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Cloning third-party git repositories in Xcode4
Ever been confused about how to effectively compile and link third-party libraries that you may have cloned from github, bitbucket, et al? This post post describes the process of setting up your Xcode4...
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ZBar bar code / QR code reader – Android
This post describes the approach that I used to NDK compile the Zbar bar code / QR code source code into a native Android library. Preparing the Workspace Create 2 new folders in your eclipse workspace...
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Hours, Minutes and Seconds in NSPredicateEditor
The NSPredicateEditor is an excellent control that can be used to quickly give your users the ability to build up an NSPredicate. I recently added one to a Mac application I was developing, and was...
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Creating an Xcode4 Plugin
Creating an Xcode4 Plugin This tutorial describes the steps to create a very simple Xcode4 plugin project. Note that there is no formal support for Xcode plugins, so this information may change and/or...
View ArticleMoving Repository from Bitbucket to GitHub
Moving Repository from Bitbucket to GitHub I wanted to move one of my public repositories from Bitbucket to GitHub and was a bit uncertain as to the sequence of git commands that I would need to do....
View ArticleCommon Xcode4 Plugin Techniques
Common Xcode4 Plugin Techniques This tutorial explores the next steps for writing your own Xcode4 plugin. An earlier article describes how to create a project that successfully builds a plugin; this...
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XcodeExplorer – Monitor Xcode4 internals
XcodeExplorer XcodeExplorer is a quick and dirty Xcode4 plugin that allows you to watch and filter the various NSNotification events that are triggered as you use Xcode. This is useful if you are...
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Xcode4 Folder Structure
To me, the default Xcode folder layout looks like a lunatic developer has just vomited a hundred files into a single folder. This post describes the steps I normally take after I create a new Xcode...
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XcodeExplorer – Checking out the controls
So, assuming you have a great idea to extend some existing behaviour in Xcode4 using a plugin, how do you know what type of objects there are, and how to get a reference to them? I’ve just added some...
View ArticleScraping WebSites (and other data) Using Objective-C
Introducing ScrapeKit I recently needed to scrape some data from a website (from a Mac OS X application), and one of the things I was very conscious of is that the layout of the website could change...
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Automatic Migration of Core Data database within Sandbox
I recently made some core data modifications to my LogDiver – my excellent log parsing tool and planned to use Automatic Migration to migrate existing databases. The Problem However, what I found was...
View ArticleLight-weight Core Data Migration in a Sandboxed App
This post describes the steps you need to do in order to perform a light-weight Core Data migration in a sandboxed Mac OS X application. As far as I can determine, without the steps described below,...
View ArticleReading line by line from a file (supporting tailing and rolling over)
Just a quick post announcing that I have open-sourced an Objective-C class that will read line-by-line from a file. In, and of, itself this isn’t too difficult, but I’ve also added the ability to tail...
View ArticleRe-using NSOpenPanel instances and subsequent deny file-read-data error
I’ve just spent hours and hours tracking down a sporadic error in my sandboxed application where the user would occasionally report not being able to open files from an Open Files dialog. The Symptoms...
View ArticleTracking Spam Origination Using qmail and vpopmail
Many sites want you to register a “free” userid just to do the most mundane thing (such as downloading a file, viewing a picture, etc). While I don’t have a problem with that requirement in general, I...
View ArticleSupporting regular expressions in sqlite
Out of the box, sqlite3 almost supports regular expressions, but not quite. It defines an REGEXP keyword, but doesn’t provide an implementation. It does, however, provide a very easy means through...
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Migrating iOS App Through Multiple Environments
One of the challenges of any development project (iOS or otherwise) is maintaining a single code-base, yet still being able to create a build that can be configured to point to a development, system...
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Debugging NSView layouts
I’ve been trying to tame the AutoLayout beast recently, and wanted to be able to see where my various views where ending up. I started to write a NSView subclass that dumped out a printable grid in the...
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Debugging your Xcode plugin
Today I discovered how to use Xcode to debug itself, and therefore also, my plugins! In some of my other articles I talked about how to build and deploy your Xcode plugin by pressing ⌘-B, restarting...
View ArticleBinding NSMutableArray to NSArrayController
This post describes how to use KVC to bind the contents of a mutable array into an NSArrayController so that adding and removing elements from the underlying array will trigger corresponding behaviour...
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