控制器的生命周期方法-优快云博客

本文链接：https://blog.youkuaiyun.com/u010254841/article/details/51184051

本文详细介绍了iOS应用中视图控制器的生命周期方法，包括viewDidLoad、viewWillAppear、viewDidAppear、viewWillDisappear及viewDidDisappear等关键函数的作用与使用场景。

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/**
view加载完毕
*/
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    //    self.tabBarItem.badgeValue = @"10";
    NSLog(@"%@ %s",self.class,__FUNCTION__);//类名，方法名

}

/**
view即将显示到window上
*/
- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    NSLog(@"%@ %s",self.class,__FUNCTION__);
}

/**
view显示完毕（已经到窗口）
*/
- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    NSLog(@"%@ %s",self.class,__FUNCTION__);//类名，方法名
}

/**
view即将从window上移除
*/
- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
    NSLog(@"%@ %s",self.class,__FUNCTION__);//类名，方法名

}

/**
view从window上完全移除
*/
- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];
    NSLog(@"%@ %s",self.class,__FUNCTION__);//类名，方法名

}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}