Category: iOS 11

• July 25, 2018

  UIColor Class Extensions

  

  A couple of weeks ago, I added  a column on converting hex colors to UIColor. That was a function you had to copy and paste into your code. I’ve also shown you how to use the assets to keep color names handy. What would be even better is to do all that directly from UIColor.…
• May 30, 2018

  Apple Pencil Basics

  

  The Apple pencil adds more functionality to tablets than finger touch, even though you use the same code. Let’s do a quick explore of the Apple Pencil, and see how easy it is to add support in your app. Download the starter app. It’s a Swift playground I’ll be using on my iPad so I…
• May 23, 2018

  Tip: Update an Old App

  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…
• May 16, 2018

  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…
• May 9, 2018

  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…
• May 7, 2018

  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…
• May 2, 2018

  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…
• April 18, 2018

  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…
• March 21, 2018

  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…
• March 14, 2018

  Tip: Creating Navigation Controllers

  

  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. Not…