Ow, now I get it, you only want to rotate the dialog, so the Activity remains in portrait, but the dialog rotates, so the user can see the dialog as het should be.
Well, you can't

. A work around is making a Transparent/translucent activity, which shows the input dialog, and which IS able to fully rotate. So your static Activity will startForResult() this DialogActivity, the user enters it's data and the DialogActivity closes, returning the data to the static Activity. That's why it should be Transparent (so the user see the static activity behind it), or translucent (might be better, as the user still see the original Activity, but as it's a bit blurred the user knows this is a special circumstance).
Oh btw: * This is not a code snippet, Moved *