Develop Reference

Something went wrong, Android Studio + Volley

i'm very beginner in this problem.
i following the tutorials from youtube make a database for user register, i use localhost and put the php file into htdocs and it's succes but when i tried to put the php file into 000webhost file manager. the result is 'something went wrong' it should be 'Succesfully Registered'. i dont know what should i do because there's no error in logcat. i'm sure there's no error in php file because i've matched it with the real source code.
Example Error Image
Thank you in advance.
here is my code
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import java.util.HashMap;
import java.util.Map;
public class Register extends AppCompatActivity {
private EditText etName, etEmail, etPassword, etReenterPassword;
private TextView tvStatus;
private String URL = "https://db4image.000webhostapp.com/login/register.php";
private String name, email, password, reenterPassword;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
etName = findViewById(R.id.name);
etEmail = findViewById(R.id.email);
etPassword = findViewById(R.id.password);
etReenterPassword = findViewById(R.id.repass);
tvStatus = findViewById(R.id.tvStatus);
name = email = password = reenterPassword = "";
}
public void daftarCok (View view) {
name = etName.getText().toString().trim();
email = etEmail.getText().toString().trim();
password = etPassword.getText().toString().trim();
reenterPassword = etReenterPassword.getText().toString().trim();
if(!password.equals(reenterPassword)){
Toast.makeText(this, "Password Mismatch", Toast.LENGTH_SHORT).show();
}
else if(!name.equals("") && !email.equals("") && !password.equals("")){
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
if (response.equals("success")) {
tvStatus.setText("Successfully registered.");
Intent inten = new Intent(Register.this, MainActivity.class);
startActivity(inten);
}
else if (response.equals("failure")) {
tvStatus.setText("Something went wrong!");
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(), error.toString().trim(), Toast.LENGTH_SHORT).show();
}
}){
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> data = new HashMap<>();
data.put("name", name);
data.put("email", email);
data.put("password", password);
return data;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
requestQueue.add(stringRequest);
}
}
public void login(View view) {
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
finish();
}
}
This is my register.php
<?php
if(isset($_POST['name']) && isset($_POST['email']) && isset($_POST['password'])){
require_once "conn.php";
require_once "validate.php";
$name = validate($_POST['name']);
$email = validate($_POST['email']);
$password = validate($_POST['password']);
$sql = "INSERT INTO users VALUES ('', '$name', '$email', '" . md5($password) . "')";
if(!$conn->query($sql)){
echo "failure";
}else{
echo "success";
}
}
?>

Android app with xampp local database error connection

I have a local XAMPP and some erro happer when I try to register some account.. got this error showed down
I tried with HTTP also give me an error them I change to HTTPS, already put my IP but also give an error.
Would like to know why is this error happening and what should I do
error
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.readytogo">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".ProfileActivity" />
<activity android:name=".LoginActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".RegisterActivity"
android:theme="#style/AppThemeRegist" />
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="#style/AppTheme.NoActionBar" />
</application>
</manifest>
LoginActivity.java
package com.example.readytogo;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.Map;
public class LoginActivity extends AppCompatActivity {
private EditText email, password;
private Button btn_login;
private TextView link_regist;
private ProgressBar loading;
private static String URL_LOGIN = "http://127.0.0.1:8012/android_register_login/login.php";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
loading = findViewById(R.id.loading);
email = findViewById(R.id.email);
password = findViewById(R.id.password);
btn_login = findViewById(R.id.btn_login);
link_regist = findViewById(R.id.link_regist);
btn_login.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String mEmail = email.getText().toString().trim();
String mPass = password.getText().toString().trim();
if (!mEmail.isEmpty() || !mPass.isEmpty()) {
Login(mEmail, mPass);
} else {
email.setError("Please insert email");
password.setError("Please insert password");
}
}
});
link_regist.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(new Intent(LoginActivity.this, RegisterActivity.class));
}
});
}
private void Login(final String email, final String password) {
loading.setVisibility(View.VISIBLE);
btn_login.setVisibility(View.GONE);
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL_LOGIN,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject jsonObject = new JSONObject(response);
String success = jsonObject.getString("success");
JSONArray jsonArray = jsonObject.getJSONArray("login");
if (success.equals("1")){
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject object = jsonArray.getJSONObject(i);
String name = object.getString( "name").trim();
String email = object.getString("email").trim();
Toast.makeText(LoginActivity.this,
"Success Login. \n Your Name:"
+name+"\nYour Email : "
+email, Toast.LENGTH_SHORT)
.show();
loading.setVisibility(View.GONE);
}
}
} catch (JSONException e) {
e.printStackTrace();
loading.setVisibility(View.GONE);
btn_login.setVisibility(View.VISIBLE);
Toast.makeText(LoginActivity.this, "Error " +e.toString(), Toast.LENGTH_SHORT).show();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
loading.setVisibility(View.GONE);
btn_login.setVisibility(View.VISIBLE);
Toast.makeText(LoginActivity.this, "Error " +error.toString(), Toast.LENGTH_SHORT).show();
}
})
{
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<>();
params.put("email", email);
params.put("password", password);
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}
}
RegisterActivity.java
package com.example.readytogo;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.Toast;
import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.Map;
public class RegisterActivity extends AppCompatActivity {
//register
private EditText name, email, password, c_password;
private Button btn_regist;
private ProgressBar loading;
private static String URL_REGIST = "http://127.0.0.1:8012/android_register_login/register.php";
//register end
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
//register
loading = findViewById(R.id.loading);
name = findViewById(R.id.name);
email = findViewById(R.id.email);
password = findViewById(R.id.password);
c_password = findViewById(R.id.c_password);
btn_regist = findViewById(R.id.btn_regist);
btn_regist.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Regist();
}
});
//register end
}
private void Regist(){
loading.setVisibility(View.VISIBLE);
btn_regist.setVisibility(View.GONE);
final String name = this.name.getText().toString().trim();
final String email = this.email.getText().toString().trim();
final String password = this.password.getText().toString().trim();
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL_REGIST,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try{
JSONObject jsonObject = new JSONObject(response);
String success = jsonObject.getString("success");
if (success.equals(1)) {
Toast.makeText(RegisterActivity.this, "Register Success!", Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(RegisterActivity.this, "Register Error! " + e.toString(), Toast.LENGTH_SHORT).show();
loading.setVisibility(View.GONE);
btn_regist.setVisibility(View.VISIBLE);
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(RegisterActivity.this, "Register Error! " + error.toString(), Toast.LENGTH_SHORT).show();
loading.setVisibility(View.GONE);
btn_regist.setVisibility(View.VISIBLE);
}
})
{
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<>();
params.put("name", name);
params.put("email", email);
params.put("password", password);
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}
}
Can someone help me?
Really thank you

Android volley token changes every request

I want to get the results about imei adresses after my inquiry on the inquiry site. The site has token input during the query and I can get this token as follows. But when i run the second volley queue i soppose the token changes and the result doesn't come. How can I solve this problem. The site that i questioned the imei adress and my codes are below.
package com.myapp.query;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import android.os.Bundle;
import android.widget.Toast;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
import androidx.appcompat.app.AppCompatActivity;
public class imeiSorgulama extends AppCompatActivity {
StringRequest stringRequest;
RequestQueue queue;
String token, tag, value, tag2, value2, result;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_imei_sorgulama);
queue = Volley.newRequestQueue(this);
final String url = "https://www.turkiye.gov.tr/imei-sorgulama";
stringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
tag = "<input type=\"hidden\" name=\"token\" value=\"";
value = response.substring(response.indexOf(tag) + tag.length());
token = value.substring(0, value.indexOf("\""));
try {
token = URLEncoder.encode(token,"UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
imeiQuery();
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(imeiSorgulama.this, error+"", Toast.LENGTH_SHORT).show();
}
}
);
queue.add(stringRequest);
}
private void imeiQuery() {
final String url = "https://www.turkiye.gov.tr/imei-sorgulama?submit";
stringRequest = new StringRequest(Request.Method.POST, url,
new Response.Listener<String>()
{
#Override
public void onResponse(String response) {
tag2 = "<dl class=\"compact\">";
value2 = response.substring(response.indexOf(tag2) + tag2.length());
result = value2.substring(0, value2.indexOf("</dl>"));
Toast.makeText(imeiSorgulama.this, result+"", Toast.LENGTH_SHORT).show();
}
},
new Response.ErrorListener()
{
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(imeiSorgulama.this, error+"", Toast.LENGTH_SHORT).show();
}
}
) {
#Override
protected Map<String, String> getParams()
{
Map<String, String> params = new HashMap<String, String>();
params.put("txtImei", "545454545454545");
params.put("token=", token);
return params;
}
};
queue.add(stringRequest);
}
}

Run a piece of code only once in background whenever user login

Ia trying to get user locations whenever its login the application.I made a class and its working perfect seperately but when I embed it in my main project it didnt submit the location values in database.I want that whenever user login that class run for only once and submits its coordinates in database.
Here Is the code of my location class :
I want that when user login this class class run for once only all I want is to get user location when its loged in.
import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import java.util.HashMap;
import java.util.Map;
public class getposition extends AppCompatActivity {
String URL_LOGIN = "api"
Button btn;
TextView tv1,tv2;
LocationManager locationManager;
static final int REQUEST_LOCATION = 1;
String lg, lt , chk;
String lat_long;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_getposition);
btn = findViewById(R.id.send);
tv1 = findViewById(R.id.lang);
tv2 = findViewById(R.id.lat);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
chk = getLocation();
loadlocation();
if(chk != "false"){
String foo = chk;
String[] split = foo.split("_");
lt = split[0];
lg = split[1];
Toast.makeText(getApplicationContext(),chk,Toast.LENGTH_LONG).show();
}
}
private void loadlocation() {
final RequestQueue requestQueue = Volley.newRequestQueue(getposition.this);
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL_LOGIN, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
tv1.setText(response);
tv2.setText(response);
requestQueue.stop();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
tv1.setText("Something went wrong///");
error.printStackTrace();
requestQueue.stop();
}
})
{
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<>();
params.put("user_id","12" );
params.put("user_lat", lt);
params.put("user_lng", lg);
return params;
}
};
VolleySingleton.getInstance(getposition.this).addToRequestQueue(stringRequest);
}
public String getLocation() {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED)
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_LOCATION);
else {
Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
double latt = location.getLatitude();
double lng = location.getLongitude();
lat_long = latt + "_" + lng;
tv1.setText("Latitude: " + latt);
tv2.setText("Longitude: " + lng);
} else {
lat_long = "false";
tv1.setText("Unable to find correct location.");
tv2.setText("Unable to find correct location. ");
}
}
return lat_long;
}
}
This is my login class:
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Toast;
import com.vshine.neuron.riseshine.VolleySingleton;
import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.vshine.neuron.riseshine.MainActivity;
import com.vshine.neuron.riseshine.R;
import com.vshine.neuron.riseshine.getregistered;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.Map;
public class login extends AppCompatActivity {
Button login_button;
ImageButton GetRegistered;
EditText userName_edt, password_edt;
String user_name, password;
Context mctx;
String json_response;
String URL_LOGIN = "api"
public static final String PREFS_NAME = "MyPreferenceFiles";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
mctx = this;
initBasic();
initLogin();
}
private void initBasic() {
login_button = (Button) findViewById(R.id.login_button);
GetRegistered = (ImageButton) findViewById(R.id.register);
userName_edt = (EditText) findViewById(R.id.user_name);
password_edt = (EditText) findViewById(R.id.password);
}
private void initLogin() {
GetRegistered.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent= new Intent(login.this,getregistered.class);
startActivity(intent);
}
});
login_button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
user_name = userName_edt.getText().toString();
password = password_edt.getText().toString();
if (user_name.trim().equals("") || password.trim().equals("")) {
ShowToastMessage("Please enter the credentials properly");
}
else {
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL_LOGIN,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
//converting response to json object
JSONObject obj = new JSONObject(response);
//if no error in response
// json_response = j_obj.getString("message");
if (response!= null) {
// Toast.makeText(getApplicationContext(), obj.getString("message"), Toast.LENGTH_SHORT).show();
json_response = obj.getString("message");
// ShowToastMessage(json_response);
//getting the user from the response
JSONObject userJson = obj.getJSONObject("response");
//creating a new user object
String u_id = String.valueOf(userJson.getInt("id"));
// ShowToastMessage(u_id);
//storing the user in shared preferences
SharedPreferences.Editor editor = getSharedPreferences(PREFS_NAME, MODE_PRIVATE).edit();
editor.putString("User_id", u_id);
editor.commit();
finish();
startActivity(new Intent(getApplicationContext(), MainActivity.class));
} else {
Toast.makeText(getApplicationContext(), obj.getString("message"), Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_SHORT).show();
}
})
{
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<>();
params.put("user_name", user_name);
params.put("password", password);
return params;
}
};
VolleySingleton.getInstance(login.this).addToRequestQueue(stringRequest);
}
}
});
}
private void ShowToastMessage(String message) {
Toast.makeText(this, message, Toast.LENGTH_LONG).show();
}
}

Unable to get json data on emulator in android studio

I am using android studio ,mysql database and notepad++ for php files.
The database has a table named login and has 3 attributes:
id
firstname
lastname
all are of the type varchar.
When I try to execute this code of android and php I don't get any error and the code is executed successfully but the data from the database does not get displayed on the emulator.
*******************Android code************************
package com.example.digi.college;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.Map;
public class MainActivity extends AppCompatActivity {
EditText firstname, lastname, id;
Button insert, show;
TextView result;
RequestQueue requestQueue;
String inserturl = "http://192.168.1.104/android/register.php";
String displayurl = "http://192.168.1.104/android/display.php";
String hello="hello how are you";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
id = (EditText) findViewById(R.id.editText);
firstname = (EditText) findViewById(R.id.editText2);
lastname = (EditText) findViewById(R.id.editText3);
insert = (Button) findViewById(R.id.button);
show = (Button) findViewById(R.id.button2);
result = (TextView) findViewById(R.id.textView);
requestQueue = Volley.newRequestQueue(getApplicationContext());
show.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST,
displayurl, new Response.Listener<JSONObject>() {
public void onResponse(JSONObject response) {
try {
JSONArray students = response.getJSONArray("students");
for (int i = 0; i < students.length(); i++) {
JSONObject login = students.getJSONObject(i);
String id = login.getString("id");
String firstname = login.getString("firstname");
String lastname = login.getString("lastname");
result.append(id+" "+firstname+" "+lastname+"\n");
}
result.append("===\n");
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
public void onErrorResponse(VolleyError error) {
}
});
requestQueue.add(jsonObjectRequest);
}
});
insert.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
StringRequest request = new StringRequest(Request.Method.POST, inserturl, new Response.Listener<String>() {
#Override
public void onResponse(String s) {
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError volleyError) {
}
}){
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String,String> parameters = new HashMap<String, String>();
parameters.put("id",id.getText().toString());
parameters.put("firstname",firstname.getText().toString());
parameters.put("lastname",lastname.getText().toString());
return parameters;
}
};
requestQueue.add(request);
}
});
}
}
*****************Php Code for insert.php******************
<?php
if($_SERVER["REQUEST_METHOD"] == "POST")
{
$id=$_POST['id'];
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$db = mysql_connect("localhost", "root", "");
mysql_select_db("ntu", $db);
$sql = mysql_query("INSERT INTO login (id,firstname,lastname) VALUES ('$id','$firstname', '$lastname')");
mysql_close($db);
}
?>
*************Php code for display.php*************
<?php
$db = mysql_connect("localhost", "root", "");
mysql_select_db("ntu", $db);
$sql = mysql_query("SELECT * FROM login");
$a = array();
$index = 0;
while($row = mysql_fetch_assoc($sql))
{
$a[$index] = $row;
$index++;
}
echo json_encode(array("students"=>$a));
mysql_close($db);
?>

I think you have missed the put the internet permission in androidmanifeast.xml file give internet permission and check.