pdxipad

What criteria does Apple use in determining whether to accept an iPad app or not? Most criteria are technical, while some may reflect other circumstances, for instance Apple recently pulled the WikiLeaks app from the iTunes store. The reasons there were not technical.

For iPad apps, some of the technical reasons I’ve run into rejections usually come down to the difference in user interface between the iPad and the iPhone.

(1) One example of this is the new “popover” controller in the iPad. You can display these new popup windows, for example to select a photo from the gallery, however you have to configure them to point to the area of your app that caused it to “popover” or pop-up.

If you have a table-based app, then you need to have the popover indicate which row of the table caused the popover to appear. The indication on the popover is a triangle on its boundary that points to the area of the app that caused it to appear.

In code this means you need to get a rectangle that surrounds the table cell and tell the popover which rect to present itself from:

CGRect cellFrame = [_tableView rectForRowAtIndexPath:indexPath];
[_xpopoverController presentPopoverFromRect:cellFrame
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];

(2) Another iPad difference is the requirement to support all orientations, not just Portrait or Landscape. There is a new “upside-down” orientation.

In code, you can implement this via:

// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait) ||
(interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown) ||
(interfaceOrientation == UIInterfaceOrientationLandscapeLeft) ||
(interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}