Adventures in Swift and iOS App Development
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 only for straight runs but for the run/walk/run community who use multiple-speed …
One of the biggest hazards of indie developers is getting full of themselves. You'll do things that you think are right or you found on StackOverflow from some other indie developer the looks like good code. Then someone comes along and tells you otherwise. The story so far: A few months ago, Apple removed my app …
A few months ago, Apple removed my app Interval RunCalc from the App Store for being too old and not updated. In this series of articles I'll document what I did on rebuilding and improving the app. In the last installment, I got the custom table view talking with the root view. This time I’m adding multiple cells to …
Back a few months ago, an app of mine was removed from the App Store for being too old and not updated enough. In this series of articles I'll document what I did on rebuilding and improving the app. In our first installment I analyzed the changes necessary. In this second installment, I’ll start making the …
Before anyone thought that home improvement could be sexy, WGBH Boston started a series on house restoration. This Old House is still going strong after 36 seasons. If you’ve never watched, each season a house in bad shape undergoes restoration. The cast goes through the paces of find what’s wrong, finding solutions and doing the …
Continue reading "This Old App Episode 1: The Evaluation Stage"
This week's lesson covers a topic the I left off on last week's lesson, but can be used outside that context. I thus wanted to cover it separately. Last week I showed you how to use a UIPickerView to input numbers with a lot less validation. We looked at doubles, fractions and time intervals. …
Continue reading "Parsing Strings from Time and Fractions to Doubles"
Many controls such as table views, map views, scroll views and buttons use gestures. You as a developer might want to use a gesture for your own purposes outside of these controls. The gesture recognizer classes can do that. The standard ones such a as tap, pinch and rotate are rather easy to set up, …
In iOS you are limited to two labels and an image for one of the standard table view cell styles. You might want more custom cells than this. You are not alone with other developers including, Instagram, Twitter, Feedly and even Apple often using more than the basic table view cell. You can customize table view cells and populate …
There's been a major change to Swift 3.0 That many people might find a little disturbing in code, and others may have no idea what it is. In one sense that's the idea. Apple changed AnyObject to Any in Swift 3.0. This three-letter word is an extremely powerful feature,a backbone of many functions and classes, and …
About two years ago someone asked me a very good question: Why do we need delegates for UIViewControllers? He thought Swift made things easier, but this delegate stuff seems very complicated. Shouldn't we be able to send a message or initializer between classes? When I first learned iOS, I'll admit it took me months to …
Continue reading "Why do we need Delegates in iOS and WatchOS?"
