A class that helps us to create a custom view from XIB file easier

XibLoaderView.swift

//
//  XibLoaderView.swift
//  
//
//  Created by Nguyen Cong Huy on 20/11/2021.
//

import UIKit

/**
Usage:
 - Create a class, inherite this `XibLoaderView`
 - Create a xib file with the same name as the class name.
 - Set the class name File Owner field.
 - Drag an IBOutlet name `contentView`, then delete it in the code (because it is defined in `LoadableView`).
 - That's all for setting up. Just continue designing and coding on .xib and .swift file.
 */

class XibLoaderView: UIView {
    @IBOutlet var contentView: UIView!
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        commonInit(frame: frame)
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        
        commonInit()
    }
    
    func commonInit(frame: CGRect? = nil) {
        Bundle.main.loadNibNamed(String(describing: type(of: self)), owner: self, options: nil)
        addSubview(contentView)
        contentView.frame = bounds
        contentView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        
        if let frame = frame {
            self.frame = frame
        }
        
        setupUI()
    }
    
    func setupUI() {
    }
}