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iosxcodeuiviewuiviewcontrollerxib

Loading UIViewController "from" Nib File

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

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

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

EDIT: Tried to push the viewcontroller like this

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

But it still showing black screen when it is pushed

XCode 6.3 - Not using Storyboards

Solution

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

    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];

    ... 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".

    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.