/*是否应该自动旋转屏幕**/
- (BOOL)shouldAutorotate{
return YES;
}
/*是否支持屏幕旋转并指明旋转方向**/
- (UIInterfaceOrientationMask)supportedInterfaceOrientations{
return UIInterfaceOrientationMaskLandscapeLeft;
}
/*相当于执行屏幕旋转**/
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{
return UIInterfaceOrientationLandscapeLeft;
}
原文：http://www.cnblogs.com/tingxins/p/5008802.html