Sharing UIView subclasses between iPhone and iPad? Make your life easier with device-specific -layoutSubviews (or -drawRect, etc.) methods. Make the Objective-C runtime work for YOU!

gistfile1.m

+ (void) initialize
{
	if ( self != [KBCommentEditorView class] )
		return;
	
	// install the device-appropriate version of -layoutSubviews
	Method m1 = class_getInstanceMethod(self, @selector(layoutSubviews));
	Method m2 = class_getInstanceMethod(self, IsPad() ? @selector(layoutSubviewsIPad) : @selector(layoutSubviewsIPhone));
	method_exchangeImplementations(m1, m2);
}