Xcode: How To Create A PopUp View Controller That Appears In Another View Controller

Question

Basically what I am trying to figure out to do is, say I have one View Controller, called V1, that has a regular view inside it and a button. Now, when you tap that button, I want that button to create an action that pop-ups another View Controller, called V2, within the same view controller, V1.

V2 will be reduced in size some so that it does not fill the entire screen, but you can still see the first layer which is V1 behind V2. So basically, you never really leave V1. I hope this makes sense for what I'm trying to do. I know the MTV app has this functionity. An image of what I'm talking about is here: https://docs.google.com/leaf?id=0BzlCAVXRsIPcNWUxODM2MDAtNDE3OS00ZTc4LTk5N2MtZDA3NjFlM2IzNmZk&hl=en_US

Sample code or an example is what I'm looking for as well.

Thanks

Answer 1

You can create such view by setting appropriate property type of modalPresentationStyle. See my example below:

UIViewController *V2 = [[UIViewController alloc] init];
V2.modalPresentationStyle = UIModalPresentationFormSheet;
V2.modalTransitionStyle = UIModalTransitionStyleCoverVertical;     
[V1 presentViewController:V2 animated:YES completion:nil];
V2.view.superview.frame = CGRectMake(0, 0, 540, 620); //it's important to do this after presentModalViewController
V2.view.superview.center = V1.view.center;
[V1 release];