AndroidX的配置步骤
1.在项目的中gradle.properties文件中加入android.useAndroidX=trueandroid.enableJetifier=true2.菜单栏 Refactor -> Migrate to AndroidX...3.替换依赖例如：implementation "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}" 替换为：implementat
