Android Pay-pal Integration Example Java

Step 1:

pay pal  developer account create and Create A New Project in android studio 

and internet connection in the manifest:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>

maven {
    url  "https://cardinalcommerceprod.jfrog.io/artifactory/android"
    credentials {
        username "paypal_sgerritz"
        password "AKCp8jQ8tAahqpT5JjZ4FRP2mW7GMoFZ674kGqHmupTesKeAY2G8NcmPKLuTxTGkKjDLRzDUQ"
    }
}

step 3: Add a dependencies :

implementation('com.paypal.checkout:android-sdk:1.1.0')

step 4: Create A New Class app  and extend Application:

public class App extends Application {

    @Override
    public void onCreate() {
        super.onCreate();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            PayPalCheckout.setConfig(new CheckoutConfig(
                    this,
                    "Aakwbag7yDJ7ZcL6KzQZhEQ42HO7muUz9V5Wg1205KYGd655GPX-nd5hDiE696CJZB7P0NiEeGj8TZf5",
                    Environment.SANDBOX,
                    CurrencyCode.USD,
                    UserAction.PAY_NOW,
                    "com.devshiv.paypaltestjava://paypalpay"
            ));
        }
    }
}

step 5: MainActivity 

package com.devshiv.paypaltestjava;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

import com.paypal.checkout.approve.Approval;
import com.paypal.checkout.approve.OnApprove;
import com.paypal.checkout.createorder.CreateOrder;
import com.paypal.checkout.createorder.CreateOrderActions;
import com.paypal.checkout.createorder.CurrencyCode;
import com.paypal.checkout.createorder.OrderIntent;
import com.paypal.checkout.createorder.UserAction;
import com.paypal.checkout.order.Amount;
import com.paypal.checkout.order.AppContext;
import com.paypal.checkout.order.CaptureOrderResult;
import com.paypal.checkout.order.OnCaptureComplete;
import com.paypal.checkout.order.OrderRequest;
import com.paypal.checkout.order.PurchaseUnit;
import com.paypal.checkout.paymentbutton.PaymentButtonContainer;

import org.jetbrains.annotations.NotNull;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MyTag";
    PaymentButtonContainer paymentButtonContainer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        paymentButtonContainer = findViewById(R.id.payment_button_container);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            paymentButtonContainer.setup(
                    new CreateOrder() {
                        @Override
                        public void create(@NotNull CreateOrderActions createOrderActions) {
                            Log.d(TAG, "create: ");
                            ArrayList<PurchaseUnit> purchaseUnits = new ArrayList<>();
                            purchaseUnits.add(
                                    new PurchaseUnit.Builder()
                                            .amount(
                                                    new Amount.Builder()
                                                            .currencyCode(CurrencyCode.USD)
                                                            .value("10.00")
                                                            .build()
                                            )
                                            .build()
                            );
                            OrderRequest order = new OrderRequest(
                                    OrderIntent.CAPTURE,
                                    new AppContext.Builder()
                                            .userAction(UserAction.PAY_NOW)
                                            .build(),
                                    purchaseUnits
                            );
                            createOrderActions.create(order, (CreateOrderActions.OnOrderCreated) null);
                        }
                    },
                    new OnApprove() {
                        @Override
                        public void onApprove(@NotNull Approval approval) {
                            approval.getOrderActions().capture(new OnCaptureComplete() {
                                @Override
                                public void onCaptureComplete(@NotNull CaptureOrderResult result) {
                                    Log.d(TAG, String.format("CaptureOrderResult: %s", result));
                                    Toast.makeText(MainActivity.this, "Successful", Toast.LENGTH_SHORT).show();
                                }
                            });
                        }
                    }
            );
        }
    }

    @Override
    public void onBackPressed() {
        super.onBackPressed();
        finish();
    }
}

Step 6 :Create Xml

<?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="#A81F2224"
    tools:context=".MainActivity">

    <com.paypal.checkout.paymentbutton.PaymentButtonContainer
        android:id="@+id/payment_button_container"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        app:paypal_button_color="blue"
        app:paypal_button_enabled="true"
        app:paypal_button_label="pay"
        app:paypal_button_shape="rectangle"
        app:paypal_button_size="large" />

</RelativeLayout>

output: