Assign xib to the UIView in Swift

Question

in objective c it can be done in init method by

-(id)init{     self = [[[NSBundle mainBundle] loadNibNamed:@"ViewBtnWishList" owner:0 options:nil]     objectAtIndex:0]; return self; } 

but when i do this in swift

init(frame: CGRect) {     self = NSBundle.mainBundle().loadNibNamed("ViewDetailMenu", owner: 0, options: nil)[0] as? UIView } 

cannot assign to self in a method error is shown. now my approach is to create a view, and add the view loaded from nib to it. anyone have a better idea?

Answer 1

for Swift 4

extension UIView {     class func loadFromNibNamed(nibNamed: String, bundle: Bundle? = nil) -> UIView? {       return UINib(           nibName: nibNamed,           bundle: bundle       ).instantiate(withOwner: nil, options: nil)[0] as? UIView   } } 

for Swift 3

You could create an extension on UIView:

extension UIView {     class func loadFromNibNamed(nibNamed: String, bundle: NSBundle? = nil) -> UIView? {         return UINib(             nibName: nibNamed,             bundle: bundle         ).instantiateWithOwner(nil, options: nil)[0] as? UIView     } } 

Note: Using UINib is faster because it does caching for you.

Then you can just do:

ViewDetailItem.loadFromNibNamed("ViewBtnWishList") 

And you will be able to reuse that method on any view.

Answer 2

This worked for me.

override func awakeAfterUsingCoder(aDecoder: NSCoder) -> AnyObject? {     if self.subviews.count == 0 {         return loadNib()     }     return self }  private func loadNib() -> YourCustomView {     return NSBundle.mainBundle().loadNibNamed("YourCustomViewNibName", owner: nil, options: nil)[0] as YourCustomView }