#pragma mark --- life circle

// 非storyBoard(xib或非xib)都走這個(gè)方法
- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    NSLog(@"%s", __FUNCTION__);
    if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
    
    }
    return self;
}

// 如果連接了串聯(lián)圖storyBoard 走這個(gè)方法
- (instancetype)initWithCoder:(NSCoder *)aDecoder {
     NSLog(@"%s", __FUNCTION__);
    if (self = [super initWithCoder:aDecoder]) {
        
    }
    return self;
}

// xib 加載 完成
- (void)awakeFromNib {
    [super awakeFromNib];
     NSLog(@"%s", __FUNCTION__);
}

// 加載視圖(默認(rèn)從nib)
- (void)loadView {
    NSLog(@"%s", __FUNCTION__);
    self.view = [[UIView alloc] initWithFrame:[UIScreen mainScreen].bounds];
    self.view.backgroundColor = [UIColor redColor];
}

//視圖控制器中的視圖加載完成，viewController自帶的view加載完成
- (void)viewDidLoad {
    NSLog(@"%s", __FUNCTION__);
    [super viewDidLoad];
}


//視圖將要出現(xiàn)
- (void)viewWillAppear:(BOOL)animated {
    NSLog(@"%s", __FUNCTION__);
    [super viewWillAppear:animated];
}

// view 即將布局其 Subviews
- (void)viewWillLayoutSubviews {
    NSLog(@"%s", __FUNCTION__);
    [super viewWillLayoutSubviews];
}

// view 已經(jīng)布局其 Subviews
- (void)viewDidLayoutSubviews {
    NSLog(@"%s", __FUNCTION__);
    [super viewDidLayoutSubviews];
}

//視圖已經(jīng)出現(xiàn)
- (void)viewDidAppear:(BOOL)animated {
    NSLog(@"%s", __FUNCTION__);
    [super viewDidAppear:animated];
}

//視圖將要消失
- (void)viewWillDisappear:(BOOL)animated {
    NSLog(@"%s", __FUNCTION__);
    [super viewWillDisappear:animated];
}

//視圖已經(jīng)消失
- (void)viewDidDisappear:(BOOL)animated {
    NSLog(@"%s", __FUNCTION__);
    [super viewDidDisappear:animated];
}

//出現(xiàn)內(nèi)存警告  //模擬內(nèi)存警告:點(diǎn)擊模擬器->hardware-> Simulate Memory Warning
- (void)didReceiveMemoryWarning {
    NSLog(@"%s", __FUNCTION__);
    [super didReceiveMemoryWarning];
}

// 視圖被銷毀
- (void)dealloc {
    NSLog(@"%s", __FUNCTION__);
}

原文地址