Added generic code in MainActivity for robot

code/src/app/src/main/java/com/fitbot/MainActivity.java

@@ -4,15 +4,34 @@ import android.app.Activity;
 import android.media.MediaRecorder;
 import android.os.Bundle;
 
-public class MainActivity extends Activity {
+public class MainActivity extends RobotActivity implements RobotLifecycleCallbacks {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-
-        /* Since this is our main activity, we can start our audio recording service here */
-
-
-
+        // Register the RobotLifecycleCallbacks to this Activity.
+        QiSDK.register(this, this);
     }
-}
+
+    @Override
+    protected void onDestroy() {
+        // Unregister the RobotLifecycleCallbacks for this Activity.
+        QiSDK.unregister(this, this);
+        super.onDestroy();
+    }
+
+    @Override
+    public void onRobotFocusGained(QiContext qiContext) {
+        // The robot focus is gained.
+    }
+
+    @Override
+    public void onRobotFocusLost() {
+        // The robot focus is lost.
+    }
+
+    @Override
+    public void onRobotFocusRefused(String reason) {
+        // The robot focus is refused.
+    }
+}

code/src/app/src/main/java/com/fitbot/speech/SpeechGenerator.java

@@ -29,11 +29,11 @@ public class SpeechGenerator  {
     }
 
     /**
-     * Default constructor, sets the language to English
+     * Default constructor, sets the language to Dutch
      */
     public SpeechGenerator()
     {
-        this("en");
+        this("nl");
     }