MIGRATING TO ANDROIDX

 MIGRATING TO ANDROIDX

In android studio:

    Click on Refactor -> Migrate to AndroidX

In xml:

 Replace with below:

android.support.design.widget.AppBarLayout -> com.google.android.material.appbar.AppBarLayout

android.support.v7.widget.Toolbar -> androidx.appcompat.widget.Toolbar

android.support.design.widget.TextInputLayout -> com.google.android.material.textfield.TextInputLayout

android.support.v7.widget.RecyclerView -> androidx.recyclerview.widget.RecyclerView

androidx.core.widget.DrawerLayout -> androidx.drawerlayout.widget.DrawerLayout

android.support.design.widget.NavigationView -> com.google.android.material.navigation.NavigationView

In Java:

Remove all the unused dependency

then press ALT+ENTER for the Error Part and choose the library of androidx. As, now many classes has been moved to androidx.