Popover created with simple navigation controller and view controller subclasses.

####How does it work?

1. Create subclasses of SYPopoverViewController, add your subviews to popoverView and position them inside:

    - (void)updateFramesAndAlphas
    {
    	[super updateFramesAndAlphas];
    	// here the self.popoverView.frame is up to date
    }
   

2. You use SYPopoverNavigationController to present subclasses of SYPopoverViewController

    -(void)presentAsPopoverFromViewController:(SYPopoverViewController *)viewController animated:(BOOL)animated;
   

3. You can decide to use a transparent background (iOS 7+) with something like

    [popoverNavController setBackgroundsColor:[UIColor clearColor]]
   

4. You know and control when a popover will be closed using the delegate methods

    -(BOOL)popoverNavigationControllerShouldDismiss:(SYPopoverNavigationController *)popoverNavigationController;
    -(void)popoverNavigationControllerWillDismiss:(SYPopoverNavigationController *)popoverNavigationController animated:(BOOL)animated;
    -(void)popoverNavigationControllerWillPresent:(SYPopoverNavigationController *)popoverNavigationController animated:(BOOL)animated;
   

5. You define the size a view controller will have

    BOOL showSmallMenu = ....
    
    [popoverVC setPopoverSizeBlock:^(BOOL iPad, BOOL iPhoneSmallScreen) {
    	
    	// don't need height > width
    	if(showSmallMenu)
    		return CGSizeMake(300, 300);
    
    	if(iPad) 
    		return CGSizeMake(300, 600);
    		
    	// iPhone and iPods with 3inches screens
    	if(iPhoneSmallScreen)
    		return CGSizeMake(300, 440);
    		
    	// Other devices
    	return CGSizeMake(300, 500);
    }];
   

Use it as you like in every project you want, redistribute with mentions of my name and don't blame me if it breaks :)

-- dvkch