MapSwift - lesson 0

Transcript

2. iOS > Tabbed Application Product Name: ‘MapSwift’ Organization Name: your name Organization id and bundle id: reverse domain of your name Language: Swift Devices: iPhone Check ‘Create a Git Repository’ Creating a new Xcode project
3. The Run Loop “Run loops are what separates interactive apps from command-line tools” - Nicolas Bouilleaud The run loop allows your app to wait for the user to touch the screen before responding. The run loop ‘listens’ for this touch event.
4. The Run Loop Think of it as a taxi cab that circles a city block over and over waiting to pick you up. Or like a Pneumatic tube at a bank drive-through waiting for you to put a message in it, so that it can whisk it away.
5. The Run Loop There is exactly one run loop for each thread. There are six types of events that will cause a run loop to deliver a message. Besides touch events, they can be timers or messages from other apps. touch, shake, rotate, tap, timers, message data from outside processes
6. The Run Loop The important thing to remember is that the main thread (good old main()) starts an event loop at app launch that ‘listens’ for these events. Swift has hidden main()
7. The Lifecycle of an iOS app Info.plist (just XML under the hood) for high level app configuration
8. The Lifecycle of an iOS app The AppDelegate listens for device-related events
9. The Lifecycle of an iOS app
10. Cocoa Touch The framework that separates iOS development from other types of Swift development import Foundation import UIKit
11. Object Oriented Programming Concepts Each will have its own slide… Methods and Properties Encapsulation Inheritance Polymorphism Introspection Delegation Reference semantics
12. Methods and properties The methods are what the object does, the properties are the things the object has. Some find it easier to think of methods as verbs and properties as nouns. Methods and properties are declared within the class scope.
13. Methods and properties Swift methods are public by default. They can be set to private. Your ability to do this is known as encapsulation...
14. Encapsulation Objects hide as much information as they can You cannot get an object’s data unless that object exposes its data.