iphone – 标签栏控制器(故事板模板)和AppDelegate

AppDelegate.h：

#import <UIKit/UIKit.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong,nonatomiC) UIWindow *window;

@end

AppDelegate.m：

@interface AppDelegate()

@property (nonatomic,assign) UIViewController<SubViewContainer> *currentController;

@end

@synthesize window = _window
@synthesize currentController;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

//I need this piece of code to equal the Tab Bar Controller current tab
self.currentController = ?

return YES;
}

//And I'm gonna use this void for some statements about the Tab Bar Controller tabs:
- (void)tabBarController:(UITabBarController *)tabBarController didSELEctViewController:
(UIViewController *)viewController
{
// with some statements
}