With androidx.appcompat library FirebaseRecyclerAdapter not working
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When upgrading build tool version and target SDK version to API 28 we have to use new support libraries with androidx prefix. I have replaced all libs with new libs here they are // Libs for newer API 28 implementation 'androidx.appcompat:appcompat:1.0.2' implementation 'androidx.constraintlayout:constraintlayout:1.1.3' implementation 'com.google.android.material:material:1.1.0-alpha01' implementation 'androidx.cardview:cardview:1.0.0' Now FirebaseRecyclerAdapter from the import below, asking me to extend my ViewHolder class from android.support.v7 . import com.firebase.ui.database.FirebaseRecyclerAdapter; And has this suggestion Type parameter 'com.domain_name.app_name.FriendsFragment.FindFriendsViewHolder' is not within its bo