Changed to a (hopefully) working version of the Accelerometer

# Conflicts:
#	app/src/main/java/com/example/ueberwachungssystem/Beschleunigungssensor.java

Notiz.txt

@@ -0,0 +1,3 @@
+Sensor als Service einrichten, der aus Activity heraus gestartet werden kann.
+Stichwort: Intent
+Siehe Skript Teil 1

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

@@ -0,0 +1,139 @@
+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.widget.TextView;
+
+import java.util.concurrent.LinkedBlockingQueue;
+
+
+/**
+ * Accelerometer inherits some methods from abstract Detector class (more info there)
+ *
+ *
+ * USE FROM MAIN ACTIVITY:
+ *
+ * Accelerometer beschleunigungssensor = new Accelerometer(this);
+ * onCreate:
+ * //Accelerometer Setup
+ * beschleunigungssensor = new Accelerometer(this, logger, textViewLog);   //logger and textview only for debugging necessary
+ * beschleunigungssensor.getSensor();
+ *
+ * //Starting Detection:
+ * beschleunigungssensor.startDetection();
+ * //Stopping Detection: also recommended at onPause to avoid unnecessary battery consumption
+ * beschleunigungssensor.stopDetection();
+ *
+ * */
+
+public class Accelerometer extends Detector implements SensorEventListener {
+
+    Logger logger;
+    public SensorManager sensorManager;
+    private static final int sensorType = Sensor.TYPE_LINEAR_ACCELERATION;
+    private Sensor accelerometer;
+    private Context context;
+    boolean alarm = false;
+    //Preallocate memory for the data of each axis of the acceleration sensor
+    float x;
+    float y;
+    float z;
+    float betrag; //Betrag aller drei Achsen sqrt(x*x + y*y + z*z)
+    private DetectionReport detectionReport;
+    TextView textView;
+
+    //Queue for taking in values
+    LinkedBlockingQueue<Float> linkedBlockingQueue = new LinkedBlockingQueue<>();
+
+
+    // In constructor pass Activity, Context and TextView from MainActivity in Accelerometer class
+    public Accelerometer(Context context, Logger mainLogger, TextView textView){
+        super(context); //von Detektor
+        logger = mainLogger;
+        this.context = context;
+        this.textView = this.textView;
+        //Logger logger = new Logger(this.getClass().getSimpleName(), textViewLog, "");
+    }
+
+    public void getSensor(){
+        sensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
+        if(sensorManager.getSensorList(sensorType).size()==0) {
+            logger.log("Es gibt den gewünschten Sensor nicht");
+            accelerometer = null;
+        }
+        else {
+            accelerometer = sensorManager.getSensorList(sensorType).get(0);
+            logger.log("Sensor gefunden");
+        }
+    }
+
+    @Override
+    public void onSensorChanged(SensorEvent event) {
+        try {
+            checkAlarm(event);
+        } catch (InterruptedException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    StringBuffer stringBuffer = new StringBuffer();
+
+    public void checkAlarm (SensorEvent event) throws InterruptedException {
+        x = event.values[0];
+        y = event.values[1];
+        z = event.values[2];
+        betrag = (float) sqrt(x*x + y*y + z*z);
+        float threshold = 1.5F;
+
+        if (!alarm) {
+            if (betrag > threshold) {
+                alarm = true;
+                detectionReport = new DetectionReport("Accelerometer1", "Bewegung", betrag);
+
+                stringBuffer.append("\nDetectionReport = ").append(detectionReport).append("\nAlarm an");
+                logger.clearLog();
+                logger.log(stringBuffer.toString());
+                stringBuffer.delete(0, stringBuffer.length());
+            }
+        } else {
+            if (betrag < threshold) {
+                stringBuffer.append("\nAlarm noch an; Neuer Betragswert unter Schwellwert:").append(betrag);
+                //logger.log("Alarm ist noch an; Neuer Betragswert unter Schwellwert: " + betrag);
+                alarm = false;
+                //logger.log("Alarm" + alarm);
+                //logger.log("Alarm wieder ausgeschaltet");
+                stringBuffer.append("\nAlarm = ").append(alarm);
+            } else {
+                logger.log("Betragswert immer noch über Schwellwert: " + betrag + "; Alarm bleibt an.");
+            }
+            //logger.clearLog();
+            logger.log(stringBuffer.toString());
+            stringBuffer.delete(0, stringBuffer.length());
+        }
+    }
+
+    @Override
+    public void onAccuracyChanged(Sensor sensor, int accuracy) {
+    }
+
+    @Override
+    public void startDetection() {
+        // entspricht void start()
+        if (accelerometer != null) {
+            sensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_GAME);
+            logger.log("Sensor registriert");
+        }
+    }
+
+    @Override
+    public void stopDetection() {
+        // entspricht void stop()
+        sensorManager.unregisterListener(this, accelerometer);
+        logger.log("Vom Sensor abgemeldet");
+    }
+}

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

@@ -0,0 +1,123 @@
+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 static final int sensorType = Sensor.TYPE_LINEAR_ACCELERATION;
+    private Sensor sensor;
+    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.onCreate(savedInstanceState);
+        setTitle(this.getClass().getSimpleName());
+        TextView textView = new TextView(this);
+        setContentView(textView);
+
+        logger = new Logger(this.getClass().getSimpleName(),textView,"");
+
+        sensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
+        if(sensorManager.getSensorList(sensorType).size()==0)
+        {
+            logger.log("Es gibt den gewünschten Sensor nicht");
+            sensor = null;
+        }
+        else
+        {
+            sensor = sensorManager.getSensorList(sensorType).get(0);
+            logger.log("Accelerometer gefunden.");
+        }
+    }
+
+    @Override
+    protected void onResume()
+    {
+        super.onResume();
+        if(sensor != null)
+        {
+            if(sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_NORMAL))
+            {
+                logger.log("Wir haben uns beim Sensor angemeldet.");
+            }
+            else
+            {
+                logger.log("Das Anmelden beim Sensor hat nicht so gut geklappt");
+            }
+        }
+    }
+
+    @Override
+    protected void onPause()
+    {
+        super.onPause();
+        if(sensor != null) {
+            sensorManager.unregisterListener(this, sensor);
+            logger.log("Wir haben uns beim Sensor abgemeldet");
+        }
+    }
+
+    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 = 0.05;
+
+        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.");
+            }
+        }
+    }
+
+    @Override
+    public void onSensorChanged(SensorEvent event)
+    {
+        checkAlarm(event);
+    }
+
+    @Override
+    public void onAccuracyChanged(Sensor sensor, int accuracy)
+    {
+    }
+}

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

@@ -0,0 +1,36 @@
+package com.example.ueberwachungssystem;
+
+import android.util.Log;
+
+import java.util.Calendar;
+
+/** Detection Report Class */
+public class DetectionReport {
+    public String timeStamp;
+    public String detectionType;
+    public float detectedValue;
+    public String detectorID;
+
+    public DetectionReport(String detectorID, String detectionType, float detectedAmplitude) {
+        this.timeStamp = String.valueOf(Calendar.getInstance().getTime());
+        this.detectionType = detectionType;
+        this.detectedValue = detectedAmplitude;
+        this.detectorID = detectorID;
+    }
+
+
+    /** Get Detection Report in String format */
+    public String toString() {
+        String time = "Time: " + "[" + this.timeStamp + "]";
+        String type = "Type: " + "[" + this.detectionType + "]";
+        String value = "Value: " + "[" + this.detectedValue + "]";
+        String id = "ID: " + "[" + this.detectorID + "]";
+
+        return String.join("\t", time, type, value, id);
+    }
+
+    /** Debug Report */
+    public void log(String tag) {
+        Log.d(tag, this.toString());
+    }
+}

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

@@ -0,0 +1,39 @@
+package com.example.ueberwachungssystem;
+
+import android.content.Context;
+import androidx.annotation.NonNull;
+
+
+abstract public class Detector {
+    private OnDetectionListener listener;
+
+    /** Constructor - takes context of current activity */
+    public Detector(Context context) {};
+
+
+    /** On Detection Listener - runs when violation is reported */
+    public interface OnDetectionListener {
+        void onDetection(@NonNull DetectionReport detectionReport);
+    }
+    public void setOnDetectionListener(@NonNull OnDetectionListener listener) {
+        this.listener = listener;
+    }
+
+
+    /** Triggers onDetectionListener - call this to trigger violation/alarm */
+    private void reportViolation(String detectorID, String detectionType, float amplitude) {
+        if (listener != null) {
+            DetectionReport detectionReport = new DetectionReport(detectorID, detectionType, amplitude);
+            listener.onDetection(detectionReport);
+        } else {
+            throw new IllegalStateException("No listener set for violation reporting");
+        }
+    }
+
+
+    /** Starts Detection (abstract method: needs to be overridden in child class) */
+    public abstract void startDetection();
+
+    /** Stops Detection (abstract method: needs to be overridden in child class) */
+    public abstract void stopDetection();
+}

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

@@ -0,0 +1,44 @@
+package com.example.ueberwachungssystem;
+
+import android.widget.TextView;
+import android.util.Log;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+public class Logger {
+    private TextView textView;
+    private StringBuffer sb = new StringBuffer();
+    private String tag;
+
+    public Logger(String tag, TextView textView, String logInitText) {
+        this.tag = tag;
+        this.textView = textView;
+        sb.append(logInitText);
+    }
+
+    public void log(String s) {
+        Log.d(tag, s);
+        sb.append(s).append("\n");
+        if (textView != null) {
+            textView.setText(sb.toString());
+        }
+    }
+    public void log(Exception e) {
+        StringWriter sw = new StringWriter();
+        e.printStackTrace(new PrintWriter(sw));
+        log(sw.toString());
+    }
+
+    public void clearLog() {
+        sb.setLength(0);
+        if (textView != null) {
+            textView.setText("");
+        }
+    }
+
+    public String getLoggedText() {
+        return sb.toString();
+    }
+}
+
+

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

@@ -1,14 +1,77 @@
 package com.example.ueberwachungssystem;
 
+import static java.lang.Boolean.TRUE;
+
 import androidx.appcompat.app.AppCompatActivity;
 
+import android.content.Context;
+import android.hardware.SensorEvent;
 import android.os.Bundle;
+import android.text.method.ScrollingMovementMethod;
+import android.view.View;
+import android.widget.Button;
+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 Accelerometer beschleunigungssensor;
+    private TextView textViewLog;
+    private Button button1;
+    ToggleButton toggleButton1;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        setTitle(this.getClass().getSimpleName());
         setContentView(R.layout.activity_main);
+
+        // Logger setup
+        textViewLog = findViewById(R.id.textViewLog);
+        textViewLog.setMovementMethod(new ScrollingMovementMethod());
+        logger = new Logger(this.getClass().getSimpleName(), textViewLog, "");
+
+        toggleButton1 = findViewById(R.id.toggleButton1); //togglebutton um Detektion zu steuern
+        toggleButton1.setOnClickListener(this);
+
+        //Button to clear Log while Debugging
+        button1 = (Button) findViewById(R.id.button1);
+        button1.setOnClickListener(this);
+
+        //Accelerometer Setup
+        beschleunigungssensor = new Accelerometer(this, logger, textViewLog);   //logger and textview only for debugging necessary
+        beschleunigungssensor.getSensor();
+
+        logger.log("onCreate");
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+    }
+    @Override
+    protected void onPause() {
+        super.onPause();
+        beschleunigungssensor.stopDetection();
+    }
+
+    @Override
+    public void onClick(View v) {
+        logger.log("toggleButton1 is clicked");
+        if(v == toggleButton1) {
+            if (toggleButton1.isChecked()) {
+                logger.log("ToggleButton is ON");
+                beschleunigungssensor.startDetection();
+                logger.log("Detection started");
+
+            } else {
+                logger.log("ToggleButton is OFF");
+                beschleunigungssensor.stopDetection();
+                logger.log("Detection stopped");
+            }
+        } else if (v == button1) {
+            logger.clearLog(); //just to clear log manually if it's too full
+        }
     }
 }

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

@@ -0,0 +1,63 @@
+package com.example.ueberwachungssystem;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import java.util.concurrent.LinkedBlockingQueue;
+
+public class SensorValueThread implements Runnable {
+
+    private volatile boolean running = false;
+    private Thread thread;
+    private String threadname = "sensorValueThread";
+    Logger logger;
+    float x;
+    LinkedBlockingQueue<Float> linkedBlockingQueue;
+    //AppCompatActivity activity;
+
+    //Constructor muss die LinkedBlockingQueue übergeben bekommen
+    public SensorValueThread(LinkedBlockingQueue linkedBlockingQueue){
+        this.linkedBlockingQueue = linkedBlockingQueue;
+    }
+
+    @Override
+    public void run() {
+        while (running){
+            //Code to execute while running == true, i.e. reading queue and calculate sth.
+            try {
+                x = linkedBlockingQueue.take();
+
+                Thread.sleep(100);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    void start() {
+        logger.log("Starting " + threadname + "...");
+        running = true;
+        thread = new Thread(this);
+        thread.setName(threadname);
+        thread.start();
+        logger.log("..." + threadname + " started");
+    }
+
+    void stop() {
+        if (!running) {
+            logger.log(threadname + " not running");
+        } else {
+            logger.log("Stopping " + threadname + "...");
+            running = false;
+            while(true){
+                try {
+                    thread.join();
+                    logger.log("... " + threadname + " stopped");
+                    break;
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+
+}

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

@@ -0,0 +1,70 @@
+package com.example.ueberwachungssystem;
+
+import android.content.Context;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class ThreadDemo implements Runnable {
+    private volatile boolean running = false;
+    private Thread thread;
+    private String threadname = "testThread";
+    Logger logger;
+
+    // Passing Activity's instance as argument on worker thread
+    AppCompatActivity activity;
+    public ThreadDemo(AppCompatActivity activity){
+        this.activity = activity;
+    }
+
+    //Method print which delegates access on MainActivity to runOnUiThread
+    private void print(final String s) {
+        activity.runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                //textViewWorkerThread.setText(s);
+            }
+        });
+    }
+
+    @Override
+    public void run() {
+        int i = 0;
+        while (running) {
+            i++;
+            print(String.valueOf(i));
+            try {
+                Thread.sleep(100);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+        //print(activity.getString(R.string.workerThread) + " endet mit " + i);
+    }
+
+    void start() {
+        logger.log("Starting " + threadname + "...");
+        running = true;
+        thread = new Thread(this);
+        thread.setName(threadname);
+        thread.start();
+        logger.log("..." + threadname + " started");
+    }
+    void stop() {
+        if (!running) {
+            logger.log(threadname + " not running");
+        } else {
+            logger.log("Stopping " + threadname + "...");
+            running = false;
+            while(true){
+                try {
+                    thread.join();
+                    logger.log("... " + threadname + " stopped");
+                    break;
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+}

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

@@ -7,12 +7,57 @@
     tools:context=".MainActivity">
 
     <TextView
+        android:id="@+id/textViewLog"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
+        android:layout_marginStart="32dp"
+        android:layout_marginTop="60dp"
+        android:layout_marginEnd="32dp"
+        android:maxLines="25"
+        android:scrollbars="vertical"
+        android:text="TextViewLoggerMain"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/textViewWorkerThread"
+        app:layout_constraintVertical_bias="0.0" />
+
+    <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="32dp"
+        android:layout_marginTop="16dp"
+        android:layout_marginEnd="32dp"
+        android:text="textViewWorkerThreadTextView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/toggleButton1" />
+
+    <Button
+        android:id="@+id/button1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="35dp"
+        android:layout_marginTop="31dp"
+        android:layout_marginEnd="282dp"
+        android:layout_marginBottom="100dp"
+        android:text="Clear Log"
+        app:layout_constraintBottom_toTopOf="@+id/textViewWorkerThread"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>

build.gradle

@@ -1,5 +1,5 @@
 // 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

@@ -18,4 +18,6 @@ android.useAndroidX=true
 # 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

@@ -1,6 +1,6 @@
 #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