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我用UIStoryboardSegue
UIViewController與UIModalPresentationFormSheet沒有parentViewController?
- (void)perform
{
[(UIViewController *)self.destinationViewController setModalPresentationStyle:UIModalPresentationFormSheet];
[(UIViewController *)self.destinationViewController setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
[(UIViewController *)self.sourceViewController presentViewController:self.destinationViewController animated:YES completion:nil];
}
然後在destinationViewController
值parentViewController
是nil
。這怎麼可能,以及如何獲得sourceViewController
在destinationViewController
使用UIModalPresentationFormSheet
?
Thx,你是對的!它是'presentationViewController' –