ClockAppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    window = [[UIWindow alloc] initWithFrame:[ [UIScreen mainScreen] bounds]];
   
    [window makeKeyAndVisible];
    
    //init du modèle
    model = [ClockModel new];

    
    //init de la vue
    ClockView *view = [[ClockView alloc]initWithFrame:CGRectMake(10, 30,360.0, 20.0)];
    view.controller=self;
    
    //Ajout de la vue clockView
    [window addSubview:view];
      
    [view release];
    
    //init controlleur (call pendulumSwing chaque seconde)
    self.pendulum = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(pendulumSwing:) userInfo:nil repeats:YES];
    
    return YES;
}


-(void)pendulumSwing:(NSTimer*)theTimer  //Met à jour les propriétés de l'objet clockModel à chaque seconde
{
   
    NSDateComponents *comp = [[NSCalendar currentCalendar]components:(NSHourCalendarUnit|NSMinuteCalendarUnit|NSSecondCalendarUnit)fromDate:[NSDate date]];
    
    [self setValue:[NSNumber numberWithInt:[comp hour]] forKeyPath:@"model.hour"];
    [self setValue:[NSNumber numberWithInt:[comp minute]] forKeyPath:@"model.minute"];
    [self setValue:[NSNumber numberWithInt:[comp second]] forKeyPath:@"model.second"];
}