Question

In many situation need to rotate the controller and is not working.
Right now I have the inverse of the problem: it is rotating, and I want to disable.

In that ViewController I have this:

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

but it is auto-rotating, because not this UIViewController is asked, but his parent in UI tree. Maybe that is the problem. The root controller must return Yes for all cases, because there are a few other UIViewControllers on the stack, which has / must have Portait / Landscape support.

I can’t / don’t want to touch other parts, because … there are several reasons, for eg: the app is huge, with lot of know bugs and I don’t want to make 1 and test it for 1 week, other is the deadline.

Please don’t suggest it shouldn’t be like this and must rewritten. I know.

How to deal with this controller to force Portait ?

Please read the bolded text too: can’t force the whole app to support only Portait for 1 view controller, there are many on stack!

Answer 1

detect the Landscape rotation and rotate to Portait:

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{ 

    UIInterfaceOrientation appOrientation = [UIApplication sharedApplication].statusBarOrientation;
    float width = self.view.bounds.size.width;
    float height = self.view.bounds.size.height;
    //NSLog(@"width %3.0f, height: %3.0f", width, height);

    if((fromInterfaceOrientation == UIInterfaceOrientationPortrait || fromInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)){
        // if is rotated from Portait:
        if((appOrientation == UIInterfaceOrientationLandscapeLeft || appOrientation == UIInterfaceOrientationLandscapeRight)){
            // to Landscape:
            CGAffineTransform transform = self.view.transform;
            transform = CGAffineTransformRotate(transform, -(M_PI / 2.0));
            self.view.transform = transform;            

            [self.view setBounds:CGRectMake(0, 0, height, width)];
        }
    }
    else {
        // it is rotated from Landscape:
        if((appOrientation == UIInterfaceOrientationPortrait || appOrientation == UIInterfaceOrientationPortraitUpsideDown)){
            // to Portrait:            
            CGAffineTransform transform = self.view.transform;
            transform = CGAffineTransformRotate(transform, +(M_PI / 2.0));
            self.view.transform = transform;            

            [self.view setBounds:CGRectMake(0, 0, height, width)];
        }
    } 
}

it isn’t the best programming paradigm, but it does the trick.

Somebody write similar like tis to accept his answer, or write a better method, if you can!