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In-App Purchase Tutorial: Getting Started

<i>Update note</i>: Pietro Rea updated this tutorial for Xcode 10, Swift 4.2 and iOS 11/12. Ray Wenderlich wrote the original.Get started with in-app …

Apps

Extension Approach to Keeping UITextFields in Sight

It’s inevitable — you design a great UI and then run it in a simulator or on a device. You tap a text field, the keyboard swoops up from the bottom, …

OnCore Genius Golf Ball

With the Caliber, OnCore figured out how to make a playable golf ball with a hollow metal core. Now they're using the core of the ball for something …

Golf

Cognitive psychology for UX: 7 Gestalt principles of visual perception

The human brain is wired to see structure, logic, and patterns. It helps us make sense of the world. For example, what do you see when you look at …

The gadget that transforms your iPhone or Android into a universal remote is only $15 right now

Once upon a time, smartphone makers included a little infrared blaster in their phones so that they could be used as universal remotes. The bad news …

Tutorial Series On Navigation and Segues in iOS

Hi there! I created a series of tutorials about segues in iOS and navigation between view controllers. In these step-by-step tutorials, you will …

Tab Bar Controllers in Xcode 8 Storyboards

In this lesson, we’ll take a look at tab bar controllers and how to add them in the storyboard. For more on implementing them completely in code see …

How to Generate PDF using HTML Templates and UIPrintPageRenderer in iOS

Have you ever been asked to create PDF documents with content straight from your app? Have you ever even thought how to do that, if you’ve never done …

HTML

Five Simple Tips to Make User Friendly Forms on iOS

Even though forms aren't difficult to implement on iOS, they can be frustrating to use. In today's tutorial, I'd like to share five simple tips that …

Building a ToDo App Using Realm and Swift

After the big evolution in smart phones in the last years, a lot of tools have been developed to make life easier and simpler for developers to …

App Store

Building a Simple Barcode Reader App in Swift

In the hand of the clerk at the local grocer’s checkout line, helping to check in bags and passengers at the airport, or assisting in the tedious …

Barcodes

Swift Swift Tutorials: Passing Data in Tab Bar Controllers

<i>[Updated for Swift 2.0/iOS9 9/21/15 SJL]</i><p>While you can delegate between view controllers in tab bar controllers, it’s debatable if you want to. Tab …

UICollectionView Tutorial: Getting Started

Create your own grid-based photo browsing app with collection views!<i>Note</i>: This tutorial was updated for Swift and iOS 9 by Bradley Johnson. Original …

iOS Programming

Module #2 - Introduction to Xamarin.Forms

In this session, we will dive into Xamarin.Forms, a cross-platform UI framework that allows you to create native UIs for iOS, Android and Windows …

This Infographic Lists 128 Words You Can Use Instead of “Very”

Our English teachers told us to avoid the word “very” because it’s weak and vague. They were right, and many times, we use “very” as a modifier for a …

A 'Magic' Trick You Can Easily Learn

I've always wanted to learn a magic trick to use on my inebriated friends...and now I've got one. In this <i>Brain Games</i> “DIY” segment, illusionist Max …

Beginner Books

Learning to code still remains a buzz. The problem facing any budding new programmer is how to start. Questions abound. What’s the best programming …

12 Awesome CSS3 Features That You Can Finally Start Using

If you are like me, when you see an impressive demo of a new CSS3 feature, you can't wait to start using it in websites. Of course, then you see that …

The final OUYA retail console is ready, we go hands-on

It's been a long time coming, and now the Android-powered, Kickstarter-funded OUYA video game console is finally heading to backers. Sure, the final retail units for non-backers won't be available until June, but around 50,000 lucky folks who pledged over $99 to OUYA's massively successful campaign …