Transparent Background with a Modal UIViewController

I have a dilema, I want to present to the user a semi-transparent view.

I found out by experimenting that if I simply pushed the transparent view to the top of my NavigationController's stack, that it would not render the transparency level I wanted. So I decided to simply add the view as a subview of the current view at the top of the stack.

This solution works, the view below is still visible, and the View is 'semi-modal'. The problem is, if the parent view inherits from UITableViewController (as mine does), then the view I 'push' onto it, does not cover the navigation bar at the top.

I really don't want to get into a situation where I am forced to enable / disable controls on the navigation bar every time I push this view, so I was wondering, if anyone knew of any solutions that I could use so that the view I push onto the UITableViewController will actually 'push over' the navigation bar?

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-2

Have you tried looping over the Modal View Controller's subviews and setting the background color to clear for every view? This is a DFS recursive function.

- (void)setBackgroundToClearForView:(UIView *)view {
    if ([view subviews]) {
        for (UIView *subView in [view subviews]) {
            [self setBackgroundToClearForView:subView];
        }
    }

    if ([view respondsToSelector:@selector(setBackgroundColor:)]) {
        [view performSelector:@selector(setBackgroundColor:)
                   withObject:[UIColor clearColor]];
    }
}

To use it call:

[self setBackgroundToClearForView:self.view];

in viewDidLoad.

answered 2010-04-05T13:45:27.970

Transparent Background with a Modal UIViewController

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