How to set NSStatusBar title from other class?

In one of my classes i setup my NSStatusBar like:

        statusItem = [[[NSStatusBar systemStatusBar] statusItemWithLength:NSVariableStatusItemLength] retain];
    [statusItem setMenu:statusMenu];

Is it possible to somehow call something like:

[statusItem setTitle:@"Waiting for data..."];

From another class? I want to change the title as a user has entered information into a preferences window that is be开发者_StackOverflowing handled by a different class.

I tried to make a class function:

+(void)ChangeTitel 

Which i called from the preferences class, it seemed to be able to call it but somehow not access the statusItem object.

Any ideas? :)

If you want to change the title from another class, that other class needs to have a reference to that status Item.

So what you have to do, is write a method that returns the pointer of this status item, ( its an instance variable right? ) and then call that method, to get the NSStatusItem object in the other class.

I think you are new to OOP coding, judging from your question. A class is a set of code.. sorta, if you [[Class alloc] init] you allocate some memory for the class, and create a new object of that class in it. A new instance. If you call something that starts with a - then you are calling an instance method, that requires you to have an instance. If you call something with a + you are calling a CLASS method, which has no instance, so no access to the instance variable of you status item.

- (NSStatusItem *)statusItem
{ return statusItem; }

Don't forget to declare this method in your header file as well, otherwise you will get a compiler warning.

Should be in the class that manages the status item. Then in the class where you want to use the status item:

#import "ManagerClass.h" // on top, so we have the method declared

Then:

ManagerClass *someInstanceToIt = [[ManagerClass alloc] init];
[(NSStatusItem *)[someInstanceToIt statusItem] setTitle:@"New Title"];

If the instance of the manager class is an interface builder outlet, or has been created before, then you shouldn't do that first line with alloc] init]

If you need any more help, post a comment.