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  • IOS 杂笔-8(loadView、viewDidLoad、viewWillAppear、viewDidAppear等简介)

    loadView; 
    This is where subclasses should create their custom view hierarchy if they aren't using a nib. Should never be called directly.
    这是当他们没有正在使用nib视图页面,子类将会创建自己的自定义视图层。绝不能直接调用。

    ------------
    viewDidLoad;
    Called after the view has been loaded. For view controllers created in code, this is after -loadView. For view controllers unarchived from a nib, this is after the view is set.
    在视图加载后被调用,如果是在代码中创建的视图加载器,他将会在loadView方法后被调用,如果是从nib视图页面输出,他将会在视图设置好后后被调用。

    ------------

     viewWillAppear: 

    Called when the view is about to made visible. Default does nothing
    视图即将可见时调用。默认情况下不执行任何操作

    ------------

    viewDidAppear: 
    Called when the view has been fully transitioned onto the screen. Default does nothing
    视图已完全过渡到屏幕上时调用

    ------------
    viewWillDisappear:
    Called when the view is dismissed, covered or otherwise hidden. Default does nothing
    视图被驳回时调用,覆盖或以其他方式隐藏。默认情况下不执行任何操作

    ------------
    viewDidDisappear:
    Called after the view was dismissed, covered or otherwise hidden. Default does nothing
    视图被驳回后调用,覆盖或以其他方式隐藏。默认情况下不执行任何操作

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  • 原文地址:https://www.cnblogs.com/xubaoaichiyu/p/5297638.html
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