I want landscape left and landscape right to be allowed on the iPad only, and not on the iPhone. How should I do this? Thanks in advance.
Modify your info.plist file to have entries that look something like this:
<key>UISupportedInterfaceOrientations</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
<key>UISupportedInterfaceOrientations~ipad</key>
<array>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
More information about those keys can be seen in this Apple documentation and I worked up the answer by looking at this public repo's info.plist file (though it's from iOS 3.2, I did try it out on sample project and it seems to still work fine).