Tag: App Programming

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…

Add an Animated Drawer

You’ve probably seen menus that pop out of the side of an app, but do you know how to make one? With the knowledge of some simple code you too can add these to your application using auto layout. If you take a look…

Tip: Add Drop Shadows

A video of this tip can be found on LinkedIn Learning User Interfaces often use shadows to make them look less flat, but it isn’t obvious how to add one to a view on your app. In this tip, I’ll show you how to…

Make Round Buttons and UIViews

In the good old days, Apple used a lot of rounded corner buttons. Many developers use several images to get the effect of round buttons. The CALayer of UIButton does have a feature for you to easily get rounded corners, and even circular buttons….

Date and Time in iOS

The song says time is on my side, but I sometimes I wonder about that when trying to work with the time types in iOS. Let me show you some of the time types. In Xcode, Open up a blank playground. There are two…

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…

This Old App: Update to Xcode 9

A few months ago, Apple threw out my app Interval Runcalc for being too old. While it wasn’t the most innovative, complex or profitable, it was an app I used frequently myself. It was a calculator for time, pace and distance for running not…

Swift WatchKit: Adding Text, Dictation, and Emoji Input to Apple Watch 

Sometimes Apple gives away stuff you can get very happy about — like a chance to use voice dictation. If you have had a chance to play with an Apple Watch, the watch has a simple but great way to deal with text messages….

Swift Swift: Using NSTimer to Make a Timer or Alarm

With the launch of the Apple Watch it’s time for timers in iOS and WatchKit. Learning to use timers is a very important skill for most developers. There are many places we need to schedule regular intervals of time to do things. In my…

Swift Swift: Using Color and UIColor in Swift Part 1: RGB

[Updated to Swift 2.0/iOS9.0 9/18/15 SJL – errors corrected 11/20/15] I’m color blind, and that makes me a very good person to teach you about color and UIColor.  I’ve painted for many years and my color blindness does not detract but actually helps me…