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”
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”
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”
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”
Learn how to use haptics to give phone vibrations and physical sensation to your iPhone apps.
Learn how to take a disaster of nested stack views and untangle it into a great user interface.
You’ve seen other apps rotate views, but you may have no idea how to do it yourself. Let me show you one way to rotate views. We’ll make a simple knob control you might be able to use in your apps. Download the example… Continue Reading “Sliders as Knobs”
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”
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”