Learn how to use haptics to give phone vibrations and physical sensation to your iPhone apps.
Using Haptics
Sliders as Knobs
You've seen other apps rotate views, but you may have no idea how to do it yourself. Let me show you one way to rotate views. We'll make a simple knob control you might be able to use in your apps. Download the example file. On the storyboard, I added an UIImageView of a knob …
CALayer Masks
UI doesn't have to look like a rectangle. You might want a different shape for your icon. You can do that with layer masks. Let's learn how to set them up. Download the example files. You'll find an app with two square buttons. If you head over to the assets, you see I have a …
Add an Animated Drawer
You've probably seen menus that pop out of the side of an app, but do you know how to make one? With the knowledge of some simple code you too can add these to your application using auto layout. If you take a look at the example file, I've set up a storyboard for you. …
From Apple to Raspberry Pi: How to do Threading with Python and Tkinter
We're going to have a diversion away from the penguin app for a bit due to some work I 'm doing and thought it would be useful for many working with the Raspberry Pi and Python. I'm working with time-lapse photography on the Raspberry Pi, and ran into an issue which I solved with threading. …
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From Apple to Raspberry Pi: Adding Combo Box Selections and Message Boxes
We began to make our penguin data collection interface last week. Today we are going to add Combobox selections to the penguin panel. The Combobox widget codes similar to the Entry widget. Instead of text for a title it takes a list for values. We also will add our own dialog box using the messagebox …
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Living Without Storyboards: Make a Clock with Sprite Kit
Sprite Kit -- it's not just for games anymore. Sprite Kit is of course meant to write games, a full 2-d game engine waiting for use inside Xcode and iOS7. While simulating buttons writing SlippyFlippyPenguin, I began to realize there's a lot more here that could be applied to a general UI. I've often tried …
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From Apple to Raspberry Pi: Living without Storyboards and Interface Builder
In iOS, avoiding Interface Builder is nearly impossible. IB is old - as old as the Xcode SDK itself. Interface builder was one of the components of NextStep, and thus one of the reasons Steve Jobs got his old job back, who then developed NextStep into the platform for all Apple products. In more recent …
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