GalleryDemoApp

This app connects to Flicker API and displays a list of Photos based on its tag.

Quick Summary

• This app list out the different tags and respective photos as a gallery module.
• The list is displaying in a way that can be scrolled infinitely to load more photos.
• Photos are grouped using tags/category, each section is having the name of said tag/category.
• Each section/group contains one row, that is having a horizontal scrolling -infinite- set of items.
• Each item is having an image.
• When a photo is selected(cell) a new detail view is displayed that contain a larger photo.
• Photos returned by the api are cached locally using SDWebImage library.
• Users of this app can fetch photos by searching for any particular keyword.
• App use Auto Layout to support running in all iPhone screen sizing.
• App uses custom animation between the photo list and photo detail view.
• App support localisation for Hindi and English language.

Project Configuration

• Version - 1.0
• Deployment Target - 12.1
• Language - Swift

Project Architecture

We have used extended version of MVP for making project enterprise ready and ease to expand, test.

Component of the project

Architecture based components:

• Model Layer: Responsible for holding the related data for the specific task or purpose.
• View Layer: Represents the user interface for the application window.
• Presenter: Works as a medium for interacting with the external components of the application.
• Manager layer: Extra Layer for separating the network layer from the interface or view logic.
• API Request layer: Responsible for calling web api for fetching data from server.

Other Components:

• Service Manager: Global Single end point to interact with the web based api’s.
• Error Transformer: Responsible for constructing error and mapping with the user relevant message.
• Response Wrapper: Listener and navigator for transferring the data or error to the presenter layer.
• Base View Controller: Contains reusable methods to be used by UIViewController i.e. show/hide loader etc.

Application's Dependency

• AFNetworking for network layer.
• SDWebImage for image caching.
• ESPullToRefresh for infinite scrolling.
• SVProgressHUD for loader.

API(s) Description

• This app is using following Flicker's API:
• Category/Header listing: https://api.flickr.com/v2/tags/trending/2000?pageSize=
• Search result: https://api.flickr.com/services/rest/?method=flickr.photos.search&api_key=<api_key>&per_page=<per_page_limit>&format=json&nojsoncallback=1&text=&page=<current_page>

Who do I talk to?

• Repo owner or admin
• Other community or team contact