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Introduction to iOS App Development
Transcript of Introduction to iOS App Development
The iOS Ecosystem
iOS Development Tools
As of June 2013:
600 Million iOS devices
93% of those devices running iOS 6
What is an App?
An app binary
A set of resources (images, etc)
Packaged as a .app (wrapped in a .ipa)
Code signed (by Apple and/or us)
Limited hardware, particularly:
Inconsistent networking conditions
A smaller, touch-based interface
A more intimate context
Alternatives to Native Development
Web apps in a wrapper
The IDE for working with iOS.
Includes tools for building interfaces and designing a data model.
Also manages the uploading of applications to Apple for review and publishing.
Used for debugging iOS applications during development.
Is a simulator, as opposed to an emulator.
Doesn't replace testing on a device.
Profiles running applications (in the simulator or on a device) on a number of configurable metrics.
Can also be used to execute automated UI tests (and measure results).
Command Line Tools
Allows for the scripting/automation of most tasks that would otherwise require Xcode.
Uses shims to provide a level of indirection (allowing for multiple SDKs to be installed side-by-side)
iOS Developer Portal/
Web-based interfaces for managing your apps and your developer account with Apple.
The Family Tree
Lets just look at some code.
Stanford iOS Course CS 193p
Ray Wenderlich Tutorials
iOS Dev Center
Common Design Patterns in Objective-C
Chain of Responsibility
Antipattern: Factory Method/Abstract Factory
SD iOS Meetup
As of 30 minutes ago
38% of these devices running iOS 7