diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..34909cf4b033b058e78d7f7ef08f9616c06986a3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+WarpDrinkApi/.settings/
+WarpDrinkApi/.classpath
+WarpDrinkApi/.project
+WarpDrinkApi/target/
diff --git a/WarpDrinkApi/pom.xml b/WarpDrinkApi/pom.xml
new file mode 100644
index 0000000000000000000000000000000000000000..1fbc9400b3a11fecfbd8f849b421625828b674c8
--- /dev/null
+++ b/WarpDrinkApi/pom.xml
@@ -0,0 +1,47 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>ms.itsecteam</groupId>
+  <artifactId>warpdrink</artifactId>
+  <packaging>war</packaging>
+  <version>0.0.1-SNAPSHOT</version>
+  <name>warpdrink Maven Webapp</name>
+  <url>http://maven.apache.org</url>
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>3.8.1</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+		<groupId>javax.ws.rs</groupId>
+		<artifactId>jsr311-api</artifactId>
+		<version>1.1.1</version>
+	</dependency>
+    <dependency>
+	  	<groupId>javax.servlet</groupId>
+	 	 <artifactId>javax.servlet-api</artifactId>
+	  	<version>3.1.0</version>
+	  	<scope>provided</scope>
+	</dependency>
+	<dependency>
+		<groupId>com.sun.jersey</groupId>
+		<artifactId>jersey-bundle</artifactId>
+		<version>1.19</version>
+	</dependency>
+	<dependency>
+		<groupId>org.ow2.asm</groupId>
+		<artifactId>asm</artifactId>
+		<version>5.0.4</version>
+	</dependency>
+	<dependency>
+		<groupId>org.apache.cxf</groupId>
+	  	<artifactId>cxf-rt-rs-security-oauth2</artifactId>
+	  	<version>2.7.5</version>
+	</dependency>
+  </dependencies>
+  <build>
+    <finalName>warpdrink</finalName>
+  </build>
+</project>
diff --git a/WarpDrinkApi/src/main/java/ms/itsecteam/warpdrink/objects/User.java b/WarpDrinkApi/src/main/java/ms/itsecteam/warpdrink/objects/User.java
new file mode 100644
index 0000000000000000000000000000000000000000..1efbff197808292460842f88d542e8cab60e29bc
--- /dev/null
+++ b/WarpDrinkApi/src/main/java/ms/itsecteam/warpdrink/objects/User.java
@@ -0,0 +1,51 @@
+package ms.itsecteam.warpdrink.objects;
+
+import javax.xml.bind.annotation.XmlRootElement;
+
+@SuppressWarnings("restriction")
+@XmlRootElement
+public class User {
+
+    private int userid;
+    private String name;
+    private double credit;
+
+    public User() {
+        super();
+    }
+
+    public User(int userid, String name, double credit) {
+        super();
+        this.userid = userid;
+        this.name = name;
+        this.credit = credit;
+    }
+
+    public int getUserid() {
+		return userid;
+	}
+
+	public void setUserid(int userid) {
+		this.userid = userid;
+	}
+
+	public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public double getCredit() {
+        return credit;
+    }
+
+    public void setCredit(double credit) {
+        this.credit = credit;
+    }
+
+    public String toString() {
+        return "[Name: "+this.name+", Credit:"+this.credit+"]";
+    }
+}
diff --git a/WarpDrinkApi/src/main/java/ms/itsecteam/warpdrink/provider/UserProvider.java b/WarpDrinkApi/src/main/java/ms/itsecteam/warpdrink/provider/UserProvider.java
new file mode 100644
index 0000000000000000000000000000000000000000..841f45fbf7ffd3ea350047f29c9496b6d27fb80d
--- /dev/null
+++ b/WarpDrinkApi/src/main/java/ms/itsecteam/warpdrink/provider/UserProvider.java
@@ -0,0 +1,29 @@
+package ms.itsecteam.warpdrink.provider;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.ws.rs.*;
+import javax.ws.rs.core.MediaType;
+
+import ms.itsecteam.warpdrink.objects.User;
+
+@Path("user")
+public class UserProvider {
+  @GET
+  @Path("/all")
+  @Produces(MediaType.APPLICATION_JSON)
+  public List<User> getUsers() {
+	  List<User> users = new ArrayList<User>();
+	  users.add(new User(1,"Hugo",1.0));
+	  users.add(new User(2,"Frank",0.5));
+	  users.add(new User(3,"Martin",0.5));
+	  return users;
+  }
+  @GET
+  @Path("/{userid}")
+  @Produces(MediaType.APPLICATION_JSON)
+  public User getUser(@PathParam("userid") int userid) {
+	  return new User(userid,"Hugo",1.0);
+  }
+}
\ No newline at end of file
diff --git a/WarpDrinkApi/src/main/webapp/WEB-INF/web.out.xml b/WarpDrinkApi/src/main/webapp/WEB-INF/web.out.xml
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/WarpDrinkApi/src/main/webapp/WEB-INF/web.xml b/WarpDrinkApi/src/main/webapp/WEB-INF/web.xml
new file mode 100644
index 0000000000000000000000000000000000000000..bf12269c8afbb340c1c8a43270b8252f2c0fec97
--- /dev/null
+++ b/WarpDrinkApi/src/main/webapp/WEB-INF/web.xml
@@ -0,0 +1,18 @@
+<!DOCTYPE web-app PUBLIC
+ "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
+ "http://java.sun.com/dtd/web-app_2_3.dtd" >
+
+<web-app>
+<servlet>
+    <servlet-name>REST Service</servlet-name>
+    <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
+    <init-param>
+        <param-name>com.sun.jersey.config.property.packages</param-name>
+        <param-value>ms.itsecteam.warpdrink.provider</param-value>
+    </init-param>
+</servlet>
+<servlet-mapping>
+    <servlet-name>REST Service</servlet-name>
+    <url-pattern>/rest/*</url-pattern>
+</servlet-mapping>
+</web-app>
diff --git a/WarpDrinkApi/src/main/webapp/index.jsp b/WarpDrinkApi/src/main/webapp/index.jsp
new file mode 100644
index 0000000000000000000000000000000000000000..ced9a5aea6d90c2afe66caab06fd482c0c63219e
--- /dev/null
+++ b/WarpDrinkApi/src/main/webapp/index.jsp
@@ -0,0 +1,5 @@
+<html>
+	<body>
+		<h2>Hello World!</h2>
+	</body>
+</html>
diff --git a/WarpDrinkApp/app/app.iml b/WarpDrinkApp/app/app.iml
index 6ab4ba75ba838d60df6fdb87e6c053f84457e6b5..fbe226fa96e6d5a622940a930abd45b518e8fb56 100644
--- a/WarpDrinkApp/app/app.iml
+++ b/WarpDrinkApp/app/app.iml
@@ -88,9 +88,17 @@
     </content>
     <orderEntry type="jdk" jdkName="Android API 22 Platform" jdkType="Android SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" exported="" name="codepath-oauth-0.4.1" level="project" />
+    <orderEntry type="library" exported="" name="scribe-codepath-0.0.3" level="project" />
     <orderEntry type="library" exported="" name="activeandroid-3.0" level="project" />
+    <orderEntry type="library" exported="" name="codepath-utils" level="project" />
+    <orderEntry type="library" exported="" name="jackson-databind-2.0.1" level="project" />
+    <orderEntry type="library" exported="" name="jackson-core-2.0.1" level="project" />
+    <orderEntry type="library" exported="" name="jackson-annotations-2.0.1" level="project" />
     <orderEntry type="library" exported="" name="support-annotations-22.2.0" level="project" />
     <orderEntry type="library" exported="" name="support-v4-22.2.0" level="project" />
+    <orderEntry type="library" exported="" name="spring-android-rest-template-1.0.1.RELEASE" level="project" />
+    <orderEntry type="library" exported="" name="spring-android-core-1.0.1.RELEASE" level="project" />
     <orderEntry type="library" exported="" name="appcompat-v7-22.2.0" level="project" />
   </component>
 </module>
\ No newline at end of file
diff --git a/WarpDrinkApp/app/build.gradle b/WarpDrinkApp/app/build.gradle
index d18e504dc9025134a849f92ecafcc41fdc0a565b..01399bd06f3d4e647b78f41795910b12062029d2 100644
--- a/WarpDrinkApp/app/build.gradle
+++ b/WarpDrinkApp/app/build.gradle
@@ -17,9 +17,19 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
+    packagingOptions {
+        exclude 'META-INF/LICENSE.txt'
+        exclude 'META-INF/NOTICE.txt'
+        exclude 'META-INF/notice.txt'
+        exclude 'META-INF/license.txt'
+    }
+
 }
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     compile 'com.android.support:appcompat-v7:22.2.0'
+    compile 'com.fasterxml.jackson.core:jackson-databind:2.0.1'
+    compile 'org.springframework.android:spring-android-rest-template:1.0.1.RELEASE'
 }
diff --git a/WarpDrinkApp/app/libs/codepath-oauth-0.4.1.jar b/WarpDrinkApp/app/libs/codepath-oauth-0.4.1.jar
new file mode 100644
index 0000000000000000000000000000000000000000..9b92c0a1451d8b4c3d4d7395f9020a1187218fa5
Binary files /dev/null and b/WarpDrinkApp/app/libs/codepath-oauth-0.4.1.jar differ
diff --git a/WarpDrinkApp/app/libs/codepath-utils.jar b/WarpDrinkApp/app/libs/codepath-utils.jar
new file mode 100644
index 0000000000000000000000000000000000000000..7294db1dfb79f406c8ccc7c240317ffba0bcc13b
Binary files /dev/null and b/WarpDrinkApp/app/libs/codepath-utils.jar differ
diff --git a/WarpDrinkApp/app/libs/scribe-codepath-0.0.3.jar b/WarpDrinkApp/app/libs/scribe-codepath-0.0.3.jar
new file mode 100644
index 0000000000000000000000000000000000000000..ab752a4f9eed714b9db1fe87f43e7283e9c711f1
Binary files /dev/null and b/WarpDrinkApp/app/libs/scribe-codepath-0.0.3.jar differ
diff --git a/WarpDrinkApp/app/src/main/AndroidManifest.xml b/WarpDrinkApp/app/src/main/AndroidManifest.xml
index 58957097ff908946fdd9312f3ad252ca671f6ab0..93792b685de7c421a58f6e8d6fe95a979522be2f 100644
--- a/WarpDrinkApp/app/src/main/AndroidManifest.xml
+++ b/WarpDrinkApp/app/src/main/AndroidManifest.xml
@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="ms.itsecteam.warpdrink" >
-
+    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:name="ms.itsecteam.warpdrink.WarpDrinkApplication"
         android:theme="@style/AppTheme" >
-        <uses-permission android:name="android.permission.INTERNET"></uses-permission>
+
 
         <meta-data android:name="AA_DB_NAME" android:value="warpdrink_data.db" />
         <meta-data android:name="AA_DB_VERSION" android:value="5" />
diff --git a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/MainActivity.java b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/MainActivity.java
index 670d68667433b8a66145e32f8447d2ee81ec6442..118683b97148ce34a08bdc48900bf58d5ae61d2f 100644
--- a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/MainActivity.java
+++ b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/MainActivity.java
@@ -19,14 +19,17 @@ import android.widget.TextView;
 import android.widget.Toast;
 
 import java.util.ArrayList;
+import java.util.List;
+import java.util.ListIterator;
 
-import ms.itsecteam.warpdrink.data.User;
+import ms.itsecteam.warpdrink.data.DataApi;
+import ms.itsecteam.warpdrink.data.RestClient;
+import ms.itsecteam.warpdrink.data.objects.User;
 import ms.itsecteam.warpdrink.dialogs.ChargeDialog;
 import ms.itsecteam.warpdrink.dialogs.NewUserDialog;
 import ms.itsecteam.warpdrink.orderList.ListViewAdapter;
 import ms.itsecteam.warpdrink.orderList.Order;
 
-
 public class MainActivity extends ActionBarActivity implements View.OnClickListener, View.OnKeyListener, AdapterView.OnItemClickListener, DialogInterface.OnClickListener {
     private Button btnPay, btnCharge, btnLogout;
     private ImageButton btnRefresh;
@@ -38,7 +41,7 @@ public class MainActivity extends ActionBarActivity implements View.OnClickListe
     private ArrayAdapter atxvAdapter;
     private ArrayList<Double> order;
     private User currentUser;
-
+    private List<User> users;
     public boolean onCreateOptionsMenu(Menu menu) {
         MenuInflater inflater = getMenuInflater();
         inflater.inflate(R.menu.menu_main, menu);
@@ -56,9 +59,8 @@ public class MainActivity extends ActionBarActivity implements View.OnClickListe
         new User(5, "detlef", 0.5).save();
 
         getWindow().addFlags(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
-     //   getSupportActionBar().hide();
         setContentView(R.layout.activity_main);
-
+        DataApi.getInstance().setMainActivity(this);
 
         this.txtSum = (TextView) findViewById(R.id.txtSum);
         this.txtCredit = (TextView)findViewById(R.id.txtCredit);
@@ -74,7 +76,9 @@ public class MainActivity extends ActionBarActivity implements View.OnClickListe
         this.lstOrdered = (ListView) findViewById(R.id.lstOrdered);
         this.lstOrdered.setAdapter(this.lstAdapter);
 
-        this.atxvAdapter = new ArrayAdapter(this, android.R.layout.select_dialog_item, User.getAll());
+        this.users = User.getAll();
+        this.atxvAdapter = new ArrayAdapter(this, android.R.layout.select_dialog_item, users);
+
         this.atxvName = (AutoCompleteTextView) findViewById(R.id.atxvName);
         this.atxvName.setAdapter(atxvAdapter);
         this.atxvName.setThreshold(1);
@@ -84,6 +88,8 @@ public class MainActivity extends ActionBarActivity implements View.OnClickListe
         this.btnLogout.setVisibility(View.INVISIBLE);
         this.enableControls(false);
 
+        RestClient restClient = RestClient.getInstance();
+        restClient.getUser();
     }
 
     private void setCurrentUser(User user) {
@@ -95,6 +101,22 @@ public class MainActivity extends ActionBarActivity implements View.OnClickListe
             this.currentUser = user;
         }
     }
+
+    public void refreshUsers() {
+        this.atxvAdapter.clear();
+        List <User> userList = User.getAll();
+        ListIterator<User> userListIterator = userList.listIterator();
+        while(userListIterator.hasNext()) {
+            this.atxvAdapter.add(userListIterator.next());
+        }
+        this.users = users;
+    }
+
+    public List<User> getUsers() {
+
+        return users;
+    }
+
     public User getCurrentUser() {
         return this.currentUser;
     }
diff --git a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/DataApi.java b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/DataApi.java
index 093f144d6bb3e9145cf877bc1b71fcd2104eb508..22a909e9475c1f16540402df6b3fd91aaf9396e0 100644
--- a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/DataApi.java
+++ b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/DataApi.java
@@ -1,11 +1,33 @@
 package ms.itsecteam.warpdrink.data;
 
-/**
- * Created by Chris on 27.06.2015.
- */
+import android.util.Log;
+import java.util.Arrays;
+
+import ms.itsecteam.warpdrink.MainActivity;
+import ms.itsecteam.warpdrink.data.objects.User;
+
 public class DataApi {
 
-    public static boolean addUser(String name) {
+    private static DataApi instance;
+    private MainActivity mainActivity;
+    private DataApi () {}
+
+    public static DataApi getInstance () {
+        if (DataApi.instance == null) {
+            DataApi.instance = new DataApi();
+        }
+        return DataApi.instance;
+    }
+
+    public MainActivity getMainActivity() {
+        return mainActivity;
+    }
+
+    public void setMainActivity(MainActivity mainActivity) {
+        this.mainActivity = mainActivity;
+    }
+
+    public boolean addUser(String name) {
         if(User.getByName(name) == null) {
             User u = new User();
             u.setName(name);
@@ -17,15 +39,16 @@ public class DataApi {
         return false;
     }
 
-    public static void localRefreshUserData() {
-
+    public void localRefreshUserData() {
+        Log.d("App", Arrays.toString(User.getAll().toArray()));
+        mainActivity.refreshUsers();
     }
 
-    private static boolean remoteSaveNewUser(User u) {
+    private boolean remoteSaveNewUser(User u) {
         return true;
     }
 
-    public static User remoteGetUser(int userid) {
+    public User remoteGetUser(int userid) {
         return new User();
     }
 }
diff --git a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/RestClient.java b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/RestClient.java
new file mode 100644
index 0000000000000000000000000000000000000000..bce08f6ee3fca4cd552ccac183311ede64a2aaed
--- /dev/null
+++ b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/RestClient.java
@@ -0,0 +1,70 @@
+package ms.itsecteam.warpdrink.data;
+
+import android.os.AsyncTask;
+import android.util.Log;
+
+import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
+import org.springframework.web.client.RestTemplate;
+
+import ms.itsecteam.warpdrink.MainActivity;
+import ms.itsecteam.warpdrink.data.objects.User;
+
+public class RestClient {
+
+    private static RestClient instance;
+    private MainActivity mainActivity;
+    private RestClient() {}
+
+    public static RestClient getInstance () {
+        if (RestClient.instance == null) {
+            RestClient.instance = new RestClient();
+        }
+        return RestClient.instance;
+    }
+
+    public MainActivity getMainActivity() {
+        return mainActivity;
+    }
+
+    public void setMainActivity(MainActivity mainActivity) {
+        this.mainActivity = mainActivity;
+    }
+
+    public void getUser() {
+        new HttpRequestTask<User>().initTask("user/4",User.class).execute();
+    }
+
+    private class HttpRequestTask<T> extends AsyncTask<Object, Void, T> {
+        String url;
+        Class<T> clazz;
+        public HttpRequestTask initTask(String url, Class<T> clazz) {
+            this.url = "http://10.0.2.2:8080/warpdrink/rest/";
+
+            this.url += url;
+            this.clazz=clazz;
+            return this;
+        }
+        @Override
+        protected T doInBackground(Object... params) {
+            try {
+                RestTemplate restTemplate = new RestTemplate();
+                restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
+                T ret = restTemplate.getForObject(this.url, clazz);
+
+                return ret;
+            } catch (Exception e) {
+                Log.e("MainActivity", e.getMessage(), e);
+            }
+
+            return null;
+        }
+
+        @Override
+        protected void onPostExecute(T result) {
+            Log.e("MainActivity", ((User) result).getName());
+        }
+
+    }
+
+}
+
diff --git a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/objects/Setting.java b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/objects/Setting.java
new file mode 100644
index 0000000000000000000000000000000000000000..2ae4ad1b5305bd023b514d365c87d02865817d44
--- /dev/null
+++ b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/objects/Setting.java
@@ -0,0 +1,74 @@
+package ms.itsecteam.warpdrink.data.objects;
+
+import com.activeandroid.Model;
+import com.activeandroid.annotation.Column;
+import com.activeandroid.annotation.Table;
+import com.activeandroid.query.Delete;
+import com.activeandroid.query.Select;
+
+import java.util.List;
+
+@Table(name = "Users")
+public class Setting extends Model {
+
+    @Column(name = "key")
+    private String key;
+    @Column(name = "value")
+    private String value;
+
+    public Setting() {
+        super();
+    }
+
+    public Setting(String key, String value) {
+        super();
+        this.key = key;
+        this.value = value;
+    }
+
+    public String getKey() {
+        return key;
+    }
+
+    public String getValue() {
+        return value;
+    }
+
+    public static String getSetting(String key) {
+        Setting setting = new Select()
+                .from(Setting.class)
+                .where("key = ?", key)
+                .executeSingle();
+        if(setting != null)
+            return setting.getValue();
+        return "";
+    }
+
+    public void setKey(String key) {
+        this.key = key;
+    }
+
+    public void setValue(String value) {
+        this.value = value;
+    }
+
+    public static void setSetting(String key, String value) {
+        Setting setting = new Select()
+                .from(Setting.class)
+                .where("key = ?", key)
+                .executeSingle();
+
+        if(setting != null) {
+            setting.setValue(value);
+        } else {
+            setting = new Setting(key, value);
+        }
+    }
+
+    public static void deleteAll() {
+        new Delete().from(Setting.class).execute();
+    }
+    public String toString() {
+        return this.key+":"+this.value;
+    }
+}
diff --git a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/User.java b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/objects/User.java
similarity index 88%
rename from WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/User.java
rename to WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/objects/User.java
index 151c5bbcedd89c965ce7defc41a3496b77d85308..ed159e1b4795de60b2118d80198d55814e627801 100644
--- a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/User.java
+++ b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/data/objects/User.java
@@ -1,6 +1,4 @@
-package ms.itsecteam.warpdrink.data;
-
-import android.util.Log;
+package ms.itsecteam.warpdrink.data.objects;
 
 import com.activeandroid.Model;
 import com.activeandroid.annotation.Column;
@@ -31,6 +29,14 @@ public class User extends Model {
         this.credit = credit;
     }
 
+    public int getUserid() {
+        return userid;
+    }
+
+    public void setUserid(int userid) {
+        this.userid = userid;
+    }
+
     public String getName() {
         return name;
     }
diff --git a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/ChargeCustomDialog.java b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/ChargeCustomDialog.java
index 431c3a793aa7291c37e643a9840aca4d9f2c3604..b4fcc7f807ffe27bb97d38a9143b55766593541d 100644
--- a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/ChargeCustomDialog.java
+++ b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/ChargeCustomDialog.java
@@ -9,7 +9,7 @@ import android.widget.NumberPicker;
 
 import ms.itsecteam.warpdrink.MainActivity;
 import ms.itsecteam.warpdrink.R;
-import ms.itsecteam.warpdrink.data.User;
+import ms.itsecteam.warpdrink.data.objects.User;
 
 public class ChargeCustomDialog extends Dialog implements
         View.OnClickListener {
diff --git a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/ChargeDialog.java b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/ChargeDialog.java
index 8ca13d8eba4b944d2125ac54a68a4ed9d82d28bd..589a6f5b772c2e6dd10fc2c1c35163a2f10877aa 100644
--- a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/ChargeDialog.java
+++ b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/ChargeDialog.java
@@ -1,6 +1,5 @@
 package ms.itsecteam.warpdrink.dialogs;
 
-import android.app.Activity;
 import android.app.Dialog;
 import android.os.Bundle;
 import android.view.View;
@@ -9,7 +8,7 @@ import android.widget.Button;
 
 import ms.itsecteam.warpdrink.MainActivity;
 import ms.itsecteam.warpdrink.R;
-import ms.itsecteam.warpdrink.data.User;
+import ms.itsecteam.warpdrink.data.objects.User;
 
 public class ChargeDialog extends Dialog implements
         android.view.View.OnClickListener {
diff --git a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/NewUserDialog.java b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/NewUserDialog.java
index 1241c57ca26bdc8966b645b32ae0dfeaf384fc0d..aaaf347e95ca10b859112ed79c9b998cdb6db950 100644
--- a/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/NewUserDialog.java
+++ b/WarpDrinkApp/app/src/main/java/ms/itsecteam/warpdrink/dialogs/NewUserDialog.java
@@ -11,7 +11,6 @@ import android.widget.Toast;
 import ms.itsecteam.warpdrink.MainActivity;
 import ms.itsecteam.warpdrink.R;
 import ms.itsecteam.warpdrink.data.DataApi;
-import ms.itsecteam.warpdrink.data.User;
 
 public class NewUserDialog extends Dialog implements
         View.OnClickListener {
@@ -43,7 +42,7 @@ public class NewUserDialog extends Dialog implements
             case R.id.btnAddUser:
                 String username = this.txtUsername.getText().toString();
                 if (!username.equals("")) {
-                    if(!DataApi.addUser(username)) {
+                    if(!DataApi.getInstance().addUser(username)) {
                         Toast.makeText(v.getContext(),"Username ist schon vorhanden",Toast.LENGTH_LONG).show();
                     } else {
                         Toast.makeText(v.getContext(),"User angelegt",Toast.LENGTH_LONG).show();