loop/app/src/main/res/layout/about.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
  ~
  ~ This file is part of Loop Habit Tracker.
  ~
  ~ Loop Habit Tracker is free software: you can redistribute it and/or modify
  ~ it under the terms of the GNU General Public License as published by the
  ~ Free Software Foundation, either version 3 of the License, or (at your
  ~ option) any later version.
  ~
  ~ Loop Habit Tracker is distributed in the hope that it will be useful, but
  ~ WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  ~ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  ~ more details.
  ~
  ~ You should have received a copy of the GNU General Public License along
  ~ with this program. If not, see <http://www.gnu.org/licenses/>.
  -->

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:background="?windowBackgroundColor"
            android:fillViewport="true">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        app:popupTheme="?toolbarPopupTheme"
        style="@style/Toolbar"/>

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

        <LinearLayout
            style="@style/CardList">

            <LinearLayout
                style="@style/Card"
                android:gravity="center">

                <ImageView
                    android:layout_width="100dp"
                    android:layout_height="100dp"
                    android:layout_margin="6dp"
                    android:src="@drawable/intro_icon_1"/>

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="center"
                    android:textStyle="bold"
                    android:textSize="16sp"
                    android:layout_margin="6dp"
                    android:textColor="?aboutScreenColor"
                    android:text="@string/app_name"/>

                <TextView
                    android:id="@+id/tvVersion"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="center"
                    android:text=""/>

            </LinearLayout>

            <LinearLayout
                style="@style/Card"
                android:gravity="center">

                <TextView
                    style="@style/CardHeader"
                    android:text="@string/links"
                    android:textColor="?aboutScreenColor"/>

                <TextView
                    android:id="@+id/tvRate"
                    style="@style/About.Item.Clickable"
                    android:text="@string/pref_rate_this_app"/>

                <TextView
                    android:id="@+id/tvFeedback"
                    style="@style/About.Item.Clickable"
                    android:text="@string/pref_send_feedback"/>

                <TextView
                    android:id="@+id/tvSource"
                    style="@style/About.Item.Clickable"
                    android:text="@string/pref_view_source_code"/>

            </LinearLayout>

            <LinearLayout
                style="@style/Card"
                android:gravity="center">

                <TextView
                    style="@style/CardHeader"
                    android:text="@string/developers"
                    android:textColor="?aboutScreenColor"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Álinson Xavier"/>
            </LinearLayout>

            <LinearLayout
                style="@style/Card"
                android:gravity="center">

                <TextView
                    style="@style/CardHeader"
                    android:text="@string/translators"
                    android:textColor="?aboutScreenColor"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Angga Rifandi (Bahasa Indonesia)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Tomáš Borovec (Čeština)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="David Nos (Català)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Matthias Meisser (Deutsch)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Sojusnik (Deutsch)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Can Altas (Deutsch)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Ander Raso Vazquez (Español)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="François Mahé (Français)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Thibaut Girka (Français)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Mathis Chenuet (Français)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Marco Cavazza (Italiano)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Adam Jurkiewicz (Polski)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Álinson Xavier (Português)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Dmitriy Bogdanov (Русский)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Dalecarlian (Svenska)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Robin (Svenska)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Đorđe Vasiljević (српски)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Caner Başaran (Türkçe)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Yurii Stavytskyi (Української)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Limin Lu (中文)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="XuToTo (中文)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Ting-Hua (中文)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Lee (中文)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Liveeasy (中文)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Naofumi F (日本語)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Al Alloush (العَرَبِية‎)"/>

                <TextView
                    style="@style/About.Item"
                    android:text="Josh Graham (한국어 )"/>
            </LinearLayout>
        </LinearLayout>
    </ScrollView>

    <View
        android:id="@+id/toolbarShadow"
        style="@style/ToolbarShadow"/>

</RelativeLayout>