iOS个别界面旋转问题

/*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;

    

}