iOS Save User Details Throughout Session

[donaghy]

Hi all, I have a login form that will take the user's username and password. I want to store this and access it whenever i want when i go to another form. Id prefer not to pass it to each form and store as a declared property on each form. I thought it would be possible to create a class with a username and password property and read and write to this. I created an instance of this class and write the values to the properties but of course this will drop when i release the instance.

What would be the best method to do this?

cheers.

 

[dejo]

I would suggest the use of NSUserDefaults for this task.

 

[PhoneyDeveloper]

What you're asking about is called a singleton. The app delegate, for instance, is a singleton. So are things like NSFileManager, the UIApplication object, and others. Apple does have some description about how to write a singleton object in Objective-C.

The way I would do this would be to create a class that has a couple class methods that return the name and password properties. Something like this

@interface MyUserCredentials : NSObject
{
}

+(NSString*)username;
+(NSString*)password;
+(void)setUserName:(NSString*)username;
+(void)setPassword:(NSString*)password;@end

Because of how Obj-C works you need to store the strings as file scope statics.

If you want to store the strings between runs of the app you should store them in the keychain.

 

[donaghy]

I'll look into this, thanks for help