Develop iPad Version or iPhone Version first?

Question

I have just finished developing an iPhone app and now I wish to make it a Universal App. I'm having issues incorporating a UISplitView into my current code to accommodate multiple detail views. I have looked at Apple's MultipleDetailViews sample code and have tried to insert into my project but it's becoming more of a headache than it should.

I'll copy all the project files from Apple's MultipleDetailViews sample code into my project, adjust my app delegate to check to see if an iPad's running, set the window to add a subView of splitViewController.view, but all I get is blank white screen when I build and run.

So my question is, do I develop the iPad version from a new project and then add my iPhone project files when I'm done?

OR

Do I make a separate iPad app and forget the whole Universal App?

Thoughts and suggestions would be much appreciated.

Answer 1

I would start with a Universal Project and generate content for the iPad, I've found downsampling easier than upscaling :). Try and make everything generic (based off the view height and width). This will make conversion to the iPhone/iPod easier.