Flutter中的primaryColor和primarySwatch有什么区别? [英] What is the difference between primaryColor and primarySwatch in Flutter?

问题描述

在Flutter中，可以使用ThemeData类将主题应用于应用程序.但是，此类的两个属性使我感到困惑:primaryColor和primarySwatch.这两个属性之间的区别是什么?什么时候使用另一个属性?谢谢.

In Flutter, one can apply a theme to the app using ThemeData class. But there two propeties of this class that confuses me: primaryColor and primarySwatch. What's the difference between these two properties and when to use one or the other? Thanks.

推荐答案

primarySwatch不是 一个Color. MaterialColor. 这意味着材料应用将使用不同的颜色深浅.

primarySwatch is not a Color. It's MaterialColor. Which means it's a the different shades of a color a material app will use.

primaryColor是这些阴影之一.确切地说，primaryColor通常等于primarySwatch[500].

primaryColor is one of those shades. To be exact, primaryColor is normally equal to primarySwatch[500].

通常最好定义一个primarySwatch而不是primaryColor.因为某些材质组件可能对阴影，边框，...

It is usually better to define a primarySwatch instead of primaryColor. Because some material components may use a different shade of the primaryColor for things such as shadow, border, ...

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