habitica-android/Habitica/res/layout/fragment_about.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scrollbarSize="3dp"
    android:scrollbarThumbVertical="@color/scrollbarThumb"
    android:scrollbars="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <ImageView
            android:layout_width="72dp"
            android:layout_height="72dp"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="20dp"
            android:src="@mipmap/ic_launcher" />

        <TextView
            android:id="@+id/twitter"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="10sp"
            android:autoLink="web"
            android:text="\@habitica"
            android:textSize="@dimen/abc_text_size_title_material" />

        <TextView
            android:id="@+id/webSite"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="10sp"
            android:autoLink="web"
            android:text="www.habitica.com"
            android:textSize="@dimen/abc_text_size_medium_material" />

        <TextView
            android:id="@+id/wiki"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="10sp"
            android:autoLink="web"
            android:text="http://habitica.wikia.com/"
            android:textSize="@dimen/abc_text_size_medium_material" />

        <Button
            android:id="@+id/googlePlayStoreButton"
            android:layout_width="250dp"
            android:layout_height="35dp"
            android:layout_gravity="center_horizontal"

            android:layout_marginTop="35sp"
            android:background="@drawable/rounded_purple_square"
            android:text="@string/about.rate_our_app"
            android:textAllCaps="false"
            android:textColor="@color/white"
            android:textSize="@dimen/abc_text_size_medium_material" />

        <Button
            android:id="@+id/reportBug"
            android:layout_width="250dp"
            android:layout_height="35dp"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="20sp"

            android:background="@drawable/rounded_purple_square"
            android:text="@string/about.bugreport"
            android:textAllCaps="false"
            android:textColor="@color/white"
            android:textSize="@dimen/abc_text_size_medium_material" />

        <Button
            android:id="@+id/sendFeedback"
            android:layout_width="250dp"
            android:layout_height="35dp"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="20sp"
            android:background="@drawable/rounded_purple_square"
            android:text="@string/about.give_us_feedback"
            android:textAllCaps="false"
            android:textColor="@color/white"
            android:textSize="@dimen/abc_text_size_medium_material" />

        <TextView
            android:id="@+id/sourceCodeLink"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:layout_marginTop="20sp"
            android:text="@string/about.habitica_open_source"
            android:textSize="@dimen/abc_text_size_small_material" />

        <Button
            android:id="@+id/sourceCodeButton"
            android:layout_width="250dp"
            android:layout_height="35dp"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="10sp"
            android:background="@drawable/rounded_purple_square"

            android:text="@string/about.source_code"
            android:textAllCaps="false"
            android:textColor="@color/white"
            android:textSize="@dimen/abc_text_size_medium_material" />

        <TextView
            android:id="@+id/versionInfo"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:layout_marginTop="30sp"
            android:textSize="@dimen/abc_text_size_small_material" />

    </LinearLayout>
</android.support.v4.widget.NestedScrollView>