Converting to a Universal App

I am beginning the process of turning Mach Dice into a universal app, as part of a big update that I’ve been working on. So far, it seems pretty straightforward:

  • set the “Targeted Device Family” to “iPhone/iPad”
  • create iPad versions of the xib files
  • add the main xib file to Info.plist as “NSMainNibFile~ipad”
  • add the other xib files to your code (see below)
  • uprez your images

The last one is going to take me a while but adding the xib files to your code goes something like this:

	// this gets declared somewhere at the top
	typedef enum {
	} DisplayType;
	DisplayType displayType;


	// this gets run somewhere at the start
	// determine device type
	displayType = DisplayTypeIPhone;
	// check for iPad
	float systemVersion = [[UIDevice currentDevice].systemVersion floatValue];
	if (systemVersion >= 3.2)
		if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
			displayType = DisplayTypeIPad;
	// check for Retina Display
	if (systemVersion >= 4.0)
		if ([UIScreen mainScreen].scale == 2.0)
			displayType = DisplayTypeIPhoneRetina;


	// this gets run when you load your xib files
	switch (displayType) {
		case DisplayTypeIPad:
			gameViewController = [[GameViewController alloc] initWithNibName:@"GameViewController-iPad" bundle:nil];
		case DisplayTypeIPhone:
			gameViewController = [[GameViewController alloc] initWithNibName:@"GameViewController" bundle:nil];

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