ios - How flip page after time interval? -

i use template page-based application(rootviewcontroller, dataviewcontroller, modelcontroller) in xcode. want flip page after time interval. how can it?

code flip next page

    - (uiviewcontroller *)pageviewcontroller:(uipageviewcontroller *)pageviewcontroller viewcontrollerafterviewcontroller:(uiviewcontroller *)viewcontroller {     nsuinteger index = [self indexofviewcontroller:(dataviewcontroller *)viewcontroller];     if (index == nsnotfound) {         return nil;     }      index++;     if (index == [self.pagedata count]) {         return nil;     }     return [self viewcontrolleratindex:index storyboard:viewcontroller.storyboard]; } 

i hope you

homeviewcontroller *homevc = [[homeviewcontroller alloc] init]; uinavigationcontroller *nav = [[uinavigationcontroller alloc] initwithrootviewcontroller:homevc]; [uiview transitionfromview:self.view toview:nav.view duration:0.5 options:uiviewanimationoptiontransitionflipfromleft completion:^(bool finished) {                                     //action implement                             }]; 

[or]

homeviewcontroller *homevc = [[homeviewcontroller alloc] init]; uinavigationcontroller *nav = [[uinavigationcontroller alloc] initwithrootviewcontroller:homevc]; nav.modaltransitionstyle = uimodaltransitionstylefliphorizontal; nav.modalpresentationstyle = uimodalpresentationformsheet; [[self navigationcontroller] presentviewcontroller:nav animated:yes completion:^{                //action implement             }];