Stripe payments Android Java and Xml Code

1. Add Stripe Dependency

In app/build.gradle:

dependencies {
    implementation 'com.stripe:stripe-android:21.29.0'
}

2. XML Layout

activity_payment.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="20dp">

    <com.stripe.android.view.CardInputWidget
        android:id="@+id/cardInputWidget"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/btnPay"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Pay $10"
        android:layout_marginTop="20dp" />

</LinearLayout>

3. Initialize Stripe

In Application class or your Activity:

import com.stripe.android.PaymentConfiguration;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    PaymentConfiguration.init(
        getApplicationContext(),
        "pk_test_YOUR_PUBLISHABLE_KEY"
    );

    setContentView(R.layout.activity_payment);
}

4. Java Activity Example

import android.os.Bundle;
import android.widget.Button;

import androidx.appcompat.app.AppCompatActivity;

import com.stripe.android.PaymentConfiguration;
import com.stripe.android.model.PaymentMethodCreateParams;
import com.stripe.android.view.CardInputWidget;

public class PaymentActivity extends AppCompatActivity {

    private CardInputWidget cardInputWidget;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        PaymentConfiguration.init(
                getApplicationContext(),
                "pk_test_YOUR_PUBLISHABLE_KEY"
        );

        setContentView(R.layout.activity_payment);

        cardInputWidget = findViewById(R.id.cardInputWidget);
        Button btnPay = findViewById(R.id.btnPay);

        btnPay.setOnClickListener(v -> {

            PaymentMethodCreateParams params =
                    cardInputWidget.getPaymentMethodCreateParams();

            if (params != null) {

                // Send payment details to your backend
                // Backend creates PaymentIntent
                // Return client_secret
                // Confirm payment

            }
        });
    }
}

5. Backend (Required)

Create a PaymentIntent on your server:

Example (Node.js):

const stripe = require('stripe')('sk_test_SECRET_KEY');

const paymentIntent = await stripe.paymentIntents.create({
  amount: 1000,
  currency: 'usd'
});

console.log(paymentIntent.client_secret);

6. Confirm Payment on Android

After receiving the client_secret from your backend:

stripe.confirmPayment(
    this,
    ConfirmPaymentIntentParams.createWithPaymentMethodCreateParams(
        paymentMethodCreateParams,
        clientSecret
    )
);

Quick Setup Steps

1. Create a Stripe account at Stripe Dashboard
2. Get your Publishable Key and Secret Key.
3. Add the Stripe Android SDK.
4. Create a backend endpoint that generates a PaymentIntent.
5. Send the PaymentIntent client_secret to Android.
6. Call confirmPayment().
7. Handle success/failure callbacks.

Modern Alternative

Stripe now recommends using the PaymentSheet UI, which requires much less code and supports cards, Apple Pay/Google Pay (where applicable), and other payment methods automatically.