app/build.gradle.kts

@@ -26,8 +26,8 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_17
+        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_1_8
     }
 }
 
@@ -40,19 +40,4 @@ dependencies {
     testImplementation(libs.junit)
     androidTestImplementation(libs.ext.junit)
     androidTestImplementation(libs.espresso.core)
-
-    val room_version = "2.6.1"
-
-    implementation("androidx.room:room-runtime:$room_version")
-    annotationProcessor("androidx.room:room-compiler:$room_version")
-    // optional - RxJava3 support for Room
-    implementation("androidx.room:room-rxjava3:$room_version")
-
-    // optional - Guava support for Room, including Optional and ListenableFuture
-    implementation("androidx.room:room-guava:$room_version")
-
-    implementation("io.jenetics:jpx:3.1.0")
-    // https://mvnrepository.com/artifact/org.codehaus.woodstox/woodstox-core-asl
-    implementation("org.codehaus.woodstox:woodstox-core-asl:4.4.1")
-
 }

app/src/main/AndroidManifest.xml

@@ -5,10 +5,6 @@
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
-    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
-    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
-    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_LOCATION"/>
-
 
     <application
         android:allowBackup="true"
@@ -23,9 +19,7 @@
         <service
             android:name=".LocationLoggingService"
             android:enabled="true"
-            android:exported="true"
+            android:exported="true"></service>
-            android:foregroundServiceType="location"
-            />
 
         <activity
             android:name=".MainActivity"

app/src/main/java/com/proculite/logmylocation/LocationDao.java

@@ -1,16 +0,0 @@
-package com.proculite.logmylocation;
-
-import androidx.room.Dao;
-import androidx.room.Insert;
-import androidx.room.Query;
-
-import java.util.List;
-
-@Dao
-public interface LocationDao {
-    @Insert
-    void insert(LocationEntity location);
-
-    @Query("SELECT * FROM locationentity")
-    List<LocationEntity> getAll();
-}

app/src/main/java/com/proculite/logmylocation/LocationDatabase.java

@@ -1,9 +0,0 @@
-package com.proculite.logmylocation;
-
-import androidx.room.Database;
-import androidx.room.RoomDatabase;
-
-@Database(entities = {LocationEntity.class}, version = 3)
-public abstract class LocationDatabase extends RoomDatabase {
-    public abstract LocationDao locationDao();
-}

app/src/main/java/com/proculite/logmylocation/LocationEntity.java

@@ -1,53 +0,0 @@
-package com.proculite.logmylocation;
-
-import androidx.room.ColumnInfo;
-import androidx.room.Entity;
-import androidx.room.PrimaryKey;
-
-@Entity
-public class LocationEntity {
-    @PrimaryKey(autoGenerate = true)
-    public long id;
-
-    @ColumnInfo(name = "accuracy")
-    public Float accuracy;
-
-    @ColumnInfo(name = "altitude")
-    public Double altitude;
-
-    @ColumnInfo(name = "altitude_accuracy")
-    public Float altitudeAccuracy;
-
-    @ColumnInfo(name = "msl_altitude")
-    public Double mslAltitude;
-
-    @ColumnInfo(name = "msl_altitude_accuracy")
-    public Float mslAltitudeAccuracy;
-
-    @ColumnInfo(name = "bearing")
-    public Float bearing;
-
-    @ColumnInfo(name = "bearing_accuracy")
-    public Float bearingAccuracy;
-
-    @ColumnInfo(name = "latitude")
-    public double latitude;
-
-    @ColumnInfo(name = "longitude")
-    public double longitude;
-
-    @ColumnInfo(name = "speed")
-    public Float speed;
-
-    @ColumnInfo(name = "speed_accuracy")
-    public Float speedAccuracy;
-
-    @ColumnInfo(name = "unix_time")
-    public long unixTime;
-
-    @ColumnInfo(name = "elapsed_realtime_age")
-    public Long elapsedRealtimeAge;
-
-    @ColumnInfo(name = "is_mock")
-    public Boolean isMock;
-}

app/src/main/java/com/proculite/logmylocation/LocationLoggingService.java

@@ -1,30 +1,22 @@
 package com.proculite.logmylocation;
 
 import android.annotation.SuppressLint;
-import android.app.NotificationChannel;
-import android.app.NotificationManager;
 import android.app.Service;
 import android.content.Intent;
-import android.content.pm.ServiceInfo;
 import android.location.Location;
 import android.location.LocationListener;
 import android.location.LocationManager;
 import android.location.LocationProvider;
-import android.os.Build;
 import android.os.IBinder;
 import android.util.Log;
 
 import androidx.annotation.NonNull;
-import androidx.core.app.NotificationCompat;
-import androidx.core.app.ServiceCompat;
 import androidx.core.location.LocationManagerCompat;
-import androidx.room.Room;
 
 import java.util.List;
 
 public class LocationLoggingService extends Service implements LocationListener {
     private final String TAG = LocationLoggingService.class.getName();
-    private LocationDao locationDao;
 
     public LocationLoggingService() {
     }
@@ -38,37 +30,11 @@ public class LocationLoggingService extends Service implements LocationListener
     public int onStartCommand(Intent intent, int flags, int startId) {
         Log.d(TAG, "Service started.");
 
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-            NotificationChannel notificationChannel = new NotificationChannel(
-                    "Foreground",
-                    "Foreground",
-                    NotificationManager.IMPORTANCE_DEFAULT
-            );
-            NotificationManager notificationManager = getSystemService(NotificationManager.class);
-            notificationManager.createNotificationChannel(notificationChannel);
-            NotificationCompat.Builder builder = new NotificationCompat.Builder(this, notificationChannel.getId());
-            builder.setSmallIcon(R.drawable.ic_launcher_foreground);
-            builder.setContentText("Started service in foreground.");
-
-            ServiceCompat.startForeground(this,3784583, builder.build(), ServiceInfo.FOREGROUND_SERVICE_TYPE_LOCATION);
-        }
-
-        LocationDatabase database = Room
-                .databaseBuilder(getApplicationContext(), LocationDatabase.class, "location")
-                .fallbackToDestructiveMigration()
-                .build();
-
-        locationDao = database.locationDao();
-
         subscribeToLocationUpdates(this);
 
         return super.onStartCommand(intent, flags, startId);
     }
 
-    public List<LocationEntity> allLocations(){
-        return locationDao.getAll();
-    }
-
     @SuppressLint("MissingPermission")
     public void subscribeToLocationUpdates(LocationListener locationListener)
     {
@@ -90,82 +56,12 @@ public class LocationLoggingService extends Service implements LocationListener
 
     @Override
     public void onLocationChanged(@NonNull Location location) {
-        new Thread(()->{
         Log.d(TAG, String.format(
                 "New location. Latitude: %s Longitude: %s Altitude: %s",
                 location.getLatitude(),
                 location.getLongitude(),
                 location.getAltitude())
         );
-
-            if(locationDao == null)
-            {
-                Log.w(TAG, "Location DAO is null, could not write new location.");
-                return;
-            }
-
-            LocationEntity locationEntity = new LocationEntity();
-
-            locationEntity.latitude = location.getLatitude();
-            locationEntity.longitude = location.getLongitude();
-            locationEntity.unixTime = location.getTime();
-
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
-                locationEntity.isMock = location.isMock();
-            }
-
-            if(location.hasAccuracy())
-            {
-                locationEntity.accuracy = location.getAccuracy();
-            }
-
-            if(location.hasAltitude())
-            {
-                locationEntity.altitude = location.getAltitude();
-            }
-
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
-                locationEntity.elapsedRealtimeAge = location.getElapsedRealtimeAgeMillis();
-            }
-
-            if(location.hasBearing())
-            {
-                locationEntity.bearing = location.getBearing();
-                if(location.hasBearingAccuracy())
-                {
-                    locationEntity.bearingAccuracy = location.getBearingAccuracyDegrees();
-                }
-            }
-
-            if(location.hasSpeed())
-            {
-                locationEntity.speed = location.getSpeed();
-            }
-
-            if(location.hasSpeedAccuracy())
-            {
-                locationEntity.speedAccuracy = location.getSpeedAccuracyMetersPerSecond();
-            }
-
-            if(location.hasVerticalAccuracy())
-            {
-                locationEntity.altitudeAccuracy = location.getVerticalAccuracyMeters();
-            }
-
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
-                if(location.hasMslAltitude())
-                {
-                    locationEntity.mslAltitude = location.getMslAltitudeMeters();
-                }
-
-                if(location.hasMslAltitudeAccuracy())
-                {
-                    locationEntity.mslAltitudeAccuracy = location.getMslAltitudeAccuracyMeters();
-                }
-            }
-
-            locationDao.insert(locationEntity);
-        }).start();
     }
 
     @Override

app/src/main/java/com/proculite/logmylocation/LocationLoggingServiceBinder.java

@@ -1,12 +1,9 @@
 package com.proculite.logmylocation;
 
-import android.location.LocationListener;
 import android.os.Binder;
 
-import java.util.List;
-
 public class LocationLoggingServiceBinder extends Binder {
-    private final LocationLoggingService service;
+    public final LocationLoggingService service;
 
     public LocationLoggingServiceBinder(LocationLoggingService service){
         this.service = service;
@@ -15,12 +12,4 @@ public class LocationLoggingServiceBinder extends Binder {
     public LocationLoggingService getService(){
         return this.service;
     }
-
-    public void subscribeToLocationUpdates(LocationListener locationListener){
-        this.service.subscribeToLocationUpdates(locationListener);
-    }
-
-    public List<LocationEntity> allLocations(){
-        return this.service.allLocations();
-    }
 }

app/src/main/java/com/proculite/logmylocation/MainActivity.java

@@ -9,7 +9,6 @@ import android.location.LocationListener;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.util.Log;
-import android.widget.Button;
 import android.widget.TextView;
 
 import androidx.activity.EdgeToEdge;
@@ -19,31 +18,15 @@ import androidx.core.graphics.Insets;
 import androidx.core.view.ViewCompat;
 import androidx.core.view.WindowInsetsCompat;
 
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.io.PipedInputStream;
-import java.io.PipedOutputStream;
-import java.io.Writer;
-
-import io.jenetics.jpx.GPX;
-import io.jenetics.jpx.WayPoint;
-
 public class MainActivity extends AppCompatActivity implements LocationListener, ServiceConnection {
     private final String TAG = MainActivity.class.getName();
-    private Button exportButton;
-    private WriteToFile writeToFile;
-    private static boolean includeComments = false;
-    private static Double accuracyThreshold = 2.0;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        writeToFile = new WriteToFile(this,"application/gpx");
-
         Intent serviceIntent = new Intent(this, LocationLoggingService.class);
-        startForegroundService(serviceIntent);
+        startService(serviceIntent);
 
         EdgeToEdge.enable(this);
         setContentView(R.layout.activity_main);
@@ -52,8 +35,6 @@ public class MainActivity extends AppCompatActivity implements LocationListener,
             v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
             return insets;
         });
-
-        exportButton = findViewById(R.id.buttonExport);
     }
 
     @Override
@@ -87,90 +68,7 @@ public class MainActivity extends AppCompatActivity implements LocationListener,
         Log.d(TAG, "Service connected.");
 
         LocationLoggingServiceBinder binder = (LocationLoggingServiceBinder) iBinder;
-        binder.subscribeToLocationUpdates(this);
+        binder.getService().subscribeToLocationUpdates(this);
-
-        if(exportButton != null){
-            exportButton.setOnClickListener(v -> {
-                Log.d(TAG, "Export button clicked.");
-                new Thread(() -> {
-                    GPX gpx = GPX.builder().addTrack(track -> track.addSegment(segment -> {
-                        for(LocationEntity location : binder.allLocations()){
-                            WayPoint wayPoint = locationToWayPoint(location);
-                            if(wayPoint != null) {
-                                segment.addPoint(wayPoint);
-                            }
-                        }
-                    })).build();
-                    Log.d(TAG, "Built GPX.");
-
-                    writeToFile.write("output.gpx", outputStream -> {
-                        try {
-                        GPX.Writer.of(GPX.Writer.Indent.SPACE4).write(gpx, outputStream);
-                        } catch (IOException e) {
-                            Log.e(TAG, "Failed to write.");
-                        }
-                    });
-                }).start();
-            });
-        }
-    }
-
-    private static WayPoint locationToWayPoint(LocationEntity location) {
-        if(accuracyThreshold != null)
-        {
-            if(location.accuracy == null) {
-                return null;
-            }
-
-            if(location.accuracy > accuracyThreshold) {
-                return null;
-            }
-        }
-
-        WayPoint.Builder builder = WayPoint.builder()
-                .lat(location.latitude)
-                .lon(location.longitude)
-                .time(location.unixTime);
-
-        if(location.speed != null){
-            builder.speed(location.speed);
-        }
-
-        if(location.bearing != null){
-            builder.course(location.bearing);
-        }
-
-        if(location.altitude != null){
-            builder.ele(location.altitude);
-        }
-
-        if(includeComments) {
-            StringBuilder commentBuilder = new StringBuilder();
-
-            if (location.isMock) {
-                commentBuilder.append("Location is mock.\n");
-            }
-
-            if (location.accuracy != null) {
-                commentBuilder.append(String.format("Accuracy is expected to be within %s meters.\n", location.accuracy));
-            }
-
-            if (location.altitudeAccuracy != null) {
-                commentBuilder.append(String.format("Altitude accuracy is expected to be within %s meters.\n", location.altitudeAccuracy));
-            }
-
-            if (location.bearingAccuracy != null) {
-                commentBuilder.append(String.format("Bearing accuracy is expected to be within %s degrees.\n", location.bearingAccuracy));
-            }
-
-            if (location.speedAccuracy != null) {
-                commentBuilder.append(String.format("Speed accuracy is expected to be within %s meters per second.\n", location.speedAccuracy));
-            }
-
-            builder.cmt(commentBuilder.toString());
-        }
-
-        return builder.build();
     }
 
     @Override

app/src/main/java/com/proculite/logmylocation/WriteToFile.java

@@ -1,58 +0,0 @@
-package com.proculite.logmylocation;
-
-import android.net.Uri;
-import android.os.ParcelFileDescriptor;
-import android.util.Log;
-
-import androidx.activity.result.ActivityResultCallback;
-import androidx.activity.result.ActivityResultLauncher;
-import androidx.activity.result.contract.ActivityResultContracts;
-import androidx.appcompat.app.AppCompatActivity;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.util.function.Consumer;
-
-public class WriteToFile implements ActivityResultCallback<Uri> {
-    private final String TAG = WriteToFile.class.getName();
-    private Consumer<OutputStream> fileConsumer;
-    private final AppCompatActivity activityCompat;
-    private final ActivityResultLauncher<String> launcher;
-
-    public WriteToFile(AppCompatActivity activity, String fileMimeType)
-    {
-        this.activityCompat = activity;
-        this.launcher = activity.registerForActivityResult(
-                new ActivityResultContracts.CreateDocument(fileMimeType), this);
-    }
-
-    @Override
-    public void onActivityResult(Uri o) {
-        if(o == null || o.getPath() == null)
-        {
-            Log.d(TAG, "Attempting to write to null path.");
-            return;
-        }
-
-        Log.d(TAG, String.format("Writing to file: %s", o.getPath()));
-
-        try {
-            try (ParcelFileDescriptor fileDescriptor = this.activityCompat.getContentResolver().openFileDescriptor(o, "w")) {
-                if (fileDescriptor == null) {
-                    Log.e(TAG, "Parcel file descriptor is null.");
-                    return;
-                }
-                try (FileOutputStream fileOutputStream = new FileOutputStream(fileDescriptor.getFileDescriptor())) {
-                    fileConsumer.accept(fileOutputStream);
-                }
-            }
-        }  catch (IOException e) {
-            Log.e(TAG, "Failed to write to file.");
-        }
-    }
-
-    public void write(String fileName, Consumer<OutputStream> fileConsumer){
-        this.fileConsumer = fileConsumer;
-        launcher.launch(fileName);
-    }
-}

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

@@ -18,13 +18,4 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
-    <Button
-        android:id="@+id/buttonExport"
-        app:layout_constraintTop_toBottomOf="@+id/textViewMain"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        android:text="Export"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content" />
-
 </androidx.constraintlayout.widget.ConstraintLayout>