How to declare an instance of UIImageView as global?

Question

I want to use single imageview in all classes so i want to declare it as global. Can anyone please tell me how to declare it as global.

IMHO, you can attach the image view to [a singleton instance][1]. [1]: http://stackoverflow.com/questions/5720029/create-singleton-using-gcds-dispatch-once-in-objective-c — ZhangChn, Mar 08 '12 at 05:56

score 1 · Answer 1 · answered Mar 08 '12 at 05:56

1

you can create it in appdelegate and use it

 AppDelegate *localVar = [[UIApplication sharedApplication] delegate]; // OK
    localVar.imageView=[...];

answered Mar 08 '12 at 05:56

Ankit Srivastava

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score 1 · Answer 2 · edited Jul 25 '12 at 08:11

1

Yes, there is, you may use Singleton Class.

here the tutorial http://www.galloway.me.uk/tutorials/singleton-classes/

edited Jul 25 '12 at 08:11

mattjgalloway

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answered Mar 08 '12 at 05:56

HelmiB

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score 0 · Answer 3 · answered Mar 08 '12 at 05:56

Not sure if this is something that really vibes with how iOS does things, but if you really want to, you can declare the variable as a forward declaration in some .h file:

extern something_t *x;

and then in a .c or .m file, actually define the variable:

something_t *x;

If you want to initialize it, you can place an initialization wherever you deem appropriate:

- (void) applicationDidFinishLaunching:(NSNotification*) notice {
    x = [[Something_T alloc] init];
}

Again, not sure this is the right way to solve whatever problem you might be having. A singleton might be a more Cocoa-esque idea.

score 0 · Answer 4 · answered Mar 08 '12 at 06:38

0

Declare the variable in Yourapp_Prefix.pch file in the project. The file is located in 'other sources' group.

UIImageView *imgv;

Now you can access the object imgv in any class.

answered Mar 08 '12 at 06:38

ArunGJ

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How to declare an instance of UIImageView as global?

4 Answers4