建立专案时发生错误：资源连结失败

Question

我收到此错误

Android resource linking failed
Output:  error: resource style/CardView (aka [packagename].qa:style/CardView) not found
error: style attribute 'attr/cardElevation (aka (packagename).qa:attr/cardElevation)' not found.

错误在这里显示

</style>
    <style name="Widget.MaterialComponents.CardView" parent="CardView">
    <item name="cardElevation">@dimen/mtrl_card_elevation</item>
    <item name="cardBackgroundColor">?attr/colorBackgroundFloating</item>
  </style> 

我尝试了clean，invalid cache and restart，更新了android studio，但仍然显示错误

Answer 1

检查所需的调光（如果存在），或使用“？attr”获得的风格