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

<?xml version="1.0" encoding="utf-8"?>

<layout xmlns:android="http://schemas.android.com/apk/res/android">

    <android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scrollbarSize="3dp"
        android:scrollbarThumbVertical="@color/md_grey_500"

        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:capitalize="none"
                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="347dp"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                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" />


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