<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context="net.ericschrag.ud_demo.GithubUserDetailActivity">

    <ImageView
        android:id="@+id/user_avatar"
        android:layout_width="120dp"
        android:layout_height="120dp"
        android:src="#777"/>

    <TextView
        android:id="@+id/user_name"
        android:text="Username goes here"
        android:layout_below="@+id/user_avatar"
        android:textColor="@android:color/black"
        android:textSize="20sp"
        android:textStyle="bold"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</RelativeLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context="net.ericschrag.ud_demo.GithubUserDetailActivity">

    <ImageView
        android:id="@+id/user_avatar"
        android:layout_width="120dp"
        android:layout_height="120dp"
        android:src="#777"/>

    <TextView
        android:id="@+id/user_name"
        android:layout_below="@+id/user_avatar"
        android:textColor="@android:color/black"
        tools:text="Sample Username"
        android:textSize="20sp"
        android:textStyle="bold"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</RelativeLayout>

Use design-time tools to see sample text without leaving hardcoded text
Use design-time tools to see sample text without leaving hardcoded text
