CODEWITHSUNDEEP
iphoneiosobjective-cnsnotificationcenter
Abhay Curam
Abhay Curam

Reputation: 75

How can I test if a current view controller is the first responder/top most view controller once a application becomes active

What I would specifically like to do is test in a view controller X's view will appear method

if ('view controller X' is the first responder) {
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(TestSelector2:) name:UIApplicationDidBecomeActiveNotification object:nil];
}

'view controller x' in the above example code is nothing but 'self', I used view controller x for clarity

because currently every view controller I have subscribing to the UIApplicationDidBecomeActiveNotification is getting called and they are each calling theire respective methods. I would only like one view controller to be notified that the application became active at a time, the view controller I would like to be notified should always be the one visible to the user (the first responder). Can someone help, I am new to IOS dev

Thanks

Upvotes: 1

Views: 1185

Answers (1)

Sid
Sid

Reputation: 9536

If you're using a navigation controller you can access it using navigationController.visibleViewController

Upvotes: 1

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