Here is my build gradle files
implementation 'com.google.firebase:firebase-analytics:17.2.0'
implementation 'com.google.firebase:firebase-database:19.1.0'
implementation 'com.github.jd-alexander:android-flat-button:v1.1'
implementation 'com.rengwuxian.materialedittext:library:2.1.4'
implementation 'com.squareup.picasso:picasso:2.71828'
implementation 'com.firebaseui:firebase-ui-database:3.3.0'
implementation 'androidx.cardview.widget.CardView'