不使用结构数组填充 tableview [英] Not populating tableview with structure array

问题描述

我需要用结构数组填充我的 tableView.结构的第一个属性是名称.这是我试过的...

I need to populate my tableView with an array of a structure. The first property of the structure is the name. This is what I tried...

var menuArray:[Restaurant] = [Restaurant]()
 override func viewDidLoad() {
    super.viewDidLoad()
let shake = Item(name: "Shake", carbs: 20)
    let fries = Item(name: "Fries", carbs: 30)

    let beverages = Category(name: "Beverages", items: [shake])
    let chips_fries = Category(name: "Chips & Fries", items: [fries])
    let desserts = Category(name: "Desserts", items: [])
    let other = Category(name: "Other Menu Items", items: [])
    let sandwiches_burgers = Category(name: "Sandwiches & Burgers", items: [])
    let sides = Category(name: "Sides", items: [])

    a_w = Restaurant(name: "A&W", categories: [beverages, chips_fries, desserts, other, sandwiches_burgers, sides])

    let menuArray = [a_w]


}

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let currentCell = tableView.dequeueReusableCell(withIdentifier: "cell")
    let currentRestaurant = menuArray[indexPath.row]
    currentCell?.textLabel!.text = currentRestaurant.name
    return currentCell!
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    return menuArray.count
}

为什么它不会填充我的 tableView

Why won't it populate my tableView

这也是我的课...

import Foundation

struct Item {
    let name: String
    let carbs: Int
}

struct Category {
    let name: String
    let items: [Item]
}

struct Restaurant {
    let name: String
    let categories: [Category]

}

推荐答案

在这一行

let menuArray = [a_w]

您正在创建一个局部变量 menuArray，它与代表数据源数组的同名属性不同.

you are creating a local variable menuArray which is different from the property with the same name representing the data source array.

省略let

menuArray = [a_w]

PS:请使用比 a_w 更多的描述性变量名称.

PS: Please use more descriptive variable names than a_w.

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