AppBarLayout主题来自..\sdk\extras\android\support\design\res\values\styles.xml
<style name="Widget.Design.AppBarLayout" parent="android:Widget"> <item name="elevation">@dimen/design_appbar_elevation</item> <item name="android:background">?attr/colorPrimary</item> </style>
只需要在项目的相应styles.xml文件中重写该样式,即可去除阴影:
<style name="Widget.Design.AppBarLayout" parent="android:Widget"> <item name="elevation">0dp</item> <item name="android:background">?attr/colorPrimary</item> </style>