Version 2.1 working

app/src/main/java/com/example/ueberwachungssystem/Detection/DetectorService.java

 
     public void stringToStringbuffer(String string){
         if(string != null) {
-            stringBufferWifi.append(string).append("\n");
+            stringBufferWifi.insert(0,string + "\n");
         }
     }
 
 
     }
 
+
+
+
     public boolean checkState(String string){
         Log.d("state", String.valueOf(splitString(string)[4].equals("An")));
         return splitString(string)[4].equals("An");

app/src/main/java/com/example/ueberwachungssystem/MainActivity.java

             detectorService.setOnDetectionListener(new DetectorService.OnDetectionListener() {
                 @Override
                 public void onDetection(@NonNull StringBuffer stringBuffer) {
-                    Log.d("onDetection", stringBuffer.toString());
+                    Log.d("onDetection", stringBuffer.toString()); //Für oli hier Textview einbauen
                 }
             });
         }

app/src/main/java/com/example/ueberwachungssystem/WifiCommunication.java

     volatile private boolean running;
 
     private boolean Gruppe =true;
+    private boolean showMessage = true;
+
+    StringBuffer rxStringBuffer = new StringBuffer();
 
     private OnConnectionListener listener;
     @SuppressLint("SetTextI18n")
                     socket.receive(rxPacket);
                     rxString = new String(receiveData, 0, rxPacket.getLength());
                     String[] splitrxString = rxString.split(",");
+                    String[] splitrxStringBuffer = splitBufferIntoStrings(rxStringBuffer);
+                    for(String elem: splitrxStringBuffer){
+                        if(elem.equals(rxString)){
+                            showMessage = false;
+                        }else{
+                            showMessage = true;
+                        }
+                    }
                     if(Gruppe){
-                        if(!previousRxString.equals(rxString) && splitrxString[0].equals("1") && splitrxString.length==7) {
-                            //rxStringBuffer.append(rxString).append("\n");
+                        if(!previousRxString.equals(rxString) && splitrxString[0].equals("1") && splitrxString.length==7 && showMessage) {
+                            rxStringBuffer.append(rxString).append("\n");
+                            Log.d("empfangen", rxString);
+                            sendWifiData(rxString);
+                            //mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText(rxStringBuffer));
+                            previousRxString = rxString;
+                        }
+                    }else{
+                        if(!previousRxString.equals(rxString) && splitrxString[0].equals("1") && splitrxString.length==7 && showMessage) {
+                            rxStringBuffer.append(rxString).append("\n");
                             Log.d("empfangen", rxString);
                             sendWifiData(rxString);
                             //mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText(rxStringBuffer));
                             previousRxString = rxString;
                         }
                     }
-
                 } while (running);
             }
             catch (IOException e) {
                     if(send)
                     {
                         send = false;
-                        SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
+                        /*SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
                         Date curDate = new Date(System.currentTimeMillis());
-                        String str = formatter.format(curDate);
+                        String str = formatter.format(curDate);*/
                         byte[] send_Data = new byte[512];
                         String txString = (messageToSend); //"1," +str+ ",Gruppe2," + getLocalIpAddress() + ",An,Video,"
                         Log.d("send", txString);
 
                         DatagramPacket txPacket = new DatagramPacket(send_Data, txString.length(), address, port);
 
-                        for(int i = 0; i < 300; i++) {
+                        for(int i = 0; i < 500; i++) {
                             socket.send(txPacket);
                         }
                     }
         running = false;
         socket.close();
     }
+    public String[] splitBufferIntoStrings(StringBuffer string){
+        String[] splitrxString2 = string.toString().split("\n");
+        return splitrxString2;
+    }
 }