AppDelegate 실행순서

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    NSLog(@"didFinishLaunchingWithOptions");
    NSLog(@"앱이 처음 실행할때");
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application {
    
    NSLog(@"applicationWillResignActive");
    NSLog(@"앱이 밑으로 내려 갔을때");
    
}

- (void)applicationDidEnterBackground:(UIApplication *)application {
    
    NSLog(@"applicationDidEnterBackground");
    NSLog(@"앱이 백그라운드로 실행될때");
}

- (void)applicationWillEnterForeground:(UIApplication *)application {
    
    NSLog(@"applicationWillEnterForeground");
    NSLog(@"백그라운드 였다가 올라왔을때");
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    
    NSLog(@"applicationDidBecomeActive");
    NSLog(@"앱이 처음 실행할때");
    NSLog(@"백그라운드 였다가 올라왔을때");
}

- (void)applicationWillTerminate:(UIApplication *)application {
    
    NSLog(@"applicationWillTerminate");
    NSLog(@"앱이 종료될때");
    [self saveContext];
}