iPhone API notes

Subclassing

• NEVER subclass UINavigationControllers or UITabBarControllers.
• Just add whatever ViewController you want via the initWithRootViewController: method.

Turn off the Status Bar

• To turn the Status Bar off for even the 'splash screen', edit the info.plist (maybe prefixed with your app name) and add a row with a key of UIStatusBarHidden and boolean type set to true.

• Adding the following to the Application Delegate's applicationDidFinishLaunching method will also work, but will not hide the status bar during the 'splash screen':

[[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO];

Change appearance of the Status Bar

• In the Application Delegate's applicationDidFinishLaunching method add the following:

[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque];

Get UIWindow

• Useful if you are at the 'top' of the hierarchy.

UIWindow *window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];

iPhone Application notes

Screen Dimensions

• 320px wide
• 480px tall

• Status bar: 20 pixels reference

• Nav bar: 44 pixels reference

• Tab bar (bottom): 49 pixels reference

• Toolbar: 44 pixels reference

Application Icon

• Named 'Icon.png' or set CFBundleIconFile key to the correct name.
• 57px x 57px png
• The appstore requires a 512px x 512px version of the icon.
  • 72 ppi
  • RGB; no layers; no transparency
  • JPEG or TIFF file format
• To disable the shine / gloss on the icon:
  • open the Info.plist for the app
  • add a UIPrerenderedIcon row
  • set to boolean type
  • set to a value of TRUE.
• Don't forget to 'add' it to the Xcode project, don't just copy it to the folder.

Splash screen

• Named 'Default.png'
• 320px x 480px
• Don't forget to 'add' it to the Xcode project, don't just copy it to the folder.

Tab bar icons

• Gray scale png, with an alpha.
• Approx 30px x 30px