Added android room as dependency.

app/build.gradle.kts

@@ -40,4 +40,14 @@ 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")
 }

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

@@ -1,9 +1,10 @@
 package com.proculite.logmylocation;
 
+import android.location.LocationListener;
 import android.os.Binder;
 
 public class LocationLoggingServiceBinder extends Binder {
-    public final LocationLoggingService service;
+    private final LocationLoggingService service;
 
     public LocationLoggingServiceBinder(LocationLoggingService service){
         this.service = service;
@@ -12,4 +13,8 @@ public class LocationLoggingServiceBinder extends Binder {
     public LocationLoggingService getService(){
         return this.service;
     }
+
+    public void subscribeToLocationUpdates(LocationListener locationListener){
+        this.service.subscribeToLocationUpdates(locationListener);
+    }
 }

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

@@ -68,7 +68,7 @@ public class MainActivity extends AppCompatActivity implements LocationListener,
         Log.d(TAG, "Service connected.");
 
         LocationLoggingServiceBinder binder = (LocationLoggingServiceBinder) iBinder;
-        binder.getService().subscribeToLocationUpdates(this);
+        binder.subscribeToLocationUpdates(this);
     }
 
     @Override