Adventures in Swift and iOS App Development
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 shadows using the CALayer found in UIViews, and a few …
Note:You can find a video of this tip here on LinkedIn Learning If there's one thing in auto layout that drives me nuts it is laying out for landscape different than portrait on an iPad. Phones are easy since the class sizes are different for portrait and landscape. For all phones, if I have a …
Continue reading "Layout iPad Landscape and Multitasking Apps"
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. Download the code from GitHub and open the starter file. It …
You'll often want default settings that users can change. iOS provides the settings bundle for storing this information. Let's look at how to use the settings bundle. Download the starter example file. I created a project which eventually will display the user's default pizza. We'll finish the code to add that pizza. To add a …
One of the more perplexing parts of using tab bar controllers is customizing tabs. If you understand some of the properties of an image, You can do some major customization. Download the example file. If you open the main storyboard you'll see three view controllers. You may see Question marks in the image like this: …
If you've worked with notifications before, you've probably dealt with user permissions. IN iOS 12, there's a new type of user notification permission to handle a situation that happens often, which is super easy to add to already existent code. Download the exercise file and you'll find a project I adapted from chapter three of my …
Continue reading "Add Provisional Permissions for Notifications"
There's been some great changes to playgrounds in Xcode 10 that will make your code even easier to prototype than ever before. Let's take a look at some of the changes. In Xcode 10 open a new single view playground, and save it as Xcode10Playground. If you are familiar with the Xcode 9 playground single …
It's buried in the docs, so you might not know how inaccurate Timer objects can be if you are trying to show the time. Let's look at that inaccuracy and how to work around it. You'll find in the exercise file on GitHub a starter project where I've put together a demo app with three …
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 primary types for working with time: TimeInterval and Date. Add this …
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. …
