android - 如果退出相同的值android studio如何对json数组数据进行分组

Question

我有这样的 Json，我想按 sub_name 分组以获取电话数组，移动操作(每个数组具有相同的数据值只获取数组中的一个)。

 category: {
    cate: [
    {
    sub_id: "568",
    sub_name: "Phones",
    ns_id: "17002",
    ns_name: "Mobile Phone"
    },
    {
    sub_id: "568",
    sub_name: "Phones",
    ns_id: "18787",
    ns_name: "Other Phones"
    },
    {
    sub_id: "372",
    sub_name: "Mobile Operation",
    ns_id: "3650",
    ns_name: "Sim Card"
    }
}

Answer 1

在你的情况下，试试

String subName = "Phones";
JSONObject json = new JSONObject(jsonString);
JSONArray jsonArray = json.getJSONArray("cate");
JSONArray groupJsonWithSubName = new JSONArray();

for(int i=0; i < jsonArray.length(); i++){
    JSONObject jsonData = jsonArray.getJSONObject(i);

    if(jsonData.getString("sub_name").equals(subName){
         groupJsonWithSubName.put(jsonData);
    }
}
// in here groupJsonWithSubName will contains all json object which have sub_name="Phones"