Category Archives: code

Plug-And-Play OpenAL / AVFoundation Sound Engine For iPhone Apps

Posted on 2010 02 25 by Jason Job

I recently found a great sound engine for iPhone applications that is pretty much plug-and-play. This sound engine was written by Alex Restrepo under a creative commons attribution-share alike licence, so you are free to use it so long as … Continue reading →

Posted in Objective-C, code, iPhone, sound | Leave a comment

Xcode Script For Creating Properties From Instance Variables For UIViewController

Posted on 2010 02 24 by Jason Job

One of my favourite blogs on the net is Matt Gallagher’s Cocoa with Love. Today I was investigating ways to speed up my workflow in Xcode and I found a great mixed Perl and AppleScript script already written by Matt a … Continue reading →

Posted in OSX, Objective-C, XCode, code, hack, iPhone, script | 2 Comments

Online JSON Validator

Posted on 2010 02 02 by Jason Job

I was creating some JSON data with PHP to pass to an iPhone app today and I found a great online JSON validation tool: JSONLint: The JSON Validator. Just plunk your JSON string into the window and press the validate button. … Continue reading →

Posted in code, online, web | Leave a comment

When To Use self.myObject Instead Of myObject In iPhone Programming

Posted on 2010 01 25 by Jason Job

I have seen a lot of confusion on the topic of when and why to reference an object using self.myObject versus just plain myObject. It took me a while to understand this myself, and please, if I am mistaken in … Continue reading →

Posted in Objective-C, code, iPhone | Leave a comment

iPhone Camera Overlay App With Custom Button Example

Posted on 2009 12 10 by Jason Job

There seems to be a lot of interest recently in making apps that use a camera view with an overlay for augmented reality or what some might call pseudo-augmented reality applications (because often these apps just layer an image or … Continue reading →

Posted in AR, XCode, app, code, iPhone | 17 Comments

Retrieving JSON Data In iPhone Apps

Posted on 2009 08 14 by Jason Job

As described at www.json.org, JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate. The JSON format is one of two things; a list … Continue reading →

Posted in code, iPhone, online | 2 Comments

Arduino 0017 Released

Posted on 2009 08 14 by Jason Job

The latest version of the Arduino IDE has been released. From the arduino.cc website: “The open-source Arduino environment makes it easy to write code and upload it to the i/o board. It runs on Windows, Mac OS X, and Linux. The … Continue reading →

Posted in arduino, code, prototyping | Leave a comment

How To Test For An Internet Connection On The iPhone

Posted on 2009 07 23 by Jason Job

If you write an app that uses the internet then the Apple Human Interface Guidelines require that you check for a WiFi or Wireless Wide Area Network (cellular) connection and let the user know if they are not available. One … Continue reading →

Posted in code, iPhone | 2 Comments

Software Debouncing Multiple Latching Switches With Arduino

Posted on 2009 01 12 by Jason Job

This last week I have been working on making the operation of my MIDI controller prototype more robust. One of my tasks has been to debounce and latch the states of my pushbutton toggle switches. Though you could use hardware … Continue reading →

Posted in MIDI, arduino, code, make, prototyping | 3 Comments