Android Studio 4.0 ：This project uses AndroidX dependencies, but the 'android.useAndroidX' property is not enabled.

This project uses AndroidX dependencies, but the 'android.useAndroidX' property is not enabled.

解决方案：

打开 gradle.properties

输入代码：

android.useAndroidX=true
android.enableJetifier=true

点击 Sync now