CODEWITHSUNDEEP
objective-ciosmethodsapple-push-notifications
Veer
Veer

Reputation: 232

How to call a function when receive push notification?

I am working on an iphone app with push notifications. My question is how to call a function from a classB when i receive a push notification without creating an instance of that classB nor using static method?

Many thanks :)

Upvotes: 0

Views: 760

Answers (2)

trojanfoe
trojanfoe

Reputation: 122458

You will need to hold a reference to classB from within the object that receives the push notification:

// The header file of the class that receives the notification

@class classB;

@interface MyNotifiedClass : NSObject
{
    classB *_classB;
}

@property (retain, nonatomic, readwrite) classB *classB;

// The implementation file of the class that receives the notification

@implementation MyNotifiedClass

....

@synthesize classB = _classB;


- (void)theMethodThatReceivesTheNotification:(whatever)
{
    [_classB doSomethingNowPlease];
}

You will obviously have to set the instance of classB in this class before it will work:

// Someplace outside both classes (assuming _classB points to an instance of classB
// and _myNotifiedClass points to an instance of MyNotifiedClass)

[_myNotifiedClass setClassB:_classB];

Upvotes: 1

graver
graver

Reputation: 15213

There is no way to call an instance method of a class without instantiating it. Your solution is either calling a class method or classB could have singleton initializer.

Upvotes: 0

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