first ,i present a new viewcontroller named videoViewController
then i use three apis to change videoViewController'interfaceOrientation to UIInterfaceOrientationLandscapeRight
```
- (BOOL)shouldAutorotate{
return NO;
}
- (UIInterfaceOrientationMask)supportedInterfaceOrientations{
return UIInterfaceOrientationMaskLandscapeRight;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{
return UIInterfaceOrientationLandscapeRight;
}
```
the result is videoViewController.view.subview.constraints lost in sometimes, like the pic.
More often it is normal, but its appearance is irregular
my english is poor , if you can't understand me , tell me , i will show you more
