UDID usage rejected by Apple for iOS apps

In iOS 5+ Apple deprecated usage of the device UDID. It appears Apple started rejecting apps for using the UDID. The way to get an unique device id was: 1 NSString *UDID = [[UIDevice currentDevice] uniqueIdentifier];NSString *UDID = [[UIDevice...

App icon without gloss

Ever noticed that on iOS devices there are icons with “gloss” and icons without? The Twitter icon below does have a gloss, the Dropbox icon does not. The default setting in an XCode project is to apply gloss to your icons. If your icon already has a gloss...

Memory management in iOS

In iOS 5 “ARC” has been introduced. ARC stands for Automatic Reference Counting. The posting below is still valid for iOS < 5. In iOS 5 the there still is reference counting, but it is automatic. Therefore ARC is no garbage collection. -----------...

Prevent an app from running in the background

There are a few reasons why you would not want your app to run in the background, for example: During development it is easier not to run in the background. The default situation is that when you quit an app in the simulator, the app continues running in the...