有没有一种方法可以获取对故事板中的viewController的引用而无需再次实例化它？

Question

I have created a ViewController menu that contains a tableView with selected items. I keep it inside a Container outside my navigation controller. I need to create that ViewController only once and present it from time to time across my app. I know I can save the ViewController inside a singleton class in order to use it but I was wondering, is there a better way doing that?

Answer 1

The only methods in <UIKit/UIStoryboard.h> are

+ (UIStoryboard *)storyboardWithName:(NSString *)name bundle:(NSBundle *)storyboardBundleOrNil;

- (id)instantiateInitialViewController;
- (id)instantiateViewControllerWithIdentifier:(NSString *)identifier;

so I don't believe you be able to get a view controller from the storyboard without instantiating a new one.

You could make a singleton class, or keep a reference around in your AppDelegate, whichever suits your needs best.