how to not call viewdidload in uinavigationcontroller?

Question

I am looking for a solution to my situation. My app is as followed:

On VC1 there is a textfield and button. User types a name. Then click on a button. This button open V

Answer 1

here is how you can define singleton class that is called AppShareData : AppShareData.h

@interface AppSharedData : NSObject
+(AppSharedData*)sharedInstance ;
@property (nonatomic) BOOL sharedBoolVariable ;
@end

AppShareData.m:

@implementation AppSharedData
@synthesize sharedBoolVariable;
+(AppSharedData *) sharedInstance
{
   static AppSharedData *_sharedInstance = nil;
   static dispatch_once_t Token;
   dispatch_once(&Token, ^{
     _sharedInstance = [[AppSharedData alloc]init];
   });
  return _sharedInstance;
}
@end

and then if you want to edit or set the value of the variable in any class i would do the following :

-(void)editMethod
{
   AppSharedData * dataObject = [AppSharedData sharedInstance] ; 
   dataObject = YES ; 
}

and if i want to retrieve the value of the variable in any class i do the following :

-(void)retrieveMethod
{
   AppSharedData * dataObject = [AppSharedData sharedInstance] ; 
   BOOL someVariableInMyClass = [dataObject sharedBoolVariable] ; 
}