Download Beginning iOS 8 Programming with Swift by Simon Ng PDF

By Simon Ng

A pragmatic consultant for Beginners
If you must create an app yet don't understand the place to start, this e-book covers the full element of rapid programming and iOS eight improvement and exhibits you each step from an idea to a true app on App shop. such a lot programming books commence by way of educating the elemental programming innovations. At AppCoda, we think programming may be enjoyable to benefit. rather than simply elaborating the theories, you'll examine 'by doing' correct from the start. This sensible studying strategy has won optimistic suggestions from tens of millions of our web publication readers.

This e-book incorporates a lot of hands-on workouts and initiatives. It assumes you've got little or maybe no past programming event. you'll first create an easy app, then prototype an app suggestion, and later upload a few gains to it in every one bankruptcy, till a true app is equipped. through the method, you'll grasp fast programming and iOS eight app improvement.

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You can utilize the classes provided by the iOS SDK known as framework to do the heavy lifting. The iOS SDK comes with various frameworks or kits to make your life easier. For example, the UIKit framework provides classes to construct and manage your app’s user interface. Here we rely on the UIAlertController to create the Hello World message. A UIAlertController object displays an alert message to the user. The first line of code creates a UIAlertController object. The syntax of constructing an object from a class is very similar to calling a method.

I will explain it to you in the next chapter. Meanwhile, just consider the showMessage() as an action. When this action is called, the block of code will instruct iOS to display a “Hello World” message on screen. swift file) and user interface (storyboards). But how can we establish the relationship between our source code and user interface? To be specific for this demo, the question is: How can we connect the “Hello World” button in the storyboard with the showMessage() method in the ViewController class?

Let’s talk about the block of code enclosed in curly braces. The code block is the actual implementation of the task performed by the method. However, when developing apps in iOS, we don’t need to write all functions from scratch. For example, you don’t need to learn how to draw the alert box on the screen. You can utilize the classes provided by the iOS SDK known as framework to do the heavy lifting. The iOS SDK comes with various frameworks or kits to make your life easier. For example, the UIKit framework provides classes to construct and manage your app’s user interface.

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