Creating the NetworkService and the REST class

BIDL/BIDL/.idea/misc.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="EntryPointsManager">
+    <entry_points version="2.0" />
+  </component>
   <component name="NullableNotNullManager">
     <option name="myDefaultNullable" value="android.support.annotation.Nullable" />
     <option name="myDefaultNotNull" value="android.support.annotation.NonNull" />

BIDL/BIDL/app/src/main/java/services/servercommunication/NetworkService.java

+package services.servercommunication;
+
+import com.squareup.okhttp.OkHttpClient;
+
+/**
+ * Helfer Klasse, die häufig verwendete I/O Operationen im Netzwerk und der Datenbank erleichtert
+ * Created by Christof on 04.08.2016.
+ */
+
+public abstract class NetworkService {
+
+    /**
+     *  TAG Konstante fürs Logging
+     */
+    private static final String TAG = NetworkService.class.getSimpleName();
+
+    private static OkHttpClient okHttpClient = new OkHttpClient();
+
+    /**
+     * Meldet einen Nutzer an
+     *
+     * @param email E-Mail des Nutzers
+     * @param password Passwort des Nutzers
+     * @param handler Callback handler
+     */
+}

BIDL/BIDL/app/src/main/java/services/servercommunication/REST.java

+package services.servercommunication;
+
+/**
+ * REST API URLs
+ * Created by Christof on 04.08.2016.
+ */
+
+public abstract class REST {
+    /**
+     * The following URLs refer to the Spring REST API
+     * <p/>
+     * First section defines development URL and paths
+     * Second section defines production URL and paths
+     */
+
+    public static final String LOCAL_PORT = "8080";
+    public static final String LOCAL_CONTAINER = "/Rest";
+    public static final String LOCAL_URL = "http://192.168.1.2:" + LOCAL_PORT + LOCAL_CONTAINER;
+
+    // TODO: 04.08.2016 production URL and paths
+
+    // TODO: 04.08.2016 Get FullUrl depending on selected Build Variant
+
+    public static String FULL_URL = LOCAL_URL;
+
+    // Login path
+    private static final String LOGIN = "/login";
+    public static String SPRING_LOGIN = FULL_URL + LOGIN;
+
+}

BIDL/BIDL/app/src/main/res/layout/activity_main.xml

@@ -5,7 +5,7 @@
     android:id="@+id/activity_main"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="de.uni_oldenburg.bidl.base_view.MainActivity">
+    tools:context="de.uni_oldenburg.bidl.bidl.app.base_view.MainActivity">
 
     <TextView
         android:id="@+id/BeaconID"

BIDL/BIDL/app/src/main/res/layout/activity_splash.xml

@@ -5,7 +5,7 @@
     android:id="@+id/activity_splash"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="de.uni_oldenburg.bidl.base_view.SplashActivity"
+    tools:context="de.uni_oldenburg.bidl.bidl.app.base_view.SplashActivity"
     android:orientation="vertical"
     android:background="@color/white">