Iphone – ad hoc installation error

Are you changing your version for each build?

I don't remember getting an error message, but I found that if I did not change the version information each time, I could not drag and drop to install the new version. I would need to delete the app first.

Not sure if this will help, but it is the only thing I can think of so far.

I think the least intrusive way of doing this is as follows:

1. Check if the user-agent is that of an iPhone/iPod Touch
2. Check for an appInstalled cookie
3. If the cookie exists and is set to true, set window.location to your-uri:// (or do the redirect server side)
4. If the cookie doesn't exist, open a "Did you know Your Site Name has an iPhone application?" modal with a "Yep, I've already got it", "Nope, but I'd love to try it", and "Leave me alone" button.
   1. The "Yep" button sets the cookie to true and redirects to your-uri://
   2. The "Nope" button redirects to "http://itunes.com/apps/yourappname" which will open the App Store on the device
   3. The "Leave me alone" button sets the cookie to false and closes the modal

The other option I've played with but found a little clunky was to do the following in Javascript:

setTimeout(function() {
  window.location = "http://itunes.com/apps/yourappname";
}, 25);

// If "custom-uri://" is registered the app will launch immediately and your
// timer won't fire. If it's not set, you'll get an ugly "Cannot Open Page"
// dialogue prior to the App Store application launching
window.location = "custom-uri://";