ios - 如何在swift中获取类型字典数组的键

Question

如何在swift中获取类型字典数组的键。我想要的输出为 location1、location2、location3(字典类型数据数组的键)

//下面给出了我的代码

 class ViewController: UIViewController 
        {
        var data = [NSDictionary]()

            var LocationPickerData:[String] = ["Mozzarella","Gorgonzola","Provolone","Brie","Maytag Blue","Sharp Cheddar","Monterrey Jack","Stilton","Gouda","Goat Cheese", "Asiago"]

            var LocationPickerData2 = ["Mozzarella","Gorgonzola","Provolone","Brie","Maytag Blue","Sharp Cheddar","Monterrey Jack","Stilton","Gouda","Goat Cheese", "Asiago"]

            var LocationPickerData3 = ["Mozzarella","Gorgonzola","Provolone","Brie","Maytag Blue","Sharp Cheddar","Monterrey Jack","Stilton","Gouda","Goat Cheese", "Asiago"]

     override func viewDidLoad() {
                super.viewDidLoad()
             data = [["lacation1":LocationPickerData],["location2":LocationPickerData2],["location2":LocationPickerData3]]

print(data[keys])

        }
        }

Answer 1

在您的情况下，您必须循环遍历data，并在每次迭代中获取数组中第一个对象的键。这是因为它是 Dictionaries 的 Array，而不是 Dictionary。但是，我建议将您的 data 变量构造为 Dictionary，除非您的解决方案有更多内容，否则确实没有理由不这样做。

我建议执行以下操作:

data = ["location1":LocationPickerData, "location2":LocationPickerData2, "location3":LocationPickerData3]

然后，获取 key 就很简单了:

data.keys

注意:字典不会被排序。