Issue
I need help to make login using Curl, I just tried make it but it always failed. do I need php file or no ? if yes, can you give me an example how to use it.
here is my url to make login using nik_baru and password
http://hrd.tvip.co.id/rest_server/api/login/index
And here is my code
package com.example.eis2;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
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 MainActivity extends AppCompatActivity {
EditText editTextnik_baru;
EditText editTextpassword;
Button buttonlogin;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editTextnik_baru = (EditText) findViewById(R.id.editTextnik_baru);
editTextpassword = (EditText) findViewById(R.id.editTextpassword);
buttonlogin = (Button) findViewById(R.id.buttonlogin);
buttonlogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(!editTextnik_baru.getText().equals("")){
sendLogin();
} else {
editTextnik_baru.setError("Please insert NIK");
editTextpassword.setError("Please insert password");
}
}
});
}
private void sendLogin() {
String url = "http://hrd.tvip.co.id/rest_server/api/login/index";
url += editTextnik_baru.getText();
final String nik_baru = editTextnik_baru.getText().toString().trim();
StringRequest loginRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONArray array = new JSONArray("data");
JSONObject json = array.getJSONObject(0);
String status = json.getString("nik_baru");
System.out.println("data "+ status);
// JSONObject json = getJSONObject("data");
if(status.equals(nik_baru)){
Log.d("tvip", "success");
Intent intent = new Intent(MainActivity.this, menu.class);
startActivity(intent);
finish();
}else{
Toast.makeText(getApplicationContext(), "Username & Password Salah", Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(),"Error", Toast.LENGTH_LONG).show();
}
}
){
@Override
protected Map<String, String> getParams(){
HashMap<String, String> params = new HashMap<>();
params.put("nik_baru", editTextnik_baru.getText().toString());
params.put("password", editTextpassword.getText().toString());
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(loginRequest);
}
}
and this is it's xml code
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00d0ff"
tools:context=".MainActivity">
<ImageView
android:id="@+id/logoeis"
android:layout_width="148dp"
android:layout_height="140dp"
android:layout_centerHorizontal="true"
android:layout_marginTop="90dp"
app:srcCompat="@drawable/logoeis" />
<ImageView
android:id="@+id/logoasa"
android:layout_width="38dp"
android:layout_height="43dp"
android:layout_below="@+id/logoeis"
android:layout_marginLeft="300dp"
android:layout_marginTop="-200dp"
app:srcCompat="@drawable/logoasa" />
<ImageView
android:id="@+id/logotvip"
android:layout_width="38dp"
android:layout_height="43dp"
android:layout_below="@+id/logoeis"
android:layout_marginLeft="250dp"
android:layout_marginTop="-200dp"
app:srcCompat="@drawable/logotvip" />
<EditText
android:id="@+id/editTextnik_baru"
android:layout_width="241dp"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_below="@+id/logoeis"
android:layout_centerHorizontal="true"
android:hint="NIK Baru"
android:inputType="text"
android:textColor="#000000"
android:selectAllOnFocus="true"/>
<EditText
android:id="@+id/editTextpassword"
android:layout_width="241dp"
android:layout_height="wrap_content"
android:layout_below="@+id/editTextnik_baru"
android:layout_centerHorizontal="true"
android:hint="Password"
android:textColor="#000000"
android:inputType="textPassword"
android:selectAllOnFocus="true"/>
<Button
android:id="@+id/buttonlogin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/editTextpassword"
android:layout_centerHorizontal="true"
android:text="Login"
android:layout_marginTop="15dp" />
<TextView
android:id="@+id/eis"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Employee Information System"
android:textSize="23dp"
android:layout_marginTop="12dp"
android:textColor="#000000"
android:layout_below="@+id/buttonlogin"
android:layout_centerHorizontal="true"/>
<TextView
android:id="@+id/version"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Version 1.0"
android:textSize="23dp"
android:layout_marginTop="12dp"
android:textColor="#000000"
android:layout_below="@+id/eis"
android:layout_centerHorizontal="true"/>
</RelativeLayout>
Can you guys solve this problem ?
Solution
This is just an example... the exact coding for your particular login system may be different.
The server login file PHP would be similar to this:
if (isset($_POST['username']) && $_POST['username'] != '') {
$loginPassword = $_POST['password'];
$username = $_POST['username'];
$sql = "SELECT `id`, `username`, `email`, `password`, `key` FROM `TABLE_NAME` WHERE `username`=:username";
$LoginRS_query = $conn->prepare($sql);
$LoginRS_query->bindValue(':username', $username, PDO::PARAM_STR);
$LoginRS_query->execute();
$LoginRS = $LoginRS_query->fetch(PDO::FETCH_ASSOC);
$totalRows = $LoginRS_query->rowCount();
if($totalRows > 0) {
$db_key = $LoginRS['key'];
$peppered = hash_hmac("sha256", $loginPassword, $db_key);
$db_pwd = $LoginRS['password'];
if(password_verify($peppered, $db_pwd)) {
$loginFoundUser = 'true';
} else {
$loginFoundUser = 'false';
}
}
if($loginFoundUser == 'true') {
$loginID = $LoginRS['id'];
$loginUserName = $LoginRS['username'];
$LoginRS_query->closeCursor();
echo "success";
$response = array('id' => $loginID, 'username' => $loginUserName);
echo json_encode($response);
} else {
$LoginRS_query->closeCursor();
echo "no user found";
}
} else {
echo "access failed";
}
Then in your activity file inside sendLogin() ...
public void onResponse(String response) {
if (response.contains("success")) {
String res = response.substring(response.indexOf("{"));
try {
JSONObject jsonObject = new JSONObject(res);
final String loginID = jsonObject.getString("id");
final String loginUser = jsonObject.getString("username");
Intent intent = new Intent(MainActivity.this, menu.class);
intent.putExtra("id", loginID); // added this line
intent.putExtra("username", loginUser); // added this line
startActivity(intent);
finish();
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Login Error " + e, Toast.LENGTH_LONG).show();
}
}else{
Toast.makeText(getApplicationContext(), "Username & Password Salah", Toast.LENGTH_LONG).show();
}
The intent.putExtra is only needed if you will need your username or ID elsewhere to perform other tasks
Answered By - Kuya