Category Archives: objective-c

Matchbook – Multi-platform Realtime Gaming

Have you ever thought that it would be cool if you could build a cross-platform or multi-platform game and connect from one platform to another without having to do all the heavy lifting with respect to matchmaking, communications, and related … Continue reading

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NSObject+SimpleJson

Certainly the subject of JSON processing on iOS is fairly old-hat at this point. After all, Apple has provided native support for JSON serialization and parsing since the release of iOS 5. So why bring it up now? Personally I’ve … Continue reading

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[XCode] Building Universal iOS Frameworks

Here’s an excellent little project that I stumbled across not too long ago: https://github.com/kstenerud/iOS-Universal-Framework This project provides a single installation shell script that will add a new Project Template to XCode, one that can be used to build universal iOS … Continue reading

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[Objective-C + Cocoa] iPhone Screen Capture Revisited

Awhile back I posted a handful of simple iOS utilities. Among them was a basic ScreenCaptureView implementation that would periodically render the contents of its subview(s) into a UIImage that was exposed as a publicly accessible property. This provides the … Continue reading

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[Objective-C + Cocoa] Runtime Performance Profiling

The iPhone SDK and XCode provide some very useful tools for application profiling, particularly with respect to tracking memory consumption and pinpointing memory leaks and other similar issues, but one thing which I have found lacking in the default toolset … Continue reading

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[Objective-C + Cocoa] Screen Capture, Multiplexing, and More

It’s been a bit quiet on the coding-front lately, so I thought I’d share a small handful of various utilities that I’ve developed over the past few weeks. None of them are particularly revolutionary, but they can certainly prove useful … Continue reading

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[Cocoa + iPhone] Avoiding ‘_handleMemoryWarning:’ Crashes

Spend enough time developing iPhone applications (particularly if you go to the trouble of collecting crash logs from your apps), and eventually you are bound to come across something like the following: This error occurs most frequently when suspending an … Continue reading

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[Objective-C + Cocoa] UIScrollView and contentSize

So here’s a simple one. For whatever reason, a UIScrollView instance only behaves correctly if you programmatically set its contentSize when you use it. This is fairly silly because in most cases the contentSize is simply the total size of … Continue reading

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[Cocoa + iPhone] UITableViewCell: It’s Broken!

I present for your consideration the following screenshot: It shows a basic table-view, in which each cell has been assigned the same image (using its built-in ‘imageView‘ property). The source image is 20 pixels square, and the imageView’s ‘contentMode‘ property … Continue reading

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[Cocoa + iPhone] Unraveling Apple’s Pagecurl

First off, I encourage anyone that’s unfamiliar of this topic to read through this short but very sweet blog post on the subject (and to take a quick look at his sample code). We’ll be picking up where Steven left … Continue reading

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