popviewcontroller

实现拦截 UIViewController 的 pop 操作有两种方式： 自定义实现返回按钮，即设置 UIBarButtonItem 来实现自定义的返回操作。 创建 UINavigatonController 的 Category ，来定制 navigationBar: shouldPopItem: 的逻辑。 UIViewController+BackButtonHandler.h： #import <UIKit/UIKit.h> @protocol BackButtonHandlerProtocol <NSObject> @optional // Override this method in UIViewController derived class to handle 'Back' button click -(BOOL)navigationShouldPopOnBackButton; @end @interface UIViewController (BackButtonHandler) <BackButtonHandlerProtocol> @end UIViewController+BackButtonHandler.m： #import "UIViewController+BackButtonHandler.h" @implementation

iOS 7 has introduced pan gesture to popViewController. It introductes problems with the sidebar that I am using so I want to prevent this new function of ios7. How can I cancel that behaviour? Thanks in advance You can use yourNavigationController.interactivePopGestureRecognizer.enabled = NO; 来源： https://stackoverflow.com/questions/18975060/prevent-ios7-pan-gesture-to-pop-view-controller

I have three viewcontroller. when I get to the third viewcontroller, I use poptorootviewcontroller to pop to my first view controller, but when I use popviewcontroller in my third viewcontroller (i want to go back to my second viewcontroller) its poping but all the info that I edit in my second viewcontroller are there, and I want the secondviewcontroller to be new (reset this viewcontroller), like this viewcontroller to be reloaded. here is my code in the third viewcontroller: -(IBAction)playAgain:(id)sender { [self.navigationController popViewControllerAnimated:YES]; } how can I do it?

I have two UIViewControllers, "A" and "B", where "A" overrides the shouldAutorotateToInterfaceOrientation to return YES for UIInterfaceOrientationPortrait, and "B" returns YES for all orientations. In my example "A" is the root navigation view controller, and I then use pushViewController for "B". After that I rotate the device into landscape, which successfully autorotates "B", then I pop "B" (back button or via popViewController) to return to "A". When targetting iPhone OS 3.1.3, "A" returns to the portrait orientation as expected. When targetting iPhone OS 3.2, I have two side-effects: "A"

My setup is simple, and my issue is not very different from this one . However to better explain it I have posted it here: NavController -> VC1 -> VC2 VC1 is root view controller of NavController. VC2 is accessible via Push segue from VC1. I want to detect, within VC1, whether: It appeared directly as root view controller (via Push) It appeared as a result of VC2 being popped I read the docs which says following should tell me if later is true. isMovingToParentViewController == NO However that is not the case, and above condition ALWAYS turns out to be TRUE. Which means that, (self

I have a custom button on a view controller in the navigation controller's heirarchy, that when pressed, pops the visible view controller. I want to use UIView's transform property to animate the closing of the view controller. It works, but if I use `popViewControllerAnimated:YES', the default left slide of the animation is still there, though my custom transform also works. If I set popViewControllerAnimated:NO it doesn't animate anything at all. I also looked into using CATransition which works when I have popViewControllerAnimated set to NO , but there isn't a "zoom" effect that's part of