CODEWITHSUNDEEP
iosobjective-cxcodedelegatesprotocols
user4286374
user4286374

Reputation:

Objective-C variable that is accessible in other classes

I have a NSString object called language and I want to access it from other classes what is the proper way? I tried following steps:

1) I created delegate method and send string via delegate

-(void)setLanguageForController:(NSString *)language {
     self.language = language;
}

Console showed this

unrecognized selector sent to instance delegate

2) I created method getCurrentLanguage

static NSString *language;



+(NSString*)getCurrentLanguage {
   return language;
}

And access like this

NSString *myLanguage = [[MyView alloc] getCurrentLanguage];

Upvotes: 2

Views: 109

Answers (2)

Nhat Dinh
Nhat Dinh

Reputation: 3447

you should declare language as a property in your class .h file.

@property (nonatomic, copy) NSString* language;

When you want to set language:

  • initalize your class instance: yourObj

  • call: yourObj.language = "whatever" or [yourObj setLanguage:"whatever"];

    Each property declaration ends with a type specification and a name. For example:

@property(copy) NSString *title;

This syntax is equivalent to declaring the following accessor methods:

- (NSString *)title;
- (void)setTitle:(NSString *)newTitle;

read more about objective-C property here

Upvotes: 3

Sunny
Sunny

Reputation: 831

You don't need to create your method like setLanguageForController and getCurrentLanguage to get and set the your variable like this if you want to access it from other class. You need to create a property in your interface file or .h file, it will be public and it provide its getter and setter method which you can access from any class by the instance variable of your class that contains your property.

You can declare your property in .h or class interface file like this:

@property (nonatomic, strong) NSString* language;

To set it's value you can use.

obj.language = @"value"; or [obj setLanguage:@"value"];

To get its value. You need to use same instance variable like this

NSString *strLanguageValue = obj.language;

Upvotes: 0

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