我有解析器函数,解析json数组并返回我在列表适配器中使用它的数组,然后适配器由recyclerview使用。它给出了实际的长度,但只填充了数组的第一个元素其他人返回NULL
这是我的代码
public void parsee_item() {
JSONObject jsonObject = null;
try {
jsonObject = new JSONObject(json);
final JSONArray userss = jsonObject.getJSONArray(JSON_ARRAY);
item_id = new String[userss.length()];
item_owner = new String[userss.length()];
item_images = new String[userss.length()];
item_names = new String[userss.length()];
item_price = new String[userss.length()];
item_place = new String[userss.length()];
JSONObject jo = null;
for (int i = 0; i < userss.length();i++) {
jo = userss.getJSONObject(i);
Log.d("alrsp", jo.toString());
item_id[i] = jo.getString(KEY_ID);
item_owner[i] = jo.getString(KEY_OWNER);
item_images[i] = jo.getString(KEY_IMAGE);
item_names[i] = jo.getString(KEY_NAME);
item_price[i] = jo.getString(KEY_PRICE);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
json是
{
"result": [{
"item_id": "10",
"owner": "user",
"item_type_id": "1",
"url1": "http:\/\/localhost:8080\/market\/items\/14.1.png",
"name": "jc",
"price": "76"
}, {
"item_id": "12",
"owner": "user",
"item_type_id": "1",
"url1": " http:\/\/localhost:8080\/market\/items\/14.1.png",
"name": "nzbsbsb",
"price": "0"
}, {
"item_id": "13",
"owner": "user",
"item_type_id": "1",
"url1": " http:\/\/localhost:8080\/market\/items\/14.1.png",
"name": "uygf",
"price": "0"
}]
}
以及此列表的屏幕截图 enter image description here
答案 0 :(得分:2)
答案 1 :(得分:1)
答案 2 :(得分:0)
替换此行
jo = userss.getJSONObject(4);
使用此
jo = userss.getJSONObject(i);
答案 3 :(得分:0)
JSONObject jo = null;
for (int i = 0; i < userss.length();i++) {
jo = userss.getJSONObject(i);
Log.d("alrsp", jo.toString());
item_id[i] = jo.getString(KEY_ID);
item_owner[i] = jo.getString(KEY_OWNER);
item_images[i] = jo.getString(KEY_IMAGE);
item_names[i] = jo.getString(KEY_NAME);
item_price[i] = jo.getString(KEY_PRICE);
item_place[i] = jo.getString("place");
}
答案 4 :(得分:0)
我收到的是一个没有被jsonarray发送的参数
item_place[i] = jo.getString("place")
答案 5 :(得分:0)
你的代码问题是你使用硬编码值4
{visible- true}
注意这种用法
jo = userss.getJSONObject(4);
每次解析索引4 jsonObject信息
jo = userss.getJSONObject(i);
}
如果使用这种类型的解析,则可能导致空指针异常
答案 6 :(得分:0)
您可以按如下方式解析JSON以上
private void jsonParse(String response) throws JSONException {
JSONObject jsonObject = new JSONObject(response);
JSONArray jsonArray = jsonObject.getJSONArray("result");
if (jsonArray != null && jsonArray.length() > 0) {
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject object = jsonArray.getJSONObject(i);
if (object != null) {
String itemId = object.getString("item_id");
String owner = object.getString("owner");
String item_type_id = object.getString("item_type_id");
String url1 = object.getString("url1");
String name = object.getString("name");
String price = object.getString("price");
}
}
}
}