CODEWITHSUNDEEP
iosuiviewcontrollerios6
MobileCushion
MobileCushion

Reputation: 7095

How to remove a UIViewController?

At some point in my application workflow, I have one showing UIViewController. And as I press the Home button, I leave the application, leaving it running in the background.

However, when I return to the app, I would like the showing UIViewController not to appear again. I would like it to be removed or destroyed or anything like that.

How can I accomplish that?

Upvotes: 2

Views: 214

Answers (2)

Daniel Gao
Daniel Gao

Reputation: 293

You may add observer to UIApplicationDidEnterBackgroundNotification in your viewcontroller class. Try this in the init method:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(enterBackground) name:UIApplicationDidEnterBackgroundNotification object:nil];

then in the enterBackground method, you can pop or dismiss your viewcontroller.

remember call this

[[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidEnterBackgroundNotification object:nil];

in the dealloc

Upvotes: 1

Phillip Mills
Phillip Mills

Reputation: 31026

There is a notification you can register to receive that's called UIApplicationDidEnterBackgroundNotification (also UIApplicationWillResignActiveNotification). If you listen for that in your view controller, you can arrange for it to be popped or dismissed depending on how it came to be displayed in the first place.

Upvotes: 1

Related Questions