set interface orientation on iPhone private API

问题:

Can anyone confirm that [[UIDevice currentDevice] setOrientation:UIDeviceOrientationPortrait]; will get your app rejected by Apple.

Is there a good replacement available?

回答1:

[[UIDevice currentDevice] setOrientation:UIInterfaceOrientation] is a private API, you can find that is signature is only in read-only (see here).

If you want set the device orientation to Portrait or other mode you should override the shouldAutorotateToInterfaceOrientation:

-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return (interfaceOrientation == UIDeviceOrientationPortrait);
}

回答2:

Yes you'll get rejected.

You can change the frame and apply a transformation to the key window, and change the status bar orientation (which is public) to simulate changing the orientation.

回答3:

You can add UIInterfaceOrientation in your app plist

回答4:

You can try this code. It works perfectly on my apps

UIApplication* application = [UIApplication sharedApplication];
if (application.statusBarOrientation != UIInterfaceOrientationPortrait)
{
    AppDelegate* app = [[UIApplication sharedApplication] delegate];
    UIViewController *c = [[UIViewController alloc]init];
    [app.viewController presentModalViewController:c animated:NO];
    [app.viewController dismissModalViewControllerAnimated:NO];
    [c release];
}

where app.viewController is the rootViewController of the app