ViewController LifeCycle

ViewController LifeCycle

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

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

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

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

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

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

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

- (void)dealloc {
    NSLog(@"dealloc");

}

2016-05-05 11:40:07.190 test[1286:85451] viewWillDisappear <SKTPDevSettingViewController: 0x7fd1e6042310>

2016-05-05 11:40:07.191 test[1286:85451] viewDidLoad

2016-05-05 11:40:07.192 test[1286:85451] viewWillAppear

2016-05-05 11:40:07.194 test[1286:85451] viewWillLayoutSubviews

2016-05-05 11:40:07.194 test[1286:85451] viewDidLayoutSubviews

2016-05-05 11:40:07.697 test[1286:85451] viewDidDisappear <SKTPDevSettingViewController: 0x7fd1e6042310>

2016-05-05 11:40:07.697 test[1286:85451] viewDidAppear

2016-05-05 11:41:09.691 test[1286:85451] viewWillDisappear

2016-05-05 11:41:09.691 test[1286:85451] viewWillAppear <SKTPDevSettingViewController: 0x7fd1e6042310> 

=== (Back 버튼으로 VC 가 중간에 걸쳐있을 때 여기까지 호출) ==

2016-05-05 11:41:12.394 test[1286:85451] viewDidDisappear

2016-05-05 11:41:12.394 test[1286:85451] viewDidAppear <SKTPDevSettingViewController: 0x7fd1e6042310>

2016-05-05 11:41:12.394 test[1286:85451] dealloc

---

ViewController LifeCycle 상세 

1. initWithCoder:

     When using storyboards, the controller is initialized with this method, not with the init or initWithNibName:bundle: methods.

2. awakeFromNib

3. willMoveToParentViewController:

     The controller that is passed with this call is the UINavigationController.

4. prefersStatusBarHidden

5. preferredStatusBarUpdateAnimation

6. loadView

     UIViewController‘s loadView function assigns all objects with ‘Referencing Outlets’ (aka IBOutlets) in Interface Builder to their corresponding IBOutlet properties. If you need access to these IBOutlet objects in this function, call super first.

7. prepareForSegue:sender:

     This call allows us to inspect the UIStoryboardEmbedSegue that embeds the smaller scene in Scene B’s container view.

8. viewDidLoad

     This method is usually where most of a controller’s set up happens. Note that all of our IBOutlets have been connected, but our views have not yet been laid out.

9. extendedLayoutIncludesOpaqueBars

10. edgesForExtendedLayout

11. viewWillAppear:

12. extendedLayoutIncludesOpaqueBars

13. edgesForExtendedLayout

14. updateViewConstraints

15. viewWillLayoutSubviews

16. viewDidLayoutSubviews

17. Animation

     The animation that transitions from Scene A to Scene B runs. Step 18 does not happen until the animation finishes.

18. viewDidAppear:

19. didMoveToParentViewController:

     This call concludes the process started on step 2. Here we receive the same instance of UINavigationController.

20. updateViewConstraints

21. viewWillLayoutSubviews

22. viewDidLayoutSubviews

---

View Controller 에서 실제 사이즈가 잡히는 시간 테스트 결과값

- (void)viewDidLoad {
    [super viewDidLoad];
    NSLog(@"viewDidLoad : (%f, %f, %f, %f)", _testView.frame.origin.x, _testView.frame.origin.y, _testView.frame.size.width, _testView.frame.size.height);
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    NSLog(@"viewWillAppear : (%f, %f, %f, %f)", _testView.frame.origin.x, _testView.frame.origin.y, _testView.frame.size.width, _testView.frame.size.height);
}

- (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
    NSLog(@"viewWillLayoutSubviews : (%f, %f, %f, %f)", _testView.frame.origin.x, _testView.frame.origin.y, _testView.frame.size.width, _testView.frame.size.height);
}

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    NSLog(@"viewDidLayoutSubviews : (%f, %f, %f, %f)", _testView.frame.origin.x, _testView.frame.origin.y, _testView.frame.size.width, _testView.frame.size.height);
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    NSLog(@"viewDidAppear : (%f, %f, %f, %f)", _testView.frame.origin.x, _testView.frame.origin.y, _testView.frame.size.width, _testView.frame.size.height);
}

- (void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
    NSLog(@"viewDidDisappear : (%f, %f, %f, %f)", _testView.frame.origin.x, _testView.frame.origin.y, _testView.frame.size.width, _testView.frame.size.height);
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];

    NSLog(@"viewWillDisappear : (%f, %f, %f, %f)", _testView.frame.origin.x, _testView.frame.origin.y, _testView.frame.size.width, _testView.frame.size.height);

}

2016-05-05 11:50:16.715 test[2093:158423] viewWillDisappear <SKTPDevSettingViewController: 0x7f8cc27f13b0>

2016-05-05 11:50:16.725 test[2093:158423] viewDidLoad : (40.000000, 131.000000, 240.000000, 128.000000)

2016-05-05 11:50:16.725 test[2093:158423] viewWillAppear : (40.000000, 131.000000, 240.000000, 128.000000)

2016-05-05 11:50:16.728 test[2093:158423] viewWillLayoutSubviews : (40.000000, 131.000000, 240.000000, 128.000000)

2016-05-05 11:50:16.728 test[2093:158423] viewDidLayoutSubviews : (40.000000, 131.000000, 334.000000, 128.000000)

2016-05-05 11:50:17.231 test[2093:158423] viewDidDisappear <SKTPDevSettingViewController: 0x7f8cc27f13b0>

2016-05-05 11:50:17.232 test[2093:158423] viewDidAppear : (40.000000, 131.000000, 334.000000, 128.000000)

2016-05-05 11:50:17.232 test[2093:158423] viewWillLayoutSubviews : (40.000000, 131.000000, 334.000000, 128.000000)

2016-05-05 11:50:17.232 test[2093:158423] viewDidLayoutSubviews : (40.000000, 131.000000, 334.000000, 128.000000)

참고자료

https://bradbambara.wordpress.com/2014/07/31/object-life-cycle-uiviewcontroller/