how to access a variable from another nib file in ios

Question

I have two view controller files which is InputViewController and CurrencyViewController. I want to access the variable declared in InputView inside CurrencyView. It is designed in Empty Application Project.

The CurrencyViewController should have the instance of InputViewController. Then you can access that variable — Anil Varghese
– Anil Varghese, Commented Feb 12, 2013 at 8:40

Heena Mulla · Accepted Answer · 2013-02-12 11:30:03Z

2

You can declare the variable globally in AppDelegate & then can access in both viewController.
The changes made in the variable will reflect in both controllers.
Make the variable as a property of AppDelegate.h class
eg. @property (strong, nonatomic) NSString *Var;
& synthesize it in AppDelegate.m
@synthesize Var;

declare "AppDelegate * appDelegate" in both Controllers.h & then in controller.m in viewDidLoad write  appDelegate=[[UIApplication sharedApplication]delegate];

now the variable can accessible using appDelegate.var anywhere in your code of both ViewController & changes are also reflected in both.
Hope this will work more efficiently for your need.

answered Feb 12, 2013 at 11:30

Heena Mulla

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1 Comment

BudHawk Over a year ago

Thanks ! I already tried it. Still not working. Used protocols, object instance. no joy

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