CARTO Android Test

We have developed an Android app showing traffic cameras from a specific dataset. The app positions the traffic cameras on a map according to their latitude and longitude.

The traffic cameras are in Sydney and you are probably not there but don't worry, we have mocked the GPS location for you so we can pretend you are :)

The app is working perfectly but the code smells. There are no design patterns, architecture, good practices, SOLID principles, etc. Please, we need your help. Do you want to accept the challenge?

Hereafter, we will refer to the traffic cameras as Points of Interest (POIs).

Before starting the test, please visit our open positions and fill in the form. If there are no open positions but you still would like to apply, please send an email to [email protected], she'll get back to you asap.

We'd like you to send us your app in the next 15 days. If you have any question about the test, please don't hesitate to contact us ([email protected]).

Screenshots

Home & POI search

• Home Screen: Show the traffic cameras and the blue dot with your GPS location (if it's enabled).
• POI Search Screen: Show the traffic cameras list. Filters by title and description are not implemented. It would be great if you develop this feature.

POI Detail & POI PreRoute & POI Route (without GPS Location)

This is how the app should behave when you choose a traffic camera (by clicking on a marker on the map or by using the search bar) and your GPS location is disabled:

• POI Detail Screen: Show the traffic camera details. If you click on "DIRECTIONS", the next screen will be the POI PreRoute screen, described below.
• POI PreRoute Screen: Choose another traffic camera by clicking on a marker.
• POI Route Screen: Draw the route between the selected traffic cameras, including the distance and time of the route. If you choose another traffic camera, it will be set as the origin of the route. The "START" button should be disabled.

POI Detail & POI Route & POI Navigation (with GPS Location)

This is how the app should behave when you choose a traffic camera (by clicking on a marker on the map or by using the search bar) and your GPS location is enabled.

• POI Route Screen: Draw the route between your location and the selected traffic camera, including the distance and time of the route. If you click the "START" button, the next screen will be POI Navigation Screen, described below.
• POI Navigation: Show a panel with the text "YOU ARE NAVIGATING" and another one with the button "FINISH". If you click on this button, you will return to the previous screen.

Considerations

• You are free to change the specific map library to work with. If you use Google Maps, you can use our apikey included in the project.
• You are free to modify the UI and the flow between screens.
• The dataset is accessible through a GET over https://javieraragon.carto.com/api/v2/sql?q=SELECT id, direction, href as image, region, title, view as description, ST_X(the_geom) as longitude, ST_Y(the_geom) as latitude FROM ios_test. The query param q is used to pass a SQL query to extract the data from the dataset. Under the hood, it will query a Postgres + PostGIS which enables multiple ways to get info using SQL and special spatial functions.
• If for whatever reason you are not able to complete the test, don't worry, we'll review it anyway.

We will pay special attention to...

• Clean Code and scalable architecture.
• Design pattern to handle the views states.
• Good practices, SOLID principles, etc.
• Creativity of the solution.
• Performance!
• Any extra details in terms of functionality, UI/UX or performance. Think of this task as an opportunity to showcase all of your technical skills.
• Documentation (use the README for this), explaining your solution and your technical decisions. If you decide to leave out certain things, tell us why.

You will get bonus points if...

The following features are not mandatory, but will definitely give you bonus points!

• The app also works offline.
• You use our mobile sdk. If you end up working at CARTO, you will work with it a lot.
• The app is written as production code.
• You include unit and functional tests.
• Animations. For example, you could use BottomSheetDialogFragment to show information on the map.
• The app works in landscape mode but without changing the design (we know it's a lot of work).
• IMPORTANT: You can substitute any of the points mentioned in the bonus section with your personal code repositories. For example, if you already have a repository where you demonstrate how to work with an offline app, simply include the URL and let us know where to find the relevant bits.

Ok, you've built the app, what should you do now?

Invite @jaimegc to the repo of your app. Please add a link to the APK in the README to help us with the installation.