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fragment_status.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/fragment_status"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.google.samples.smartlock.sms_verify.ui.StatusFragment">

<TextView
        android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        style="@style/Base.TextAppearance.AppCompat.Body1"
        android:text="@string/welcome_text" />

<TextView
        android:id="@+id/status"
        style="@style/Base.TextAppearance.AppCompat.Body2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/title"
        android:text="@string/status_text" />

<LinearLayout
        android:id="@+id/navigation"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentEnd="true">

<Button
            android:id="@+id/sign_up_btn"
            android:text="@string/sign_up_btn"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            style="@style/Widget.AppCompat.Button.Colored"
            android:layout_weight="1" />
    </LinearLayout>
</RelativeLayout>