how to call the method one class to another class in obj c

Question

I have one appdelegate and notifyviewcontroller class.

declare one method -(void)getNotificaionform in notifyviewcontroller.

I want to call this method in appdelegate applicationDidBecomeActive and applicationDidEnterBackground .

How can i achieve this help me?

I'm new to development.

possible duplicate of [Calling UIViewController method from app delegate](http://stackoverflow.com/questions/18950670/calling-uiviewcontroller-method-from-app-delegate) — jscs, Feb 12 '15 at 21:15

score 0 · Answer 1 · answered Feb 12 '15 at 10:18

for (UIViewController * vc in Nvc.viewControllers) {
    if ([vc isKindOfClass:notifyviewcontroller Class]) {
        [vc getNotificaionform];
    }
}

Use this code in your applicationDidEnterBackground and Here Nvc is an object of UINavigationController .

score 0 · Answer 2 · answered Feb 12 '15 at 10:35

For you appDelegate to know about your UIViewController sub class you must import its header.

So in your AppDelegate.m add -

#import "NotifyViewController.h"

Then assuming your rootViewController is of this class you can access it anywhere in your AppDelegate.m and send it a message using -

[(NotifyViewController*)self.window.rootViewController importNotificationForm];// I changed the method name slightly as I don't like to use get with a method of type void

Note the typecast and also please start class names with a capital letter and use camel case. Follow naming conventions for easier to read code.

how to call the method one class to another class in obj c

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