Question

Here is what i want to do..
I have a class called userInfo. I create an instance of this object in another class called LoginInfo. I want to keep this instace alive and accessible to all other classes and till the time the application is alive…

How do i achieve this? I read somewhere that i can do this with singleton classes. But i have no idea what they are…I am quite new to cocoa..Please guide..

Thanks in advance..

---

@interface UserInfo : NSObject {
    NSString * firstName;
    NSString * lastName;
    NSString * uID;
    NSString * password;
    NSString * userType;

}

-(id)initWithFirstName:(NSString *)fname andLastName:(NSString *)lname andUID:(NSString *)userID andPassword:(NSString *)pwd andUserType:(NSString *)type;
@property (readwrite, copy) NSString * firstName;
@property (readwrite, copy) NSString * lastName;
@property (readwrite, copy) NSString * uID;
@property (readwrite, copy) NSString * password;
@property (readwrite, copy) NSString * userType;

@end



#import "UserInfo.h"


@implementation UserInfo

-(id)initWithFirstName:(NSString *)fname andLastName:(NSString *)lname andUID:(NSString *)usid andPassword:(NSString *)pwd andUserType:(NSString *)type{
    self=[super init];
    if (self) {
        self.firstName=fname;
        self.lastName=lname;
        self.uID=usid;
        self.password=pwd;
        self.userType=type;
        }
    return self;
}

@synthesize firstName;
@synthesize lastName;
@synthesize uID;
@synthesize password;
@synthesize userType;


@end

This is the class i want to make singleton…. Please guide as to what changes i have to make..I want to use the custom constructor…
M sorry to put this code as an answer. But i could not get it in a comment…

Answer 1

What a Singleton is:
Yeah.. I know.. I'm a simpleton.. So what's a Singleton?

How to implement it in Objective-C:
What should my Objective-C singleton look like?