什么时候在iPhone上使用UIView与UIViewController？ [英] When to use a UIView vs. a UIViewController on the iPhone?

问题描述

我总是想知道什么时候在iPhone上使用UIView和UIViewController。

我理解你不应该使用UIViewController，除非它是一个

例如，我想建立一个模态覆盖 - 一个屏幕将滑入当前屏幕的位置。如果这种模态覆盖是全屏的，应该是一个UIViewController？最后一次我建立这样的东西，我子类化了UIViewController，但现在我想知道是否正确。

解决方案

a href =https://developer.apple.com/library/content/featuredarticles/ViewControllerPGforiPhoneOS/index.html =nofollow noreferrer> iOS控制器编程指南：

视图控制器最重要的角色是管理视图层次，每个视图控制器都有一个根视图，包含所有视图控制器的内容。

有两种类型的视图控制器：

• 内容视图控制器管理应用程序内容的离散部分，是您创建的主要视图控制器类型。


• 容器视图控制器从其他视图控制器（称为子视图控制器）收集信息，并以便于导航或以不同方式显示这些视图控制器的内容。

大多数应用程序是两种类型的视图控制器的混合。

I have always sort of wondered when to use a UIView vs. a UIViewController on the iPhone.

I understand that you shouldn't use a UIViewController unless it's a full-screen view, but what other guidelines are there?

For example, I want to build a modal overlay - a screen that will slide into place over the current screen. If this modal overlay is full-screen, should it be a UIViewController? The last time I built something like this, I subclassed UIViewController, but now I wonder if that was correct.

解决方案

From Apple's View Controller Programming Guide for iOS:

"The most important role of a view controller is to manage a hierarchy of views. Every view controller has a single root view that encloses all of the view controller’s content. To that root view, you add the views you need to display your content."

Also:

"There are two types of view controllers:

• Content view controllers manage a discrete piece of your app’s content and are the main type of view controller that you create.
• Container view controllers collect information from other view controllers (known as child view controllers) and present it in a way that facilitates navigation or presents the content of those view controllers differently.

Most apps are a mixture of both types of view controllers."

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