角度MDC返回"No mixin named mdc-top-app-bar-fill-color"

Question

所以，我正在使用angularCli和Angular-MDC，我想使用styles.scss的第二颜色。在网站上有https://trimox.github.io/angular-mdc-web/#/angular-mdc-web/top-app-app-bar-demo/sass undy mdc-top-app-bar-fill-color($color)我使用并返回No mixin named mdc-top-app-bar-fill-color，下面是我的代码：

component.html

<mdc-top-app-bar class="header-mdc" [mdcElevation]="5">
  <div style="text-align: center">
    <h1>Autonomous</h1>
  </div>
</mdc-top-app-bar>

component.scss

.header-mdc {
  @include mdc-top-app-bar-fill-color($mdc-theme-secondary);
}

styles.scss

$mdc-theme-primary: #6200ee; // primary color
$mdc-theme-secondary: #FFFFFF; // secondary color
@import '~@angular-mdc/theme/material';
body {
  font-family: 'Roboto Thin';
  margin: 0;
  padding-top: 0.1px;
}

错误

@include mdc-top-app-bar-fill-color($mdc-theme-secondary);
          ^
      No mixin named mdc-top-app-bar-fill-color

Answer 1

如果将@import '~@angular-mdc/theme/material';放在component.scss文件的顶部，则应起作用。

这感觉有些不当，我敢肯定有更好的方法。