Develop Reference

There is no applicable constructor? Error appears on POST method in volley

I am making registration activity in android with volley but i get some error in post method please help
private void registerUser(final String name, final String email,
final String password) {
// Tag used to cancel the request
String tag_string_req = "req_register";
pDialog.setMessage("Registering ...");
showDialog();
StringRequest strReq = new StringRequest(Method.POST,
AppConfig.URL_REGISTER, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d(TAG, "Register Response: " + response.toString());
hideDialog();
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
if (!error) {
// User successfully stored in MySQL
// Now store the user in sqlite
String uid = jObj.getString("uid");
JSONObject user = jObj.getJSONObject("user");
String name = user.getString("name");
String email = user.getString("email");
String created_at = user
.getString("created_at");
// Inserting row in users table
db.addUser(name, email, uid, created_at);
Toast.makeText(getApplicationContext(), "User successfully registered. Try login now!", Toast.LENGTH_LONG).show();
// Launch login activity
Intent intent = new Intent(
RegisterActivity.this,
LoginActivity.class);
startActivity(intent);
finish();
} else {
// Error occurred in registration. Get the error
// message
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(),
errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Registration Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
}) {
#Override
protected Map<String, String> getParams() {
// Posting params to register url
Map<String, String> params = new HashMap<String, String>();
params.put("name", name);
params.put("email", email);
params.put("password", password);
return params;
}
};
// Adding request to request queue
AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}
I am using volley:library-aar:1.0.0
And AppConfig.java
public class AppConfig {
public static String URL_REGISTER = "";
}
Error is
There is no applicable constructor to '(int.java.lang.string, com.andro.login.RegisterActivity.(anonymous), com.andro.login.RegisterActivity.(anonymous))'
Any solution for this prob?

app returning empty Toast

i am getting an empty Toast as response when i try to register a user to my sql database and no useful error hint is thrown in the logcat.
please what could possibly be the cause of this ?
registerProcess
private void registerProcess(final String name, final String email, final String password) {
// Tag used to cancel the request
String tag_string_req = "req_register";
pDialog.setMessage("Registering ...");
showDialog();
StringRequest strReq = new StringRequest(Request.Method.POST,
Functions.REGISTER_URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d(TAG, "Register Response: " + response);
hideDialog();
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
if (!error) {
Functions logout = new Functions();
logout.logoutUser(getApplicationContext());
Bundle b = new Bundle();
b.putString("email", email);
Intent i = new Intent(RegisterActivity.this, EmailVerify.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i.putExtras(b);
startActivity(i);
pDialog.dismiss();
finish();
} else {
// Error occurred in registration. Get the error
// message
String errorMsg = jObj.getString("message");
Toast.makeText(getApplicationContext(),errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Registration Error: " + error.getMessage());
Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
}) {
#Override
protected Map<String, String> getParams() {
// Posting params to register url
Map<String, String> params = new HashMap<String, String>();
params.put("name", name);
params.put("email", email);
params.put("password", password);
return params;
}
};
// Adding request to request queue
MyApplication.getInstance().addToRequestQueue(strReq, tag_string_req);
}
private void showDialog() {
if (!pDialog.isShowing())
pDialog.show();
}
private void hideDialog() {
if (pDialog.isShowing())
pDialog.dismiss();
}
}
web service
/**
* Adding new user to mysql database
* returns user details
*/
public function storeUser($fname, $lname, $email, $uname, $password) {
$uuid = uniqid('', true);
$hash = $this->hashSSHA($password);
$encrypted_password = $hash["encrypted"]; // encrypted password
$salt = $hash["salt"]; // salt
$result = mysql_query("INSERT INTO users(unique_id, firstname, lastname, email, username, encrypted_password, salt, created_at) VALUES('$uuid', '$fname', '$lname', '$email', '$uname', '$encrypted_password', '$salt', NOW())");
// check for successful store
if ($result) {
// get user details
$uid = mysql_insert_id(); // last inserted id
$result = mysql_query("SELECT * FROM users WHERE uid = $uid");
// return user details
return mysql_fetch_array($result);
} else {
return false;
}
}

There seems to be no error in the code, as far as I can see.
You should check the response you get with curl and see, what is returned.

to get the response from your web service you don't need JSON since you're doing a POST request by Volley. Your toast is empty because simply you're interpreting the response wrong and the objects like this one String errorMsg = jObj.getString("message"); will be empty.
To get the response you should do like this :
if (response.equalsIgnoreCase("yourResponseFromTheWebService")) {
...
Toast
} else if (response.equalsIgnoreCase("OtherPossibleResponse")){
....
Toast
} else{
....
Toast
}
EDIT :
I managed to spot two things in your web service code.
1- why are you trying to get informations from the server of the same user when you just sent them from your app. That doesn't make sense. You should attach your data as extra to your intent as you did with the email.
2- Volley expects a String type response and you giving him different formats at the same time.
So this a modified version of your code :
Web service :
public function storeUser($fname, $lname, $email, $uname, $password) {
$uuid = uniqid('', true);
$hash = $this->hashSSHA($password);
$encrypted_password = $hash["encrypted"]; // encrypted password
$salt = $hash["salt"]; // salt
$result = mysql_query("INSERT INTO users(unique_id, firstname, lastname, email, username, encrypted_password, salt, created_at) VALUES('$uuid', '$fname', '$lname', '$email', '$uname', '$encrypted_password', '$salt', NOW())");
// check for successful store
if ($result) {
echo "successful";
} else {
echo "notsuccessful";
}
}
Android
private void registerProcess(final String name, final String email, final String password) {
// Tag used to cancel the request
String tag_string_req = "req_register";
pDialog.setMessage("Registering ...");
showDialog();
StringRequest strReq = new StringRequest(Request.Method.POST,
Functions.REGISTER_URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d(TAG, "Register Response: " + response);
hideDialog();
if (response.equalsIgnoreCase("successful")) {
Functions logout = new Functions();
logout.logoutUser(getApplicationContext());
Bundle b = new Bundle();
//add other informations you need like name ect..
b.putString("email", email);
Intent i = new Intent(RegisterActivity.this, EmailVerify.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i.putExtras(b);
startActivity(i);
pDialog.dismiss();
finish();
} else if(response.equalsIgnoreCase("notsuccessful")) {
Toast.makeText(getApplicationContext(),"new user wasn't registered successfully", Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Registration Error: " + error.getMessage());
Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
}) {
#Override
protected Map<String, String> getParams() {
// Posting params to register url
Map<String, String> params = new HashMap<String, String>();
params.put("name", name);
params.put("email", email);
params.put("password", password);
return params;
}
};
// Adding request to request queue
MyApplication.getInstance().addToRequestQueue(strReq, tag_string_req);
}
private void showDialog() {
if (!pDialog.isShowing())
pDialog.show();
}
private void hideDialog() {
if (pDialog.isShowing())
pDialog.dismiss();
}
}
NOTE :
if you wanna know the error from your Mysql request don't show it on your app, just check it in your browser.
I hope this works for you

Get Org.json.JSONException:Value array(2) of type java.lang.String can not be converted to JSONObject

In my android app, I want to insert data from database using php script. Php script is there , data should be successfully fetched from database and insert into database but in android side , getting error value array(2) of type java.lang.String .
function.php
public function StoreListInfo($list_name,$list_title)
{
$stmt = $this->conn->prepare("INSERT INTO ibeSaveList(list_name,list_title) VALUES(?,?)");
$stmt->bind_param("ss", $list_name, $list_title);
$result = $stmt->execute();
$stmt->close();
if($result)
{
$stmt = $this->conn->prepare("SELECT list_name,list_title FROM ibeSaveList WHERE list_title = ?");
$stmt->bind_param("s",$list_title);
$stmt->execute();
$stmt->bind_result($token2,$token3);
while( $stmt->fetch() )
{
$user["list_name"]=$token2;
$user["list_title"]=$token3;
}
$stmt->close();
return $user;
}
else
{
return false;
}
}
StoreListInfo() which is called in web service.php
WebService.php
<?php
require_once 'update_user_info.php';
$db = new update_user_info();
// json response array
$response = array("error" => FALSE);
var_dump($_POST);
if (isset($_POST['list_name']) && isset($_POST['list_title'])) {
// receiving the post params
$list_name = $_POST['list_name'];
$list_title = $_POST['list_title'];
// create a new user
$user = $db->StoreListInfo($list_name,$list_title);
if ($user) {
// user stored successfully
$response["error"] = FALSE;
$response["user"]["list_name"] = $user["list_name"];
$response["user"]["list_title"] = $user["list_title"];
echo json_encode($response);
} else {
// user failed to store
$response["error"] = TRUE;
$response["error_msg"] = "Unknown error occurred in registration!";
echo json_encode($response);
}
} else {
$response["error"] = TRUE;
$response["error_msg"] = "Required parameters (listname,listtitle) is missing!";
echo json_encode($response);
}
?>
list.java
private void createListUser(final String list_name, final String list_title) {
// Tag used to cancel the request
String cancel_req_tag = "createlist";
progressDialog.setMessage("Adding you ...");
showDialog();
StringRequest strReq = new StringRequest(Request.Method.POST,
URL_FOR_LIST, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d(TAG, "CreateList Response: " + response.toString());
hideDialog();
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
// boolean status= jObj.getBoolean("status");
if (!error) {
Intent intent = new Intent(getActivity(),
EventDetailActivity.class);
startActivity(intent);
} else {
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(),
errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "List Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
}) {
#Override
protected Map<String, String> getParams() {
// Posting params to register url
Map<String, String> params = new HashMap<String, String>();
params.put("list_name", list_name);
params.put("list_title", list_title);
return params;
}
};
// Adding request to request queue
AppSingleton.getInstance(getApplicationContext()).addToRequestQueue(strReq, cancel_req_tag);
}
In android output

The response that you are getting at android side doesn't seem to be valid. The response should just be this: {"error":false,"user":{"list_name":"test","list_title":"test"}}.
The response you are getting is this:
array(2) {
["list_name"] =>
string(4) "test"
["list_title"] =>
string(4) "test"
}
{"error":false,"user":{"list_name":"test","list_title":"test"}}
The response you are getting contains some more information just before the actual response as you can see in the logcat. That means you have some issue on the php side.
This should not be there:
array(2) {
["list_name"] =>
string(4) "test"
["list_title"] =>
string(4) "test"
}
Also you should set the content type header before doing echo
header('Content-Type: application/json');
Check this : Returning JSON from a PHP Script

Android Volley error in POST request.

I have a problem with my Android code. I use volley lib to make http requests. In order to login into my app, I use the code below:
private void checkLogin(final String email_string, final String password_string) {
String tag_string_req = "req_login";
pDialog.setMessage("Logging in ...");
showDialog();
StringRequest strReq = new StringRequest(Request.Method.POST, AppConfig.URL_LOGIN, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d(TAG, "Login Response: " + response.toString());
hideDialog();
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
if (!error) {
session.setLogin(true);
/*
String uid = jObj.getString("uid");
JSONObject user = jObj.getJSONObject("user");
String name = user.getString("name");
String email = user.getString("email");
String created_at = user.getString("created_at");
db.addUser(name, email, uid, created_at);
*/
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
} else {
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(), errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Json error: " + e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Login Error: " + error.getMessage());
Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
}) {
#Override
public String getBodyContentType() {
return "application/x-www-form-urlencoded; charset=utf-8";
}
/*
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
HashMap<String, String> headers = new HashMap<>();
headers.put("Accept-Charset:", "charset=utf-8");
headers.put("Content-type", "application/x-www-form-urlencoded");
return headers;
}
*/
#Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<>();
params.put("email", email_string);
params.put("password", password_string);
return params;
}
};
int socketTimeout = 10000;
RetryPolicy policy = new DefaultRetryPolicy(socketTimeout, 1, 1);
strReq.setRetryPolicy(policy);
AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}
My API for logging in is the below piece of code:
$app->post('/login', function() use ($app) {
// check for required params
verifyRequiredParams(array('email', 'password'));
// reading post params
$email = $app->request()->post('email');
$password = $app->request()->post('password');
$response = array();
$db = new DbHandler();
// check for correct email and password
if ($db->checkLogin($email, $password)) {
// get the user by email
$user = $db->getUserByEmail($email);
if ($user != NULL) {
$response["error"] = false;
$response['name'] = $user['name'];
$response['email'] = $user['email'];
$response['apiKey'] = $user['api_key'];
$response['createdAt'] = $user['created_at'];
} else {
// unknown error occurred
$response['error'] = true;
$response['message'] = "An error occurred. Please try again";
}
} else {
// user credentials are wrong
$response['error'] = true;
$response['message'] = 'Login failed. Incorrect credentials';
}
echoRespnse(200, $response);
});
public function checkLogin($email, $password) {
// fetching user by email
$stmt = $this->conn->prepare("SELECT password_hash FROM users WHERE email = ?");
$stmt->bind_param("s", $email);
$stmt->execute();
$stmt->bind_result($password_hash);
$stmt->store_result();
if ($stmt->num_rows > 0) {
// Found user with the email
// Now verify the password
$stmt->fetch();
$stmt->close();
if (PassHash::check_password($password_hash, $password)) {
// User password is correct
return TRUE;
} else {
// user password is incorrect
return FALSE;
}
} else {
$stmt->close();
// user not existed with the email
return FALSE;
}
}
When I try and use postman to check my API, and POST the params in the URL, I get the correct response from my API. Therefore, I think there is no problem with it. However, when I try my Android code, it always returns me incorrect credentials. I am sure I've added the correct params. I think the problem is somewhere in my headers. Do you have any suggestions that could fix it?

Why is JSONObject's getBoolean always returning false when using Android volley

I am using android volley to perform some network request to a RESTful API. When I test the API locally using postman it returns the expected value of 'true'. It also returns the same value of 'true' when I use AsyncTask to fetch the boolean result from the JSON object returned. However, when I use volley to do the same operation the JSON response returned is always 'false' even when the value returned is actually true.
This is my code for the RESTful API.
$app->post('/login', function () use ($app) {
// reading post params
$email = $app->request()->post('email');
$password = $app->request()->post('password');
$response = array();
//$db = new DbHandler ();
// check for correct email and password
if (true) {
// get the user by email
//$user = $db->getUserByEmail($email);
$response ['error'] = true;
$response ['message'] = 'Login failed. Incorrect credentials';
} else {
// user credentials are wrong
$response ["error"] = false;
$response ['message'] = "Login Successful";
}
echoRespnse(200, $response);
});
And this is the value returned when I run it using postman
This is my volley operation
public class LoginActivity extends AppCompatActivity {
private Button login;
private EditText email, password;
private boolean error;
private String message;
#Override
public void onClick(View v) {
final RegisterInBackground registerGCMID = new RegisterInBackground();
//registerGCMID.execute();
HashMap<String, String> params = new HashMap<String, String>();
params.put("email", email.getText().toString());
params.put("password", password.getText().toString());
RequestQueue requestQueue = VolleySingleton.getInstance().getRequestQueue();
JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, ApplicationConstants.url_sign_in, new JSONObject
(params), new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
error = response.getBoolean(TAG_ERROR);
message = response.getString(TAG_MESSAGE);
Toast.makeText(LoginActivity.this, error + " value of error", Toast.LENGTH_LONG).show();
} catch (JSONException e) {
e.printStackTrace();
}
Toast.makeText(LoginActivity.this, message, Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
//Toast.makeText(LoginActivity.this, error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
requestQueue.add(request);
if (!error) { //when it reaches here the error changes from true to false
//Toast.makeText(LoginActivity.this, error + "", Toast.LENGTH_SHORT).show();
Intent i = new Intent(LoginActivity.this, SportSelection.class);
startActivity(i);
finish();
}
However it works when i do the EXACT same thing using AsyncTask
class RegisterInBackground extends AsyncTask<String, String, String> {
JSONObject json;
//boolean error;
String message, userEmail, accountType;
#Override
protected String doInBackground(String... args) {
Intent i;
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("email", email.getText().toString()));
params.add(new BasicNameValuePair("password", password.getText().toString()));
json = jsonParser.makeHttpRequest(ApplicationConstants.url_sign_in, "POST", params);
// check log cat for response
//Log.d("Create Response", json.toString());
try {
error = json.getBoolean(TAG_ERROR);
message = json.getString(TAG_MESSAGE);
if (!error) {
i = new Intent(LoginActivity.this.getApplicationContext(),
SportSelection.class);
startActivity(i);
LoginActivity.this.finish();
//Log.d("Message is", message);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
What is the value of error being changed to false after it has been assigned a value of true?