iOS中场景和视图之间的区别 [英] Difference between a Scene and a View in iOS

问题描述

我是iOS新手我无法理解场景和视图之间的区别。不幸的是Apple的文档没有帮助我。我看到一个场景就是你在屏幕上看到的。但这不是一个观点吗？这两个可互换的术语是？如果没有，那么功能和最佳实践有何区别？ ViewController如何发挥作用？

I'm new to iOS I'm having trouble understanding the difference between scene and a view. Unfortunately Apple's documentation isn't helping me. I read that a scene is what you see on the screen. But isn't that what a view is? Are these two interchangeable terms? If not what are the differences, both functionality and best practice? How does a ViewController come into play for both of these?

非常感谢任何解释或链接。

Any explanations or links are much appreciated.

推荐答案

简单来说：

A UIView 是一个显示在屏幕上的矩形区域。

A UIView is a rectangular area that is displayed on the screen.

此时屏幕上显示的一组视图。

A collection of Views displayed on the screen at the moment.

在下图中，蓝色区域和黄色区域是视图，而整个屏幕是ViewController。

In the following image, blue area and yellow area are Views, whereas the entire screen is a ViewController.

ViewController是特定的一部分序列。

A ViewController which is a part of a specific sequence.

但是，技术定义略有不同：

However, the technical definitions are a little different:

UIIView是CALayer的包装器。它包含一系列子视图，这意味着它本身就是一组视图。您可以将其想象为树结构。

A UIIView is a wrapper to CALayer. It holds an array of subviews which implies that it's a collection of views by itself. You can imagine this as a tree structure.

ViewController是一个控制器，它包含对根视图。
这样，您可以遍历控制器中的叶节点或任何子视图。

A ViewController is a controller which holds a reference to the root view. This way, you can traverse the leaf node or any subview from the controller.

场景是故事板的一个上下文中ViewController的另一个术语。

"Scene" is another term for a ViewController in one context of storyboard.

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