In the created main_activity layout, we'll show a list of the user details where we show the name, email ID, and contact number of a user—we'll use ListView.
Here's the code of the mainActivity layout of the MainActivity class:
<?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">
<TextView
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/user_title"
app:layout_constraintEnd_toEndOf="parent"
android:textStyle="bold"
android:padding="5dp"
android:gravity="center_horizontal"
android:textAppearance="?android:textAppearanceLarge"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ListView
android:id="@+id/displayList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView" />
</android.support.constraint.ConstraintLayout>
In this layout, we have one TextView and one ListView.
We'll use this ListView in the onResponse() function of MainActivity.
We'll get the list and create a custom adapter to show the user list, as follows:
val adapter = UserListAdapter(this@MainActivity,
response.body()//this is a arraylist
)
Here, we have a custom adapter where we'll send the context and the Array list of the users.