Kapselung in Funktionen;

Speicherung der dB-Werte nur, wenn positiv + Kommentare zum Verständnis der zu speichernden Variablen

app/build.gradle

@@ -25,7 +25,6 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
-    namespace 'com.example.greenwatch'
 }
 
 dependencies {
@@ -36,10 +35,4 @@ dependencies {
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
-
-    def camerax_version = "1.2.3"
-    implementation "androidx.camera:camera-camera2:${camerax_version}"
-    implementation "androidx.camera:camera-lifecycle:${camerax_version}"
-    implementation "androidx.camera:camera-view:${camerax_version}"
-
 }

app/src/main/AndroidManifest.xml

@@ -1,15 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
-    <uses-permission android:name="android.permission.CAMERA"/>
-    <uses-permission android:name="android.permission.BLUETOOTH"/>
-    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
-    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
-    <uses-permission android:name="android.permission.INTERNET" />
-
-    <uses-feature android:name="android.hardware.camera"/>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.greenwatch">
 
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -17,6 +10,9 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.GreenWatch">
+        <activity
+            android:name=".Mikrofon"
+            android:exported="false" />
         <activity
             android:name=".MainActivity"
             android:exported="true">
@@ -26,9 +22,6 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-
-        <activity android:name=".KameraAktivitaet" />
-
     </application>
 
 </manifest>

app/src/main/java/com/example/greenwatch/GleitenderMittelwert.java

@@ -0,0 +1,23 @@
+package com.example.greenwatch;
+
+public class GleitenderMittelwert {
+    private final float wichtungNeuerWert;
+    private final float wichtungAlterWert;
+    private float mittelwert = 0;
+
+    private boolean istMittelwertGesetzt = false;
+
+    GleitenderMittelwert(float wichtungNeuerWert) {
+        this.wichtungNeuerWert = wichtungNeuerWert;
+        this.wichtungAlterWert = 1 - this.wichtungNeuerWert;
+    }
+
+    float mittel(float wert) {
+        if (istMittelwertGesetzt) {
+            mittelwert = wert * wichtungNeuerWert + mittelwert * wichtungAlterWert;
+        } else {
+            mittelwert = wert;
+            istMittelwertGesetzt = true;
+        }
+        return mittelwert;
+}}

app/src/main/java/com/example/greenwatch/KameraAktivitaet.java

@@ -1,59 +0,0 @@
-package com.example.greenwatch;
-
-import android.graphics.ImageFormat;
-import android.media.Image;
-import android.os.Bundle;
-import android.util.Size;
-
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.camera.core.CameraSelector;
-import androidx.camera.core.ImageAnalysis;
-import androidx.camera.core.Preview;
-import androidx.camera.lifecycle.ProcessCameraProvider;
-import androidx.camera.view.PreviewView;
-import androidx.core.content.ContextCompat;
-
-import com.google.common.util.concurrent.ListenableFuture;
-
-import java.util.concurrent.ExecutionException;
-
-public class KameraAktivitaet extends AppCompatActivity {
-    private PreviewView previewView;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_demo_kamera2_nebenaktivitaet);
-        previewView = findViewById(R.id.previewView);
-        final ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(this);
-        cameraProviderFuture.addListener(() -> {
-            try {
-                bindImageAnalysis(cameraProviderFuture.get());
-            } catch (ExecutionException | InterruptedException e) {
-                e.printStackTrace();
-            }
-        }, ContextCompat.getMainExecutor(this));
-    }
-
-    private void bindImageAnalysis(ProcessCameraProvider cameraProvider) {
-        ImageAnalysis.Builder builder = new ImageAnalysis.Builder();
-        builder.setTargetResolution(new Size(640, 480));
-        builder.setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST);
-        ImageAnalysis imageAnalysis = builder.build();
-        imageAnalysis.setAnalyzer(
-                ContextCompat.getMainExecutor(this),
-                imageProxy -> {
-                    int imageFormat = imageProxy.getFormat();
-                    if (imageFormat == ImageFormat.YUV_420_888) {
-                        Image image = imageProxy.getImage();
-                    }
-                    imageProxy.close();
-                });
-
-        Preview preview = new Preview.Builder().build();
-        CameraSelector cameraSelector = new CameraSelector.Builder().requireLensFacing(CameraSelector.LENS_FACING_BACK).build();
-        preview.setSurfaceProvider(previewView.getSurfaceProvider());
-        cameraProvider.bindToLifecycle(this, cameraSelector, imageAnalysis, preview);
-    }
-}
-

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

@@ -1,40 +1,25 @@
 package com.example.greenwatch;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 import android.content.Intent;
-import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.view.View;
 import android.widget.Button;
 
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.core.app.ActivityCompat;
-import androidx.core.content.ContextCompat;
-
 public class MainActivity extends AppCompatActivity {
-    private static final int RECHTEANFORDERUNG_KAMERA = 10;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
-        Button kameraStarten = findViewById(R.id.button_camera);
-        kameraStarten.setOnClickListener(v -> {
-            if (istZugriffAufKameraErlaubt()) {
-                starteKameraAktivitaet();
-            } else {
-                zugriffAufKameraAnfordern();
+
+        ((Button)findViewById(R.id.buttonstartmicdetection)).setOnClickListener(new View.OnClickListener(){
+            @Override
+            public void onClick(View view) {
+                Intent i = new Intent(MainActivity.this, Mikrofon.class);
+                startActivity(i);
             }
         });
     }
-
-    private boolean istZugriffAufKameraErlaubt() {
-        return ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED;
-    }
-
-    private void zugriffAufKameraAnfordern() {
-        ActivityCompat.requestPermissions(this,new String[]{android.Manifest.permission.CAMERA}, RECHTEANFORDERUNG_KAMERA);
-    }
-
-    private void starteKameraAktivitaet() {
-        startActivity(new Intent(this, KameraAktivitaet.class));
-    }
 }

app/src/main/java/com/example/greenwatch/Mikrofon.java

@@ -1,4 +1,254 @@
 package com.example.greenwatch;
 
-public class Mikrofon {
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+import android.Manifest;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
+import android.media.AudioFormat;
+import android.media.AudioRecord;
+import android.media.MediaRecorder;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.widget.TextView;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+public class Mikrofon extends AppCompatActivity {
+
+    private AufnahmeTask aufnahmeTask;
+    private TextView textViewMaxAmp;
+    private TextView textViewMaxAmpdb;
+    private TextView textViewZeitstempel;
+    private static final int RECHTEANFORDERUNG_MIKROFON = 1;
+
+    private boolean detection_mic = false;
+    private String zeit = "0";
+    private boolean kalibrierung_do = true;
+    private float threshold = 40;
+    private float sensitivity = 5;
+    private final static String KEY_WERT = "KEY_WERT_" + Mikrofon.class.getSimpleName();
+    private final static String KEY_KALIBRIERUNG = "KEY_KALIBRIERUNG_" + Mikrofon.class.getSimpleName();
+
+
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_mikrofon);
+        textViewMaxAmp = (TextView) findViewById(R.id.textViewMaxAmp);
+        textViewMaxAmpdb = (TextView) findViewById(R.id.textViewMaxAmpdb);
+        textViewZeitstempel = (TextView) findViewById(R.id.textViewZeitstempel);
+        //kalibrierung_do = true;
+
+
+    }
+
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        SharedPreferences p = getPreferences(Context.MODE_PRIVATE);
+        threshold = p.getFloat(KEY_WERT, 40);
+        kalibrierung_do = p.getBoolean(KEY_KALIBRIERUNG, true);
+
+        if (!istZugriffAufMikrofonErlaubt()) {
+            zugriffAufMikrofonAnfordern();
+        }
+        if (istZugriffAufMikrofonErlaubt()) {
+            aufnahmeTask = new AufnahmeTask();
+            aufnahmeTask.execute();
+        }
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        SharedPreferences p = getPreferences(Context.MODE_PRIVATE);
+        SharedPreferences.Editor editor = p.edit();
+        editor.putFloat(KEY_WERT, threshold);
+        if(isFinishing()==true){
+            editor.putBoolean(KEY_KALIBRIERUNG, true);
+        }else {
+            editor.putBoolean(KEY_KALIBRIERUNG, false);
+        }
+        editor.commit();
+        if(aufnahmeTask!=null) {
+            aufnahmeTask.cancel(true);
+            aufnahmeTask = null;
+        }
+    }
+
+    private boolean istZugriffAufMikrofonErlaubt() {
+        if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
+            return false;
+        } else {
+            return true;
+        }
+    }
+
+    private void zugriffAufMikrofonAnfordern() {
+        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECORD_AUDIO}, RECHTEANFORDERUNG_MIKROFON);
+    }
+
+    public static String Zeitpunkt(){
+        Long tslong = System.currentTimeMillis();
+        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
+        Date date = new Date(tslong);
+        String resultdate = sdf.format(date);
+
+        return resultdate;
+    }
+
+
+    class AufnahmeTask extends AsyncTask<Long, Verarbeitungsergebnis, Void> {
+        private AudioRecord recorder;
+        private final int sampleRateInHz = 44100;
+        private final int channelConfig = AudioFormat.CHANNEL_IN_MONO;
+        private final int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
+        private int minPufferGroesseInBytes;
+        private int pufferGroesseInBytes;
+        private RingPuffer ringPuffer = new RingPuffer(10);
+        private boolean erlaubt_rise = true;
+        private boolean erlaubt_fall = true;
+
+        AufnahmeTask() {
+            minPufferGroesseInBytes = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);
+            pufferGroesseInBytes = minPufferGroesseInBytes * 2;
+            recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRateInHz, channelConfig, audioFormat, pufferGroesseInBytes);
+        }
+        //hi
+        public float kalibrieren(short[] puffer){
+            try {
+                Thread.sleep(3000);
+
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+            int anzahlIterationen = 100;
+            float sum = 0;
+            for(int i = 0; i < anzahlIterationen; i++){
+                int z = recorder.read(puffer, 0, puffer.length);
+                Verarbeitungsergebnis kalibrierung = verarbeiten(puffer, z);
+                sum += (float) kalibrierung.db;
+                System.out.println("Aktueller_Wert Kalibrierung" +kalibrierung.db);
+            }
+            System.out.println("Summe:"+sum);
+            return sum/anzahlIterationen;
+        }
+
+        public void Detektion(Verarbeitungsergebnis ergebnis){
+            if(ergebnis.db >= (threshold+sensitivity)){
+                detection_mic = true;
+                erlaubt_fall = true;
+                while(erlaubt_rise){
+                    erlaubt_rise = false;
+                    zeit = Zeitpunkt() + " - " + ergebnis.db + " - " + (threshold+sensitivity); //Überschreiben des Zeitpunkts beim Erkennen der Detektion
+                    //nur zum Testen in zeit noch ergebnis.db und threshold ausgegeben -> muss am Ende nur Zeitpunkt() rein, Rest weg
+                }
+            } else if (ergebnis.db <= (threshold)) {
+                detection_mic = false;
+                erlaubt_rise = true;
+                while(erlaubt_fall){
+                    erlaubt_fall = false;
+                    zeit = Zeitpunkt(); //erneutes Überschreiben des Zeitpunkts beim Verschwinden der Detektion
+                }
+            }
+        }
+        @Override
+        protected Void doInBackground(Long... params) {
+
+            recorder.startRecording();
+            short[] puffer = new short[pufferGroesseInBytes / 2];
+            GleitenderMittelwert gleitenderMittelwertdB = new GleitenderMittelwert(0.2f);
+            float db = 0;
+
+
+            //kalibrierung
+            if(kalibrierung_do){
+                threshold = kalibrieren(puffer);
+                kalibrierung_do = false;
+            }
+
+
+            for (; ; ) {
+                if (isCancelled()) {
+                    break;
+                } else {
+                    //ergebnis ermitteln
+                    int n = recorder.read(puffer, 0, puffer.length);
+                    Verarbeitungsergebnis ergebnis = verarbeiten(puffer, n);
+
+                    //Mittelwertberechnnung
+                    db = (float) ergebnis.db;
+                    db = gleitenderMittelwertdB.mittel(db);
+                    ergebnis.db = (int) db;
+
+                    //Db Wert mit Schwellwert vergleichen und Warnung setzen
+                    Detektion(ergebnis);
+                    publishProgress(ergebnis);
+
+                    try {
+                        Thread.sleep(10);
+                    } catch (InterruptedException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+            recorder.release();
+            return null;
+        }
+
+        private Verarbeitungsergebnis verarbeiten(short[] daten, int n) {
+            String status;
+            short maxAmp = -1;
+            int db = 0, db_wert = 0;
+
+            if (n == AudioRecord.ERROR_INVALID_OPERATION) {
+                status = "ERROR_INVALID_OPERATION";
+            } else if (n == AudioRecord.ERROR_BAD_VALUE) {
+                status = "ERROR_BAD_VALUE";
+            } else {
+                status = "OK";
+                short max = 0;
+                for (int i = 0; i < n; i++) {
+                    if (daten[i] > max) {
+                        max = daten[i];
+                    }
+                }
+                ringPuffer.hinzufuegen(max);
+                maxAmp = ringPuffer.maximum();
+            }
+            //Umwandlung Amplitudenwert in dB
+            db_wert = (int) (20*Math.log10(maxAmp));
+            if (db_wert > 0){
+                db = db_wert;
+            }
+
+
+            return new Verarbeitungsergebnis(status, maxAmp, db);
+        }
+
+        /////////////////////////////////////////////
+        @Override
+        protected void onProgressUpdate(Verarbeitungsergebnis... progress) {
+            super.onProgressUpdate(progress);
+
+
+            System.out.println(detection_mic);
+            System.out.println(zeit);
+            textViewZeitstempel.setText(zeit);
+
+            textViewMaxAmpdb.setText("" + progress[0].db);
+            textViewMaxAmp.setText("" + progress[0].maxAmp);
+
+        }
+    }
+    /////////////////////////////////////////////
+
 }

app/src/main/java/com/example/greenwatch/RingPuffer.java

@@ -0,0 +1,63 @@
+package com.example.greenwatch;
+
+public class RingPuffer {
+
+    private short[] puffer;
+    private final int laenge;
+    private int anzahlEnthaltenerDaten;
+    private int position;
+
+
+    public RingPuffer(int n) {
+        laenge = n;
+        anzahlEnthaltenerDaten = 0;
+        position = 0;
+        puffer = new short[laenge];
+    }
+
+    public void hinzufuegen(short wert) {
+        puffer[position] = wert;
+        position++;
+        if (position >= laenge) {
+            position = 0;
+        }
+        if (anzahlEnthaltenerDaten < laenge) {
+            anzahlEnthaltenerDaten++;
+        }
+    }
+
+        /*public void hinzufuegen(short[] daten) {
+            for (short d : daten) {
+                puffer[position] = d;
+                position++;
+                if (position >= laenge) {
+                    position = 0;
+                }
+            }
+            if (anzahlEnthaltenerDaten < laenge) {
+                anzahlEnthaltenerDaten += daten.length;
+                if (anzahlEnthaltenerDaten >= laenge) {
+                    anzahlEnthaltenerDaten = laenge;
+                }
+            }
+        }*/
+
+    public short maximum() {
+        short max = 0;
+        for (int i = 0; i < anzahlEnthaltenerDaten; i++) {
+            if (puffer[i] > max) {
+                max = puffer[i];
+            }
+        }
+        return max;
+    }
+
+       /* public float mittelwert() {
+            float summe = 0;
+            for (int i = 0; i < anzahlEnthaltenerDaten; i++) {
+                summe += puffer[i];
+            }
+            return summe / anzahlEnthaltenerDaten;
+        }*/
+}
+

app/src/main/java/com/example/greenwatch/Verarbeitungsergebnis.java

@@ -0,0 +1,13 @@
+package com.example.greenwatch;
+
+public class Verarbeitungsergebnis {
+    String status;
+    short maxAmp;
+    int db;
+//
+    Verarbeitungsergebnis(String status, short maxAmp, int db) {
+        this.status = status;
+        this.maxAmp = maxAmp;
+        this.db = db;
+    }
+}

app/src/main/res/layout/activity_demo_kamera2_nebenaktivitaet.xml

@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".KameraAktivitaet">
-
-    <FrameLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:id="@+id/erklaerung">
-        <androidx.camera.view.PreviewView
-            android:id="@+id/previewView"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"/>
-    </FrameLayout>
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="vertical">
-
-        <TextView
-            android:id="@+id/alarm"
-            android:layout_width="match_parent"
-            android:layout_height="0dp"
-            android:layout_weight="1"
-            android:text="" />
-
-        <TextView
-            android:id="@+id/luminanz"
-            android:layout_width="match_parent"
-            android:layout_height="0dp"
-            android:layout_weight="1"
-            android:layout_gravity="center"
-            android:gravity="center"
-            android:textSize="100sp"
-            android:textColor="#9999ff"/>
-    </LinearLayout>
-
-</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -7,16 +7,12 @@
     tools:context=".MainActivity">
 
     <Button
-        android:id="@+id/button_camera"
+        android:id="@+id/buttonstartmicdetection"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Kamera starten"
+        android:text="Starte Mikrofon Detection"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintHorizontal_bias="0.129"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.931" />
-
-
+        app:layout_constraintTop_toTopOf="parent" />
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingBottom="16dp"
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp"
+    android:paddingTop="16dp"
+    tools:activity="com.example.greenwatch">
+
+
+
+
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="max. Amp: "
+        android:id="@+id/labelMaxAmp"
+        android:layout_alignParentTop="true"
+        android:layout_alignParentStart="true"/>
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/textViewMaxAmp"
+        android:text=" "
+        android:layout_alignBaseline="@+id/labelMaxAmp"
+        android:layout_toEndOf="@+id/labelMaxAmpdb"/>
+
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="max. Amp in dB: "
+        android:id="@+id/labelMaxAmpdb"
+        android:layout_below="@+id/labelMaxAmp"
+        android:layout_alignParentStart="true"/>
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/textViewMaxAmpdb"
+        android:text=" "
+        android:layout_alignBaseline="@+id/labelMaxAmpdb"
+        android:layout_toEndOf="@+id/labelMaxAmpdb"/>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Meldung: "
+        android:id="@+id/labelZeitstempel"
+        android:layout_below="@+id/labelMaxAmpdb"
+        android:layout_alignParentStart="true"/>
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/textViewZeitstempel"
+        android:text=" "
+        android:layout_alignBaseline="@+id/labelZeitstempel"
+        android:layout_toEndOf="@+id/labelMaxAmpdb"/>
+
+
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:id="@+id/scrollView3"
+        android:layout_below="@+id/labelMaxAmpdb"
+        android:layout_alignParentStart="true">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:id="@+id/textViewLogger"/>
+    </ScrollView>
+
+</RelativeLayout>

build.gradle

@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '8.0.0' apply false
-    id 'com.android.library' version '8.0.0' apply false
+    id 'com.android.application' version '7.1.3' apply false
+    id 'com.android.library' version '7.1.3' apply false
 }
 
 task clean(type: Delete) {

gradle.properties

@@ -18,6 +18,4 @@ 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.defaults.buildfeatures.buildconfig=true
-android.nonFinalResIds=false
+android.nonTransitiveRClass=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 #Thu May 11 14:50:16 CEST 2023
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME