从iphone的不同视图控制器调用功能

Question

我有一个问题,我想从另一个控制器调用一个视图控制器中定义的函数.我尝试了似乎只有一百种不同的设置,似乎没有任何效果.

我已经发布了基本代码,并希望有人可以告诉我他们将如何做到这一点.基本上我想要做的就是当按下dealB按钮时,从GameViewController调用SwitchViewController中定义的MYBPress函数.任何帮助将不胜感激.PS:我已经编写了很长时间,但对于Obj-C来说却是新手

// ------- SwitchViewController.h  ---------------
#import <UIKit/UIKit.h>
@class GameViewController;
@class OptionsViewController;

@interface SwitchViewController : UIViewController {
 OptionsViewController *optionsViewController;
}  

@property ( retain, nonatomic ) OptionsViewController *optionsViewController;
@property ( retain, nonatomic ) GameViewController *gameViewController;
-(IBAction)MyBPress:(id)sender;
@end


//  --------  GameViewController.h ------------

#import <UIKit/UIKit.h>

@interface GameViewController : UIViewController {
   IBOutlet UIButton    *dealB; 
}
@property(nonatomic,retain) IBOutlet UIButton    *dealB;
- (IBAction)dealB:(id)sender;
@end


//  -------  GameViewController.m
#import "GameViewController.h"

@implementation GameViewController
@synthesize dealB;          // The Deal button

- (IBAction)dealB:(id)sender
{
   //  Here is where I want to call the MyBPress function
}

@end

Answer 1

/* Ok, so based on a suggestion to use Notifications, I solved my problem.  It's
actually so simple, it ridiculous I had so much trouble with it.   Thought I'd 
post it just in case some other newbie hits the same type issue.
*/

// in the SwitchViewController.m  I added this.  This sets it up so 
// when the dealNotification
// is triggered, the HideBar function I have defined in SwitchViewController 
// gets called.
[[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(HideBar) name:@"dealNotification" object: nil];


// in the GameViewController.m where I want to call the function in the other controller,
// I added this and it send the notification to run the function
[[NSNotificationCenter defaultCenter] postNotificationName:@"dealNotification" object: nil];

Answer 2

"大家好,我有一个问题,我想调用另一个控制器在一个视图控制器中定义的函数.我尝试看似上面的一百个不同的设置,似乎什么都没有用."

这是因为它设计不好.控制器不应直接相互通信.

您应该考虑使用代理,通知或某些共享的中央实体.