How to set device (UI) orientation programmatically?

Question

Would like everything on the screen (UI) to be able to rotate from landscape left to right or vica versa.

How do I go about doing this? Is this private?

I know that

-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {}

lets you say which orientations the UI can be, but is there a way to force only one at a time?

Cheers

Answer 1

In iOS [[UIDevice currentDevice] setDeviceOrientation:UIDeviceOrientationSomeOrientation] method is absent. But we can rotate a view with status bar, for this:

- (void)showAlbum {
    // check current orientation
    if ([[UIApplication sharedApplication] statusBarOrientation] != UIInterfaceOrientationLandscapeLeft) {
        // no, the orientation is wrong, we must rotate the UI
        self.navigationController.view.userInteractionEnabled = NO;
        [UIView beginAnimations:@"newAlbum" context:NULL];
        [UIView setAnimationDelegate:self];
        // when rotation is done, we can add new views, because UI orientation is OK
        [UIView setAnimationDidStopSelector:@selector(addAlbum)];
        // setup status bar
        [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft  animated:NO];
        // rotate main view, in this sample the view of navigation controller is the root view in main window
        [self.navigationController.view setTransform: CGAffineTransformMakeRotation(M_PI / 2)];
        // set size of view
        [self.navigationController.view setFrame:CGRectMake(0, 0, 748, 1024)];
        [UIView commitAnimations];
    } else {
        [self addAlbum];
    }

}