我的json解析器为jsonarry只是得到第一个元素
我有解析器json数组和解析器函数,我在列表适配器中使用它,然后适配器由recyclerview使用。它给我的实际长度,但只有而其他人返回NULL我的json解析器为jsonarry只是得到第一个元素
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();
}
}
数组的第一个元素充满了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"
}]
}
和这张截图的名单 enter image description here
替换该行
jo = userss.getJSONObject(4);
本
jo = userss.getJSONObject(i);
对不起,我只是做了这个测试目的,但这是实际的代码 –
可以分享你的JSON? –
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");
}
对不起,我只是做了这个测试目的,但这是实际的代码 –
张贴你的json ... – user2025187
我被接收,这不是由jsonarray
item_place[i] = jo.getString("place")
与我们的代码的问题是使用硬编码值4
jo = userss.getJSONObject(4);
insted的这种发送的参数使用
jo = userss.getJSONObject(i);
每一个时间,如果你使用这种类型的分析它可能会导致空指针异常你解析指数4 JSONObject的信息
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();) {
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");
i++;
}
} catch (JSONException e) {
e.printStackTrace();
}
}
您可以分析上述JSON作为如下
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");
}
}
}
}
你试图改变你的循环为 “for(int i = 0;我
lal
更改'jo = userss.getJSONObject(4);'to'jo = userss.getJSONObject(i);' –
对不起,我刚刚这是测试的目的,但这是实际代码 –