session-android/res/layout/activity_display_name.xml

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

    <View
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="@dimen/very_large_spacing"
        android:layout_marginRight="@dimen/very_large_spacing"
        android:textSize="@dimen/large_font_size"
        android:textStyle="bold"
        android:textColor="@color/text"
        android:text="Pick your display name" />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="@dimen/very_large_spacing"
        android:layout_marginTop="6dp"
        android:layout_marginRight="@dimen/very_large_spacing"
        android:textSize="@dimen/small_font_size"
        android:textColor="@color/text"
        android:text="This will be your name when you use Session." />

    <EditText
        style="@style/SmallSessionEditText"
        android:id="@+id/displayNameEditText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="@dimen/very_large_spacing"
        android:layout_marginTop="12dp"
        android:layout_marginRight="@dimen/very_large_spacing"
        android:hint="Enter a display name" />

    <View
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

    <Button
        style="@style/MediumProminentFilledButton"
        android:id="@+id/registerButton"
        android:layout_width="match_parent"
        android:layout_height="@dimen/medium_button_height"
        android:layout_marginLeft="@dimen/massive_spacing"
        android:layout_marginRight="@dimen/massive_spacing"
        android:layout_marginBottom="@dimen/small_spacing"
        android:text="Continue" />

</LinearLayout>