Ios swift 4分裂阵列和滤波器

我将构建一个包含节的UICollectionView。 这些部分基于json.category的返回值

json格式如下所示：

[{"id":"1",
  "name":"Apple",
  "category":"Fruits"},
{"id":"2",
 "name":"Pie",
 "category":"Fruits"},
{"id":"3",
 "name":"Tomato",
 "category":"Vegetable"}]

我需要一个数组过滤器，该数组类似于：（用于sectionsItems和SectionName）

试试下面的代码

        let arrData = [["id": "1",
                        "name": "Apple",
                        "category": "Fruit"],
                       ["id": "2",
                        "name": "Pie",
                        "category": "Fruit"],
                       ["id": "3",
                        "name": "Tomato",
                        "category": "Vegetable"]]

        let categorieNames = Array(Set(arrData.map({$0["category"]!})))
        var arrResult:[[String]] = []
        for i in 0..<categorieNames.count {

            let categories = arrData.filter({$0["category"] == categorieNames[i]}).map({$0["name"]!})
            arrResult.append(categories)
        }
        print("result : \(arrResult)")

let arrData=[[“id”：“1”，
“名称”：“苹果”，
“类别”：“水果”]，
[“id”：“2”，
“名称”：“馅饼”，
“类别”：“水果”]，
[“id”：“3”，
“名称”：“西红柿”，
“类别”：“蔬菜”]]
让categorieNames=Array（Set（arrData.map（{$0[“category”]！}）））
var arresult:[[String]=[]
对于0..中的i，可以按如下方式执行：

let arrData = [["id": "1",
                "name": "Apple",
                "category": "Fruit"],

               ["id": "2",
                "name": "Pie",
                "category": "Fruit"],

               ["id": "3",
                "name": "Tomato",
                "category": "Vegetable"]]



var categorys = [[String]]()
var fruits = [String]()
var vegetable = [String]()

for data in arrData {

     if let category = data["category"] {
          if category == "Fruit"{
               if let aFruit = data["name"] {
                    fruits.append(aFruit)
               }
          }
          else if category == "Vegetable" {
               if let aVeggeie = data["name"] {
                     vegetable.append(aVeggeie)
               }
          }


}
}
categorys.append(fruits)
categorys.append(vegetable)

谢谢，我会在操场上测试的，它很有魅力！但是我无法使用json数据：-（请编辑您的答案并添加实际的json.Swtift 4解决方案嗨，谢谢，但类别未知。我无法检查==“水果”
let arrData = [["id": "1",
                "name": "Apple",
                "category": "Fruit"],

               ["id": "2",
                "name": "Pie",
                "category": "Fruit"],

               ["id": "3",
                "name": "Tomato",
                "category": "Vegetable"]]



var categorys = [[String]]()
var fruits = [String]()
var vegetable = [String]()

for data in arrData {

     if let category = data["category"] {
          if category == "Fruit"{
               if let aFruit = data["name"] {
                    fruits.append(aFruit)
               }
          }
          else if category == "Vegetable" {
               if let aVeggeie = data["name"] {
                     vegetable.append(aVeggeie)
               }
          }


}
}
categorys.append(fruits)
categorys.append(vegetable)