ios – 为iPhone 6 Plus设置UIModalPresentationStyle？

我想在所有设备和所有方向上的弹出窗口中始终显示视图控制器.我试图通过采用UIPopoverPresentationControllerDelegate并设置sourceView和sourceRect来实现这一目标.故事板中的segue被配置为Present As Popover segue.这适用于所有设备和方向,除了横向的iPhone 6 Plus.在这种情况下,视图控制器在表单中从屏幕底部向上滑动.如何防止它始终出现在弹出框中？

override func prepareForSegue(segue: UIStoryboardSegue,sender: AnyObject?) {
    let popoverPresentationController = segue.desTinationViewController.popoverPresentationController
    popoverPresentationController?.delegate = self
    popoverPresentationController?.sourceView = self.titleLabel!.superview
    popoverPresentationController?.sourceRect = self.titleLabel!.frame
}

func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
    return UIModalPresentationStyle.None
}

- (UIModalPresentationStylE)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller TraitCollection:(UITraitCollection *)TraitCollection {
    // This method is called in iOS 8.3 or later regardless of Trait collection,in which case use the original presentation style (UIModalPresentationNone signals no adaptation)
    return UIModalPresentationNone;
}