Implementación de Location Tracker con Inyección de Dependencias

The integration of the location component(LocationTracker) is essential when developing quality Android applications. Correctly implementing dependency injection for this component facilitates cleaner and better structured code, clearly separating responsibilities between the domain, data and presentation layers.

How to perform dependency injection for LocationTracker?

To incorporate LocationTracker into the application, dependency injection must be configured in theDataModule. This procedure maintains the independence between layers, making sure that the domain layer is free of any reference to specific technologies or libraries.

Below we show how to correctly insert the dependency using the Provide method:

@Providefun provideLocationTracker(    locationObserver: LocationObserver,    applicationScope: CoroutineScope): LocationTracker  {    return LocationTracker(locationObserver, applicationScope)}

This simple method ensures proper separation between project layers, keeping the domain layer clean and avoiding unnecessary references to specific injection mechanisms.

How to test data broadcasting in LocationTracker?

After having properly configured the dependency injection, the next step is to verify the behavior of the LocationTracker in action, emitting data in a controlled environment.

In the MainActivity, which functions as the central testing point, coroutines are used to manage the subscription to the locationdata (locationData) stream. Here, we use the onEach() operator to observe the broadcasts generated by this component:

locationTracker.locationData    .onEach  {        Log.d("locationData", it.toString())     }    .launchIn(lifecycleScope)

To activate and deactivate the emissions in a controlled way, we use the component's own methods:

• locationTracker.startObserving() to start the observation.
• Set possible intervals with setTrackingIsTrue to enable explicit tracking.
• locationTracker.stopObserving() to end the observation.

This handling ensures the correct broadcasting and stopping of data depending on the state and conditions of the user.

How to validate continuous broadcasts with simulated locations?

During the testing period, especially using an emulator, it is essential to correctly simulate the periodic change of location to verify that the desired emissions are actually being generated.

The following steps are recommended:

• Use IDE tools to simulate the constant emission of positions.
• Configure a suitable interval of location generation (example: emission of changes every second).

With this preparation, you will be able to clearly verify in the log that the emissions are flowing as expected, highlighting clear and consistent regular intervals.

Are you interested in implementing this feature in your app? Let us know in the comments how you plan to use it.