We will show a list of the user's details and the names of all the repos. Here, we will use ListView.

Here is the code of the acitivity_main.xml file:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ListView
        android:id="@+id/displayList"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

We will use this listview in the onResponse() function of MainActivity. 

We will get the list and create a custom adapter to show the user list, as shown in the following code:

val listItems = arrayOfNulls<String>( response.body()!!.size)
for (i in 0 until response.body()!!.size) {
    val recipe = response.body()!![i]
    listItems[i] = recipe.name
}
val adapter = ArrayAdapter<String>(this@MainActivity, android.R.layout.simple_list_item_1, listItems)
displayList.adapter = adapter

Here, we get the list of repos and convert them into an array. Then, we create the native adapter for the list with val adapter = ArrayAdapter<String>(this@MainActivity, android.R.layout.simple_list_item_1, listItems) and set the adapter in our list with displayList.adapter = adapter.