Category: iOS Development Weekly Tips
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Xcode 10 Storyboard Changes
Note: You can also watch a video of this lesson at Lynda. com and LinkedInLearning. There’s been a few changes to the storyboard in Xcode 10, some might just drive you crazy if you don’t know how to use them. Some are really cool and will speed up your workflow. Let me show you the…
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Animate With a Map Camera
In an earlier tip, I showed you how to make a map in iPad Playgrounds. Let’s learn how to animate those maps, doing a flyover of Michigan avenue in Chicago from The former home of Chess Records at 2120 South Michigan Avenue (immortalized in the Rolling Stones song) and past Grant park to North Avenue…
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Timer Accuracy in iOS
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…
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Tips: Time Zones and Date Components
Learn how to set dates, times and time zones in iOS using the DateComponent Object. Learn an easy way to make a valid DateComponent.
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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 primary types for working with time: TimeInterval and Date. Add this…
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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.…
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Find a Language Quickly from Text
You can find a video of this lesson on iOS Development Tips Weekly from LinkedIn Learning. There’s a lot you can do with language easily in iOS and Watch OS. The Apple ecosystem has a Natural Language Processing (NLP ) system built in and easy to use. Let’s look at language recognition. Download the starter…
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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…
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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…
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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…
Make App Pie 