可用旋转

-(CGAffineTransform)getOrientation{
    [[UIApplication sharedApplication] setStatusBarOrientation:UIDeviceOrientationLandscapeRight animated:YES];
    UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;
    if (orientation == UIInterfaceOrientationLandscapeLeft) {
        return CGAffineTransformMakeRotation(M_PI*1.5);
    } else if (orientation == UIInterfaceOrientationLandscapeRight) {
        return CGAffineTransformMakeRotation(M_PI/2);
    } else if (orientation == UIInterfaceOrientationPortraitUpsideDown) {
        return CGAffineTransformMakeRotation(-M_PI);
    } else {
        return CGAffineTransformIdentity;
    }
}

    CGFloat duration = [UIApplication sharedApplication].statusBarOrientationAnimationDuration;
    //开始转换
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:duration];
    self.view.transform = [self getOrientation];
    [UIView commitAnimations];