Portfolio

Hi, I am Oskar!
This repo holds Flutter applications developed by me during the course of learning & discovering flutter development.

rock_paper_scissors

Android Studio (Flutter & Dart)

Specifications

• A simple single page app
• Image placeholder responds to taps
• The taps/clicks update the state of Stateful Widgets
• Keeps track of scores

What I learned?

• Difference between Stateless and Stateful widgets
• Use builder methods efficiently to minimize code length
• Use Dart functions and basic libraries such as dart:math

weatherMe

created an app to fetch and display weather data

Android Studio (Flutter & Dart)

Specifications

• App has multiple screen (splashScreen, weatherScreen, citySelectionScreen)
• App has two mode for weather data - location mode & city mode
• By default, weather for user's current location is fetched
• Users can search for specific city weather using citySelectionScreen
• Network and GPS location errors are handled properly
• API and GPS data calls are made in background thread
• Uses geolocator and geocoding for fetching user location
• Uses openweathermap api for weather data

What I learned?

• create custom widget with dynamic properties and reuse it to reduce repetition of code
• make use of constant.dart to store styling properties for clean code
• use asynchronous programming to download data over internet on background thread
• Integrate exception handling during downloads and parsing of data
• Integrate openweathermap API and learn about API architecture overall
• use Navigator & Routes to handle screen stack
• pass data from from one screen to another and back
• validate data from api before processing it further

myGroup

created an app for group chats

Android Studio (Flutter & Dart)

Specifications

• App has multiple screen (splashScreen, authenticationScreen, dashboardScreen, messageScreen)
• Users can register using email and password
• Users can create or join existing group chats
• FirebaseAuth is used for user authentication
• Firestore is used as the backend
• Implements MVC architecture
• Provider is used for state management
• Message updates on real-time
• Only the admin of the group can delete the chat
• Only authenticated users can read/write messages
• Alert dialog are used to warm users of errors
• App is scalable

What I learned?

• Use and manage widget states using provider package
• lifting the state up the widget tree
• work with implenting callbacks
• implement proper auth flow
• write Firestore rules
• make app scalable and moduler using MVC architecture
• efficient data modelling for Firestore
• go from hand drawn wireframe to full functioning application
• minimize code repetition by modulerizing widgets

myTimer

an app to track time

(Flutter, Dart & BLoC)

Specifications

• App has two modes: i) timer ii) stopwatch
• Uses BLoC state management under the hood
• Users can record lap timings
• Implements clean architecture with minimum inter dependencies
• App is scalable and functions are highly portable

What I learned?

• Familiarized with BLoc state management and design pattern
• Working of stream and subscription
• Abstracting states and events of a feature
• Working with Equatable for ease of comparing objects