迅速-通过覆盖init从情节提要中初始化视图控制器 [英] swift - Initialize view controller from storyboard by overriding init

问题描述

我在情节提要中定义了一个ViewController实例.我可以通过以下方法对其进行初始化

I have a ViewController instance defined in a storyboard. I can initialize it by the following

var myViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("myViewControllerIdentifier") as! ViewController

是否有一种方法可以重写ViewController的init方法，以便可以使用

Is there a way to override the init method of ViewController so that I can initialize it using

var myViewController = ViewController()

我尝试覆盖init

convenience init() {
    self = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("SearchTableViewController") as! SearchTableViewController
}

，但是编译器不喜欢这样.有什么想法吗?

but the compiler doesn't like that. Any ideas?

推荐答案

便捷初始化程序必须始终委派给同一类的指定初始化程序，并且指定初始化程序必须调用超类初始化程序.

A convenience initializer must always delegate to a designated initializer for the same class, and a designated initializer must call a superclass initializer.

由于超类没有适当的初始化程序，因此类工厂方法可能会更好地为您服务:

Since the superclass doesn't have an appropriate initializer, you would probably be better served by a class factory method:

static func instantiate() -> SearchTableViewController
{
    return UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("SearchTableViewController") as! SearchTableViewController
}

然后使用:

var myViewController = SearchTableViewController.instantiate()

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