implement menu debit dan qris

app/src/main/AndroidManifest.xml

@@ -33,7 +33,6 @@
         <activity
             android:name=".PaymentActivity"
             android:exported="false" />
-        <activity android:name=".QrisResultActivity" />
         <activity
             android:name=".PinActivity"
             android:screenOrientation="portrait"
@@ -42,6 +41,10 @@
         <activity
             android:name=".ReceiptActivity"
             android:exported="false" />
+        <activity
+            android:name=".QrisActivity"
+            android:exported="false" />
+        <activity android:name=".QrisResultActivity" />
     </application>
 
 </manifest>

app/src/main/java/com/example/bdkipoc/MainActivity.java

@@ -86,11 +86,11 @@ public class MainActivity extends AppCompatActivity {
                 if (cardId == R.id.card_kartu_kredit) {
                     startActivity(new Intent(MainActivity.this, PaymentActivity.class));
                 } else if (cardId == R.id.card_kartu_debit) {
-                    Toast.makeText(this, "Kartu Debit Diklik", Toast.LENGTH_SHORT).show();
+                    startActivity(new Intent(MainActivity.this, PaymentActivity.class));
                 } else if (cardId == R.id.card_qris) {
-                    startActivity(new Intent(MainActivity.this, TransactionActivity.class));
+                    startActivity(new Intent(MainActivity.this, QrisActivity.class));
                 } else if (cardId == R.id.card_bantuan) {
-                    Toast.makeText(this, "Bantuan Diklik", Toast.LENGTH_SHORT).show();
+                    startActivity(new Intent(MainActivity.this, TransactionActivity.class));
                 } else if (cardId == R.id.card_info_toko) {
                     Toast.makeText(this, "Info Toko Diklik", Toast.LENGTH_SHORT).show();
                 } else {

app/src/main/java/com/example/bdkipoc/QrisActivity.java

@@ -0,0 +1,557 @@
+package com.example.bdkipoc;
+
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.util.Random;
+import java.util.UUID;
+
+public class QrisActivity extends AppCompatActivity {
+
+    private ProgressBar progressBar;
+    private Button initiatePaymentButton;
+    private Button simulatePaymentButton;
+    private ImageView qrCodeImageView;
+    private TextView statusTextView;
+    private EditText editTextAmount;
+    private TextView referenceIdTextView;
+    private View paymentDetailsLayout;
+    private View paymentSuccessLayout;
+    private Button returnToMainButton;
+
+    private String transactionId;
+    private String transactionUuid;
+    private String referenceId;
+    private int amount;
+    private JSONObject midtransResponse;
+
+    private static final String BACKEND_BASE = "https://be-edc.msvc.app";
+    private static final String MIDTRANS_CHARGE_URL = "https://api.sandbox.midtrans.com/v2/charge";
+    private static final String MIDTRANS_AUTH = "Basic U0ItTWlkLXNlcnZlci1JM2RJWXdIRzVuamVMeHJCMVZ5endWMUM="; // Replace with your actual key
+    private static final String WEBHOOK_URL = "https://be-edc.msvc.app/webhooks/midtrans";
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_qris);
+
+        // Set up the toolbar
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        if (getSupportActionBar() != null) {
+            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+            getSupportActionBar().setDisplayShowHomeEnabled(true);
+            getSupportActionBar().setTitle("QRIS Payment");
+        }
+
+        // Initialize views
+        progressBar = findViewById(R.id.progressBar);
+        initiatePaymentButton = findViewById(R.id.initiatePaymentButton);
+        simulatePaymentButton = findViewById(R.id.simulatePaymentButton);
+        qrCodeImageView = findViewById(R.id.qrCodeImageView);
+        statusTextView = findViewById(R.id.statusTextView);
+        editTextAmount = findViewById(R.id.editTextAmount);
+        referenceIdTextView = findViewById(R.id.referenceIdTextView);
+        paymentDetailsLayout = findViewById(R.id.paymentDetailsLayout);
+        paymentSuccessLayout = findViewById(R.id.paymentSuccessLayout);
+        returnToMainButton = findViewById(R.id.returnToMainButton);
+
+        // Generate a random amount between 100,000 and 999,999
+        amount = new Random().nextInt(900000) + 100000;
+        
+        // Format and display the amount
+        editTextAmount.setText("");
+        editTextAmount.requestFocus();
+        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+        if (imm != null) {
+            imm.showSoftInput(editTextAmount, InputMethodManager.SHOW_IMPLICIT);
+        }
+        
+        // Generate reference ID
+        referenceId = "ref-" + generateRandomString(8);
+        referenceIdTextView.setText(referenceId);
+
+        // Set up click listeners
+        initiatePaymentButton.setOnClickListener(v -> createTransaction());
+        simulatePaymentButton.setOnClickListener(v -> simulateWebhook());
+        returnToMainButton.setOnClickListener(v -> finish());
+
+        // Initially hide the QR code and payment success views
+        paymentDetailsLayout.setVisibility(View.GONE);
+        paymentSuccessLayout.setVisibility(View.GONE);
+        simulatePaymentButton.setVisibility(View.GONE);
+    }
+
+    private void createTransaction() {
+        progressBar.setVisibility(View.VISIBLE);
+        initiatePaymentButton.setEnabled(false);
+        statusTextView.setText("Creating transaction...");
+        
+        new CreateTransactionTask().execute();
+    }
+
+    private void displayQrCode(String qrImageUrl) {
+        new DownloadImageTask().execute(qrImageUrl);
+    }
+
+    private void simulateWebhook() {
+        progressBar.setVisibility(View.VISIBLE);
+        simulatePaymentButton.setEnabled(false);
+        statusTextView.setText("Processing payment...");
+        
+        new SimulateWebhookTask().execute();
+    }
+
+    private void showSuccessScreen() {
+        paymentDetailsLayout.setVisibility(View.GONE);
+        paymentSuccessLayout.setVisibility(View.VISIBLE);
+        statusTextView.setText("Payment successful!");
+        progressBar.setVisibility(View.GONE);
+    }
+
+    private String generateRandomString(int length) {
+        String chars = "abcdefghijklmnopqrstuvwxyz0123456789";
+        StringBuilder sb = new StringBuilder();
+        Random random = new Random();
+        for (int i = 0; i < length; i++) {
+            int index = random.nextInt(chars.length());
+            sb.append(chars.charAt(index));
+        }
+        return sb.toString();
+    }
+
+    private String getServerKey() {
+        // MIDTRANS_AUTH = 'Basic base64string'
+        String base64 = MIDTRANS_AUTH.replace("Basic ", "");
+        String decoded = android.util.Base64.decode(base64, android.util.Base64.DEFAULT).toString();
+        // Format is usually 'SB-Mid-server-xxxx:'. Remove trailing colon if present.
+        return decoded.replace(":\n", "");
+    }
+
+    private String generateSignature(String orderId, String statusCode, String grossAmount, String serverKey) {
+        String input = orderId + statusCode + grossAmount + serverKey;
+        try {
+            java.security.MessageDigest md = java.security.MessageDigest.getInstance("SHA-512");
+            byte[] messageDigest = md.digest(input.getBytes());
+            StringBuilder hexString = new StringBuilder();
+            for (byte b : messageDigest) {
+                String hex = Integer.toHexString(0xff & b);
+                if (hex.length() == 1) hexString.append('0');
+                hexString.append(hex);
+            }
+            return hexString.toString();
+        } catch (java.security.NoSuchAlgorithmException e) {
+            return "";
+        }
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if (item.getItemId() == android.R.id.home) {
+            finish();
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+    
+    private class CreateTransactionTask extends AsyncTask<Void, Void, Boolean> {
+        private String errorMessage;
+        
+        @Override
+        protected Boolean doInBackground(Void... voids) {
+            try {
+                // Generate a UUID for the transaction
+                transactionUuid = UUID.randomUUID().toString();
+                
+                // Create transaction JSON payload
+                JSONObject payload = new JSONObject();
+                payload.put("type", "PAYMENT");
+                payload.put("channel_category", "RETAIL_OUTLET");
+                payload.put("channel_code", "QRIS");
+                payload.put("reference_id", referenceId);
+                
+                // Read amount from EditText and log it
+                String amountText = editTextAmount.getText().toString().trim();
+                Log.d("MidtransCharge", "Raw amount text: " + amountText);
+                
+                try {
+                    // Parse amount - expecting integer in lowest denomination (Indonesian Rupiah)
+                    amount = Integer.parseInt(amountText);
+                    Log.d("MidtransCharge", "Parsed amount: " + amount);
+                } catch (NumberFormatException e) {
+                    Log.e("MidtransCharge", "Amount parsing error: " + e.getMessage());
+                    errorMessage = "Invalid amount format";
+                    return false;
+                }
+                
+                payload.put("amount", amount);
+                payload.put("cashflow", "MONEY_IN");
+                payload.put("status", "INIT");
+                payload.put("device_id", 1);
+                payload.put("transaction_uuid", transactionUuid);
+                payload.put("transaction_time_seconds", 0.0);
+                payload.put("device_code", "PB4K252T00021");
+                payload.put("merchant_name", "Marcel Panjaitan");
+                payload.put("mid", "71000026521");
+                payload.put("tid", "73001500");
+                
+                // Make the API call
+                URL url = new URI(BACKEND_BASE + "/transactions").toURL();
+                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+                conn.setRequestMethod("POST");
+                conn.setRequestProperty("Content-Type", "application/json");
+                conn.setRequestProperty("Accept", "application/json");
+                conn.setDoOutput(true);
+                
+                try (OutputStream os = conn.getOutputStream()) {
+                    byte[] input = payload.toString().getBytes("utf-8");
+                    os.write(input, 0, input.length);
+                }
+                
+                int responseCode = conn.getResponseCode();
+                if (responseCode == 200 || responseCode == 201) {
+                    // Read the response
+                    BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
+                    StringBuilder response = new StringBuilder();
+                    String responseLine;
+                    while ((responseLine = br.readLine()) != null) {
+                        response.append(responseLine.trim());
+                    }
+                    
+                    // Parse the response to get transaction ID
+                    JSONObject jsonResponse = new JSONObject(response.toString());
+                    JSONObject data = jsonResponse.getJSONObject("data");
+                    transactionId = String.valueOf(data.getInt("id"));
+                    
+                    // Now generate QRIS via Midtrans
+                    return generateQris(amount);
+                } else {
+                    // Read error response
+                    BufferedReader br = new BufferedReader(new InputStreamReader(conn.getErrorStream(), "utf-8"));
+                    StringBuilder response = new StringBuilder();
+                    String responseLine;
+                    while ((responseLine = br.readLine()) != null) {
+                        response.append(responseLine.trim());
+                    }
+                    errorMessage = "Error creating transaction: " + response.toString();
+                    return false;
+                }
+            } catch (Exception e) {
+                Log.e("MidtransCharge", "Exception: " + e.getMessage(), e);
+                errorMessage = "Unexpected error: " + e.getMessage();
+                return false;
+            }
+        }
+        
+        private boolean generateQris(int amount) {
+            try {
+                // Create QRIS charge JSON payload
+                JSONObject payload = new JSONObject();
+                payload.put("payment_type", "qris");
+                
+                JSONObject transactionDetails = new JSONObject();
+                transactionDetails.put("order_id", transactionUuid);
+                transactionDetails.put("gross_amount", amount);
+                payload.put("transaction_details", transactionDetails);
+                
+                // Log the request details
+                Log.d("MidtransCharge", "URL: " + MIDTRANS_CHARGE_URL);
+                Log.d("MidtransCharge", "Authorization: " + MIDTRANS_AUTH);
+                Log.d("MidtransCharge", "Accept: application/json");
+                Log.d("MidtransCharge", "Content-Type: application/json");
+                Log.d("MidtransCharge", "X-Override-Notification: " + WEBHOOK_URL);
+                Log.d("MidtransCharge", "Payload: " + payload.toString());
+
+                // Make the API call to Midtrans
+                URL url = new URI(MIDTRANS_CHARGE_URL).toURL();
+                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+                conn.setRequestMethod("POST");
+                conn.setRequestProperty("Accept", "application/json");
+                conn.setRequestProperty("Content-Type", "application/json");
+                conn.setRequestProperty("Authorization", MIDTRANS_AUTH); 
+                conn.setRequestProperty("X-Override-Notification", WEBHOOK_URL);
+                conn.setDoOutput(true);
+                
+                try (OutputStream os = conn.getOutputStream()) {
+                    byte[] input = payload.toString().getBytes("utf-8");
+                    os.write(input, 0, input.length);
+                }
+                
+                int responseCode = conn.getResponseCode();
+                if (responseCode == 200 || responseCode == 201) {
+                    InputStream inputStream = conn.getInputStream();
+                    if (inputStream != null) {
+                        BufferedReader br = new BufferedReader(new InputStreamReader(inputStream, "utf-8"));
+                        StringBuilder response = new StringBuilder();
+                        String responseLine;
+                        while ((responseLine = br.readLine()) != null) {
+                            response.append(responseLine.trim());
+                        }
+                        
+                        // Parse the response
+                        midtransResponse = new JSONObject(response.toString());
+                        return true;
+                    } else {
+                        Log.e("MidtransCharge", "HTTP " + responseCode + ": No input stream available");
+                        errorMessage = "Error generating QRIS: HTTP " + responseCode + ": No input stream available";
+                        return false;
+                    }
+                } else {
+                    InputStream errorStream = conn.getErrorStream();
+                    if (errorStream != null) {
+                        BufferedReader br = new BufferedReader(new InputStreamReader(errorStream, "utf-8"));
+                        StringBuilder errorResponse = new StringBuilder();
+                        String responseLine;
+                        while ((responseLine = br.readLine()) != null) {
+                            errorResponse.append(responseLine.trim());
+                        }
+                        Log.e("MidtransCharge", "HTTP " + responseCode + ": " + errorResponse.toString());
+                        errorMessage = "Error generating QRIS: HTTP " + responseCode + ": " + errorResponse.toString();
+                    } else {
+                        Log.e("MidtransCharge", "HTTP " + responseCode + ": No error stream available");
+                        errorMessage = "Error generating QRIS: HTTP " + responseCode + ": No error stream available";
+                    }
+                    return false;
+                }
+            } catch (Exception e) {
+                Log.e("MidtransCharge", "Exception: " + e.getMessage(), e);
+                errorMessage = "Unexpected error: " + e.getMessage();
+                return false;
+            }
+        }
+        
+        @Override
+        protected void onPostExecute(Boolean success) {
+            if (success && midtransResponse != null) {
+                try {
+                    // Extract needed values from midtransResponse
+                    JSONObject actions = midtransResponse.getJSONArray("actions").getJSONObject(0);
+                    String qrImageUrl = actions.getString("url");
+                    
+                    // Extract transaction_id
+                    String transactionId = midtransResponse.getString("transaction_id");
+                    String transactionTime = midtransResponse.getString("transaction_time");
+                    String acquirer = midtransResponse.getString("acquirer");
+                    String merchantId = midtransResponse.getString("merchant_id");
+                    String exactGrossAmount = midtransResponse.getString("gross_amount");
+                    
+                    // Log everything before launching activity
+                    Log.d("MidtransCharge", "Creating QrisResultActivity intent with:");
+                    Log.d("MidtransCharge", "qrImageUrl: " + qrImageUrl);
+                    Log.d("MidtransCharge", "amount: " + amount);
+                    Log.d("MidtransCharge", "referenceId: " + referenceId);
+                    Log.d("MidtransCharge", "transactionUuid (orderId): " + transactionUuid);
+                    Log.d("MidtransCharge", "transaction_id: " + transactionId);
+                    Log.d("MidtransCharge", "exactGrossAmount: " + exactGrossAmount);
+                    
+                    // Instead of showing QR inline, launch QrisResultActivity
+                    Intent intent = new Intent(QrisActivity.this, QrisResultActivity.class);
+                    intent.putExtra("qrImageUrl", qrImageUrl);
+                    intent.putExtra("amount", amount);
+                    intent.putExtra("referenceId", referenceId);
+                    intent.putExtra("orderId", transactionUuid); // Order ID
+                    intent.putExtra("transactionId", transactionId); // Actual Midtrans transaction_id
+                    intent.putExtra("grossAmount", exactGrossAmount); // Exact gross amount from response
+                    intent.putExtra("transactionTime", transactionTime); // For timestamp
+                    intent.putExtra("acquirer", acquirer);
+                    intent.putExtra("merchantId", merchantId);
+                    
+                    try {
+                        startActivity(intent);
+                    } catch (Exception e) {
+                        Log.e("MidtransCharge", "Failed to start QrisResultActivity: " + e.getMessage(), e);
+                        Toast.makeText(QrisActivity.this, "Error launching QR display: " + e.getMessage(), Toast.LENGTH_LONG).show();
+                    }
+                    return;
+                } catch (JSONException e) {
+                    Log.e("MidtransCharge", "QRIS response JSON error: " + e.getMessage(), e);
+                    Toast.makeText(QrisActivity.this, "Error processing QRIS response", Toast.LENGTH_LONG).show();
+                }
+            } else {
+                String message = (errorMessage != null && !errorMessage.isEmpty()) ? errorMessage : "Unknown error occurred. Please check Logcat for details.";
+                Toast.makeText(QrisActivity.this, message, Toast.LENGTH_LONG).show();
+                initiatePaymentButton.setEnabled(true);
+            }
+            progressBar.setVisibility(View.GONE);
+        }
+    }
+    
+    private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
+        @Override
+        protected Bitmap doInBackground(String... urls) {
+            String urlDisplay = urls[0];
+            Bitmap bitmap = null;
+            try {
+                URL url = new URI(urlDisplay).toURL();
+                HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+                connection.setDoInput(true);
+                connection.connect();
+                java.io.InputStream input = connection.getInputStream();
+                bitmap = android.graphics.BitmapFactory.decodeStream(input);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+            return bitmap;
+        }
+
+        @Override
+        protected void onPostExecute(Bitmap result) {
+            if (result != null) {
+                qrCodeImageView.setImageBitmap(result);
+            } else {
+                Toast.makeText(QrisActivity.this, "Error loading QR code image", Toast.LENGTH_LONG).show();
+            }
+        }
+    }
+    
+    private class SimulateWebhookTask extends AsyncTask<Void, Void, Boolean> {
+        private String errorMessage;
+        
+        @Override
+        protected Boolean doInBackground(Void... voids) {
+            try {
+                // Wait a moment to simulate real-world timing
+                Thread.sleep(1500);
+                
+                // Get server key and prepare signature
+                String serverKey = getServerKey();
+                String grossAmount = String.valueOf(amount) + ".00";
+                String signatureKey = generateSignature(
+                    transactionUuid,
+                    "200",
+                    grossAmount,
+                    serverKey
+                );
+                
+                // Create webhook payload
+                JSONObject payload = new JSONObject();
+                payload.put("transaction_type", "on-us");
+                payload.put("transaction_time", midtransResponse.getString("transaction_time"));
+                payload.put("transaction_status", "settlement");
+                payload.put("transaction_id", midtransResponse.getString("transaction_id"));
+                payload.put("status_message", "midtrans payment notification");
+                payload.put("status_code", "200");
+                payload.put("signature_key", signatureKey);
+                payload.put("settlement_time", midtransResponse.getString("transaction_time"));
+                payload.put("payment_type", "qris");
+                payload.put("order_id", transactionUuid);
+                payload.put("merchant_id", midtransResponse.getString("merchant_id"));
+                payload.put("issuer", midtransResponse.getString("acquirer"));
+                payload.put("gross_amount", grossAmount);
+                payload.put("fraud_status", "accept");
+                payload.put("currency", "IDR");
+                payload.put("acquirer", midtransResponse.getString("acquirer"));
+                payload.put("shopeepay_reference_number", "");
+                payload.put("reference_id", referenceId);
+                
+                // Call the webhook URL
+                URL url = new URI(WEBHOOK_URL).toURL();
+                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+                conn.setRequestMethod("POST");
+                conn.setRequestProperty("Content-Type", "application/json");
+                conn.setRequestProperty("Accept", "application/json");
+                conn.setDoOutput(true);
+                
+                try (OutputStream os = conn.getOutputStream()) {
+                    byte[] input = payload.toString().getBytes("utf-8");
+                    os.write(input, 0, input.length);
+                }
+                
+                int responseCode = conn.getResponseCode();
+                if (responseCode == 200 || responseCode == 201) {
+                    // Wait briefly to allow the backend to process
+                    Thread.sleep(2000);
+                    return checkTransactionStatus();
+                } else {
+                    // Read error response
+                    BufferedReader br = new BufferedReader(new InputStreamReader(conn.getErrorStream(), "utf-8"));
+                    StringBuilder response = new StringBuilder();
+                    String responseLine;
+                    while ((responseLine = br.readLine()) != null) {
+                        response.append(responseLine.trim());
+                    }
+                    errorMessage = "Error simulating payment: " + response.toString();
+                    return false;
+                }
+            } catch (Exception e) {
+                errorMessage = "Error: " + e.getMessage();
+                return false;
+            }
+        }
+        
+        private boolean checkTransactionStatus() {
+            try {
+                // Check transaction status
+                URL url = new URI(BACKEND_BASE + "/transactions/" + transactionId).toURL();
+                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+                conn.setRequestMethod("GET");
+                conn.setRequestProperty("Accept", "application/json");
+                
+                int responseCode = conn.getResponseCode();
+                if (responseCode == 200) {
+                    // Read the response
+                    BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
+                    StringBuilder response = new StringBuilder();
+                    String responseLine;
+                    while ((responseLine = br.readLine()) != null) {
+                        response.append(responseLine.trim());
+                    }
+                    
+                    // Parse the response
+                    JSONObject jsonResponse = new JSONObject(response.toString());
+                    JSONObject data = jsonResponse.getJSONObject("data");
+                    String status = data.getString("status");
+                    
+                    return status.equalsIgnoreCase("SUCCESS");
+                } else {
+                    errorMessage = "Error checking transaction status. HTTP response code: " + responseCode;
+                    return false;
+                }
+            } catch (Exception e) {
+                errorMessage = "Error checking transaction status: " + e.getMessage();
+                return false;
+            }
+        }
+        
+        @Override
+        protected void onPostExecute(Boolean success) {
+            if (success) {
+                showSuccessScreen();
+            } else {
+                String message = (errorMessage != null && !errorMessage.isEmpty()) ? errorMessage : "Unknown error occurred. Please check Logcat for details.";
+                Toast.makeText(QrisActivity.this, message, Toast.LENGTH_LONG).show();
+                simulatePaymentButton.setEnabled(true);
+            }
+            progressBar.setVisibility(View.GONE);
+        }
+    }
+}

app/src/main/java/com/example/bdkipoc/ReceiptActivity.java

@@ -95,10 +95,10 @@ public class ReceiptActivity extends AppCompatActivity {
     }
 
     private void setupClickListeners() {
-        // Back navigation
-        backNavigation.setOnClickListener(v -> navigateBack());
-        backArrow.setOnClickListener(v -> navigateBack());
-        toolbarTitle.setOnClickListener(v -> navigateBack());
+        // Back navigation - Goes back to previous activity (PaymentActivity)
+        backNavigation.setOnClickListener(v -> navigateBackToPrevious());
+        backArrow.setOnClickListener(v -> navigateBackToPrevious());
+        toolbarTitle.setOnClickListener(v -> navigateBackToPrevious());
         
         // Action buttons
         printButton.setOnClickListener(v -> handlePrintReceipt());
@@ -191,24 +191,43 @@ public class ReceiptActivity extends AppCompatActivity {
     }
 
     private void handleFinish() {
-        // Finish and return to main screen
-        navigateBack();
+        // Navigate to MainActivity/Home Page when "Selesai" button is pressed
+        navigateToHomePage();
     }
 
-    private void navigateBack() {
-        // You can navigate back to main activity or finish
+    private void navigateBackToPrevious() {
+        // Navigate back to PaymentActivity (previous activity)
         Intent intent = new Intent(this, PaymentActivity.class);
         intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
         startActivity(intent);
         finish();
     }
 
+    private void navigateToHomePage() {
+        // Navigate to MainActivity/Home Page when "Selesai" button is pressed
+        Intent intent = new Intent(this, MainActivity.class);
+        
+        // Clear all previous activities from the stack and start fresh
+        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
+        
+        // Optional: Add success message to show in MainActivity
+        intent.putExtra("transaction_completed", true);
+        intent.putExtra("transaction_amount", getIntent().getStringExtra("transaction_amount"));
+        
+        startActivity(intent);
+        finish();
+        
+        // Show success message
+        showToast("Transaksi berhasil diselesaikan!");
+    }
+
     private void showToast(String message) {
         android.widget.Toast.makeText(this, message, android.widget.Toast.LENGTH_SHORT).show();
     }
 
     @Override
     public void onBackPressed() {
-        navigateBack();
+        // Back button behavior - goes back to previous activity
+        navigateBackToPrevious();
     }
 }

app/src/main/res/layout/activity_qris.xml

@@ -0,0 +1,227 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
+            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
+            app:title="QRIS Payment" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <androidx.core.widget.NestedScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="vertical"
+            android:padding="16dp">
+
+            <ProgressBar
+                android:id="@+id/progressBar"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_horizontal"
+                android:visibility="gone" />
+
+            <TextView
+                android:id="@+id/statusTextView"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginBottom="16dp"
+                android:gravity="center"
+                android:text="Ready to make a payment"
+                android:textSize="18sp" />
+
+            <!-- Initial Payment Form -->
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <androidx.cardview.widget.CardView
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="8dp"
+                    app:cardBackgroundColor="@color/light_blue"
+                    app:cardCornerRadius="8dp"
+                    app:cardElevation="4dp">
+
+                    <LinearLayout
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:orientation="vertical"
+                        android:padding="16dp">
+
+                        <TextView
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="Amount"
+                            android:textColor="@color/primary_blue"
+                            android:textSize="16sp" />
+
+                        <EditText
+                            android:id="@+id/editTextAmount"
+                            android:layout_width="match_parent"
+                            android:layout_height="wrap_content"
+                            android:layout_marginTop="8dp"
+                            android:hint="Enter amount"
+                            android:inputType="number"
+                            android:maxLength="12"
+                            android:importantForAutofill="no"
+                            android:singleLine="true"
+                            android:textColor="@color/primary_blue"
+                            android:textSize="24sp"
+                            android:textStyle="bold"
+                            android:gravity="end" />
+
+                        <TextView
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:layout_marginTop="16dp"
+                            android:text="Reference ID"
+                            android:textColor="@color/primary_blue"
+                            android:textSize="16sp" />
+
+                        <TextView
+                            android:id="@+id/referenceIdTextView"
+                            android:layout_width="match_parent"
+                            android:layout_height="wrap_content"
+                            android:layout_marginTop="8dp"
+                            android:text="ref-abcd1234"
+                            android:textColor="@color/primary_blue"
+                            android:textSize="16sp" />
+                    </LinearLayout>
+                </androidx.cardview.widget.CardView>
+
+                <Button
+                    android:id="@+id/initiatePaymentButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="8dp"
+                    android:backgroundTint="@color/primary_blue"
+                    android:text="Start Payment" />
+            </LinearLayout>
+
+            <!-- QR Code and Payment Details -->
+            <LinearLayout
+                android:id="@+id/paymentDetailsLayout"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:visibility="gone">
+
+                <androidx.cardview.widget.CardView
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="8dp"
+                    app:cardCornerRadius="8dp"
+                    app:cardElevation="4dp">
+
+                    <LinearLayout
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:gravity="center_horizontal"
+                        android:orientation="vertical"
+                        android:padding="16dp">
+
+                        <ImageView
+                            android:id="@+id/qrCodeImageView"
+                            android:layout_width="250dp"
+                            android:layout_height="250dp"
+                            android:contentDescription="QRIS Code"
+                            android:scaleType="fitCenter" />
+
+                        <TextView
+                            android:layout_width="match_parent"
+                            android:layout_height="wrap_content"
+                            android:layout_marginTop="16dp"
+                            android:gravity="center"
+                            android:text="Scan with your banking app or e-wallet to pay"
+                            android:textSize="14sp" />
+                    </LinearLayout>
+                </androidx.cardview.widget.CardView>
+
+                <Button
+                    android:id="@+id/simulatePaymentButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="8dp"
+                    android:backgroundTint="@color/accent_green"
+                    android:text="Confirm Payment" />
+            </LinearLayout>
+
+            <!-- Payment Success -->
+            <LinearLayout
+                android:id="@+id/paymentSuccessLayout"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:visibility="gone">
+
+                <androidx.cardview.widget.CardView
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="8dp"
+                    app:cardBackgroundColor="@color/light_gray"
+                    app:cardCornerRadius="8dp"
+                    app:cardElevation="4dp">
+
+                    <LinearLayout
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:gravity="center_horizontal"
+                        android:orientation="vertical"
+                        android:padding="16dp">
+
+                        <ImageView
+                            android:layout_width="64dp"
+                            android:layout_height="64dp"
+                            android:contentDescription="Success Icon"
+                            android:src="@android:drawable/ic_dialog_info"
+                            android:tint="@color/accent_green" />
+
+                        <TextView
+                            android:layout_width="match_parent"
+                            android:layout_height="wrap_content"
+                            android:layout_marginTop="16dp"
+                            android:gravity="center"
+                            android:text="Payment Successful!"
+                            android:textColor="@color/accent_green"
+                            android:textSize="20sp"
+                            android:textStyle="bold" />
+
+                        <TextView
+                            android:layout_width="match_parent"
+                            android:layout_height="wrap_content"
+                            android:layout_marginTop="8dp"
+                            android:gravity="center"
+                            android:text="Your transaction has been completed successfully."
+                            android:textSize="14sp" />
+                    </LinearLayout>
+                </androidx.cardview.widget.CardView>
+
+                <Button
+                    android:id="@+id/returnToMainButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="8dp"
+                    android:backgroundTint="@color/primary_blue"
+                    android:text="Return to Main" />
+            </LinearLayout>
+        </LinearLayout>
+    </androidx.core.widget.NestedScrollView>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>