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UIViewController的生命周期详解求职学习资料

本文介绍了UIViewController的生命周期详解求职学习资料,有助于帮助完成毕业设计以及求职,是一篇很好的资料。

对技术面试,学习经验等有一些体会,在此分享。

前言

在iOS开发中UIViewController扮演者非常重要的角色,它是视图view和数据model的桥梁,通过UIViewController的管理有条不紊的将数据展示在视图上。作为UIKit中最基本的一个类,一般复杂的项目都离不开UIViewController作为基类。所以了解UIViewController的整个生命周期是有必要的。

UIViewController的生命周期

我们先看一下下面有关UIViewController生命周期有关的几个函数:
“`

  • (void)initialize {
    NSLog(@”======== 类初始化方法: initialize =======n”);
    }

  • (instancetype)init {
    self = [super init];
    NSLog(@”======== 实例初始化方法: init =======n”);
    return self;
    }

  • (instancetype)initWithCoder:(NSCoder *)aDecoder {
    self = [super initWithCoder:aDecoder];
    NSLog(@”======== 从归档初始化: initWithCoder:(NSCoder *)aDecoder =======n”);
    return self;
    }

  • (void)loadView {
    [super loadView];
    NSLog(@”======== 加载视图: loadView =======n”);
    }

pragma mark- life cycle

  • (void)viewDidLoad {
    [super viewDidLoad];
    NSLog(@”======== 将要加载视图: viewDidLoad =======n”);
    }

  • (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
    NSLog(@”======== 将要布局子视图: viewWillLayoutSubviews =======n”);
    }

  • (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    NSLog(@”======== 已经布局子视图: viewDidLayoutSubviews =======n”);
    }

  • (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    NSLog(@”======== 收到内存警告: didReceiveMemoryWarning =======n”);
    }

  • (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    NSLog(@”======== 视图将要出现: viewWillAppear:(BOOL)animated =======n”);
    }

  • (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    NSLog(@”======== 视图已经出现: viewDidAppear:(BOOL)animated =======n”);
    }

  • (void)viewWillDisappear:(BOOL)animated {

前言

在iOS开发中UIViewController扮演者非常重要的角色,它是视图view和数据model的桥梁,通过UIViewController的管理有条不紊的将数据展示在视图上。作为UIKit中最基本的一个类,一般复杂的项目都离不开UIViewController作为基类。所以了解UIViewController的整个生命周期是有必要的。

UIViewController的生命周期

我们先看一下下面有关UIViewController生命周期有关的几个函数:
“`

  • (void)initialize {
    NSLog(@”======== 类初始化方法: initialize =======n”);
    }

  • (instancetype)init {
    self = [super init];
    NSLog(@”======== 实例初始化方法: init =======n”);
    return self;
    }

  • (instancetype)initWithCoder:(NSCoder *)aDecoder {
    self = [super initWithCoder:aDecoder];
    NSLog(@”======== 从归档初始化: initWithCoder:(NSCoder *)aDecoder =======n”);
    return self;
    }

  • (void)loadView {
    [super loadView];
    NSLog(@”======== 加载视图: loadView =======n”);
    }

pragma mark- life cycle

  • (void)viewDidLoad {
    [super viewDidLoad];
    NSLog(@”======== 将要加载视图: viewDidLoad =======n”);
    }

  • (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
    NSLog(@”======== 将要布局子视图: viewWillLayoutSubviews =======n”);
    }

  • (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    NSLog(@”======== 已经布局子视图: viewDidLayoutSubviews =======n”);
    }

  • (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    NSLog(@”======== 收到内存警告: didReceiveMemoryWarning =======n”);
    }

  • (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    NSLog(@”======== 视图将要出现: viewWillAppear:(BOOL)animated =======n”);
    }

  • (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    NSLog(@”======== 视图已经出现: viewDidAppear:(BOOL)animated =======n”);
    }

  • (void)viewWillDisappear:(BOOL)animated {

前言

在iOS开发中UIViewController扮演者非常重要的角色,它是视图view和数据model的桥梁,通过UIViewController的管理有条不紊的将数据展示在视图上。作为UIKit中最基本的一个类,一般复杂的项目都离不开UIViewController作为基类。所以了解UIViewController的整个生命周期是有必要的。

UIViewController的生命周期

我们先看一下下面有关UIViewController生命周期有关的几个函数:
“`

  • (void)initialize {
    NSLog(@”======== 类初始化方法: initialize =======n”);
    }

  • (instancetype)init {
    self = [super init];
    NSLog(@”======== 实例初始化方法: init =======n”);
    return self;
    }

  • (instancetype)initWithCoder:(NSCoder *)aDecoder {
    self = [super initWithCoder:aDecoder];
    NSLog(@”======== 从归档初始化: initWithCoder:(NSCoder *)aDecoder =======n”);
    return self;
    }

  • (void)loadView {
    [super loadView];
    NSLog(@”======== 加载视图: loadView =======n”);
    }

pragma mark- life cycle

  • (void)viewDidLoad {
    [super viewDidLoad];
    NSLog(@”======== 将要加载视图: viewDidLoad =======n”);
    }

  • (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
    NSLog(@”======== 将要布局子视图: viewWillLayoutSubviews =======n”);
    }

  • (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    NSLog(@”======== 已经布局子视图: viewDidLayoutSubviews =======n”);
    }

  • (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    NSLog(@”======== 收到内存警告: didReceiveMemoryWarning =======n”);
    }

  • (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    NSLog(@”======== 视图将要出现: viewWillAppear:(BOOL)animated =======n”);
    }

  • (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    NSLog(@”======== 视图已经出现: viewDidAppear:(BOOL)animated =======n”);
    }

  • (void)viewWillDisappear:(BOOL)animated {

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