CODEWITHSUNDEEP
iosuikitdevice-orientation
eonil
eonil

Reputation: 86075

How to post `UIDeviceOrientationDidChangeNotification` properly?

I'm trying to notify my UIViewController re-apply layout by device orientation. To do this, I'm posting UIDeviceOrientationDidChangeNotification to default center. It worked, but without rotation animation. I think there is something I had missing. How can I post UIDeviceOrientationDidChangeNotification properly?

Upvotes: 1

Views: 1353

Answers (3)

iutinvg
iutinvg

Reputation: 4225

It will post events for you:

- (void)updateOrientation
{
    [[UIDevice currentDevice] endGeneratingDeviceOrientationNotifications];
    [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
}

But, of course, you should be more neat and call [[UIDevice currentDevice] endGeneratingDeviceOrientationNotifications] when you need to stop rotations, and then you call [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications]; when you are ready to handle it again: it will call all necessary callbacks for your view controller.

Upvotes: 1

jrtc27
jrtc27

Reputation: 8526

Use: 

[[UIApplication sharedApplication] setStatusBarOrientation: UIInterfaceOrientationLandscapeRight animated:YES];

instead (replace LandscapeRight as needed), as you should not be posting system notifications.

Upvotes: 1

honcheng
honcheng

Reputation: 2044

I don't think there should be anything when you try to post that. Instead, it is posted automatically when there is an orientation change. You should be adding a observer for hat notification if you want to use it.

Upvotes: 0

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