Adventures in Swift and iOS App Development
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 …
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 at left to view. You'll find an amended transcript below. You’ve …
I went to open the pizza demo to get ready for my next post and was greeted by 10 compiler error messages, all the same. 'IBOutlet' property has non-optional type 'UILabel' Just after I finished the optionals post, It turns out there a change in Beta 4. Before Beta 4, and as described in Apple's …
Continue reading "The Joys of Beta Swift: A Change to Outlets"
Back in July of 2014, I wrote this first post on using UISplitViewController in Swift. I gave how to use Apple's template, which has a few interesting quirks, such as ARC killing@IBOutlets at the drop of a hat. I said I would write another post on the subject. I ended up making this section 2 …
Continue reading "The Swift Swift Tutorial: How to Use Split View on iPad (Round 1)"
[Updating to Swift 2.0 SJL 9/17/15] Click here for the Swift 3.0 version of this post It should be one of the easiest things we do, and yet for many it is the most confusing. Getting data from one view controller to another as you switch views never seems easy. Segues might be slightly difficult, …
Tkinter lacks a good list box. There is a widget, but as shown in earlier posts in this series, it doesn't do the best job. We had to use underscores to get the list box to work. There is another widget that might do what we really want: the Text widget. The Text widget is …
Continue reading "From Apple to Raspberry Pi: Adding a Tkinter Text Box in Python"
In the last part we implemented the view and controller for the Popper's Penguins application. Now we add the model. Along the way, we will make a delegate method for the model and change our target actions to add our data to a list. Add the Model Class We want to keep a list of our penguin …
Continue reading "From Apple To Raspberry Pi: An Example of Implementing a Python MVC (Part 2)"
I gave a template for MVC in the last post, This time I'm going to use it in the Popper's Penguins application. We'll re-organize what we already did with views and controllers to match the template. We'll add the model in the next installment of this series. Changing the View Let's start by modifying the …
Continue reading "From Apple To Raspberry Pi: An Example of Implementing a Python MVC (Part 1)"
Over the last few posts we've made a clock and stopwatch application in Sprite Kit. Last time, we added an animated button display for the stopwatch. This time we get the stopwatch buttons working. Get Our Variables in Order We will use several variables in our changes. Change our variables to the following: We changed …
Continue reading "Living without Storyboards: Make a Working Stopwatch in Sprite Kit"
We've been learning parts of Python together. So far we've learned the basics of Python and setting up classes and instances in it. We have a good start on using UI elements and styling them with the basics of tk and ttk. I'd like to make something more real than a demo program with the …
Continue reading "From Apple to Raspberry Pi: Using Object Oriented Programming with Tkinter"
