! (Application created in Android Studio with Java as proof of concept.) !

This is a simple application for people that want to sell their stuff online.

From a technical standpoint, the things that I used to make this app:

- Collapsing Toolbar
- Tabs Setup
- Signing in a FirebaseUser
- Selecting an Image for Uploading
- Camera and Storage Permissions
- Sending Data from Dialog to Fragment
- Compressing Images in Android
- Uploading an Image to Firebase Storage
- Rotating Images on Android
- Saving Search Preferences
- Deploying ElasticSearch
- Creating an ElasticSearch Index with Postman
- Enabling Firebase Cloud Functions
- Querying an ElasticSearch Server
- Retrofit Setup in Android
- ElasticSearch Query Prep
- ElasticSearch Android Retrofit Query
- RecyclerView Grid
- Inflating a FrameLayout