NxtAR-cam/res/layout/activity_main.xml

<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:baselineAligned="false"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/startButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:text="@string/start_button" />

    <!--  <EditText
        android:id="@+id/ipAddressField"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/startButton"
        android:layout_centerHorizontal="true"
        android:ems="10"
        android:inputType="text" /> 

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/ipAddressField"
        android:layout_alignBottom="@+id/ipAddressField"
        android:layout_toLeftOf="@+id/ipAddressField"
        android:text="@string/ipAddressLabel" />
    -->
    
</RelativeLayout>