Loading a XIB file to a UIView Swift

In my project I implemented the following (very similar to Peter's Solution)

import UIKit

// MARK: - Protocol Declaration

public protocol InterfaceBuilderInstantiable
{
/// The UINib that contains the view
///
/// Defaults to the swift class name if not implemented
static var associatedNib : UINib { get }
}

// MARK: - Default Implementation

extension InterfaceBuilderInstantiable
{
/// Creates a new instance from the associated Xib
///
/// - Returns: A new instance of this object loaded from xib
static func instantiateFromInterfaceBuilder() -> Self
{
return associatedNib.instantiate(withOwner:nil, options: nil)[0] as! Self
}

static var associatedNib : UINib
{
let name = String(describing: self)
return UINib(nibName: name, bundle: Bundle.main)
}
}

To use, you just simply implement the protocol:

class MyView: UIView, InterfaceBuilderInstantiable
{
// The rest

And if your nib is the same name as your class (`MyView.xib`), you're set: the default implementation of the protocol looks for a nib with the same name as the class in the main bundle.

Of course, if your nib is in another bundle or has a different name you can override the `associatedNib` and return your own nib.

for **swift 3**

class YourClass: UIView {
class func instanceFromNib() -> YourClass {
return UINib(nibName: "YourClassNibName", bundle: nil).instantiate(withOwner: nil, options: nil)[0] as! YourClass
}
}

Using Swift 3.0

let viewFromNib: UIView? = Bundle.main.loadNibNamed("NibName",
owner: nil,
options: nil)?.first

let xibView = NSBundle.mainBundle().loadNibNamed("NameXibView", owner: nil, options: nil)[0] as! UIView

Usually I use the following way to load a xib file owned by a custom `UIView`:

NSBundle.mainBundle().loadNibNamed(nibName, owner: self, options: nil)[0];