app/src/main/res/layout/fragment_logcat_output.xml

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

    <ListView
        android:id="@+id/log_output"
        android:layout_weight="1"
        android:layout_width="match_parent"
        android:layout_height="0dp">
    </ListView>

</LinearLayout>