how to hide Tab bar Controller programmatically?

Question

is it possible to hide it with animation ?

Answer 1

A UITabBar inherits from UIView, so you can hide it and animate it like you would with a standard UIView.

- (void) hideTheTabBarWithAnimation:(BOOL) withAnimation {
    if (NO == withAnimation) {
        [theTabBar setHidden:YES];
    } else {
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDelegate:nil];
        [UIView setAnimationDuration:0.75];

        [theTabBar setAlpha:0.0];       

        [UIView commitAnimations];
    }
}