iPhone SDK: Orientation (Landscape and Portrait views)

Question

Okay, I've got my normal app which is in portrait mode. I can force my app to go to landscape mode for a view (using navigationcontroller and viewcontroller) like this:

- (void)viewWillAppear:(BOOL)animated {
    [[UIDevice currentDevice] setOrientation:UIInterfaceOrientationLandscapeRight];
}

But then when I go back to the main menu (tableview) it goes straight back to portrait. I try this code:

- (void)viewWillAppear:(BOOL)animated {
    [[UIDevice currentDevice] setOrientation:UIInterfaceOrientationPortrait];
}

But that doesn't work..

Any ideas?

Answer 1

Take a look at the function shouldAutorotateToInterfaceOrientation: in the UIViewController class. This function returns YES if the orientations are supported by your UIView. If you return YES only to the landscape orientation, the iPhone will automatically be put in that orientation.

The following code should do it. Put it in the UIViewController that controls the view that you want to put in landscape mode.

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationLandscape);
}

Answer 2

To get this to work, I added this to the rootviewcontroller:

- (void)viewWillAppear:(BOOL)animated {
    [[UIDevice currentDevice] setOrientation:UIInterfaceOrientationPortrait];

}

This seems to be working now.