UIViewController life cycle

Question

Result:

2014-05-12 11:17:24.891 viewController[2206:60b] init

2014-05-12 11:17:24.910 viewController[2206:60b] loadView

2014-05-12 11:17:24.911 viewController[2206:60b] viewDidLoad!

2014-05-12 11:17:24.912 viewController[2206:60b] viewWillAppear

2014-05-12 11:17:24.916 viewController[2206:60b] dealloc

2014-05-12 11:17:24.982 viewController[2206:60b] viewDidAppear

Why dealloc method between viewWillAppear method and viewDidAppear method?

 - (id)init
{
    if (self = [super init]) {

        NSLog(@"init");
    }
    return self;
}

- (void)loadView
{
    NSLog(@"loadView");
    [super loadView];
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSLog(@"viewDidLoad!");
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    NSLog(@"viewWillAppear");
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    NSLog(@"viewDidAppear");
}

- (void)dealloc
{
    NSLog(@"dealloc");
    [super dealloc];
}

Answer 1

From your comments:

The method dealloc log self address was changed! – user3349116

You're seeing logs from different instances of the view controller. Include self in your logs when you're trying to trace activity like this. And make sure not to break the view controller while you're doing it (your loadView implementation will probably mean you have nothing to display on the screen).

In any case, the view controller life cycle is well documented and in most cases pretty obvious.