该项目使用了 jetpack 中以下组件作为练习： LifeCycle： implementation 'android.arch.lifecycle:extensions:2.2.0'
Navigation： implementation 'androidx.navigation:navigation-fragment:2.3.1' implementation 'androidx.navigation:navigation-ui:2.3.1'
ViewMode： implementation 'androidx.lifecycle:lifecycle-viewmodel:2.3.0-beta01'
LiveData、DataBinding
Room: implementation 'androidx.room:room-runtime:2.3.0-alpha03' annotationProcessor 'androidx.room:room-compiler:2.3.0-alpha03'
WrokManager: implementation "androidx.work:work-runtime:2.4.0"
Paging: implementation 'androidx.paging:paging-runtime:2.1.2'