Pre-AlphaV3

.idea/.name

@@ -0,0 +1 @@
+Detection

app/build.gradle

@@ -1,5 +1,7 @@
 plugins {
     id 'com.android.application'
+    id 'com.google.gms.google-services'
+
 }
 
 android {
@@ -34,10 +36,12 @@ dependencies {
     implementation 'com.google.android.material:material:1.3.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
     implementation 'com.google.android.gms:play-services-maps:17.0.1'
+    implementation 'com.google.firebase:firebase-database:20.0.0'
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     implementation "com.google.android.gms:play-services-location:15.0.1" //Important to find the location from the device
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
 
     implementation("com.google.guava:guava:30.1.1-jre")
+
 }

app/google-services.json

@@ -0,0 +1,69 @@
+{
+  "project_info": {
+    "project_number": "957720376634",
+    "firebase_url": "https://schockwelle-mdt5-g1-default-rtdb.europe-west1.firebasedatabase.app",
+    "project_id": "schockwelle-mdt5-g1",
+    "storage_bucket": "schockwelle-mdt5-g1.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:957720376634:android:7e4e3f644d052e6f70cc03",
+        "android_client_info": {
+          "package_name": "de.edotzlaff.detection"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "957720376634-gvj86hvfrnt5npvqfbsb8lnu77fgaumh.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyDNnG6F_VIzKbu4r7QBqsUZ3z6ELFbgyuc"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "957720376634-gvj86hvfrnt5npvqfbsb8lnu77fgaumh.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:957720376634:android:fdc03f689ff71b2f70cc03",
+        "android_client_info": {
+          "package_name": "de.edotzlaff.schockwelle"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "957720376634-gvj86hvfrnt5npvqfbsb8lnu77fgaumh.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyDNnG6F_VIzKbu4r7QBqsUZ3z6ELFbgyuc"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "957720376634-gvj86hvfrnt5npvqfbsb8lnu77fgaumh.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

app/src/main/AndroidManifest.xml

@@ -10,12 +10,13 @@
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.VIBRATE" />
 
     <application
         android:allowBackup="true"
-        android:icon="@mipmap/ic_launcher"
+        android:icon="@mipmap/ic_trianglesign"
         android:label="@string/app_name"
-        android:roundIcon="@mipmap/ic_launcher_round"
+        android:roundIcon="@mipmap/ic_trianglesign"
         android:supportsRtl="true"
         android:theme="@style/Theme.Detection">
 

app/src/main/java/de/edotzlaff/detection/EarthquakeLocation.java

@@ -37,8 +37,7 @@ public class EarthquakeLocation extends FragmentActivity implements OnMapReadyCa
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_earthquake_location);
         // Obtain the SupportMapFragment and get notified when the map is ready to be used.
-        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
-                .findFragmentById(R.id.map);
+        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
         mapFragment.getMapAsync(this);
     }
 

app/src/main/java/de/edotzlaff/detection/MainActivity.java

@@ -1,6 +1,7 @@
 package de.edotzlaff.detection;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.RequiresApi;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
@@ -15,8 +16,10 @@ import android.hardware.SensorEvent;
 import android.hardware.SensorEventListener;
 import android.hardware.SensorManager;
 import android.location.Location;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.CountDownTimer;
+import android.provider.Settings;
 import android.util.Log;
 import android.view.View;
 import android.widget.Button;
@@ -30,7 +33,14 @@ import com.google.android.gms.location.LocationServices;
 import com.google.android.gms.maps.GoogleMap;
 import com.google.android.gms.tasks.OnCompleteListener;
 import com.google.android.gms.tasks.Task;
-
+import com.google.firebase.database.DataSnapshot;
+import com.google.firebase.database.DatabaseError;
+import com.google.firebase.database.DatabaseReference;
+import com.google.firebase.database.FirebaseDatabase;
+import com.google.firebase.database.ValueEventListener;
+
+import java.time.LocalDateTime;
+import java.time.ZoneOffset;
 import java.util.Calendar;
 import java.util.Objects;
 
@@ -48,11 +58,14 @@ public class MainActivity extends AppCompatActivity {
 
     Long currentTime;
     Location currentLocation;
-    // private DatabaseReference mDatenbank;
+    private DatabaseReference mDatenbank;
     private double breitengrad;
     private double laengengrad;
     private boolean useOwnGPS = true;
     private int indexID = 1;
+    private int writtenDevices = 1;
+    private boolean allowCalculation = true;
+
     //##########################################################################################################################################################################
     //##################################################################  vvv SensorParameter vvv  ##############################################################################
     private SensorManager mSensorManager;
@@ -65,7 +78,6 @@ public class MainActivity extends AppCompatActivity {
     private boolean mShakeDetectionIsActive = false;
     private boolean mShakeDetected = false;
     private boolean allowShakeEvent = true;
-
     //##################################################################  ^^^^ SensorParameter ^^^^  ############################################################################
     //##########################################################################################################################################################################
 
@@ -73,18 +85,13 @@ public class MainActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
-
         if (isServiceOK()){
             init();
         }
-
-        //Detection funktion here
         sensorManagementInit();
+        initDataBase();
         getLocationPermission();
-
-        //DB function here
-
-
+        getDataBaseValuesWithListener();
     }
 
     //##################################################################  vvv Detection Code vvv  ###################################################################################
@@ -100,6 +107,7 @@ public class MainActivity extends AppCompatActivity {
         mShakeDetectionIsActive = false;
         mShakeDetected = false;
     }
+
     private final SensorEventListener mSensorListener = new SensorEventListener() {
         @Override
         public void onSensorChanged(SensorEvent event) {
@@ -127,14 +135,11 @@ public class MainActivity extends AppCompatActivity {
                         */
                         }
 
-
                         public void onFinish() {
                             if (Math.abs(mAccel) > mUpperThreshold) {
                                 mShakeDetectionIsActive = false;
                                 mShakeDetected = true;
-
                                 earthquakeDetected();
-
                             } else {
                                 mShakeDetectionIsActive = true;
                                 mShakeDetected = false;
@@ -153,12 +158,10 @@ public class MainActivity extends AppCompatActivity {
     {
         Toast.makeText(getApplicationContext(), "!Earthquake detected!", Toast.LENGTH_SHORT).show();
         Log.d(TAG,"!Earthquake detected!");
-        //setDataBaseValues();
+        //Hier wird bei Vibration in Db geschrieben
+        getDataBaseValuesNoListenerForVibration();
         Button buttonReadyToDetect = (Button) findViewById(R.id.buttonReadyToDetect);
         buttonReadyToDetect.setEnabled(true);
-
-
-
     }
 
     //##################################################################  ^^^^ Detection Code ^^^^  ###################################################################################
@@ -197,7 +200,7 @@ public class MainActivity extends AppCompatActivity {
                             }
                             currentLocation.setLatitude(breitengrad);
                             currentLocation.setLongitude(laengengrad);
-                            setText();
+                            //setText();
                         }
                         else{
                             Toast.makeText(MainActivity.this, "Current Location unavailable", Toast.LENGTH_SHORT).show();
@@ -218,6 +221,257 @@ public class MainActivity extends AppCompatActivity {
 
     //TODO Aron
 
+    //###### Für Start der APP ####
+    public void initDataBase()
+    {
+        getDataBaseValuesNoListener();
+    }
+    public void getDataBaseValuesNoListener()
+    {
+        mDatenbank = FirebaseDatabase.getInstance().getReference().child("overviewdetection");
+        mDatenbank.get().addOnCompleteListener(new OnCompleteListener<DataSnapshot>() {
+            @Override
+            public void onComplete(@NonNull Task<DataSnapshot> task) {
+                if (!task.isSuccessful()) {
+                    System.out.println("Datenbank Fehler in getDataBaseValuesNoListener");
+                }
+                else {
+                    analyzeForEmptyDB(task.getResult());
+                }
+            }
+        });
+    }
+    //Methode bestimmt, ob DB mit leer IDGn Felder überhaupt vorhanden ist
+    public void analyzeForEmptyDB(DataSnapshot data)
+    {
+        String androidid;
+        String localedatetime;
+        String breitengrad;
+        String laengengrad;
+        String timestamp;
+        String ampltiude;
+        int emptyIDG =0;
+
+        for (int i=1; i<=data.getChildrenCount(); i++)
+        {
+            androidid = data.child("IDG" + i).child("a_androidid").getValue().toString();
+            localedatetime = data.child("IDG" + i).child("b_localdatetime").getValue().toString();
+            breitengrad = data.child("IDG" + i).child("d_breitengrad").getValue().toString();
+            laengengrad = data.child("IDG" + i).child("e_laengengrad").getValue().toString();
+            timestamp = data.child("IDG" + i).child("h_timestamp").getValue().toString();
+            ampltiude = data.child("IDG" + i).child("i_amplitude").getValue().toString();
+
+            if(androidid.isEmpty() && localedatetime.isEmpty() && breitengrad.isEmpty() && laengengrad.isEmpty() && timestamp.isEmpty() && ampltiude.isEmpty())
+            {
+                emptyIDG++;
+            }else{
+                emptyIDG--;
+            }
+        }
+        //Wenn DB nicht vorhanden ODER leer ist, erstelle diese DB mit IDG 1-5
+        if(emptyIDG == data.getChildrenCount())
+        {
+            for (int i=1; i<=5; i++)
+            {
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                    writeEmptyToSecondDataBase(i);
+                }
+            }
+        }
+    }
+    @RequiresApi(api = Build.VERSION_CODES.O)
+    public void writeEmptyToSecondDataBase(int k)
+    {
+        mDatenbank = FirebaseDatabase.getInstance().getReference().child("overviewdetection");
+        mDatenbank.child("IDG" + k).child("a_androidid").setValue("");
+        mDatenbank.child("IDG" + k).child("b_localdatetime").setValue("");
+        mDatenbank.child("IDG" + k).child("d_breitengrad").setValue("");
+        mDatenbank.child("IDG" + k).child("e_laengengrad").setValue("");
+        mDatenbank.child("IDG" + k).child("h_timestamp").setValue("");
+        mDatenbank.child("IDG" + k).child("i_amplitude").setValue("");
+
+        /*
+        k=1;
+        mDatenbank.child("IDG" + k).child("a_androidid").setValue(getandroidid());
+        mDatenbank.child("IDG" + k).child("b_localdatetime").setValue(LocalDateTime.now(ZoneOffset.UTC).toString());
+        mDatenbank.child("IDG" + k).child("d_breitengrad").setValue(123);
+        mDatenbank.child("IDG" + k).child("e_laengengrad").setValue(456);
+        mDatenbank.child("IDG" + k).child("h_timestamp").setValue(Calendar.getInstance().getTimeInMillis());
+        */
+    }
+
+    //###### Bei Vibration der APP ####
+    public void getDataBaseValuesNoListenerForVibration()
+    {
+        mDatenbank = FirebaseDatabase.getInstance().getReference().child("overviewdetection");
+        mDatenbank.get().addOnCompleteListener(new OnCompleteListener<DataSnapshot>() {
+            @Override
+            public void onComplete(@NonNull Task<DataSnapshot> task) {
+                if (!task.isSuccessful()) {
+                    System.out.println("Datenbank Fehler in getDataBaseValuesNoListener");
+                }
+                else {
+                    checkForEmptyIDG(task.getResult());
+                }
+            }
+        });
+    }
+    public void checkForEmptyIDG(DataSnapshot data)
+    {
+        for (int i=1; i<=data.getChildrenCount(); i++)
+        {
+            System.out.println("Schaue ob in DB IDG leer ist bei: " + i );
+            if(analyzeForEmptyIDG(data,i))
+            {
+                System.out.println("Schreibe in DB mit IDG " + i );
+                writeDeviceToDB(i);
+                break;
+            }
+        }
+    }
+    public boolean analyzeForEmptyIDG(DataSnapshot data, int i)
+    {
+        String androidid;
+        String localedatetime;
+        String breitengrad;
+        String laengengrad;
+        String timestamp;
+        String ampltiude;
+        androidid = data.child("IDG" + i).child("a_androidid").getValue().toString();
+        localedatetime = data.child("IDG" + i).child("b_localdatetime").getValue().toString();
+        breitengrad = data.child("IDG" + i).child("d_breitengrad").getValue().toString();
+        laengengrad = data.child("IDG" + i).child("e_laengengrad").getValue().toString();
+        timestamp = data.child("IDG" + i).child("h_timestamp").getValue().toString();
+        ampltiude = data.child("IDG" + i).child("i_amplitude").getValue().toString();
+
+        if(androidid.isEmpty() && localedatetime.isEmpty() && breitengrad.isEmpty() && laengengrad.isEmpty() && timestamp.isEmpty() && ampltiude.isEmpty())
+        {
+            return true;
+        }else
+        {
+            return false;
+        }
+    }
+    public void writeDeviceToDB (int k)
+    {
+        mDatenbank = FirebaseDatabase.getInstance().getReference().child("overviewdetection");
+
+        mDatenbank.child("IDG" + k).child("a_androidid").setValue(getandroidid());
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            mDatenbank.child("IDG" + k).child("b_localdatetime").setValue(LocalDateTime.now(ZoneOffset.UTC).toString());
+        }
+        mDatenbank.child("IDG" + k).child("d_breitengrad").setValue(currentLocation.getLatitude());
+        mDatenbank.child("IDG" + k).child("e_laengengrad").setValue(currentLocation.getLongitude());
+        mDatenbank.child("IDG" + k).child("h_timestamp").setValue(Calendar.getInstance().getTimeInMillis());
+        mDatenbank.child("IDG" + k).child("i_amplitude").setValue(1000);
+    }
+
+    //###### Bei Eintragungen in der DB ####
+    public void getDataBaseValuesWithListener()
+    {
+        mDatenbank = FirebaseDatabase.getInstance().getReference().child("overviewdetection");
+        mDatenbank.addValueEventListener(new ValueEventListener() {
+            @Override
+            public void onDataChange(@NonNull DataSnapshot snapshot) {
+                analyzeDBchanges(snapshot);
+            }
+            @Override
+            public void onCancelled(@NonNull DatabaseError error) {
+                getDataBaseFailure(error);
+            }
+        });
+    }
+
+    public void analyzeDBchanges(DataSnapshot data)
+    {
+        System.out.println("########################Höre auf Veränderungen....");
+        int takenIDG = 0;
+        for (int i=1; i<=data.getChildrenCount(); i++)
+        {
+            if(analyzeForFullIDG(data,i))
+            {
+                takenIDG++;
+            }
+        }
+        if(takenIDG>=1 && takenIDG <=5)
+        {
+            //Schreibt bei einer neuen vollen IDG ins Display
+            for(writtenDevices = writtenDevices; writtenDevices <= takenIDG; writtenDevices++)
+            {
+                setDisplayText(data,writtenDevices);
+            }
+        }
+        //TODO @Aron hier Jans Code anschließen
+        //Bei genau 3 Einträgen:
+        if(takenIDG >= 3 && allowCalculation)
+        {
+            Toast.makeText(MainActivity.this, "Es wurden 3 Geräteeinträge registriert!", Toast.LENGTH_SHORT).show();
+            allowCalculation = false;
+            System.out.println("Gebe an Berechnung raus");
+            //An Jans Code anknüpfen
+        }
+    }
+
+    public boolean analyzeForFullIDG(DataSnapshot data, int i)
+    {
+        String androidid = data.child("IDG" + i).child("a_androidid").getValue().toString();
+        String localedatetime = data.child("IDG" + i).child("b_localdatetime").getValue().toString();
+        String breitengrad = data.child("IDG" + i).child("d_breitengrad").getValue().toString();
+        String laengengrad = data.child("IDG" + i).child("e_laengengrad").getValue().toString();
+        String timestamp = data.child("IDG" + i).child("h_timestamp").getValue().toString();
+        String ampltiude = data.child("IDG" + i).child("i_amplitude").getValue().toString();
+
+        if(!androidid.isEmpty() && !localedatetime.isEmpty() && !breitengrad.isEmpty() && !laengengrad.isEmpty() && !timestamp.isEmpty() && !ampltiude.isEmpty())
+        {
+            return true;
+        }else
+        {
+            return false;
+        }
+    }
+
+    public void setDisplayText(DataSnapshot data, int i)
+    {
+        String androidid = data.child("IDG" + i).child("a_androidid").getValue().toString();
+        String localedatetime = data.child("IDG" + i).child("b_localdatetime").getValue().toString();
+        String breitengrad = data.child("IDG" + i).child("d_breitengrad").getValue().toString();
+        String laengengrad = data.child("IDG" + i).child("e_laengengrad").getValue().toString();
+        String timestamp = data.child("IDG" + i).child("h_timestamp").getValue().toString();
+        String ampltiude = data.child("IDG" + i).child("i_amplitude").getValue().toString();
+        TextView txtDevice1 = (TextView) findViewById(R.id.txtdevice1);
+        TextView txtDevice2 = (TextView) findViewById(R.id.txtdevice2);
+        TextView txtDevice3 = (TextView) findViewById(R.id.txtdevice3);
+        TextView txtDevice4 = (TextView) findViewById(R.id.txtdevice4);
+        switch (i){
+            case 1:
+                txtDevice1.setText("Device ID 1: "+ androidid + "\n" + "Latitude: "+breitengrad+"\n"+ "Longitude: "+ laengengrad +"\n" + "Time Stamp: "+ timestamp + "\n" + "LocalDateTime: " + localedatetime +"\n"+ "Amplitude: "+ ampltiude+"\n");
+                break;
+            case 2:
+                txtDevice2.setText("Device ID 2: "+ androidid + "\n" + "Latitude: "+breitengrad+"\n"+ "Longitude: "+ laengengrad +"\n" + "Time Stamp: "+ timestamp + "\n" + "LocalDateTime: " + localedatetime +"\n"+ "Amplitude: "+ ampltiude+"\n");
+                break;
+            case 3:
+                txtDevice3.setText("Device ID 3: "+ androidid + "\n" + "Latitude: "+breitengrad+"\n"+ "Longitude: "+ laengengrad +"\n" + "Time Stamp: "+ timestamp + "\n" + "LocalDateTime: " + localedatetime +"\n"+ "Amplitude: "+ ampltiude+"\n");
+                break;
+            case 4:
+                txtDevice4.setText("Device ID 4: "+ androidid + "\n" + "Latitude: "+breitengrad+"\n"+ "Longitude: "+ laengengrad +"\n" + "Time Stamp: "+ timestamp + "\n" + "LocalDateTime: " + localedatetime +"\n"+ "Amplitude: "+ ampltiude+"\n");
+                break;
+            default:
+                System.out.println("Default Case trifft zu");
+                break;
+        }
+    }
+
+    public String getandroidid ()
+    {
+        return Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID);
+    }
+
+    public void getDataBaseFailure (DatabaseError error)
+    {
+        System.out.println("Fehler");
+        Log.w("Datenbankfehler", error.toException());
+    }
+
     //##################################################################  ^^^^ DB Code ^^^^  ###################################################################################
     //##########################################################################################################################################################################
 
@@ -281,13 +535,31 @@ public class MainActivity extends AppCompatActivity {
                 startActivity(intent);
             }
         });
-        Button buttonReadyToDetect = (Button) findViewById(R.id.buttonReadyToDetect);
-        buttonReadyToDetect.setOnClickListener(new View.OnClickListener() {
+
+        Button btnResetDB = (Button) findViewById(R.id.btnResetDB);
+        btnResetDB.setOnClickListener(new View.OnClickListener() {
+            @RequiresApi(api = Build.VERSION_CODES.O)
+            @Override
+            public void onClick(View v) {
+                for (int i=1; i<=5; i++)
+                {
+                    writeEmptyToSecondDataBase(i);
+                }
+            }
+        });
+
+        Button btnReadyToDetect = (Button) findViewById(R.id.buttonReadyToDetect);
+        btnReadyToDetect.setOnClickListener(new View.OnClickListener() {
+            @RequiresApi(api = Build.VERSION_CODES.O)
             @Override
             public void onClick(View v) {
-                mShakeDetectionIsActive = true;
-                mShakeDetected = false;
-                buttonReadyToDetect.setEnabled(false);
+                for (int i=1; i<=5; i++)
+                {
+                    System.out.println("Ready to Detect");
+                    mShakeDetectionIsActive = true;
+                    mShakeDetected = false;
+                    btnReadyToDetect.setEnabled(false);
+                }
             }
         });
     }

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

@@ -9,7 +9,7 @@
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Device 1"
+        android:text="@string/device_1"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
@@ -20,7 +20,7 @@
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Device 2"
+        android:text="@string/device_2"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
@@ -32,7 +32,7 @@
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Device 3"
+        android:text="@string/device_3"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
@@ -44,7 +44,7 @@
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Device 4"
+        android:text="@string/device_4"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
@@ -60,7 +60,7 @@
         android:layout_alignParentBottom="true"
         android:layout_centerHorizontal="true"
         android:layout_marginBottom="0dp"
-        android:text="Show Earthquake Location" />
+        android:text="@string/show_earthquake_location" />
 
     <Button
         android:id="@+id/buttonReadyToDetect"
@@ -68,10 +68,26 @@
         android:layout_height="wrap_content"
         android:layout_above="@id/btnEarthquakeLocation"
         android:layout_alignParentStart="false"
-        android:layout_alignParentLeft="false"
         android:layout_alignParentEnd="false"
         android:layout_alignParentBottom="false"
         android:layout_centerInParent="true"
-        android:text="Sensor Ready To Detect" />
+        android:text="@string/sensor_ready_to_detect" />
+
+    <Button
+        android:id="@+id/btnResetDB"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerHorizontal="true"
+        android:layout_above="@id/buttonReadyToDetect"
+        android:layout_alignParentStart="false"
+        android:layout_alignParentEnd="false"
+        android:layout_alignParentBottom="false"
+        android:layout_centerInParent="true"
+        android:textColor="@color/black"
+        android:text="@string/db_zur_cksetzen" />
+
+
+
+
 
 </RelativeLayout>

app/src/main/res/values/strings.xml

@@ -1,4 +1,12 @@
 <resources>
     <string name="app_name">Detection</string>
     <string name="title_activity_earthquake_location">Map</string>
+    <string name="testbutton">Testbutton</string>
+    <string name="sensor_ready_to_detect">Sensor Ready To Detect</string>
+    <string name="show_earthquake_location">Show Earthquake Location</string>
+    <string name="device_4">Device 4</string>
+    <string name="device_3">Device 3</string>
+    <string name="device_2">Device 2</string>
+    <string name="device_1">Device 1</string>
+    <string name="db_zur_cksetzen">DB zurücksetzen</string>
 </resources>

build.gradle

@@ -6,6 +6,8 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:4.2.1'
+        classpath 'com.google.gms:google-services:4.3.8'
+
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files