以编程方式创建segue [英] Creating a segue programmatically

问题描述

我有一个共同的 UIViewController ，我所有的 UIViewsControllers 都会扩展以重用一些常见的操作。

I have a common UIViewController that all my UIViewsControllers extend to reuse some common operations.

我想在这个Common UIViewController 上设置一个segue，以便所有其他 UIViewControllers 继承。

I want to set up a segue on this "Common" UIViewController so that all the other UIViewControllers inherit.

我想弄清楚如何以编程方式做到这一点。

I am trying to figure out how do I do that programmatically.

我想这个问题也可以如何为所有 UIViewControllers 设置 segue ，而无需进入故事板并手动完成。

I guess that the question could also be how do I set a segue for all my UIViewControllers without going into the story board and do them by hand.

推荐答案

根据定义，segue不能独立于故事板而存在。它甚至出现在班级名称中： UIStoryboardSegue 。您不能以编程方式创建segues - 它是为您创建它们的storyboard运行时。您通常可以在视图控制器的代码中调用 performSegueWithIdentifier：，但这依赖于已在故事板中设置segue以供参考。

By definition a segue can't really exist independently of a storyboard. It's even there in the name of the class: UIStoryboardSegue. You don't create segues programmatically - it is the storyboard runtime that creates them for you. You can normally call performSegueWithIdentifier: in your view controller's code, but this relies on having a segue already set up in the storyboard to reference.

我认为您要问的是如何在公共视图控制器（基类）中创建一个将转换为新视图控制器的方法，并将由所有派生类继承。您可以通过向基类视图控制器创建类似这样的方法来完成此操作：

What I think you are asking though is how you can create a method in your common view controller (base class) that will transition to a new view controller, and will be inherited by all derived classes. You could do this by creating a method like this one to your base class view controller:

- (IBAction)pushMyNewViewController
{
    MyNewViewController *myNewVC = [[MyNewViewController alloc] init];

    // do any setup you need for myNewVC

    [self presentModalViewController:myNewVC animated:YES];
}

然后在派生类中，单击相应按钮时调用该方法或者选择了表格行等等。

and then in your derived class, call that method when the appropriate button is clicked or table row is selected or whatever.

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