Anyone Can Be a Programmer

Authored By:Priyanka SharmaMobile App DeveloperAmeba Technologies Pvt. Ltd.

http://amebasop.comhttp://ameba.tech

Let’s Explore

Today’s Menu■ Mobile Application■ What is iOS■ Features of iOS■ Jailbreaking■ What’s required for iOS app development.■ Xcode.■ Objective-C■ LifeCycle of Application■ Demo Application■ Queries

What is Mobile Application

Mobile Application, commonly referred as app, is type of application software designed for mobile device such as Smartphone or tablets.

What is iOS

■ iOS is a mobile operating system created and developed by Apple.

■ Derived from OS X .

■ Originally designed for the iPhone but now supports iPod touch, iPad, Apple TV and Apple Watch.

■ Founded by Steve Jobs.

Some interesting Facts

■ First ever iPhone was conceptualized in 1983.■ The iPhone was originally called ‘Purple’.■ As February, 2017 Apple's App Store

contained more than 2.2 million iOS applications.

■ Current iOS version is 10 which is compatible with iPhone 5, iPad3, iPad mini2 & iPod touch 6th gen or higher.

Jail-Breaking■ Has been prone to numerous hackings by

adding functions not supported by Apple■ It is the process of removing software

restrictions imposed by iOS, Apple operating system, on its devices including the iPhone, iPod touch, iPad,

■ The more the iOS has been updated, the fewer the jailbreaking incidences

What’s Required for iOS app development■ Mac : Hardware machine with running

latest version of OS X.

■ Xcode : IDE provided by apple.

■ Uses Objective-C

Objective-C

■ Object Oriented programming language. ■ Adds Smalltalk-style messaging to the C

programming language.■ Used by Apple for OS X and iOS operating

system

X-Code■It’s an integrated development

environment.■It contains :-

■ s/w development tools.■ built-in source code editor.■ graphic user interface.■ debugging tools■ simulator

■ Stable release 8.3 released in March 2017

Simulator

■ Simulator allows you to test your app during the development process.

■ Installed as Xcode tools■ It runs on Mac and

behaves like a standard Mac app while simulating the functionalities of iPhone , iPad etc.

View Controller■ UIViewControllers is specialized class for managing

views.

■ For each full-screen view in the app there is usually a view controller class.

■ Two types of view controllers:– Content view controllers :- manage a discrete piece of your

app’s content.Container view controllers :-  collect information from other view controllers (known as child view controllers) and present it in a way that navigate or presents the content of those view controllers differently.

View Controller Lifecycle

Designing Pattern : MVC

■ It is a software design pattern.■ Refers to three roles; the model, the view and the

controller.

Designing Pattern : Delegate■ As name suggest delegation is when one object in

a program acts on behalf of other object.■ The delegating object keeps a reference to other

object –the delegate, and when requested it sends a message to it.

Singleton■ One of the most used design pattern when

developing for iOS.

■ Powerful way to share data between different parts of the code.

■ A singleton object provides a global point of access to the resources of its class.

Story-board■Storyboard helps graphically layout

your app before you code it.■It offers similar functionality like

xib/nibs■Because it has graphical

representation that makes it easy to see the “flow” of application.

■ Thank you

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