如何快速将Android Support Library项目升级到AndroidX

项目名右击 → Refactor → Migrate to AndroidX

有些项目会报错:
you need to have compileSdk set to at least 28 in your module build.gradle to migrate to AndroidX.The gradle plugin version in your project build.gradle file needs to be set to at least com.android.tools.build:gradle:3.2.0 in order to migrate to AndroidX.
翻译一下:
要迁移到Androidx，需要在module build.gradle中将compilesdk设置为至少28。project build.gradle文件中的gradle插件版本需要设置为至少com.android.tools.build:gradle:3.2.0才能迁移到Androidx。

修改一下：

build.gradle（module app）将compilesdk设置为至少28

project build.gradle文件中的gradle插件版本需要设置为至少com.android.tools.build:gradle:3.2.0