You’ve probably had it happen to you. You find a project on GitHub in Swift 3 you want to look at or update. You might have an old project Apple is urging you to update or kick out of the app store.. There were a few changes in Swift 4 and Xcode 9 that make …
Tip: Tap A Map
Most map applications let you select a point on the map. However, touching a map usually is only for moving a map around. You might want to get a coordinate at a user’s tap. In this tip, I’ll show you how to get the coordinate, and place a marker there. Download the starter file and …
Tip: Deep Dive into Any? Dictionaries
In many factory methods, you’ll find parameters with type Any? like this: userInfo parameters in iOS and context in watchOS use these. You can place anything there, but most often, you’ll use a dictionary of type [String:Any]. This is a great way of moving multiple values from one method to another without making a class …
Bug Workaround: Swift Playgrounds for iPad
While doing some work on more material for the site in Swift playgrounds, I ran into a serious bug in the Swift Playgrounds for iPad. I made a short video to tell you're about it, and I've included an extended transcript afterwards. Hello Folks this is Steve from the iOS Development Tips Weekly series on …
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Tip: Hex Colors
There’s lot of ways to represent colors. Crayons have names like Sea Green and Peach. I used these two colors since I'm color blind and they once got me in serious trouble when I was young. I and many with color blindness can't tell them apart easily. Knowing some other identifying system is critical in describing …
Tips: Why use UInt8
While you usually use an integer for counting, indexing and some math, there’s also its pure binary form the unsigned integer UInt. Let’s look at what you can do with an unsigned integer. Open up a blank swift playground named Unsigned Integer. Delete what’s there. Declare a variable as a UInt8 with the value 1. …
Tip: Image Literals
iOS Development tips weekly is a series you can find at the Lynda.com and LinkedIn Learning libraries. The first week of a week's tip will be available for free. After that, you will need a subscription to get access to it. Click the image at left to view. You'll find an amended transcript below. You’ve …
Tips: Array Tricks
iOS Development tips weekly is a series you can find at the Lynda.com and LinkedIn Learning libraries. The first week of a week's tip will be available for free. After that, you will need a subscription to get access to it. Click the image at left to view. You'll find an amended transcript below. For …
Tips: Tricks with Asset Manager
iOS Development tips weekly is a series you can find at the Lynda.com and LinkedIn Learning libraries. The first week of a week's tip will be available for free. After that, you will need a subscription to get access to it. Click the image at left to view. You'll find an amended transcript below. One …
Weekly Tip: Make an iPad Camera
iOS Development tips weekly is a series you can find at the Lynda.com and LinkedIn Learning libraries. The first week of a week's tip will be available to the public. After that, you will need a subscription to get access to it. Click the image the left to view. You'll find a transcript below. One …
