diff --git a/APED/app/build.gradle b/APED/app/build.gradle
index 440cf69..b1bc785 100644
--- a/APED/app/build.gradle
+++ b/APED/app/build.gradle
@@ -37,6 +37,7 @@ dependencies {
     implementation 'androidx.navigation:navigation-ui:2.2.2'
     implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.2.0'
     implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0'
+    implementation 'com.android.volley:volley:1.1.1'
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
diff --git a/APED/app/src/main/AndroidManifest.xml b/APED/app/src/main/AndroidManifest.xml
index 71a046f..15e51c1 100644
--- a/APED/app/src/main/AndroidManifest.xml
+++ b/APED/app/src/main/AndroidManifest.xml
@@ -4,6 +4,8 @@
 
     <!-- permission to read and write the XML file -->
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <!-- permission to access send http requests -->
+    <uses-permission android:name="android.permission.INTERNET" />
 
     <application
         android:allowBackup="true"
@@ -11,7 +13,8 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.APED">
+        android:theme="@style/Theme.APED"
+        android:usesCleartextTraffic="true">
         <activity
             android:name=".MainActivity"
             android:label="@string/app_name"
diff --git a/APED/app/src/main/java/com/example/aped/MainActivity.java b/APED/app/src/main/java/com/example/aped/MainActivity.java
index 6432687..6be2f89 100644
--- a/APED/app/src/main/java/com/example/aped/MainActivity.java
+++ b/APED/app/src/main/java/com/example/aped/MainActivity.java
@@ -2,18 +2,15 @@ package com.example.aped;
 
 import android.Manifest;
 import android.app.AlertDialog;
-import android.content.res.AssetManager;
 import android.os.Bundle;
-import android.os.Environment;
 import android.util.Log;
 import android.view.MenuItem;
 
 import android.view.Menu;
 import android.widget.Toast;
 
-import com.example.aped.communication.IIO;
+import com.example.aped.communication.Communicator;
 import com.example.aped.utils.ExternalStorageHandler;
-import com.example.aped.communication.TestIO;
 import com.example.aped.utils.IFAVORITES;
 import com.example.aped.utils.IXML;
 import com.example.aped.utils.TestFavorites;
@@ -50,9 +47,9 @@ public class MainActivity extends AppCompatActivity {
     /** was soll angezeigt werden in Navigation.*/
     private AppBarConfiguration mAppBarConfiguration;
     /** zur Verwendung von xml anstatt der direkten Einbindung.*/
-    public  IXML xml = new TestXML();
+    public  IXML xml;
     /** zur Verwendung von uebergabe anstatt der direkten Einbindung.*/
-    public  IIO uebergabe = new TestIO();
+    public Communicator uebergabe;
     /** zur Verwendung von favorite anstatt der direkten Einbindung.*/
     public  IFAVORITES favorite = new TestFavorites();
     /** allgemeines.*/
@@ -63,6 +60,7 @@ public class MainActivity extends AppCompatActivity {
         //checks that the permission to read and write the xml is granted
         ensurePermissions();
         setXML();
+        uebergabe = new Communicator("",8080,this);
         setContentView(R.layout.activity_main);
         Toolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
@@ -110,16 +108,12 @@ public class MainActivity extends AppCompatActivity {
                 break;
 
             case R.id.action_download_xml:
-                if (uebergabe.downloadXML() == 0) {
                     Toast.makeText(this, "Downloaded .xml",
                         Toast.LENGTH_SHORT).show();
-                }
                 break;
             case R.id.action_upload_xml:
-                if (uebergabe.uploadXML(new File("")) == 0) {
                     Toast.makeText(this, "Upload .xml",
                         Toast.LENGTH_SHORT).show();
-                }
                 break;
             default:
                 Log.e("MainActivity", "unknown item: "
diff --git a/APED/app/src/main/java/com/example/aped/communication/Communicator.java b/APED/app/src/main/java/com/example/aped/communication/Communicator.java
new file mode 100644
index 0000000..8eec165
--- /dev/null
+++ b/APED/app/src/main/java/com/example/aped/communication/Communicator.java
@@ -0,0 +1,68 @@
+package com.example.aped.communication;
+
+import android.content.Context;
+import android.util.Log;
+
+import com.android.volley.Request;
+import com.android.volley.RequestQueue;
+import com.android.volley.Response;
+import com.android.volley.VolleyError;
+import com.android.volley.toolbox.JsonObjectRequest;
+import com.android.volley.toolbox.StringRequest;
+import com.android.volley.toolbox.Volley;
+
+import org.json.JSONObject;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import kotlin.NotImplementedError;
+
+public class Communicator{
+    private String address;
+    private int port;
+    private RequestQueue requestQueue;
+
+    public Communicator(String address, int port, Context context){
+        this.address = address;
+        this.port = port;
+        requestQueue = Volley.newRequestQueue(context);
+    }
+
+    public void read(String deviceName, Response.Listener<JSONObject> responseListener) {
+        String requestString = "http://" + address + ":" + port + "/device/" + deviceName + "/";
+        JsonObjectRequest request = new JsonObjectRequest(
+                Request.Method.GET,
+                requestString,
+                null,
+                responseListener,
+                error -> Log.e("Communicator","Error during READ: " + error.getMessage())
+        );
+        requestQueue.add(request);
+    }
+
+    public void write(String deviceName, JSONObject message, Response.Listener<JSONObject> responseListener) {
+        String requestString = "http://" + address + ":" + port + "/device/" + deviceName + "/";
+        JsonObjectRequest request = new JsonObjectRequest(
+                Request.Method.POST,
+                requestString,
+                message,
+                responseListener,
+                error -> {Log.e("Communicator", "Error during WRITE: " + error.getMessage()); error.printStackTrace();}
+        );
+        requestQueue.add(request);
+    }
+
+    public void uploadXML(File xmlFile) {
+        throw new NotImplementedError();
+    }
+
+    public void downloadXML() {
+        throw new NotImplementedError();
+    }
+}
diff --git a/APED/app/src/main/java/com/example/aped/communication/IIO.java b/APED/app/src/main/java/com/example/aped/communication/IIO.java
deleted file mode 100644
index 1750374..0000000
--- a/APED/app/src/main/java/com/example/aped/communication/IIO.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package com.example.aped.communication;
-
-import java.io.File;
-
-public interface IIO
-{
-    /**
-     * reads a value from a device connected to the raspberry
-     * @param deviceName the name of the device to read from
-     * @return the value read
-     */
-    String read(String deviceName);
-
-    /**
-     * writes a value to a device connected to the raspberry
-     * @param deviceName the name of the device to write to
-     * @param value the value to write to the device
-     * @return the value written
-     */
-    String write(String deviceName, String value);
-
-    /**
-     * uploads the config.xml to the raspberry
-     * @param xmlFile the config.xml
-     * @return 0 if everything worked
-     */
-    int uploadXML(File xmlFile);
-
-    /**
-     * downloads the current config.xml from the raspberry
-     * @return 0 if everything worked
-     */
-    int downloadXML();
-}
diff --git a/APED/app/src/main/java/com/example/aped/communication/TestIO.java b/APED/app/src/main/java/com/example/aped/communication/TestIO.java
deleted file mode 100644
index b1ce57f..0000000
--- a/APED/app/src/main/java/com/example/aped/communication/TestIO.java
+++ /dev/null
@@ -1,43 +0,0 @@
-package com.example.aped.communication;
-
-import android.widget.Toast;
-
-import com.example.aped.R;
-
-import java.io.File;
-
-public class TestIO implements IIO {
-
-    @Override
-    public String read(String deviceName) {
-
-        String Wert;
-        switch (deviceName) {
-            case "stoff":
-                Wert = "TRUE";
-                break;
-            case "schnaps":
-                Wert = "FALSE";
-                break;
-            default:
-                Wert="default";
-        }
-            return Wert;
-    }
-
-    @Override
-    public String write(String deviceName, String value) {
-        return "TRUE";//Wenn erfolgreich gesendet
-    }
-
-    @Override
-    public int uploadXML(File xmlFile) {
-        return 0;
-    }
-
-    @Override
-    public int downloadXML() {
-        return 0;
-    }
-
-}
diff --git a/APED/app/src/main/java/com/example/aped/ui/all_IOs/AllIOsFragment.java b/APED/app/src/main/java/com/example/aped/ui/all_IOs/AllIOsFragment.java
index 6031695..4c7979b 100644
--- a/APED/app/src/main/java/com/example/aped/ui/all_IOs/AllIOsFragment.java
+++ b/APED/app/src/main/java/com/example/aped/ui/all_IOs/AllIOsFragment.java
@@ -71,14 +71,14 @@ public class AllIOsFragment extends Fragment {
 
             @Override
             public View getView(int i, View view, ViewGroup viewGroup) {
-                if(mainActivity.uebergabe.read(mainActivity.xml.getDeviceNames().get(i)).equals("TRUE")) {
+                /*if(mainActivity.uebergabe.read(mainActivity.xml.getDeviceNames().get(i)).equals("TRUE")) {
                     image=R.drawable.green_signal;
                 }else if (mainActivity.uebergabe.read(mainActivity.xml.getDeviceNames().get(i)).equals("FALSE")) {
                     image = R.drawable.red_signal;
                 }
-                else{
+                else{*/
                     image = R.drawable.off_signal;
-                }
+                //}
                 if (mainActivity.favorite.getFavorites().contains(mainActivity.xml.getDeviceNames().get(i))) {
                     favorite_image = android.R.drawable.btn_star_big_on;
                 }else {
@@ -120,7 +120,7 @@ public class AllIOsFragment extends Fragment {
 
                 imageView.setImageResource(image);
                 TextView_Name.setText(mainActivity.xml.getDeviceNames().get(i));
-                TextView_State.setText(mainActivity.uebergabe.read(mainActivity.xml.getDeviceNames().get(i)));
+                //TextView_State.setText(mainActivity.uebergabe.read(mainActivity.xml.getDeviceNames().get(i)));
                 ButtonView_Favoriten.setImageResource(favorite_image);
                 return view;
             }