Simple use of databinding to display a String and Int

activity_main.xml

<layout 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">

    <data>

        <variable name="message" type="String" />
        <variable name="number" type="Integer" />

    </data>

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context="com.n8ebel.databindingsandbox.MainActivity"
        >

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="@{message}"
            />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text='@{"And here we are binding a simple value like the number " + number}'
            />

    </LinearLayout>
</layout>

MainActivity.kt

val binding = DataBindingUtil.setContentView<ActivityMainBinding>(this, R.layout.activity_main).apply {
  message = "hello"
  number = 5
}