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

    <ImageView
        android:id="@+id/article_image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:adjustViewBounds="true"
        android:scaleType="fitCenter"
        android:visibility="visible" />

    <TextView
        android:id="@+id/article_author"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="AUTHOR"
        android:textAppearance="@style/TextAppearance.AppCompat.Subhead"
        android:textColor="@color/subhead" />

    <TextView
        android:id="@+id/article_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Title"
        android:textAppearance="@style/TextAppearance.AppCompat.Headline"
        android:textColor="@color/headline"
        android:textStyle="bold" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/adapter_article_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="@dimen/activity_margin_horizontal">

    <ImageView
        android:id="@+id/article_image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:adjustViewBounds="true"
        android:scaleType="fitCenter"
        android:visibility="visible" />

    <TextView
        android:id="@+id/article_author"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="AUTHOR"
        android:textAppearance="@style/TextAppearance.AppCompat.Subhead"
        android:textColor="@color/subhead" />

    <TextView
        android:id="@+id/article_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Title"
        android:textAppearance="@style/TextAppearance.AppCompat.Headline"
        android:textColor="@color/headline"
        android:textStyle="bold" />

</LinearLayout>

Set layout height for article in list to wrap_content
Set layout height for article in list to wrap_content
