如何从 UITableView 中的数组中获取用户选择的值并将该值传递给服务器

Question

我有两个字典数组

    1. Array of categories

        [{
          "Category_ID": "1",
          "Category_en": "Event1",
        }, 
        {
          "Category_ID": "4",
          "Category_en": "Event4",
        },
        {
          "Category_ID": "9",
          "Category_en": "Event9",
        }]

    2.Array of cities
        [{
          "City_id": "1",
          "City_name": "Place1",
        }, 
        {
          "City_id": "2",
          "City_name": "Place2",
        },
        {
          "City_id": "4",
          "City_name": "Place4",
        }]

我在两个 tableViews 中显示这些数组中的值，用户可以选择多个项目，表示他们想要的城市和类别。如何获取用户选择的城市、类别并将该 id 值传递给 url 以从服务器获取结果

如果我通过此方法将选定的行作为数组获取，我如何将来自城市和类别的相应 id 附加到 url

let list = tableView.indexPathsForSelectedRows() as? [NSIndexPath]

这是从服务器获取结果的 url

   example : category_id=1,9&city_id=2,4

   http://www.events/events/searchEventsByCategory?category_id=1,9&city_id=2,4

感谢您的帮助

Answer 1

假设你有一个 categoriesTableView、citiesTableView 并且你的数组被命名为 categoryArray 和 cityArray

//create string of selected categories
let list = categoriesTableView.indexPathsForSelectedRows() as? [NSIndexPath];
let categoryIds = "";
for (let indexPath in list) {
    if (categoryIds.length == 0) {
        categoryIds = categoryArray[indexPath.row]["Category_ID"])
        continue
    }
    categoryIds = "\(categoryIds),\(categoryArray[indexPath.row]["Category_ID"])"
}

//create string of selected cities
list = citiesTableView.indexPathsForSelectedRows() as? [NSIndexPath];
let citiesIds = "";
for (let indexPath in list) {
    if (citiesIds.length == 0) {
        citiesIds = cityArray[indexPath.row]["City_id"])
        continue
    }
    citiesIds = "\(citiesIds),\(cityArray[indexPath.row]["City_id"])"
}

你的网址会是这样的：

let url = "http://www.events/events/searchEventsByCategory?category_id=\(categoryIds)&city_id=\(citiesIds)"

Answer 2

将 2 设为数组并将选定的索引目录添加到数组中

说选定的类别和选定的城市

在

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
//add selected dictory in selectedArray

}

在选择之后通过添加for循环来制作字符串