hide iPhone status bar

March 9, 2009

To hide the status bar in your iPhone app, add the UIStatusBarHidden Boolean key to the Info.plist file and set it’s value to YES.


creating and drawing on a new UIImage

February 23, 2009

Someone asked me how to create a new image and draw another UIImage on it. Here’s the public answer, so everyone can benefit 😉


saving jpeg, tiff and png images in cocoa

February 22, 2009

The documentation about saving images from CGImages in cocoa is pretty vague to say the least. Here are some code snippets for saving jpeg, tiff and png files.


ssh and scp without password

January 31, 2009

If you have to login to your server using ssh, typing the password every time gets annoying pretty fast. You also need to get around the password check for automating scp. It’s very easy to setup ssh so that it works without typing in your password. It works by creating a DSA key on your […]


free iphone app version from the same xcode project

January 27, 2009

There are more than 15,000 apps in the app store and hundreds are added daily. You need a way to show off your awesome creation to the millions of potential buyers. One of the most effective marketing tools for small fish is releasing a free version of the app. To do that, you could copy […]


triple monitor setup with unibody macbook

January 17, 2009

You can hook up two external monitors to your unibody MacBook and I’ll show you how to do it:


custom UIImagePickerController camera view

January 12, 2009

WARNING: While there are many apps (including some of mine) that use this technique, you should know some new apps and updates to existing apps have been rejected recently (april/2009). Please read the comments. So far I don’t know of any instances where the developer successfully argued Apple’s decision if the app was rejected. With […]


aluminum MacBook 4gb ram upgrade – no problem!

January 8, 2009

You might have read articles on the internet about aluminum MacBooks becoming unstable after 3rd party RAM upgrade. Well, some good news: I’m writing this post on a 2.0ghz aluminum MacBook with 4gb memory from OWC!


how to fix iphone code signing errors

January 4, 2009

This post is a collection of all code signing solutions, including my suggestions, in one place. You can find fixes for issues like: distribution profile not showing up in xcode packaging is using the wrong folder no packaging or code signing done during build code signing with the wrong certificate error during app upload saying […]