我正在将json值解析为gridView，但不知何故它在gridView中没有显示任何值，我在json代码中感到困惑，因为我觉得我在这段代码中遗漏了一些东西......请检查：
private void getData() {
//Showing a progress dialog while our app fetches the data from url
final ProgressDialog loading = ProgressDialog.show(this, "Please wait...", "Fetching data...", false, false);
String DATA_URL = "http://........nList";
StringRequest stringRequest = new StringRequest(Request.Method.POST, DATA_URL,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
//Toast.makeText(PMPigeonListingActivity.this,response,Toast.LENGTH_LONG).show();
loading.dismiss();
try {
JSONArray json = new JSONArray(response);
for (int i = 0; i < json.length(); i++) {
//Creating a json object of the current index
JSONObject obj = null;
try {
//getting json object from current index
obj = json.getJSONObject(i);
//getting image url and title from json object
pid.add(obj.getInt(String.valueOf(TAG_PID)));
pname.add(obj.getString(TAG_PNAME));
pdetails.add(obj.getString(TAG_PDETAILS));
pmobile.add(obj.getString(TAG_MOBILE));
pemail.add(obj.getString(TAG_EMAIL));
images.add(obj.getString(TAG_IMAGE_URL));
names.add(obj.getString(TAG_NAME));
} catch (JSONException e) {
e.printStackTrace();
}
}
} catch (JSONException e) {
e.printStackTrace();
}
//Creating GridViewAdapter Object
PMPigeonListAdapter pmpigeonlistadapter = new PMPigeonListAdapter(getApplicationContext(), images, names, pid, pdetails, pmobile, pemail, pname);
//Adding adapter to gridview
pmpigeonlistadapter.notifyDataSetChanged();
gridView.setAdapter(pmpigeonlistadapter);
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
//Toast.makeText(PMPigeonListingActivity.this, error.toString(), Toast.LENGTH_LONG).show();
}
}) {
@Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<String, String>();
params.put("country", PostCountry);
params.put("strain", PostStrain);
params.put("distance", PostDistance);
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}
这是我的json输出：
{
"status_code": 200,
"status": "OK",
"status_message": "Success",
"pigeon_list": [
{
"id": "1",
"pigeon_name": "sofiee",
"auth_token": "58809c7129a5a",
"country_code": "AE",
"strain_id": "75",
"distance": "3",
"pigeon_price": "50.00",
"pigeon_details": "One of the best ",
"image": "http:.98a8ac5.jpeg",
"pedigree_image": "http://...1.jpeg",...
"status": "",
"created": "2017-01-19 16:52:14",
"updated": "0000-00-00 00:00:00",
"strain_name": "Janssen/gaston wowers ",
"usr_mobile": "+971/505040009",
"usr_image": "http://....19a.jpeg",
"usr_email": "...edo@gmail.com"
},
我也会在吐司中得到回应，只有json问题才会出现......
这是php代码：
public function searchPigeonList()
{
$data = (array)$this->request->input('json_decode');
$returnArr = $this->resp_arr;
$returnArr['pigeon_list'] = array();
$conn = ConnectionManager::get('default');
$query = "SELECT `pg`.*,`ps`.name as strain_name,`us`.mobile as usr_mobile,`us`.image as usr_image,`us`.email as usr_email FROM
`pigeons` as `pg` INNER JOIN `users` as `us` ON `pg`.`auth_token` = `us`.`uniq_id` INNER JOIN `pigeon_strain` as `ps` ON `ps`.`id` = `pg`.`strain_id` ";
// $query .= "WHERE `pg`.`country_code` = '".$data['country_code']."' ";
$cnt_cd = $data['country_code'];
$str_id = $data['strain_id'];
$dst = $data['distance'];
$conditions = array();
if($cnt_cd !="") {
$conditions[] = "`pg`.country_code='$cnt_cd'";
}
if($str_id !="") {
$conditions[] = "`pg`.strain_id='$str_id'";
}
if($dst !="") {
$conditions[] = "`pg`.distance='$dst'";
}
if (count($conditions) > 0) {
$query .= " WHERE " . implode(' AND ', $conditions);
$query .= " AND `pg`.status='approved'";
}
//echo $query;exit;
$stmt = $conn->execute($query);
$returnArr['status_code'] = 200;
$returnArr['status'] = "OK";
$returnArr['status_message'] = "Success";
$returnArr['pigeon_list'] = $stmt ->fetchAll('assoc');
if ($this->request->is('post')) {
echo json_encode($returnArr);
exit;
}
}
答案 0 :(得分：1)
try {
JSONArray json = new JSONObject(response).getJSONArray("pigeon_list");
for (int i = 0; i < json.length(); i++) {
JSONObject obj = null;
try {
obj = json.getJSONObject(i);
pid.add(obj.getInt("id"));
pname.add(obj.getString("pigeon_name"));
pdetails.add(obj.getString("pigeon_details"));
pmobile.add(obj.getString("usr_mobile"));
pemail.add(obj.getString("usr_email"));
images.add(obj.getString("usr_image"));
names.add(obj.getString("pigeon_name"));
} catch (JSONException e) {
e.printStackTrace();
}
}
}catch(JSONException je){
je.printStackTrace();
}catch(Exception e){
e.printStackTrace();
}
尝试替换
答案 1 :(得分：0)
试试这个。
public void onResponse(String response) {
//Toast.makeText(PMPigeonListingActivity.this,response,Toast.LENGTH_LONG).show();
loading.dismiss();
try {
JSONObject responseObject=new JSONObject(response);
JSONArray json = responseObject.getJSONArray("pigeon_list");
for (int i = 0; i < json.length(); i++) {
//Creating a json object of the current index
JSONObject obj = null;
try {
//getting json object from current index
obj = json.getJSONObject(i);
//getting image url and title from json object
pid.add(obj.getInt(String.valueOf(TAG_PID)));
pname.add(obj.getString(TAG_PNAME));
pdetails.add(obj.getString(TAG_PDETAILS));
pmobile.add(obj.getString(TAG_MOBILE));
pemail.add(obj.getString(TAG_EMAIL));
images.add(obj.getString(TAG_IMAGE_URL));
names.add(obj.getString(TAG_NAME));
} catch (JSONException e) {
e.printStackTrace();
}
}
} catch (JSONException e) {
e.printStackTrace();
}
//Creating GridViewAdapter Object
PMPigeonListAdapter pmpigeonlistadapter = new PMPigeonListAdapter(getApplicationContext(), images, names, pid, pdetails, pmobile, pemail, pname);
//Adding adapter to gridview
pmpigeonlistadapter.notifyDataSetChanged();
gridView.setAdapter(pmpigeonlistadapter);
}