Android Volley JSON -Daten nicht sammeln ⇐ Java

[Anonymous]

Ich benutze Volley, um JSON -Daten zu holen, aber es scheint nicht zu funktionieren. Der Code ist total für mich.
Android -Code: < /p>

Code: Select all

public void search() {

final String search_string = et_Search.getText().toString();

PD.setMessage("Searching: " + search_string);

PD.show();

String search_url = "";

StringRequest postRequest = new StringRequest(Request.Method.POST, search_url,
new Response.Listener() {
@Override
public void onResponse(String response) {
try {
JSONObject jsonResponse = new JSONObject(response);

int success = jsonResponse.getInt("success");
String message = jsonResponse.getString("message");

JSONArray ja = jsonResponse.getJSONArray("restaurants");

if (ja != null) {

for (int i = 0; i < ja.length(); i++) {

JSONObject jsonobject = ja.getJSONObject(i);
HashMap item = new HashMap();
item.put(TITLE, jsonobject.getString(TITLE));
item.put(LOCATION, jsonobject.getString(LOCATION));

List.add(item);
} // for loop ends

String[] from = {TITLE, LOCATION};
int[] to = {R.id.item_name, R.id.item_location};

adapter = new SimpleAdapter(
getActivity().getApplicationContext(), List,
R.layout.list_items, from, to);

listView.setAdapter(adapter);

}else{
Toast.makeText(getActivity().getApplicationContext(), message, Toast.LENGTH_SHORT).show();
}

PD.dismiss();

} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
PD.dismiss();
Toast.makeText(getActivity().getApplicationContext(),
"Failed, Check Your Connection", Toast.LENGTH_SHORT).show();
}
}
) {
@Override
protected Map getParams() {
Map params = new HashMap();
// the POST parameters:
params.put("search_string", search_string);
return params;
}
};

// Adding request to request queue
Volley.newRequestQueue(getActivity()).add(postRequest);
}
< /code>

Jetzt ist der Server -Nebencode: Es holt Daten von MySQL, JSON -Codierung funktioniert völlig einwandfrei ... < /p>

    $search_string = $_POST["search_string"];

// include db connect class
require_once __DIR__ . '/db_connect.php';

// connecting to db
$db = new DB_CONNECT();

// get all restaurants from products table
$result = mysql_query("SELECT T1.name, T2.address FROM tbl_restaurant T1 INNER JOIN tbl_information T2 ON T1.restaurant_id = T2.restaurant_id WHERE T1.name LIKE '%$search_string%'") or die(mysql_error());

// check for empty result
if (mysql_num_rows($result) > 0) {
// looping through all results
// restaurants node
$response["restaurants"] = array();

while ($row = mysql_fetch_array($result)) {
// temp user array
$rest_array = array();

$rest_array["name"] = $row["name"];
$rest_array["address"] = $row["address"];

// push single restaurant into final response array
array_push($response["restaurants"], $rest_array);
}
// success
$response["success"] = 1;

// echoing JSON response
echo json_encode($response);