interactive design & technology
I am currently working on something that will display time in different time zones. However, you need to compare the user’s current time versus those at the target time zones to be accurate. This...
A post about tvOS UIFocus enlightenment and a helper Class that I use to help debug my user interface work. Above you’ll notice four buttons (a screenshot from my actual Apple TV). You’ll also...
If you’re ever using asynchronous network operations (say GET or POST) and want to return data when calling a method, you’ll quickly understand that it’s not so easy. But you’ll see below how you...
I had a view that I rotate a lot, often more than 360 degrees (spins around a few times). Each time it stops, I wanted to determine the resulting “visual” angle. How does one...
If you have your UITableViews snap to their cells, you’ll end up with a more refined user experience. This solution I have works with cells that are consistent in their height (static). You could...
I recently stumbled upon a really excellent article online entitled “UIDynamics, UIKit or OpenGL? 3 Types of iOS Animations For the Star Wars.” A lot of great discussion about performance of interesting techniques in...
If you’re ever setting content for things using loops (who isn’t, right?), you might often use the loop variable in a string to label something. Item 1, Item 2, etc. Especially when you’re simulating...
I was asked recently to modify the UIScrollViews that I implemented in an iOS application design. The request was to have our scroll views behave like the ones that appear in the iOS App...
I spotted this extension somewhere online a while ago (kjmcneish?) that can come in pretty handy.
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extension String { // Returns a range of characters (e.g. s[0...3]) subscript (r: Range<Int>) -> String { let start = advance(self.startIndex, r.startIndex) let end = advance(self.startIndex, r.endIndex) return substringWithRange(Range(start: start, end: end)) } // Returns the nth character (e.g. s[1]) subscript (i: Int) -> String { return self[i...i] } } |
Usage:
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let e = "On my ship, the Rocinante, Wheeling through the galaxies." let e1 = e[0...1] // Returns a range of characters ("On") let e2 = e[3] //Returns a single character ("m") |
