app/src/main/res/values/styles_view.xml

<?xml version="1.0" encoding="utf-8"?><!--
  ~ This project is licensed under the open source MPL V2.
  ~ See https://github.com/openMF/android-client/blob/master/LICENSE.md
  -->

<resources>

    <style name="TextViewUnderline" parent="Widget.Design.TextInputLayout">
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">@dimen/view_line_height</item>
        <item name="android:layout_marginBottom">@dimen/layout_padding_16dp</item>
    </style>

    <style name="TextViewUnderline.Grey" parent="TextViewUnderline">
        <item name="android:background">@color/light_grey</item>
    </style>
</resources>