activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/article_heading"
        android:background="@color/colorPrimary"
        android:textColor="@android:color/white"
        android:padding="@dimen/padding_regular"
        android:textAppearance="@android:style/TextAppearance.Large"
        android:textStyle="bold"
        android:text="@string/article_title"/>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/article_subheading"
        android:layout_below="@id/article_heading"
        android:padding="@dimen/padding_regular"
        android:textAppearance="@android:style/TextAppearance"
        android:text="@string/article_subtitle"/>

    <ScrollView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/article_subheading">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/article"
            android:lineSpacingExtra="@dimen/line_spacing"
            android:autoLink="web"
            android:text="@string/article_text"/>
    </ScrollView>

</RelativeLayout>