推薦第三方庫SwiftGen和R.swift

如果不想用第三方庫,可以參考如下寫法

import Foundation
import UIKit

typealias DXAsset = UIImage.Asset

extension UIImage {
    enum Asset : String {
        /// 按鈕選中狀態(tài)
        case btn_selected_icon = "btn_selected"
        /// 按鈕未選中狀態(tài)
        case btn_unselected_icon = "btn_radio"
        /// 返回按鈕
        case btn_bar_back_icon = "btn_bar_back"
        
        var image : UIImage {
            return UIImage(asset: self)
        }
    }
    
    convenience init(asset: Asset) {
        self.init(named: asset.rawValue)!
    }
}

使用示例

cell.selectIconView.image = DXAsset.btn_unselected_icon.image

并且有提示

demo.png