ios - performSegueWithIdentifier 不产生带有标识符错误的 segue

Question

我很难让 performSegueWithIdentifier 工作。我不断得到

"Receiver (<UINavigationController: 0x1e59a9d0>) has no segue with
 identifier 'identA'"

我所做的是:

1. 步骤:创建单 View 应用程序并向 View Controller 添加标签 - “View controller A”。
2. 步骤:拖放另一个 View Controller 并向新的 View Controller 添加标签 - “View controller B”。
3. 步骤:选择 View Controller A 并执行 Editor->embed in->navigation controller

4. 步骤:将 View controller A 连接到 View controller B，并使用带有标识符“identA”的 push segue 像这样:

5. 步骤:在 View Controller A 的 ViewDidLoad 上添加了对 performSegueWithIdentifier 的调用。像这样:

---

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self.navigationController performSegueWithIdentifier:@"identA" sender:self];
    // Do any additional setup after loading the view, typically from a nib.
}

我做错了什么？？？

Answer 1

您正在 self.navigationController 上调用 performSegueWithIdentifier:sender: 但您在 View controller A 上设置了 segue:

wired View controller A to View controller B with push segue with Identifier "identA"

尝试替换:

[self.navigationController performSegueWithIdentifier:@"identA" sender:self];

与

[self performSegueWithIdentifier:@"identA" sender:self];