Added

app/src/main/AndroidManifest.xml

         android:theme="@style/Theme.Ueberwachungssystem"
         tools:targetApi="31">
         <activity
-            android:name=".MainActivity"
+            android:name=".Beschleunigungssensor"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

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

 package com.example.ueberwachungssystem;
 
+import static java.lang.Math.sqrt;
+
 import android.content.Context;
 import android.hardware.Sensor;
 import android.hardware.SensorEvent;
 import android.hardware.SensorEventListener;
 import android.hardware.SensorManager;
 import android.os.Bundle;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
 import android.widget.TextView;
 
+import java.util.ArrayDeque;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Deque;
+import java.util.Iterator;
+import java.util.OptionalDouble;
+import java.util.Queue;
+
 public class Beschleunigungssensor extends AppCompatActivity implements SensorEventListener
 {
     private Logger logger;
     private SensorManager sensorManager;
-    private int sensorType = Sensor.TYPE_ACCELEROMETER;
+    private static final int sensorType = Sensor.TYPE_LINEAR_ACCELERATION;
     private Sensor sensor;
 
+    //Matrizen für Datenverarbeitung:
+    double[] linear_acceleration = new double[3];
+    int numberOfValues = 100;
+    double[][] calibrationMatrix = new double[3][numberOfValues];
+    boolean alarm = false;
+    //Preallocate memory for the data of each axis of the acceleration sensor
+    double x;
+    double y;
+    double z;
+    double betrag; //Betrag aller drei Achsen sqrt(x*x + y*y + z*z)
+
     @Override
     protected void onCreate(Bundle savedInstanceState)
     {
         super.onResume();
         if(sensor != null)
         {
-            if(sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_GAME))
+            if(sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_NORMAL))
             {
                 logger.log("Wir haben uns beim Sensor angemeldet.");
             }
         }
     }
 
+    private void checkAlarm (SensorEvent event) {
+        x = event.values[0];
+        y = event.values[1];
+        z = event.values[2];
+        betrag = sqrt(x*x + y*y + z*z);
+        double schwelle = 1.5;
+
+        if (!alarm) {
+            if (betrag > schwelle) {
+                logger.log("Betragswert über Schwelle erkannt, Alarm wird gleich angeschaltet");
+                alarm = true;
+                logger.log("Alarm an");
+                logger.log("Betrag: " + betrag + event.timestamp);
+            }
+        } else {
+            if (betrag < schwelle) {
+                logger.log("Alarm ist noch an; Neuer Betragswert unter Schwellwert: " + betrag);
+                alarm = false;
+                logger.log("Alarm wieder ausgeschaltet");
+            } else {
+                logger.log("Betragswert immer noch über Schwellwert: " + betrag + "; Alarm bleibt an.");
+            }
+        }
+    }
+    int i = 0;
+    boolean stopp_mal = false;
+
     @Override
     public void onSensorChanged(SensorEvent event)
     {
-        String sb = "t=" + event.timestamp +
-                "\nx=" + event.values[0] + // Wert legend: x = 0.04
+        checkAlarm(event);
+
+        //Alter Code, erstmal wild mit if statement ausgeschlossen
+        if (stopp_mal) {
+        if (i<numberOfValues) {
+            calibrationMatrix[0][i] = event.values[0];
+            calibrationMatrix[1][i]  = event.values[1];
+            calibrationMatrix[2][i] = event.values[2];
+            i++;
+        }
+
+        double sumX = 0;
+        double sumY = 0;
+        double sumZ = 0;
+        for (int j = 0; j<numberOfValues;j++){
+            sumX += calibrationMatrix[0][j];
+            sumY += calibrationMatrix[1][j];
+            sumZ += calibrationMatrix[2][j];
+        }
+
+        double averageX = sumX/numberOfValues;
+        double averageY = sumY/numberOfValues;
+        double averageZ = sumZ/numberOfValues;
+
+        String sb2 = "t=" + event.timestamp +
+                "\nx=" + event.values[0] + // Wert liegend: x = 0.04
                 "\ny=" + event.values[1] + // Wert liegend: y = 0.44
-                "\nz=" + event.values[2]; // Wert liegend: z = 9.90 = Erdbeschleunigung --> Wenn Ausrichtung unbekannt ist, müsste kalibrierung bei Start der Bewegungsüberwachung vorgenommen werden
-        logger.clearLog();
-        logger.log(sb);
+                "\nz=" + event.values[2] + // Wert liegend: z = 9.90 = Erdbeschleunigung
+                "\nlin_x=" + linear_acceleration[0] +
+                "\nlin_x=" + linear_acceleration[1] +
+                "\nlin_x=" + linear_acceleration[2] +
+                "\naverageX=" + averageX +
+                "\naverageY=" + averageY +
+                "\naverageZ=" + averageZ +
+                "\ni=" + i;
+
+        double schwelle = 5.0;
+
+            if (alarm = false) {
+                if (averageX + schwelle < event.values[0]) {
+                    alarm = true;
+                }
+            }
+            if (alarm = false) {
+                if (averageY + schwelle < event.values[1]) {
+                    alarm = true;
+                }
+            }
+            if (alarm = false) {
+                if (averageZ + schwelle < event.values[2]) {
+                    alarm = true;
+                }
+            }
+            if (alarm = true) {
+                if (averageX + schwelle > event.values[0]) {
+                    alarm = false;
+                }
+                if (averageY + schwelle > event.values[1]) {
+                    alarm = false;
+                }
+                if (averageZ + schwelle > event.values[2]) {
+                    alarm = false;
+                }
+            }
+
+
+            logger.clearLog();
+            logger.log(sb2);
+        }
+
     }
 
     @Override
     {
     }
 }
+
+//Sample code for deque usage. Might be not useful.
+class MovingAverage {
+    int size, windowSum = 0, count = 0;
+    Deque queue = new ArrayDeque<Integer>();
+    public MovingAverage(int size) {
+        this.size = size;
+    }
+    public double next(int val) {
+        ++count;
+        // calculate the new sum by shifting the window
+        queue.add(val);
+        int tail = count > size ? (int)queue.poll() : 0;
+        windowSum = windowSum - tail + val;
+        return windowSum * 1.0 / Math.min(size, count);
+    }
+}

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

 package com.example.ueberwachungssystem;
 
+import static java.lang.Boolean.TRUE;
+
 import androidx.appcompat.app.AppCompatActivity;
 
 import android.os.Bundle;
+import android.view.View;
+import android.widget.TextView;
+import android.widget.ToggleButton;
 
-public class MainActivity extends AppCompatActivity{
+public class MainActivity extends AppCompatActivity implements View.OnClickListener {
 
     private Logger logger;
-    private Beschleunigungssensor beschleunigungssensor;
+    //private Accelerometer beschleunigungssensor;
+    //private SensorManager sensorManager;
+    private TextView textViewLog;
+    private TextView textViewWorkerThread;
+    //private WorkerUsingThread workerUsingThread;
+    ToggleButton toggleButton1;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         setTitle(this.getClass().getSimpleName());
         setContentView(R.layout.activity_main);
 
+        // Logger setup
+        textViewLog = (TextView) findViewById(R.id.textViewLog);
+        logger = new Logger(this.getClass().getSimpleName(), textViewLog, "");
+
+        toggleButton1 = (ToggleButton) findViewById(R.id.toggleButton1); //togglebutton um Thread zu steuern
+        toggleButton1.setOnClickListener(this);
+        textViewWorkerThread = (TextView) findViewById(R.id.textViewWorkerThread); //TextView um Thread zu überwachen
+
+        logger.log("onCreate");
+    }
+
+   @Override
+    protected void onResume() {
+        super.onResume();
+    }
+    @Override
+    protected void onPause() {
+        super.onPause();
+        //beschleunigungssensor.stop();
+    }
+
+
+    @Override
+    public void onClick(View v) {
+        logger.log("toggleButton1 is clicked");
+        if (toggleButton1.isChecked()) {
+            logger.log("ToggleButton is ON");
+        } else {
+            logger.log("ToggleButton is OFF");
+        }
     }
 }

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

     tools:context=".MainActivityBackup">
 
     <TextView
+        android:id="@+id/textViewLog"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="Hello World!"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <ToggleButton
+        android:id="@+id/toggleButton1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="161dp"
+        android:layout_marginTop="115dp"
+        android:layout_marginEnd="162dp"
+        android:text="ToggleButton"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <TextView
+        android:id="@+id/textViewWorkerThread"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="174dp"
+        android:layout_marginTop="85dp"
+        android:layout_marginEnd="179dp"
+        android:text="TextView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/toggleButton1" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>

build.gradle

 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '7.4.2' apply false
-    id 'com.android.library' version '7.4.2' apply false
+    id 'com.android.application' version '8.0.0' apply false
+    id 'com.android.library' version '8.0.0' apply false
 }

gradle.properties

 # Enables namespacing of each library's R class so that its R class includes only the
 # resources declared in the library itself and none from the library's dependencies,
 # thereby reducing the size of the R class for that library
-android.nonTransitiveRClass=true
+android.nonTransitiveRClass=true
+android.defaults.buildfeatures.buildconfig=true
+android.nonFinalResIds=false

gradle/wrapper/gradle-wrapper.properties

 #Thu May 11 15:04:30 CEST 2023
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME