AppDelegate.lua

waxClass{"AppDelegate", protocols = {"UIApplicationDelegate", "CAAnimationDelegate"}}

function applicationDidFinishLaunching(self, application)
 local frame = UIScreen:mainScreen():bounds()
 self.window = UIWindow:initWithFrame(frame)
 self.window:setBackgroundColor(UIColor:orangeColor())

 local label = UILabel:initWithFrame(CGRect(0, 100, 320, 40))
 label:setFont(UIFont:boldSystemFontOfSize(30))
 label:setColor(UIColor:orangeColor())
 label:setText("Hello Lua!")
 label:setTextAlignment(UITextAlignmentCenter)

 local layer = label:layer()
 animation = CABasicAnimation:animationWithKeyPath("opacity")
 animation:setDuration(0.5)
 animation:setRepeatCount(1)
 animation:setAutoreverses(true)
 animation:setFromValue(NSNumber:numberWithFloat(0))
 animation:setToValue(NSNumber:numberWithFloat(1))
 animation:setDelegate(self)
 layer:addAnimation_forKey(animation, "blink")

 self.window:addSubview(label)
 self.window:makeKeyAndVisible()
end

function animationDidStop_finished(self, theAnimation, flag)
 print("animation stopped")
end

ProtocolLoader.h

// Many protocols will work from wax out of the box. But some need to be preloaded.
// If the protocol you are using isn't found, just add the protocol to this object
//
// This seems to be a bug, or there is a runtime method I'm unaware of

#import <Foundation/Foundation.h>
#import <QuartzCore/QuartzCore.h>

@protocol CAAnimationDelegate
@optional
- (void)animationDidStart:(CAAnimation *)theAnimation;
- (void)animationDidStop:(CAAnimation *)theAnimation finished:(BOOL)flag;
@end

@interface ProtocolLoader : NSObject <UIApplicationDelegate, UIWebViewDelegate, UIActionSheetDelegate, UIAlertViewDelegate, UISearchBarDelegate, UITextViewDelegate, UITabBarControllerDelegate, CAAnimationDelegate> {}
@end

@implementation ProtocolLoader
@end