zoukankan      html  css  js  c++  java
  • ViewController之iOS5.1

     ViewController之iOS5.1

    1.You never directly assign the views to the window. Instead, you assign a view controller to the window, and the view controller automatically adds its view to the window。

    2.Every view is controlled by only one view controller.

    3.content view controllers and container view controllers

    4.In iOS 5.0 and later, custom UIViewController subclasses can also act as container view controllers. A container view controller manages the presentation of content of other view controllers it owns, also known as its child view controllers. A child’s view can be presented as-is or in conjunction with views owned by the container view controller.

    Pay Attention

    The addChildViewController: method automatically calls the willMoveToParentViewController: method of the view controller to be added as a child before adding it, but it does not call the didMoveToParentViewController: method. Your container view controller class must call the didMoveToParentViewController: of the child view controller after the transition to the new child is complete or, if there is no transition, immediately after calling the addChildViewController: method.

    Likewise, the container view controller must call the willMoveToParentViewController: method before calling the removeFromParentViewController method. The removeFromParentViewController method automatically calls the didMoveToParentViewController: method of the child view controller.

     

     

     

  • 相关阅读:
    d3.js了解
    java常用验证码
    连接数据库的配置文件
    MD5加密的使用
    ssm下载文件
    Ajax基于rest风格上传图片
    web常见页面错误整理
    前后端一起用cookie来保存密码
    通用mapper插件
    ssm的maven依赖,直接复制可以使用
  • 原文地址:https://www.cnblogs.com/tekkaman/p/2647444.html
Copyright © 2011-2022 走看看