initWithCoder:(NSCoder *)aDecoder： 加載xib胶坠，storyboard钙态，純代碼用不到
loadView:加載view
viewDidLoad：view加載完畢
viewWillAppear：控制器的view將要顯示
viewWillLayoutSubviews：控制器的view將要布局子控件
viewDidLayoutSubviews：控制器的view布局子控件完成
這期間系統(tǒng)可能會多次調(diào)用viewWillLayoutSubviews、 viewDidLayoutSubviews 倆個方法
viewDidAppear:控制器的view完全顯示
viewWillDisappear：控制器的view即將消失的時候
這期間系統(tǒng)也會調(diào)用viewWillLayoutSubviews 、viewDidLayoutSubviews兩個方法
viewDidDisappear：控制器的view完全消失的時候
didReceiveMemoryWarning 當(dāng)app收到內(nèi)存警告的時候會發(fā)消息給視圖控制器。
viewWillUnload：（iOS6廢除）
viewDidUnload：（iOS6廢除）

總結(jié)：
整個控制器聲明周期：
viewDidLoad -> viewWillAppear -> viewWillLayoutSubviews -> viewDidLayoutSubviews -> viewDidAppear -> viewWillDisappear -> viewDidDisappear

image.png

Demo

控制器1：（跳轉(zhuǎn)到控制器2代碼類似）

@interface ViewController ()
@property (nonatomic, assign)NSInteger count;
@end

@implementation ViewController
- (instancetype)init {
    
    self = [super init];
    if (self) {
        self.count = 0;
    }
    return self;
}

- (void)loadView {
    [super loadView];
    NSLog(@"ViewController%s------%ld", __func__, (long)self.count);
    self.count++;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    NSLog(@"ViewController%s------%ld", __func__, (long)self.count);
    self.count ++;
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    self.count++;
    NSLog(@"ViewController%s------%ld", __func__, (long)self.count);
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    self.count++;
    NSLog(@"ViewController%s------%ld", __func__, (long)self.count);
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    self.count++;
    NSLog(@"ViewController%s------%ld", __func__, (long)self.count);
}

- (void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
    self.count++;
    NSLog(@"ViewController%s------%ld", __func__, (long)self.count);
}

- (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
    self.count++;
    NSLog(@"ViewController%s------%ld", __func__, (long)self.count);
}

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    self.count++;
    NSLog(@"ViewController%s------%ld", __func__, (long)self.count);
}


- (IBAction)buttonClick:(id)sender {
    
    Test1ViewController *test = [[Test1ViewController alloc] init];
    [self.navigationController pushViewController:test animated:YES];
}

打印結(jié)果：

image.png

image.png

• push的時候生命周期：

  
  
  image.png

• pop的時候生命周期：

  
  
  image.png

參考文章：
http://www.reibang.com/p/42eb5a930d66
http://www.cocoachina.com/cms/wap.php?action=article&id=23326
iOS系統(tǒng)中導(dǎo)航欄的轉(zhuǎn)場解決方案與最佳實踐