This document summarizes key concepts for iOS app development including design patterns like MVVM, communication patterns, databases like CoreData, networking using REST APIs and libraries like AFNetworking, memory management with ARC, and an introduction to the Swift programming language. Useful resources for iOS development are also provided.

1. iOS App Development
Presented By:
Samesh Swongamikha & Neetin Sharma

2. Design Patterns
• Loosely based on mvc
• Massive view controller

3. MVVM Pattern
• Model – View –ViewModel

4. The communication pattern
• Direct
• Notification
• Delegates
• The Reactive way

5. Database
• Anything that floats
• CoreData
• Light weight
• NSObjectContext
• Class Interface

6. Database optimization
• Normalization
• No images
• Extensions

7. Schema-less DB
• Why go schema-less ?
• Parse

8. Networking
• Why do we need web server’s data in iOS?
• What kind of data we can get from server?
• JSON or XML or something else?
• What kind of server API we need?
• RESTful API , any other?

9. Networking continued
• Do we need our own server?
• use BAAS, for e.g. Parse

10. Networking continued
• API for server request
• NSURLConnection
• NSURLSession (iOS 7 on wards)
• AFNetworking (third party)
• Alamofire (written in swift)

11. Networking continued
• Use asynchronous server request (do not block main thread).
• Use background thread for downloads and uploads.
• Don’t store large size image in disk/database but curl when needed in the background using
background thread.
• Do not initiate heavy downloads on mobile data, check if device is using wifi.

12. Memory Management
• Retain/Release
• ARC
• Be careful (Outlets/ Popovers/ Timers)

13. Swift
• What is swift?
• What is new in swift?
• It is designed for type safety
• Tuples
• Generics
• Memory is managed automatically.
• Functional programming pattern. e.g. Filters.
• Functions are first class objects.

14. Useful tools/ links
• Cocoapods (http://cocoapods.org/)
• Ray Wenderlich Tutorials (http://www.raywenderlich.com/)
• Cocoa Controls ( https://www.cocoacontrols.com/)
• Realm : a mobile database (http://realm.io/)
• Reactive Cocoa (https://github.com/ReactiveCocoa/ReactiveCocoa)
• AFNetwoking (https://github.com/AFNetworking/AFNetworking)
• Masonry ()

15. Thank You