How to use SFHFHudView

// Create your SFHFHudView object (maybe inside of viewDidLoad:)
HUD = [[SFHFHUDView alloc] initWithFrame:[[UIApplication sharedApplication].keyWindow bounds]];

// Show your HUD
// remember: SFHFHudView is subclass of UIView, not UIView
[HUD setStatusText:@"Doing stuff ..."];
[HUD setShowsStatusLabel:YES];
[HUD startActivityIndicator];
[HUD makeKeyAndVisible];

// Hide your HUD
[HUD stopActivityIndicator];
[HUD resignKeyWindow];
[HUD setHidden:YES];

// Don't forget to make your "normal" window the key window again.
// Otherwise you'll have trouble showing the HUD again
[[[[UIApplication sharedApplication] delegate] window] makeKeyWindow];