Viewcontroller上的NSObject调用方法

Question

Objective-C的新手可能会做一些错误的事情。 我试图从ViewController上的NSObject调用一个方法，这里是我的代码。

ViewController.h

-(void)loadBarNavButtons;

ViewController.m

#import "ViewController.h"
#import "Constants.h"
#import "Utils.h"
#import "DesignStyle.h"
#import "SocialConnection.h"

@implementation ViewController{
    SocialConnection *SC;
}

- (void)viewDidLoad
{   
    // enables use of social connection
    SC = [[SocialConnection alloc] init];
    [SC setup:self]; // pass in the UIVIEWCONTROLLER - could not find another way to do this?
    // not sure if correct.

    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

// method being called from NSObject
-(void)loadBarNavButtons{
  // DO Something here
}

SocialConnection.m

@implementation SocialConnection{
    UIView* view;
    UIViewController* controller;
}

// the setup function passes in a view controller
-(void)setup:(UIViewController*)UIController{
    controller = UIController;
    view = controller.view;
}

// setup when the user is logged in
//FIXME: This is the line that is broken
-(void)isLoggedIn{
    NSLog(@"Loggged in!");
    [controller loadBarNavButtons];
}

给我以下错误：

  

'UIViewController'的无可见@interface声明了选择器   'loadBarNavButtons'

我明白它找不到方法。 是否在.h文件中定义不正确？

Answer 1

您的控制器是UIViewController的实例。您可能希望它是ViewController的实例。

顺便说一下：你应该试着对你的名字更加冗长。