小编Dea*_*aff的帖子

我有一个带标签栏的简单应用程序,根据用户输入禁用一个或多个条形项.我知道我需要使用我尝试使用的UITabBarDelegate.但是,当我调用委托方法时,我得到一个未捕获的异常错误[NSObject doesNotRecognizeSelector].我不确定我是在做这件事还是我没有错过任何东西.有什么建议.

我现在拥有以下内容:

WMViewController.h

#import <UIKit/UIKit.h>

#define kHundreds  0

@interface WMViewController : UIViewController <UITabBarDelegate, UIPickerViewDelegate, UIPickerViewDataSource>{

}

@end

WMViewController.m

#import "WMViewController.h"
#import "MLDTabBarControllerAppDelegate.h"

@implementation WMViewController

- (IBAction)finishWizard{
     MLDTabBarControllerAppDelegate *appDelegate = (MLDTabBarControllerAppDelegate *)[[UIApplication sharedApplication] delegate];
     [appDelegate setAvailabilityTabIndex:0 Enable:TRUE];


}

MLDTabBarControllerAppDelegate.h
#import <Foundation/Foundation.h>


@interface MLDTabBarControllerAppDelegate : NSObject <UITabBarDelegate>{

}

- (void) setAvailabilityTabIndex: (NSInteger) index Enable: (BOOL) enable;

@end


MLDTabBarControllerAppDelegate.m

#import "MLDTabBarControllerApplicationDelegate.h"
#import "MyListDietAppDelegate.h"


@implementation MLDTabBarControllerAppDelegate

- (void) setAvailabilityTabIndex: (NSInteger) index Enable: (BOOL) enable
{
UITabBarController *controller = (UITabBarController *)[[[MyOrganizerAppDelegate getTabBarController] viewControllers ] …