iOS:main.m AppDelegate.h AppDelegate.m

main.m

#import <UIKit/UIKit.h>

#import "AppDelegate.h"

int main(int argc, char * arv[])
{
    @autoreleasepool {
        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
    }
}

AppDelegate.h

#import <UIKit/UIKit.h>

@interface AppDelegate : UIResponder 

@property (strong, nonatomic) UIWindow *window;

@end

AppDelegate.m

#import "AppDelegate.h"

@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application
{
}

-(void)applicationDidEnterBackground:(UIApplication *)application
{
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
}

- (void)applicationWillTerminate:(UIApplication *)application
{
}

@end