--- /dev/null
+<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:gravity="center"
+ 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=".MainActivity" >
+
+ <ToggleButton
+ android:id="@+id/toggleButton1"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_gravity="center"
+ android:text="Board LED"
+ android:onClick="changeLEDState"/>
+
+</RelativeLayout>
\ No newline at end of file