How-To

If you find it more convenient to listen to some text on your iPhone or iPad rather than read it, you can easily enable that capability. You might, for example, want your device to read a web page or ebook or other document to you as you drive. While this feature has been available for some time, note that iOS 8 gives a convenient new option for invoking speech.

In part 2 of this post on Swift's protocols, you will learn practical uses for declaring custom protocols in your own apps, and learn further how they improve the architecture of your apps and make them easier to enhance and extend.

In part 1 of this post, I demonstrated how to implement existing Cocoa Touch protocols in your apps. Now you'll learn how and why to create your very own. First, we need to cover the basic construction of a Swift protocol.

Thanks to iOS 8, Apple lovers finally have access to widgets on their iPhones. But users will find some widgets more useful than others. Maximize their utility by deleting widgets you don't need to see in the Today view in Notifications and arranging the rest in the most convenient order.

Protocols are a powerful, advanced tool that help make your apps easier to design and extend. They define standard behavior in classes that are not necessarily related. Protocols used together with delegates allow you to create classes with a well-balanced load of responsibilities.

I like Apple's Maps app, but a number of times it's taken me to a location that simply didn't exist: an Indian restaurant, a zoo, a hotel in a small town, a Chinese restaurant. I diligently follow Siri's directions and when she says I've arrived, the establishment in question is nowhere to be seen. And in several of these cases probably never existed. If you've had similar problems and prefer maps from third parties such as Google, you can now conveniently access these maps from within Apple's Maps app.

In previous posts I have touched on inheritance in Swift. In this post, I'm going to be diving deeper and giving you a fuller picture of how inheritance works in Swift, and how you can use it to create apps that are easy to extend when you need to add new functionality. Along the way, you will also learn about the important concept of polymorphism and learn how to use Xcode's new playgrounds!

One of the great new features in iOS 8 is the ability to send an audio message. Sometimes it's simply a lot more convenient to make a quick recording than it is to type a message. Why not simply call the person? Because convention requires that we then engage in conversation. An audio message is more efficient. And the party you're sending it to can listen at his or her convenience rather than having to answer the phone.