Always center UIView

Question

I have a small UIView that should appear always in the center of the screen. This works great for portrait mode but does not in landscape.

To draw the UIView I use:

myView.frame = CGRectMake((visibleArea.size.width - MY_VIEW_WIDTH) / 2, (visibleArea.size.height - MY_VIEW_HEIGHT) / 2, MY_VIEW_WIDTH, MY_VIEW_HEIGHT);
myView.autoresizingMask = (
                            UIViewAutoresizingFlexibleTopMargin |
                            UIViewAutoresizingFlexibleBottomMargin |
                            UIViewAutoresizingFlexibleLeftMargin |
                            UIViewAutoresizingFlexibleRightMargin
                           );

Any ideas what might be missing?

Answer 1

Why not try

myView.center = controller.view.center

Answer 2

Is the app auto rotating?

I mean, what does your -[UIViewController shouldAutorotateToInterfaceOrientation:] method looks like? Do you have an initial and supported orientations in your Info.plist file?

Check also parent's view autoresizesSubviews property.

Answer 3

I created a property to give me the bounds, based on the orientation of the device. (This is in a category on UIScreen.)

- (CGRect)boundsWithRespectToOrientation
{
    CGRect bounds = self.bounds;

    if (UIInterfaceOrientationIsLandscape([[UIApplication sharedApplication] statusBarOrientation]) && bounds.size.height > bounds.size.width)
        bounds = CGRectMake(bounds.origin.x, bounds.origin.y, bounds.size.height, bounds.size.width);
    else if (UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation]) && bounds.size.width > bounds.size.height)
        bounds = CGRectMake(bounds.origin.x, bounds.origin.y, bounds.size.height, bounds.size.width);

    return bounds;
}

Answer 4

Maybe you don't change the orientation of the status bar. If you don't do this, the device thinks that the orientation still portrait, not landscape.