如何使用动态密钥为数组名称创建Pojo类

Question

我正在使用Rxandroid和翻新。我有这样的动态变化的阵列名称为自动每个阵列变化的JSON，

{ 
    "2016-10-02": [ 
    { 
     "name": "foo", 
     "id": "1", 
     "category": "bar" 

    }, 
    { 
    "name": "foo", 
     "id": "2", 
     "category": "bar" 
    }, 
    { 
    "name": "foo", 
     "id": "3", 
     "category": "bar" 
    }, 
    { 
     "name": "foo", 
     "id": "4", 
     "category": "bar" 
    } 
    ], 
    "2016-10-01": [ 
    { 
     "name": "foo", 
     "id": "5", 
     "category": "bar" 
    }, 
    { 
     "name": "foo", 
     "id": "6", 
     "category": "bar" 
    }, 
    ], 
"2016-10-03": [ 
    { 
     "name": "foo", 
     "id": "5", 
     "category": "bar" 
    } 
    ] 
} 

日期键名和的阵列变化的数量。在这个例子中有3个带日期键的数组。但是这些数组的数量各不相同。

我已经通过各种链接在*但无法解决问题。

Answer 1

使用JSONObject的键（）拿到钥匙，然后你可以遍历每个键以获得动态值：

JSONObject object = new JSONObject("your response string") 
    Iterator keys = object.keys(); 

    //Let's consider your POJO class is CategoryClass 
    // Let's take HashMap to store your POJO class for specific KEY 
    HashMap<String, ArrayList<CategoryClass>> mMap = new HashMap<String, ArrayList<CategoryClass>>(); 

    while(keys.hasNext()) { 
     // here you will get dynamic keys 
     String dynamicKey = (String)keys.next(); 

     // get the value of the dynamic key 
     JSONArray dynamicValue = object.getJSONArray(currentDynamicKey); 

     //Let's store into POJO Class and Prepare HashMap. 
     ArrayList<CategoryClass> mCategoryList = new ArrayList<CategoryClass>(); 
     for(int i = 0 ; i < dynamicValue.length(); i++){ 

      CategoryClass mCategory = new CategoryClass(); 
      mCategory.setName(dynamicValue.getString("name")); 
      mCategory.setId(dynamicValue.getString("id")); 
      mCategory.setCategory(dynamicValue.getString("category")); 

      mCategoryList.add(mCategory); 


     } 
     //Add Into Hashmap 
     mMap.put(dynamicKey, mCategoryList); 

    } 

Answer 2

从我的角度来看，这种格式是不recommended.The date应该是值如"date":"2016-10-01"而不是json key。