service: Initial implementation of the NFD Android Service

Change-Id: Iee2c2f3588aa9af36bd170a22ce8333e4945ff67
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..289db7d
--- /dev/null
+++ b/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<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=".MainActivity">
+
+    <Button
+        android:id="@+id/start_nfd_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:onClick="startNFD"
+        android:text="Start NFD" />
+
+    <Button
+        android:id="@+id/stop_nfd_button"
+        android:layout_below="@id/start_nfd_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:onClick="stopNFD"
+        android:text="Stop NFD" />
+
+    <Button
+        android:id="@+id/start_nfd_explicit_button"
+        android:layout_below="@id/stop_nfd_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:onClick="startNFDexplicit"
+        android:text="Start NFD explicit!" />
+
+    <Button
+        android:id="@+id/start_nfd_jni"
+        android:layout_below="@id/start_nfd_explicit_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:onClick="startNfd"
+        android:text="Start NFD through JNI" />
+
+    <Button
+        android:id="@+id/stop_nfd_jni"
+        android:layout_below="@id/start_nfd_jni"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:onClick="stopNfd"
+        android:text="Stop NFD through JNI" />
+</RelativeLayout>