Question

我已将此代码写入Swift，但最后一行代码返回此错误消息：

无法调用非功能类型的值＆＃39; [UIColor]＆＃39;

import Foundation
import UIKit

struct Colores {
    let colores = [UIColor(red: 210/255.0, green: 90/255.0, blue: 45/255.0, alpha: 1),
        UIColor(red: 40/255.0, green: 170/255.0, blue: 45/255.0, alpha: 1),
        UIColor(red: 3/255.0, green: 180/255.0, blue: 90/255.0, alpha: 1),
        UIColor(red: 210/255.0, green: 190/255.0, blue: 5/255.0, alpha: 1),
        UIColor(red: 120/255.0, green: 120/255.0, blue: 50/255.0, alpha: 1),
        UIColor(red: 130/255.0, green: 80/255.0, blue: 90/255.0, alpha: 1),
        UIColor(red: 130/255.0, green: 130/255.0, blue: 130/255.0, alpha: 1),
        UIColor(red: 3/255.0, green: 50/255.0, blue: 90/255.0, alpha: 1)]


    func regresaColorAleatorio() -> UIColor{
        let posicion = Int(arc4random()) % colores.count
        return colores(posicion)
    }
}

Answer 1

你犯了一些语法错误。 colores(posicion)应为colores[posicion]

struct Colores {
  let colores = [UIColor(red: 210/255.0, green: 90/255.0, blue: 45/255.0, alpha: 1),
    UIColor(red: 40/255.0, green: 170/255.0, blue: 45/255.0, alpha: 1),
    UIColor(red: 3/255.0, green: 180/255.0, blue: 90/255.0, alpha: 1),
    UIColor(red: 210/255.0, green: 190/255.0, blue: 5/255.0, alpha: 1),
    UIColor(red: 120/255.0, green: 120/255.0, blue: 50/255.0, alpha: 1),
    UIColor(red: 130/255.0, green: 80/255.0, blue: 90/255.0, alpha: 1),
    UIColor(red: 130/255.0, green: 130/255.0, blue: 130/255.0, alpha: 1),
    UIColor(red: 3/255.0, green: 50/255.0, blue: 90/255.0, alpha: 1)]


  func regresaColorAleatorio() -> UIColor{
    let posicion = Int(arc4random()) % colores.count
    return colores[posicion]
  }
}

无法调用非函数类型的值[UIColor]

1 个答案: