Drop Down UIView With Buttons

Okay, so I want to make a menu that expands down at the current touch location. I achieve this by adding my menuView with a height of 1 and then changing the height to my desired one like this:

[UIView beginAnimations:NULL context:nil];          
CGRect fullRect;
fullRect = CGRectMake(menuView.frame.origin.x, menuView.frame.origin.y, 290, 180);
menuView.frame = fullRect;
[UIView commitA开发者_JS百科nimations];

Now the problem is that there are 4 buttons in this menuView and these buttons appear first and then the menuView expands down under them. Any ideas how to make the buttons appear with the menuView and not before it?

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You have to set menuView.clipsToBounds = YES so the buttons are not shown outside the bounds of your menuView while it is expanding.

I would also add the following to have a fade-in effect for your buttons.

button1.alpha = 0.0; // Do this for each button before the [UIView beginAnimations];

button1.alpha = 1.0; // Do this during the animation block. 

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I would use a Block animation instead. That way, you can make the buttons appear during or after the animation easily. Try something like:

[UIView animateWithDuration:1.0
                       animations:^{ 
                         CGRect newRect = menuView.frame;
                         menuView.size.height += 289;
                         menuView.frame = newRect;
                       }
                       completion:^(BOOL finished){

                         [UIView animateWithDuration:0.1
                                          animations:^{ 
                                            button.hidden = NO;
                                          } 
                                          completion:^(BOOL finished){
                                            ;
                                          }];
                       }];

This will make the button stop hiding at the end of the animation. Of course, you could add more blocks in the completion block to handle more animations, and it is easy to customize this. Hope that helps!