Category: iOS Development Weekly Tips

Thrown Errors

There’s many ways to handle errors in Swift. For some errors, using throws is a great way to handle errors without crashing the system. Download the exercise file. You’ll find a project with an embedded playground.  While there’s a lot better ways to do… Continue Reading “Thrown Errors”

Swift Strings Are Not C Strings or NSStrings

In many popular programming languages strings are little more than an array of characters, often referred to as C strings since C was one of the first languages to take this approach to strings. As we learned in the last post, with Swift’s use… Continue Reading “Swift Strings Are Not C Strings or NSStrings”

Unicode Characters in Strings

Special characters like emoji, accents, and symbols in your strings are easier to get than you think. This week, we’ll talk about how using Unicode characters in Swift Strings. Open the exercise file and you’ll find a project which we’ll use for this. I… Continue Reading “Unicode Characters in Strings”

Replace Segmented Controls with Button Arrays

You’ve probably used the Segmented control before like this one It’s great for some simple uses but lacks flexibility. Besides using only text or single color icon, it doesn’t work in vertical or other arrangements. Let’s look at another solution: Using Button arrays.  In… Continue Reading “Replace Segmented Controls with Button Arrays”

Use Test Flight

One of the really cool features of the App development process is getting real users to beta test your app. iOS  has a great way to do this with the test flight app. This week, I’ll summarize the steps to set up Test Flight… Continue Reading “Use Test Flight”

Using Haptics

Learn how to use haptics to give phone vibrations and physical sensation to your iPhone apps.

Fix Stack View Disasters

Learn how to take a disaster of nested stack views and untangle it into a great user interface.

Time Picker Part 2: Strings to Time Intervals

In the last tip,  I showed you how to use UIPickerControllers to make a time interval input. What I didn’t show you is how to output that. In this tip I’ll show you how to read and convert data from a picker that has… Continue Reading “Time Picker Part 2: Strings to Time Intervals”

Protocols and Time Pickers

While there is the date components picker, sometimes you want a picker the gives a time interval in seconds. In this two-part tutorial, Let me show you how to set up one, and discuss some good uses of protocols beyondself If you download the… Continue Reading “Protocols and Time Pickers”

CALayer Masks

UI doesn’t have to look like a rectangle. You might want a different shape for your icon. You can do that with layer masks. Let’s learn how to set them up. Download the example files. You’ll find an app with two square buttons. If… Continue Reading “CALayer Masks”