ios - 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 tableView 中显示这些数组的值，用户可以选择多个项目，即他们想要的城市和类别。我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，我如何将相应的 id 从城市和类别附加到 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

谢谢你的帮助

Answer 1

假设您有一个 categoriesTableView、citiesTableView，并且您的数组名为 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"])"
}

你的网址将是这样的:

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