4.0.0 androidx.recyclerview recyclerview 1.0.0 aar Android Support RecyclerView v7 Android Support RecyclerView v7 http://developer.android.com/tools/extras/support-library.html 2014 The Apache Software License, Version 2.0 http://www.apache.org/licenses/LICENSE-2.0.txt repo The Android Open Source Project scm:git:https://android.googlesource.com/platform/frameworks/support http://source.android.com androidx.annotation annotation 1.0.0 compile androidx.core core 1.0.0 aar compile androidx.legacy legacy-support-core-ui 1.0.0 aar compile