控制器的生命周期

• 也就是控制器view的生命周期

 

// 自定义控制器view，这个方法只有实现了才会执行
- (void)loadView
{
    self.view = [[UIView alloc] init];
    self.view.backgroundColor = [UIColor orangeColor];
}
// view是懒加载，只要view加载完毕就调用这个方法
- (void)viewDidLoad
{
    [super viewDidLoad];

    NSLog(@"%s",__func__);
}

// view即将显示
- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    NSLog(@"%s",__func__);
}
// view即将开始布局子控件
- (void)viewWillLayoutSubviews
{
    [super viewWillLayoutSubviews];

    NSLog(@"%s",__func__);
}
// view已经完成子控件的布局
- (void)viewDidLayoutSubviews
{
    [super viewDidLayoutSubviews];

    NSLog(@"%s",__func__);
}
// view已经出现
- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];

    NSLog(@"%s",__func__);
}
// view即将消失
- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];

    NSLog(@"%s",__func__);
}
// view已经消失
- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];

    NSLog(@"%s",__func__);
}
// 收到内存警告
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];

    NSLog(@"%s",__func__);
}
// 方法已过期，即将销毁view
- (void)viewWillUnload
{

}
// 方法已过期，已经销毁view
- (void)viewDidUnload
{

}