Build an Instagram-like app for posting images with comments.

The app comprises three view controllers: a feed, an upload page and a login page. The designs to follow will illustrate and specify the design and relationship of these view controllers. The backend will be powered by Firebase.

Users are required to log in before they can access the rest of the app.

Each post in the feed has two elements: a picture and a comment. The picture is a fixed square the width of the device and the text is variable height below it, resulting in non-uniform cell heights. Therefore use Auto Layout to drive automatic cell heights.


Use Email/Password authentication to you can register and log users in.

The simple schema is illustrated by this diagram. This will probably make the most sense for your app.

The file structure of the storage is illustrated here:

Note the relationship between image names and objects in the database. You can use the same UID for both.

Be sure to render your images into compressed JPEG format as we did in the review. Here's a line of code that takes a UIImage and generates a Data object with JPEG data.

let image: UIImage = ...obtain uiimage somehow...
let data = UIImageJPEGRepresentation(image, 0.5)

A total of 40 points

Login Success	Login Failure

Main Feed Extended	Main Feed Extended Scaling

Showing Roll: Beginning Modal	Showing Roll: Mid Model	Showing Roll: Finished Modal, Album View

Uploads Selected	Uploads Success

Main Feed - After Upload	Uploads Failure