关闭呈现的视图控制器后推送视图控制器

push view controller after dismissing presented view controller

我有这个导航堆栈

RootVC ---> VC1 -->(呈现)-> ModalVC

我有 VC2(不在导航堆栈中)。

当呈现 ModalVC 时,我想单击我的 ModalVC 中的按钮以关闭 ModalVC,然后在之后将 VC2 推入导航堆栈VC1一键。它应该是这样的:

RootVC ---> VC1 ---> VC2

我尝试了很多方法来实现它,但只有当我 return 到我的 RootVC.

时才推送事件触发

我试着和代表一起做:

ModalVC 中点击:

[self dismissViewControllerAnimated:YES completion:^{
   if ([self.delegate respondsToSelector:@selector(dismissAndPush:)]) {
       [self.delegate performSelector:@selector(dismissAndPush:) withObject:VC2];
   }
}];

VC1中:

- (void)dismissAndPush:(UIViewController *)vc {
    [self.navigationController pushViewController:vc animated:NO];

}

请帮助理解此行为。我的错误在哪里?

来自Apple Documentation

The presenting view controller is responsible for dismissing the view controller it presented.

所以,VC1 应该关闭 ModalVC,尝试这样做

点击时的 ModalVC:

   if ([self.delegate respondsToSelector:@selector(dismissAndPush:)]) {
       [self.delegate performSelector:@selector(dismissAndPush:) withObject:VC2];
   }

在 VC1 中:

- (void)dismissAndPush:(UIViewController *)vc {

[self dismissViewControllerAnimated:YES completion:^{
    [self.navigationController pushViewController:vc animated:NO];
}];

}

其他错误。如果我理解正确的话:在关闭呈现的视图控制器之前的一些动画是导航堆栈中的阻塞动画。我用两种方法解决了这个问题:

1) 关闭前删除或设置正确的动画

2) 在导航控制器中使用setViewControllers(我select它)

- (void)dismissAndPush:(UIViewController *)vc {
    [self dismissViewControllerAnimated:NO completion:^{
        NSMutableArray *mutableControllers = [NSMutableArray arrayWithArray:self.navigationController.viewControllers];
        NSArray *controllers = [mutableControllers arrayByAddingObject:vc];
        [self.navigationController setViewControllers:controllers animated:NO];
    }];

}