加载UIViewController“来自”笔尖文件 [英] Loading UIViewController "from" Nib File

问题描述

我正在尝试从Nib文件创建 UIViewController 。在Google上我发现我只能从Nib加载UIView。

I am trying to create an UIViewController from a Nib file. On Google I found that I can only load an UIView from Nib.

但有些人建议我可以创建一个Nib文件（UIView），其文件所有者设置为我们的 ViewController 。

But some suggests that I could create a Nib file (of UIView) whose File Owner is set to our ViewController.

这就是我所做的，我没有崩溃，但是View没有显示。

That is what I did, I got no crashes, but the View is just not displayed.

编辑：
试图像这样推送 viewcontroller

self.navigationController!.pushViewController(CoolViewController(), animated: true );

但推送时仍显示黑屏

XCode 6.3 - 不使用故事板

XCode 6.3 - Not using Storyboards

推荐答案

您需要分配 ViewController ，然后通过告诉iOS的笔尖名称来初始化它。

You need to allocate your ViewController, then initialize it by telling the iOS the name of the nib.

我看到你正在使用Swift;我害怕我不知道快速，只有客观 - c。但是这里是如何在objective-c中完成的：

I see you're using Swift; I'm afraid I don't know swift, only objective-c. But here is how it would be done in objective-c:

[self.navigationController pushViewController [[[CoolViewController alloc] initWithNibName: @"CoolDesign" bundle: nil] autorelease];

...其中CoolDesign是笔尖的基本名称。也就是说，你在Interface Builder中创建CoolDesign.xib，Xcode将XML - text - xib编译成CoolDesign.nib，然后你告诉initWithNibName只打开@CoolDesign。

... where "CoolDesign" is the base name of your nib. That is, you create CoolDesign.xib in Interface Builder, Xcode compiles the XML - text - xib into CoolDesign.nib, then you tell initWithNibName to open just @"CoolDesign".

仅告诉Interface Builder设计文档是 UIViewController 是不够的。虽然原则上iOS可以弄明白你的意思，但原则上你可以为一个 UIViewController 子类提供多个nib。

It's not enough just to tell Interface Builder that a design document is a UIViewController. While in principle the iOS could figure out what you mean, also in principle you could have multiple nibs for a single UIViewController subclass.

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