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Notch Pay Mobile SDKs

Notch Pay provides native SDKs for iOS and Android to help you integrate payment functionality into your mobile applications.
  • Android
  • iOS
  • React Native
  • Flutter

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Android SDK

The Notch Pay Android SDK allows you to accept payments in your Android applications with a native checkout experience.

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Installation

Add the Notch Pay SDK to your app’s build.gradle file:
dependencies {
    implementation 'co.notchpay:notchpay-android:1.2.0'
}

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Initialization

Initialize the SDK in your Application class or main activity:
// In your Application class or main activity
import co.notchpay.android.NotchPay;

public class MyApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        
        // Initialize with your public key
        NotchPay.initialize("YOUR_PUBLIC_KEY");
        
        // For test mode
        NotchPay.setTestMode(true); // Set to false for production
    }
}

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Creating a Payment

To create a payment, you’ll need to make a server-side API call to initialize the payment, then use the SDK to complete it:
// First, create a payment on your server and get the payment ID
String paymentId = "pay_123456789"; // Get this from your server

// Then, launch the checkout
NotchPay.checkout(
    this, // Activity context
    paymentId,
    new NotchPayCheckoutCallback() {
        @Override
        public void onSuccess(NotchPayTransaction transaction) {
            // Payment successful
            String reference = transaction.getReference();
            String status = transaction.getStatus();
            double amount = transaction.getAmount();
            String currency = transaction.getCurrency();
            
            // Update your UI or navigate to a success screen
            showSuccessScreen(reference, amount, currency);
        }
        
        @Override
        public void onError(NotchPayException error) {
            // Payment failed
            String errorMessage = error.getMessage();
            
            // Show error message to user
            showErrorMessage(errorMessage);
        }
        
        @Override
        public void onCancel() {
            // User canceled the payment
            // Handle cancellation
            showCancellationMessage();
        }
    }
);

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Customizing the Checkout UI

You can customize the appearance of the checkout UI:
NotchPayCheckoutConfig config = new NotchPayCheckoutConfig.Builder()
    .setTitle("Payment for Order #123")
    .setDescription("Your order from Example Store")
    .setLogoUrl("https://example.com/logo.png")
    .setPrimaryColor("#4F46E5")
    .setShowReceiptPage(true)
    .build();

NotchPay.checkout(this, paymentId, config, callback);
To handle callbacks from the payment flow, you need to set up deep linking in your app:
  1. Add the following to your AndroidManifest.xml:
<activity
    android:name=".MainActivity"
    android:exported="true">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
    
    <!-- Deep link handling -->
    <intent-filter>
        <action android:name="android.intent.action.VIEW" />
        <category android:name="android.intent.category.DEFAULT" />
        <category android:name="android.intent.category.BROWSABLE" />
        <data
            android:scheme="yourapp"
            android:host="payment" />
    </intent-filter>
</activity>
  1. Handle the deep link in your activity:
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    // Handle deep link
    Intent intent = getIntent();
    if (Intent.ACTION_VIEW.equals(intent.getAction())) {
        Uri uri = intent.getData();
        if (uri != null) {
            String reference = uri.getQueryParameter("reference");
            if (reference != null) {
                // Verify payment status with your server
                verifyPayment(reference);
            }
        }
    }
}

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Complete Example

Here’s a complete example of integrating the Notch Pay Android SDK:
public class PaymentActivity extends AppCompatActivity {
    private Button payButton;
    private TextView statusText;
    private ProgressBar progressBar;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_payment);
        
        payButton = findViewById(R.id.pay_button);
        statusText = findViewById(R.id.status_text);
        progressBar = findViewById(R.id.progress_bar);
        
        payButton.setOnClickListener(v -> initiatePayment());
    }
    
    private void initiatePayment() {
        progressBar.setVisibility(View.VISIBLE);
        statusText.setText("Creating payment...");
        
        // Make API call to your server to create a payment
        ApiClient.createPayment(
            5000, // Amount
            "XAF", // Currency
            "customer@example.com", // Customer email
            new ApiCallback<PaymentResponse>() {
                @Override
                public void onSuccess(PaymentResponse response) {
                    progressBar.setVisibility(View.GONE);
                    launchCheckout(response.getPaymentId());
                }
                
                @Override
                public void onError(Exception e) {
                    progressBar.setVisibility(View.GONE);
                    statusText.setText("Error: " + e.getMessage());
                }
            }
        );
    }
    
    private void launchCheckout(String paymentId) {
        NotchPayCheckoutConfig config = new NotchPayCheckoutConfig.Builder()
            .setTitle("Payment for Order #123")
            .setDescription("Your order from Example Store")
            .setPrimaryColor("#4F46E5")
            .build();
            
        NotchPay.checkout(
            this,
            paymentId,
            config,
            new NotchPayCheckoutCallback() {
                @Override
                public void onSuccess(NotchPayTransaction transaction) {
                    statusText.setText("Payment successful!\nReference: " + transaction.getReference());
                }
                
                @Override
                public void onError(NotchPayException error) {
                    statusText.setText("Payment failed: " + error.getMessage());
                }
                
                @Override
                public void onCancel() {
                    statusText.setText("Payment canceled");
                }
            }
        );
    }
    
    private void verifyPayment(String reference) {
        progressBar.setVisibility(View.VISIBLE);
        statusText.setText("Verifying payment...");
        
        // Make API call to your server to verify the payment
        ApiClient.verifyPayment(
            reference,
            new ApiCallback<PaymentVerificationResponse>() {
                @Override
                public void onSuccess(PaymentVerificationResponse response) {
                    progressBar.setVisibility(View.GONE);
                    if (response.isSuccessful()) {
                        statusText.setText("Payment verified!\nAmount: " + response.getAmount() + " " + response.getCurrency());
                    } else {
                        statusText.setText("Payment verification failed: " + response.getMessage());
                    }
                }
                
                @Override
                public void onError(Exception e) {
                    progressBar.setVisibility(View.GONE);
                    statusText.setText("Error verifying payment: " + e.getMessage());
                }
            }
        );
    }
}

API Reference

Complete API documentation

JavaScript SDK

Integrate with web applications

Checkout

Learn about the hosted checkout solution