2.1.3升级为3+，无法预览问题解决 

<!-- Base application theme. -->
<style name="AppTheme" parent="Base.Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>
加Base即可
posted @ 2018-10-01 17:55  七月的四字  阅读(105)  评论(0)  编辑  收藏  举报