警告！ UIStoryboardPopoverSegue＆＃34;已弃用＆＃34;在目标c中，当我打开upopovercontroller＆gt;。,,

Question

我想通过准备segue方法打开UIPopoverPresentationController我尝试了以下代码，但它显示了一些警告错误消息，如＆＃34; UIStoryboardPopoverSegue已弃用：首先在iOS 9.0中弃用＆＃34; - 从您的访问destinationviewcontroller.popoverpresentation segue执行选择器或覆盖执行....

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    UIStoryboardPopoverSegue* popover = (UIStoryboardPopoverSegue*)segue;
    CGFloat horizontalInset = (self.frame.size.width - popover.popoverController.popoverContentSize.width) / (CGFloat)2.0;
    CGFloat verticalInset = (self.frame.size.height - popover.popoverController.popoverContentSize.width) / (CGFloat)2.0;

    popover.popoverController.popoverLayoutMargins =
    UIEdgeInsetsMake(
                     verticalInset,
                     horizontalInset,
                     verticalInset,
                     horizontalInset);
}}