Question

How to lock changing orientation on device?

I tried to use

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

and this

- (void)viewDidAppear:(BOOL)animated
{
    [self shouldAutorotateToInterfaceOrientation: UIInterfaceOrientationLandscapeRight];
    [super viewDidAppear:animated];
}

but nothing work when i use device. When app runs on simulator it works great.

simulator have iOS 6 and device 5.1.1. What i’m doing wrong?

Answer 1

Try this:

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

The method returns YES or NO answering the question “should I rotate to this orientation: interfaceOrientation”.
So you should return YES or NO – UIInterfaceOrientationLandscapeRight is not a BOOL.
But you can use a comparison to return the BOOL like described above.