使用水平翻转呈现formheet模态ViewController

Question

我目前在formSheet样式中显示一个模态UIViewController,它与coverVertical动画一起呈现.我试图从它呈现另一个模态UIViewController,使用currentContext作为演示样式,flipHorizo​​ntal用于动画样式.它确实有效,但翻转后面有一个坚实的白色白色背景.有关如何使用formSheet样式中预先存在的模态UIViewController的flipHorizo​​ntal样式成功呈现另一个表单模式UIViewController的任何建议,请欣赏!谢谢

码:

// Loading of first modalVC
- (void)showModalVC {

    Modal1VC *modal1VC = [[Modal1VC alloc] init];
    modal1VC.modalPresentationStyle = UIModalPresentationFormSheet;
    modal1VC.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    [self presentModalViewController:modal1VC animated:YES];
    [modal1VC release];

    modal1VC.view.superview.bounds = CGRectMake(0, 0, 400, 400);
}

// Loading of second modalVC in Modal1VC
- (void)buttonTapped:(id)sender {

    UIViewController *modal2VC = [[UIViewController alloc] init];
    modal2VC.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
    modal2VC.modalPresentationStyle = UIModalPresentationCurrentContext;
    modal2VC.view.backgroundColor = [UIColor greenColor];
    [self presentModalViewController:modal2VC animated:YES];
    [modal2VC release];

    modal2VC.view.superview.bounds = CGRectMake(0, 0, 400, 400);
}

Answer 1

这似乎是 的限制presentModalViewController:animated:。

[self presentModalViewController:modal2VC animated:YES]您也许可以使用 UIView 动画来获得您想要的效果，而不是。也许是这样的：

[UIView transitionWithView:self.view.window
                  duration:0.3
                   options:UIViewAnimationOptionTransitionFlipFromRight
                animations:^{
    [self presentModalViewController:modal2VC animated:NO];
} completion:NULL];