CODEWITHSUNDEEP
iosobjective-cxcodepropertiesnsstring
Cheese Lord
Cheese Lord

Reputation: 57

Xcode Property Not Retaining Value

I have a view controller called LoginWindowViewController.h that declared a property called usernameTextField:

@property (strong, nonatomic) IBOutlet UITextField *usernameTextField;

A string called James is associated to this TextField. I then import another view controller,FirstViewController.h into my LoginWindowViewController.m and I also imported LoginWindowViewController.h into FirstViewController.m . In my FirstViewController.h there is a property called username.

@property (strong, nonatomic) IBOutlet NSString *userName;

Then i assign usernameTextField to username(In my FirstViewController.m). But when i NSlog the property username in my FirstViewController.m, it gives a null value.How do i fix this?

Upvotes: 1

Views: 215

Answers (1)

Max
Max

Reputation: 1163

When you import classes you do not actually import any values. When you set the value of a property it is only set on that instance of the class. You will need to explicitly reference the property of your current instance to get the value you have set.

One note: IBOutlet stands for Interface Builder Outlet and is how you create a link from a storyboard or xib file UI element to a class property. So, no need to use IBOutlet if you are not linking to something in interface builder.

String should be declared 

@property (nonatomic, strong) NSString *userName;

Then when you instantiate your login view controller from first view controller you can set the property like this 

LoginWindowViewController *loginVC = [[LoginWindowViewController alloc] init];
[loginVC.usernameTextField setText:self.userName];

Upvotes: 1

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