alessiomason / mad-labs

Repository for the laboratories of the Mobile Application Development course

Mobile Application Development Labs

Repository for the laboratories of the Mobile Application Development course

The repository contains the 5 laboratories and the final project for the Mobile Application Development course (A.Y. 2022/23, Politecnico di Torino). Each folder contains the PDF of the assignment.

🌐 Qui in italiano

Lab 1: Kotlin Exercism exercises

4 exercises from the Exercism Kotlin track: Bank Account, Forth, List-Ops and Minesweeper.

Labs 2-5 and final project: Playgrounds Reservations

The following labs and the final project were aimed at creating an app for making reservations for available playgrounds to play a selection of sports.

The app is what can be considered a proof of concept: its main goal was to test and showcase all the different technologies that can be used to develop an Android application. For this very reason the app is a mix of activities and fragments, view-based screens and Jetpack Compose ones.

Optimizations were also not performed, mostly due to time constraints: most notably, the whole app operates from the main thread and frequently skips frames.

Features

• Explore the playgrounds availability, also without logging in
• Login or sign up with email and password or with a Google account
• Visualize already placed reservation through a calendar
• Make a new reservation, selecting a playground from recents or favourites ones or searching for one through filters
• Edit or delete an existing reservation
• Invite friends to a reservation, selecting from recents or favourites users or searching for one
• Receive in-app notifications for incoming invitations to reservations
• Withdraw participation from an accepted invitation to a reservation
• Personalize your profile with personal information to be displayed to friends and users of the app

Horizontal features

• The app supports multi-language localization and is fully translated in English and Italian
• The app supports both portrait and landscape orientations and the layout is sufficiently diversified for the two alternatives

Technologies used

• The app is fully developed in Kotlin
• View-based activities and fragment
• Jetpack Compose fragments (to integrate with the navigation graph used for fragments)
• Firebase Firestore database
• Firebase UI authentication
• Firebase storage for saving profile images
• Local Room database for labs 3 and 4

Known bugs and limitations

• The app supports a dark mode too, but the color scheme was not dutifully considered nor tested
• Accepting an invitation while the inviter disinvites you
• Two users making a reservation at the same time
• In general, concurrency has not been handled
• As previously mentioned, several performance optimizations would be needed

Screenshots

Calendar	Playgrounds availability	Add reservation
Choose playground	Show reservation	Notifications screen
Show profile

Folders content and brief changelog

• Lab 2

  • Show and edit personal profile

• Lab 3

  • Show personal reservations
  • Explore playgrounds availability
  • Add, edit and delete a reservation
  • Introduced local Room database

• Lab 4

  • Rate a previously reserved court

• Lab 5

  • See past ratings for a specific playground
  • Moved to Firebase Firestore database
  • Login (multi-user interactions properly managed)
  • Loading screens

• Final project

  • Invite friends to reservations
  • Manage received invites from notifications
  • Add friends and playgrounds to favourites
  • General bug fixing and management of corner cases

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We apologize if any of the technologies, plugins or components used required an acknowledgement and it was not provided: please note that the app was never meant to be public or operative.