Adventures in Swift and iOS App Development
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 …
It's sometimes nice to add a little sound to your applications, and even better to add a voice. Outside Siri, you can use a cool and simple AVFoundation API to make iOS devices talk. Let's learn how to use the Speech synthesizer. Download the starter file. I've made an app for you that has a …
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 …
An often neglected feature of Xcode is code snippets. Code snippets are quick ways to add code you frequently use. In Xcode 10 there were some major changes to code snippets, which might confuse those who use them now, but make them even easier to use. Let's take a look at this cool feature. I'm using …
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 …
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 …
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 …
