如何呈现第二个ViewController并解除第一个

Question

在父ViewController中使用以下代码,我想在第一个上面显示第二个视图,然后关闭第一个:

// Animates the next questionViewController using the first questionViewController
[previousView presentViewController:nextQuestionViewController animated:YES completion:nil];

// Dismiss the first questionViewController
[previousView dismissViewControllerAnimated:NO completion:nil];

运行时,会显示第二个视图,但第一个视图不会被忽略.

Answer 1

您需要首先关闭"previousView"然后显示"nextQuestionViewController":

// Dismiss the first questionViewController
[previousView dismissViewControllerAnimated:NO completion:nil];

// Animates the next questionViewController using the first questionViewController
[previousView presentViewController:nextQuestionViewController animated:YES completion:nil];

Answer 2

尝试

[self dismissViewControllerAnimated:NO completion:nil];

失败了：

[self.navigationController popViewControllerAnimated:YES];