I have main UIView where I display different data. Then I put a button, which displays subview like this:

- (IBAction) buttonClicked: (id) sender
{
     UIView *newView = [[UIView alloc] initWithFrame:CGRectMake(25,25,50,20)];
 UILabel *newLabel = [[UILabel alloc] initWithFrame:CGRectMake(25,25, 50,25)];
 newLabel.text = @"some text";
 [newView addSubview: newLabel];

 [self.view addSubview: newView];
 [newLabel release];
 [newView release];
}

newView appears fine, but it doesn't animate itself any way, it just appears immediately. How can I add some kind of animation when newView appears? Like zoom or slide down or something like that. Is there some simple code?