Twitter is an Android app that allows a user to view their Twitter timeline and post a new tweet. The app utilizes Twitter REST API.
Time spent: 22 hours spent in total
Here's a walkthrough of implemented user stories:
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The following required functionality is completed:
- User can sign in to Twitter using OAuth login
- User can view tweets from their home timeline
- User is displayed the username, name, and body for each tweet
- User is displayed the relative timestamp for each tweet "8m", "7h"
- User can compose and post a new tweet
- User can click a “Compose” icon in the Action Bar on the top right
- User can then enter a new tweet and post this to Twitter
- User is taken back to home timeline with new tweet visible in timeline
- Newly created tweet should be manually inserted into the timeline and not rely on a full refresh
- User can see a counter with total number of characters left for tweet on compose tweet page
- User can pull down to refresh tweets timeline
- User can see embedded image media within a tweet on list and detail view.
The following optional features are implemented:
- User is using "Twitter branded" colors and styles
- User sees an indeterminate progress indicator when any background or network task is happening
- User can select "reply" from home timeline to respond to a tweet
- User that wrote the original tweet is automatically "@" replied in compose
- User can tap a tweet to open a detailed tweet view
- User can take favorite (and unfavorite) or retweet actions on a tweet
- User can view more tweets as they scroll with infinite pagination
- Compose tweet functionality is built using modal overlay
- User can click a link within a tweet body on tweet details view. The click will launch the web browser with relevant page opened.
- Replace all icon drawables and other static image assets with vector drawables where appropriate.
- User can view following / followers list through any profile they view.
- Use the View Binding library to reduce view boilerplate.
- On the Twitter timeline, apply scrolling effects such as hiding/showing the toolbar by implementing CoordinatorLayout.
- User can open the twitter app offline and see last loaded tweets. Persisted in SQLite tweets are refreshed on every application launch. While "live data" is displayed when app can get it from Twitter API, it is also saved for use in offline mode.
The following additional features are implemented:
- Retweets are displayed as the original tweet with a retweet note, like in the Twitter app
- A user's profile information and timeline are displayed on a user detail view
- User can view uncropped version of an image by tapping on it, like in the Twitter app
- User can tap on the profile button in the menu bar to see their own profile and tweets
Describe any challenges encountered while building the app.
- I ran into a timing issue when implementing the network progress indicator where the timeline would start being populated before the progress indicator was defined. To fix this, I moved the call to the Twitter API inside createOptionsMenu(), after the progress indicator was defined, to ensure that the progress bar would appear while the tweets were loading.
- To better differentiate between original tweets and retweets, I created a subclass of Tweet called Retweet. It was challenging to correctly deal with both situations and make them appear correctly on the UI, especially since the Twitter API sometimes only returned information about the original tweet (and not the retweeted version).
- Android Async HTTP - Simple asynchronous HTTP requests with JSON parsing
- Glide - Image loading and caching library for Android
Copyright 2021 Nadin Tamer
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