Ios sdk architecture and IOSSDK Architecture

Ios sdk architecture and IOSSDK Architecture

Ios sdk Overview

Preface:

This article does not have much to do with architecture, but I have always felt that it is important to know what the SDK can provide for the overall architecture of IOS, and there will be fewer detours.

A few points of understanding

Official documentation on IOS

Https://developer.apple.com/devcenter/ios/index.action

Here we should mention that the Apple documentation is the root cause of a deep understanding of IOS development. Therefore, you must be able to understand the documentation. In addition, Apple recommends that you use the upper-layer libraries whenever possible. The upper-layer libraries provided by the SDK are more efficient. (After all, Cocoa has gone through so many years of history and has gone through countless tempering efforts. It is always correct to follow it)

This document is mainly from the official website.

Link

Https://developer.apple.com/library/ios/documentation/Miscellaneous/Conceptual/iPhoneOSTechOverview/Introduction/Introduction.html

Layer-based IOS system

Layered with a picture

The underlying layer of IOS is based on Unix systems, so many features of Unix systems are available in IOS.

Cocoa Touch Layer

App Extensions	HandOff
Document Picker	Air Drop
Text Kit	UIKit Dynamics
Multitasking	Auto Layout
Stroyboard	UI State Preservation
App Push Notification	Local Notification
Gesture Recongnizer	Standard System View Controller

  Cocoa Touch FrameWork 

Address Book UI FrameWork	EventKit UI FrameWork
GameKit FrameWork	IDaFrameWork
MapKit FrameWork	Message UI FrameWork
PushKit FrameWork	Twitter FrameWork
UIKit FrameWork

Media Layer

Graphics Technology

UIKit graphics (BeizerPath)	Core Graphics FrameWork
Core Animation	Core Image
OpenGL ES and GLKit	MEtal
Text Kit and Core Text	Image I/O
Photos Library

Audio Technology

Media Player Framework	AV Foundation
Open AL	Core Audio

Video Technology

UIImagePickerController	AVKit
AV Foundation	Core Media

Media Layer FrameWork

Assets Library Framework	AV Foundation Framework
AVKit Framewrok	Core Audio
Core Audio Framework	Core Graphics Framework
Core Image Framework	Core Text Framework
Core Video Framework	Game Controller Framework
GLKit Framework	Image I/O Framework
Media Accessibility Framework	Media Player Framework
Metal Framework	OpenAL Framework
OpenGL ES Framework	Photos Framework
Photos UI Framework	Quartz Core Framework
Scene Kit FrameWork

Core Servie Layer

ICloud Storage	Block Objects
Data Protection	File-Sharing Support
GCD	In App purchase
SQLite	XML Support

Core Service Framework

Accounts Framework	Address Book Framework
Ad support Framework	CFNetwork Framework
CloudKit Framework	Core Data Framework
Core Foundation Framwork	Core Location Framework
Core Media Framework	Core Motion Framework
Core Telephony Framework	EventKit Framework
Foundation Framework	HealthKit Framework
HomeKit Framework	JavaScript Core Framework
Mobile Core Service Framework	Multipeer Connectivity Framework
NewsstandKit Framework	PassKit Framework
Quick Look Framework	Safari Service Framework
Social Framework	StoreKit Framework
System Configuration Framework	WebKit Framework

Core OS Layer

Accelerate Framework	Core Bluetooth Framework
External Accessory Framework	Generic Security Service Framework
Local Authentication Framework	Network Extension Framework
Security Framework	System
65-Bit Support

To be continued...

I hope I can finish learning most of the IOS frameworks and complete related blogs.