Question

I’m having some trouble trying to change my view layout when rotation the device, I have my main view called OverviewViewController, this consists of 2 view that will be hidden / shown when the device is in a certain orientation.

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{    
     // do some layout stuff
     NSLog(@"OverviewViewController shouldAutorotateToInterfaceOrientation");
     return YES;
}

Every time I rotate my device this method is executed twice, but in any subview it’s never called, for instance;

// In OverviewViewController

_landscapeView = [[LandscapeOverviewViewController alloc] initWithNibName:nil bundle:nil];
[self.view addSubview:_landscapeView.view];


// In LandscapeOverviewViewController

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{    
    NSLog(@"LandscapeOverviewViewController: shouldAutorateToInterfaceOrientation");

    // Only change orientation when it's landscape
    if(interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight) return YES;
    return NO;
}

Is there a reason for subviews not responding to the device orientation? The method is just never called there.

Answer 1

As I can see you are adding LandscapeOverviewViewController view as a subView to self.view.
And you want your LandscapeOverviewViewController‘s shouldAutorotateToInterfaceOrientation to be called which will never happen.
As these are called to that controller which are pushed or presented not like you are doing.

Solution:
You can do two things
1.

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{    
     // do some layout stuff
     NSLog(@"OverviewViewController shouldAutorotateToInterfaceOrientation");
     //Call explicitly shouldAutorotateToInterfaceOrientation of LandscapeOverviewViewController
     [_landscapeView shouldAutorotateToInterfaceOrientation:interfaceOrientation];
     return YES;
}

2. You can register the orientation notification in LandscapeOverviewViewController