Question

I want to push a view controller onto the navigation stack but I don’t want its view to initially appear – in other words I want the view that was visible when the view controller is push to still be visible.

I tried setting the view controller’s view’s alpha value to 0.0 which I thought would make it transparent. But instead what is happening is that when I push the view controller on the the stack the screen is white. If I set the alpha to 1.0 then the view controller’s view appears as expected.

Why is it white and not transparent?

Answer 1

you will have to add the view to the viewcontrollers manually
Not pushing it
For example do the following

YourViewController *vc = [[YourViewController alloc] init];
[self.view addSubview:vc.view];

vc.view.alpha = 0.0;

//Animate Here

vc.view.alpha = 1.0;
//Commit Animate Here

Please not that you will have to do some additional coding to implement the release of the vc, since now you have retained vc.view you will not be able to release vc easily,

Another solution is instead of implementing the second view as a viewcontoller implement it as uiview, and the xib class will be view and not uiviewcontroller