindex:(rwpaginationview)viewindex {     _pagecontroller = [[uipageviewcontroller alloc] initwithtransitionstyle:uipageviewcontrollertransitionstylescroll navigationorientation:uipageviewcontrollernavigationorientationhorizontal options:nil];      firstviewcontroller *firstviewcontroller = [[firstviewcontroller alloc] initwithnibname:@"firstviewcontroller" bundle:nil];     secondviewcontroller *secondviewcontroller = [[secondviewcontroller alloc] initwithnibname:@"secondviewcontroller" bundle:nil];     thirdviewcontroller *thirdviewcontroller = [[thirdviewcontroller alloc] initwithnibname:@"thirdviewcontroller" bundle:nil];      _subviewcontrollers = @[firstviewcontroller, secondviewcontroller, thirdviewcontroller];      [self.pagecontroller setviewcontrollers:@[_subviewcontrollers[viewindex]] direction:uipageviewcontrollernavigationdirectionforward animated:yes completion:nil];      [self addchildviewcontroller:self.pagecontroller];     [[self view] addsubview:[self.pagecontroller view]];      uiview *insertedview = self.pagecontroller.view;     insertedview.translatesautoresizingmaskintoconstraints = no;     self.view.translatesautoresizingmaskintoconstraints = no;      [self.view addconstraints:[nslayoutconstraint constraintswithvisualformat:@"h:|[insertedview]|"                                                                       options:0                                                                       metrics:nil                                                                         views:nsdictionaryofvariablebindings(insertedview)]];     [self.view addconstraints:[nslayoutconstraint constraintswithvisualformat:@"v:|[insertedview]|"                                                                       options:0                                                                       metrics:nil                                                                         views:nsdictionaryofvariablebindings(insertedview)]];      [self.view layoutifneeded];      self.pagecontroller.datasource = self; } 

am missing anything? please suggest.

when application loads or when view loads:

[[uidevice currentdevice] begingeneratingdeviceorientationnotifications]; [[nsnotificationcenter defaultcenter] addobserver:self selector:@selector(orientationchanged:) name:uideviceorientationdidchangenotification object:[uidevice currentdevice]]; 

then add following method:

- (void) orientationchanged:(nsnotification *)note {    [self.pagecontroller setviewcontrollers:@[_subviewcontrollers[currentindex]] direction:uipageviewcontrollernavigationdirectionforward animated:yes completion:nil];    }