Category Archives: iOS

iPhone/iPad development

Floating Image Layers Using DeviceMotion

At Pushplay, we’re always experimenting with different interesting, interactive effects. As difficult (or painful) as it is to be “first” at something, we always are trying to push things and experiment. One of the things that inspired us to get … Continue reading

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Preloading and caching images

Oftentimes we come across situations where clients (for a number of reasons) do not deliver final images or artwork for content until right before the app is submitted — or sometimes after the app is in review or launched. While … Continue reading

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Displaying all notifications

Displaying all notifications

I’ve started to use NSNotifications a lot lately, to communicate between multiple objects on screen at the same time. I’ve found them to be extremely handy when dealing with multiple buttons in multiple panels that have to have cross-communication (or … Continue reading

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Walking through views

Walking through views

“I’m just walking my beat friend. Mexico is my beat and I’m walking it…” (Johnny Depp / Once Upon a Time in Mexico) In our case, UIViews are our beat, and we spend a lot of time walking them. Here’s … Continue reading

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Quick tip: Global #defines

Quick tip: Global #defines

Some times, there is a need to have a function available in multiple classes. Oftentimes, projects with multiple classes have #defines scattered all over the place. What I’ve started to do is create a file named global.h (New File, select … Continue reading

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Swiping and Sliding Multi-view Framework

Swiping and Sliding Multi-view Framework

It’s been a few months since I’ve posted, and I wanted to make up for it. I’ve built upon my previous Multi-view Framework, in order to allow navigating to different views via swiping. This project was built for the iPhone, … Continue reading

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One-tap UIImagePickerController (iPhone camera)

One-tap UIImagePickerController (iPhone camera)

I’ve been working on a number of iPhone camera applications. The default photograph functionality seemed kind of awkward to me, and I wanted to have a much simpler process and interface. This is an example of an Xcode project which … Continue reading

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Gesture motions for window-and-mouse based interfaces

Gesture motions for window-and-mouse based interfaces

Back in early 2007, I designed a method to introduce mouse-based “gestures” into a windowed interface environment. Fast forward to 2010, when the “year of the tablet” might mean the beginning of the end for mouse-based computing… Still, there are … Continue reading

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Locating an iPhone in 3D space

Locating an iPhone in 3D space

A world of augmented reality possibilities were opened up once the capability to superimpose graphics over the camera display was made available by Apple. One of my initial game ideas required this functionality, but it’s been a case of “wait … Continue reading

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Generating iPhone promotional banner ads

Generating iPhone promotional banner ads

I was looking for a different way to promote iPhone applications online (something a little more engaging than the “Available on the iPhone App Store” banner)… Because I had been manually taking screen shots and compositing them into an iPhone … Continue reading

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Developing Localized iPhone Applications

Developing Localized iPhone Applications

One thing that makes the iPhone so much fun (development-wise) is the ease of localization integration. Unlike website (or most software) development, XCode makes it easy to create and organize all text within an application, send it off to be … Continue reading

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How to change an iPhone App name from XCode

How to change an iPhone App name from XCode

Problem: Changing a project name (or an app name) for a project you’re developing in XCode can become a cumbersome task, with random errors showing up and the old name appearing when you least expect it. I’ve come up with … Continue reading

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