AppDelegate.mとInfo.plistを以下のように修正することで動いた。
AppDelegate.m
// Supported orientations: Landscape. Customize it for your own needs
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
//return UIInterfaceOrientationIsLandscape(interfaceOrientation); ←修正前
returnUIInterfaceOrientationIsPortrait(interfaceOrientation); // ←修正後
}
Info.plist
Supported interface orientations
Item 0 Landscape (left home button)
↓
Item 0 Portrait (bottom home button)
Item 1 Landscape (right home button)
↓
Item 1 Portrait (top home button)