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

问题描述

我正在尝试从 Nib 文件创建一个 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 的)，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，但只是没有显示视图.

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

尝试像这样推送 viewcontroller

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

但是按了还是黑屏

XCode 6.3 - 不使用故事板

XCode 6.3 - Not using Storyboards

推荐答案

你需要分配你的ViewController，然后通过告诉iOS笔尖的名字来初始化它.

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

我看到你在使用 Swift；恐怕我不知道swift，只知道objective-c.但这是在objective-c中完成的方式:

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"是您笔尖的基本名称.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 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".

仅仅告诉 Interface Builder 设计文档是一个 UIViewController 是不够的.虽然原则上 iOS 可以弄清楚你的意思，但原则上你可以为单个 UIViewController 子类使用多个笔尖.

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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