react-native-picker-module/android/src/main/res/layout/spinner_view.xml

React Native Picker Module for Android & IOS

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:orientation="vertical">

    <TextView
            android:id="@+id/placeholder"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/border_bottom"
            android:padding="10dp"
            android:text="TextView"
            android:textAppearance="@style/TextAppearance.AppCompat" />

    <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
</LinearLayout>