Specify images for iPad in Xcode like @2x for iPhone 4

Question

I have upgraded my current target to iPad and made a universal app and the time for adjusting my iphone app to ipad would decrease significantly if there is an answer for th

Answer 1

I don't think there's a way to get the OS to pick it automatically for you, like there is for the Retina display. But, you could create a convenience method to return your filenames for you like:

-(NSString*) myImageFilename:(NSString*)baseName withExtension:(NSString*)ext {

 if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
  return [NSString stringWithFormat:"%@@iPadSize.%@"];
 } else {
  return [NSString stringWithFormat:"%@.%@"];
 } 

}

Answer 2

In iOS 4.0 and later, it is possible to mark individual resource files as usable only on a specific type of device To associate a resource file with a particular device, you add a custom modifier string to its filename. The inclusion of this modifier string yields filenames with the following format:

 <basename><device>.<filename_extension>

To load the iPad specific resources you should use ~ipad. Example: create the image named AwesomeImage~ipad.png and load with [UIImage imageNamed:@"AwesomeImage.png"] like you do for retina display image.

For more information: http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/LoadingResources/Introduction/Introduction.html At "iOS Supports Device-Specific Resources" section.