Preparations to ask for location permissions.

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
     }
 }
 
@@ -50,9 +50,4 @@ dependencies {
 
     // 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/java/com/proculite/logmylocation/LocationDao.java

@@ -2,15 +2,9 @@ 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/LocationLoggingService.java

@@ -65,10 +65,6 @@ public class LocationLoggingService extends Service implements LocationListener
         return super.onStartCommand(intent, flags, startId);
     }
 
-    public List<LocationEntity> allLocations(){
-        return locationDao.getAll();
-    }
-
     @SuppressLint("MissingPermission")
     public void subscribeToLocationUpdates(LocationListener locationListener)
     {

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

@@ -3,8 +3,6 @@ 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;
 
@@ -19,8 +17,4 @@ public class LocationLoggingServiceBinder extends Binder {
     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

@@ -1,47 +1,35 @@
 package com.proculite.logmylocation;
 
+import android.Manifest;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.ServiceConnection;
+import android.content.pm.PackageManager;
 import android.location.Location;
 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;
+import androidx.activity.result.ActivityResultLauncher;
+import androidx.activity.result.contract.ActivityResultContracts;
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.content.ContextCompat;
 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);
 
@@ -52,8 +40,6 @@ 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
@@ -88,89 +74,6 @@ public class MainActivity extends AppCompatActivity implements LocationListener,
 
         LocationLoggingServiceBinder binder = (LocationLoggingServiceBinder) iBinder;
         binder.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
@@ -189,4 +92,25 @@ public class MainActivity extends AppCompatActivity implements LocationListener,
         Log.d(TAG, "Service null binding.");
         ServiceConnection.super.onNullBinding(name);
     }
+
+    private void ensureLocationPermission()
+    {
+        int fineLocationPermission = ContextCompat
+                .checkSelfPermission(this,Manifest.permission.ACCESS_FINE_LOCATION);
+        boolean fineLocationGranted = fineLocationPermission == PackageManager.PERMISSION_GRANTED;
+
+        if(!fineLocationGranted)
+        {
+            ActivityResultLauncher<String[]> permissionsLauncher = registerForActivityResult(
+                    new ActivityResultContracts.RequestMultiplePermissions(), isGranted -> {});
+            permissionsLauncher.launch(new String[]{
+                    Manifest.permission.ACCESS_FINE_LOCATION,
+                    Manifest.permission.ACCESS_BACKGROUND_LOCATION
+            });
+        }
+        else
+        {
+            Log.d(TAG, "Permissions already granted.");
+        }
+    }
 }

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>