Question

下面是我的代码我想过滤那个学校名称是小学但我的代码没有过滤它id我删除这一行if (object.getString("title") =="Elementary Schools")然后显示所有学校我如何过滤它？

JSONObject json2 = new JSONObject(jsonresult);
status = json2.getString("status");
if (status.equals("1")) {
    message = "data";
    JSONArray school = json2.getJSONArray("data");
    for (int i = 0; i < school.length(); i++) {         
        JSONObject object = school.getJSONObject(i);
        if (object.getString("title").equals("Elementary Schools")){
            Category_ID.add(Long.parseLong(object.getString("school_id")));
            Category_name.add(object.getString("name"));
        }
    }
}

JSON响应：

{
  "status": 1,
  "data": [
    {
      "school_id": "321",
      "name": "Chavez",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "2",
      "id": "147",
      "level_id": "1",
      "title": "Elementary Schools"
    },
    {
      "school_id": "319",
      "name": "Central",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "2",
      "id": "145",
      "level_id": "1",
      "title": "Elementary Schools"
    },
    {
      "school_id": "318",
      "name": "Carver",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "2",
      "id": "144",
      "level_id": "1",
      "title": "Elementary Schools"
    },
    {
      "school_id": "317",
      "name": "Carson",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "2",
      "id": "143",
      "level_id": "1",
      "title": "Elementary Schools"
    },
    {
      "school_id": "314",
      "name": "Burbank",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "2",
      "id": "140",
      "level_id": "1",
      "title": "Elementary Schools"
    },
    {
      "school_id": "313",
      "name": "Boone",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "2",
      "id": "139",
      "level_id": "1",
      "title": "Elementary Schools"
    },
    {
      "school_id": "454",
      "name": "Preuss",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "1",
      "id": "280",
      "level_id": "2",
      "title": "Middle Schools"
    },
    {
      "school_id": "457",
      "name": "Riley",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "1",
      "id": "284",
      "level_id": "2",
      "title": "Middle Schools"
    },
    {
      "school_id": "478",
      "name": "Standley",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "1",
      "id": "304",
      "level_id": "2",
      "title": "Middle Schools"
    },
    {
      "school_id": "431",
      "name": "Muir",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "1",
      "id": "258",
      "level_id": "3",
      "title": "High Schools"
    },
    {
      "school_id": "454",
      "name": "Preuss",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "1",
      "id": "281",
      "level_id": "3",
      "title": "High Schools"
    },
    {
      "school_id": "466",
      "name": "San Diego",
      "phone": "",
      "email": "",
      "address": "",
      "information": "",
      "image": "",
      "calendar_id": "1",
      "id": "292",
      "level_id": "3",
      "title": "High Schools"
    }
  ]
}

Answer 1

String title = object.getString("title");
if(title.equals("Elementary Schools"))
{
   //do your code
}

您也可以使用title.equalsIgnoreCase("Elementary Schools");

Answer 2

DO＃

if（object.getString（“title”）。equalsIgnoreCase（“Elementary Schools”）

相反＃

if（object.getString（“title”）==“Elementary Schools”）

Answer 3

JUst do 

String title = object.getString("title");
if(title.equals("Elementary Schools"))
{
// Do you stuff
}

you can also use
if (object.getString("title").equalsIgnoreCase("Elementary Schools")
{`enter code here
// do you stuff
}

//我刚刚在你的if语句中删除了那个（;）并测试了你的代码。

过滤json数组并在listview中显示

3 个答案: