Cleanup: TrackRecordingServiceConnection has now an execute method (avoid instantiation).

src/main/java/de/dennisguse/opentracks/TrackListActivity.java

@@ -159,11 +159,7 @@ public class TrackListActivity extends AbstractTrackDeleteActivity implements Co
                 if (gpsStatusValue.isGpsStarted()) {
                     recordingStatusConnection.stopService(this);
                 } else {
-                    new TrackRecordingServiceConnection((service, connection) -> {
+                    TrackRecordingServiceConnection.execute(this, (service, connection) -> service.tryStartSensors());
-                        service.tryStartSensors();
-
-                        connection.unbind(this);
-                    }).startAndBindWithCallback(this);
                 }
             }
         });
@@ -182,15 +178,13 @@ public class TrackListActivity extends AbstractTrackDeleteActivity implements Co
             // Not Recording -> Recording
             Log.i(TAG, "Starting recording");
             updateGpsMenuItem(false, true);
-            new TrackRecordingServiceConnection((service, connection) -> {
+            TrackRecordingServiceConnection.execute(this, (service, connection) -> {
                 Track.Id trackId = service.startNewTrack();
 
                 Intent newIntent = IntentUtils.newIntent(TrackListActivity.this, TrackRecordingActivity.class);
                 newIntent.putExtra(TrackRecordingActivity.EXTRA_TRACK_ID, trackId);
                 startActivity(newIntent);
-
+            });
-                connection.unbind(this);
-            }).startAndBind(this);
         });
         viewBinding.trackListFabAction.setOnLongClickListener((view) -> {
             if (!recordingStatus.isRecording()) {

src/main/java/de/dennisguse/opentracks/TrackRecordedActivity.java

@@ -201,7 +201,7 @@ public class TrackRecordedActivity extends AbstractTrackDeleteActivity implement
         }
 
         if (item.getItemId() == R.id.track_detail_resume_track) {
-            new TrackRecordingServiceConnection((service, connection) -> {
+            TrackRecordingServiceConnection.execute(this, (service, connection) -> {
                 service.resumeTrack(trackId);
 
                 Intent newIntent = IntentUtils.newIntent(TrackRecordedActivity.this, TrackRecordingActivity.class)
@@ -209,9 +209,8 @@ public class TrackRecordedActivity extends AbstractTrackDeleteActivity implement
                 startActivity(newIntent);
                 overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
 
-                connection.unbind(this);
                 finish();
-            }).startAndBind(this);
+            });
             return true;
         }
 

src/main/java/de/dennisguse/opentracks/TrackRecordingActivity.java

@@ -224,7 +224,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
             trackDataHub.setRecordingStatus(recordingStatus);
         }
 
-        trackRecordingServiceConnection.startAndBindWithCallback(this);
+        trackRecordingServiceConnection.bind(this);
     }
 
     @Override

src/main/java/de/dennisguse/opentracks/TrackStoppedActivity.java

@@ -136,7 +136,7 @@ public class TrackStoppedActivity extends AbstractTrackDeleteActivity implements
     }
 
     private void resumeTrackAndFinish() {
-        new TrackRecordingServiceConnection((service, connection) -> {
+        TrackRecordingServiceConnection.execute(this, (service, connection) -> {
             service.resumeTrack(trackId);
 
             Intent newIntent = IntentUtils.newIntent(TrackStoppedActivity.this, TrackRecordingActivity.class)
@@ -144,9 +144,8 @@ public class TrackStoppedActivity extends AbstractTrackDeleteActivity implements
             startActivity(newIntent);
             overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
 
-            connection.unbind(this);
             finish();
-        }).startAndBind(this);
+        });
     }
 
     @Override

src/main/java/de/dennisguse/opentracks/publicapi/AbstractAPIActivity.java

@@ -37,8 +37,7 @@ public abstract class AbstractAPIActivity extends AppCompatActivity {
 
         if (PreferencesUtils.isPublicAPIenabled()) {
             Log.i(TAG, "Received and trying to execute requested action.");
-            new TrackRecordingServiceConnection(serviceConnectedCallback)
+            TrackRecordingServiceConnection.execute(this, serviceConnectedCallback);
-                    .startAndBind(this);
         } else {
             Toast.makeText(this, getString(R.string.settings_public_api_disabled_toast), Toast.LENGTH_LONG).show();
             Log.w(TAG, "Public API is disabled; ignoring request.");

src/main/java/de/dennisguse/opentracks/services/TrackRecordingServiceConnection.java

@@ -80,7 +80,7 @@ public class TrackRecordingServiceConnection {
 
     public void bind(@NonNull Context context) {
         if (trackRecordingService != null) {
-            // Service is already started and bound.
+            callback.onConnected(trackRecordingService, this);
             return;
         }
 
@@ -89,32 +89,6 @@ public class TrackRecordingServiceConnection {
         context.bindService(new Intent(context, TrackRecordingService.class), serviceConnection, flags);
     }
 
-    public void startAndBind(Context context) {
-        if (trackRecordingService != null) {
-            // Service is already started and bound.
-            return;
-        }
-
-        ContextCompat.startForegroundService(context, new Intent(context, TrackRecordingService.class));
-
-        bind(context);
-    }
-
-    //TODO There should be a better way to implement this.
-
-    /**
-     * Triggers the onConnected() callback even if already connected.
-     */
-    //TODO Check if this is actually needed as it is used to re-connect from Activities in onResume by using a LiveData; might be obsolete. If not, there should be a better way to implement this.
-    @Deprecated
-    public void startAndBindWithCallback(Context context) {
-        if (trackRecordingService == null) {
-            startAndBind(context);
-            return;
-        }
-        callback.onConnected(trackRecordingService, this);
-    }
-
     /**
      * Unbinds the service (but leave it running).
      */
@@ -178,4 +152,15 @@ public class TrackRecordingServiceConnection {
     public interface Callback {
         void onConnected(TrackRecordingService service, TrackRecordingServiceConnection self);
     }
+
+    public static void execute(Context context, Callback callback) {
+        Callback withUnbind = (service, connection) -> {
+            callback.onConnected(service, connection);
+            connection.unbind(context);
+        };
+        new TrackRecordingServiceConnection(withUnbind)
+                .bind(context);
+
+        ContextCompat.startForegroundService(context, new Intent(context, TrackRecordingService.class));
+    }
 }