WWDC24 SALE: Save 50% on all my Swift books and bundles! >>

Wrap up

Working with iBeacon locations is different from working with maps. The technology is often called micro-location because it can tell the difference between a few centimeters and a meter or more. Plus it works inside, which is somewhere GPS continues to be poor, and understandably.

What I like about iBeacons is their subtlety: hardware beacons are almost invisibly small, yet provide the ability for apps to respond to a user’s precise location – you can now make apps for museums, galleries, stores, schools, warehouses, and more, and it took less than 30 minutes.

Review what you learned

Anyone can sit through a tutorial, but it takes actual work to remember what was taught. It’s my job to make sure you take as much from these tutorials as possible, so I’ve prepared a short review to help you check your learning.

Click here to review what you learned in project 22.


One of the best ways to learn is to write your own code as often as possible, so here are three ways you should try your new knowledge to make sure you fully understand what’s going on:

  1. Write code that shows a UIAlertController when your beacon is first detected. Make sure you set a Boolean to say the alert has been shown, so it doesn’t keep appearing.
  2. Go through two or three other iBeacons in the Detect Beacon app and add their UUIDs to your app, then register all of them with iOS. Now add a second label to the app that shows new text depending on which beacon was located.
  3. Add a circle to your view, then use animation to scale it up and down depending on the distance from the beacon – try 0.001 for unknown, 0.25 for far, 0.5 for near, and 1.0 for immediate. You can make the circle by adding an image, or by creating a view that’s 256 wide by 256 high then setting its layer.cornerRadius to 128 so that it’s round.
Save 50% in my WWDC sale.

SAVE 50% To celebrate WWDC24, all our books and bundles are half price, so you can take your Swift knowledge further without spending big! Get the Swift Power Pack to build your iOS career faster, get the Swift Platform Pack to builds apps for macOS, watchOS, and beyond, or get the Swift Plus Pack to learn advanced design patterns, testing skills, and more.

Save 50% on all our books and bundles!

Share your success!

One of the most effective motivators of success is sharing your progress with other people – when you tell folks what you're doing and what you've learned, it encourages you to come back for more, which in turn will help you reach your app development goals faster.

So, now that you've done all the hard work it's time to share your success: tell folks that you've completed this project, either by clicking the button below to start composing a tweet, or by writing your own message from scratch. This will definitely encourage you to keep learning, but it will also help other folks discover my work – thank you!


Buy Pro Swift Buy Pro SwiftUI Buy Swift Design Patterns Buy Testing Swift Buy Hacking with iOS Buy Swift Coding Challenges Buy Swift on Sundays Volume One Buy Server-Side Swift Buy Advanced iOS Volume One Buy Advanced iOS Volume Two Buy Advanced iOS Volume Three Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with macOS Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Beyond Code

Was this page useful? Let us know!

Average rating: 4.4/5

Unknown user

You are not logged in

Log in or create account

Link copied to your pasteboard.