How integrate Paypal in android Application?

Question

I try to integrate paypal with Android app using sandbox. I\'m getting successfully longing with paypal but when I am doing payment then Screen will get invisible directly w

Answer 1

package com.paypal;

import android.app.Activity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.paypal.android.sdk.payments.PayPalConfiguration;
import com.paypal.android.sdk.payments.PayPalPayment;
import com.paypal.android.sdk.payments.PayPalService;
import com.paypal.android.sdk.payments.PaymentActivity;
import com.paypal.android.sdk.payments.PaymentConfirmation;

import org.json.JSONException;
import org.json.JSONObject;

import java.math.BigDecimal;

public class MainActivity extends AppCompatActivity {

    public static  String CONFIG_ENVIRONMENT = PayPalConfiguration.ENVIRONMENT_SANDBOX;
    // note that these credentials will differ between live & sandbox environments.

    public static  String CONFIG_CLIENT_ID = "Add your Client ID";      /// add your paypal client id 

   private static  int REQUEST_CODE_PAYMENT = 1;
    public static PayPalConfiguration config = new PayPalConfiguration()
            .environment(CONFIG_ENVIRONMENT)
            .clientId(CONFIG_CLIENT_ID);

    Button btn_payment;
    String paypal_id,paypal_state,paypal_amount,paypal_currency_code;

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

        btn_payment = (Button)findViewById(R.id.btn_payment);

        btn_payment.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                onBuyPressed();
            }
        });

    }

    public void onBuyPressed() {
        PayPalPayment thingToBuy = getThingToBuy(PayPalPayment.PAYMENT_INTENT_SALE);
        Intent intent = new Intent(MainActivity.this, PaymentActivity.class);
        intent.putExtra(PayPalService.EXTRA_PAYPAL_CONFIGURATION, config);
        intent.putExtra(PaymentActivity.EXTRA_PAYMENT, thingToBuy);
        startActivityForResult(intent, REQUEST_CODE_PAYMENT);
    }

    private PayPalPayment getThingToBuy(String paymentIntent) {
        return new PayPalPayment(new BigDecimal("1"), "USD", "sample item  ",
                paymentIntent);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_CODE_PAYMENT) {
            if (resultCode == Activity.RESULT_OK) {
                PaymentConfirmation confirm = data.getParcelableExtra(PaymentActivity.EXTRA_RESULT_CONFIRMATION);
                if (confirm != null) {
                    try {
                        Log.e("Show", confirm.toJSONObject().toString(4));
                        Log.e("Show", confirm.getPayment().toJSONObject().toString(4));

                        JSONObject json=confirm.toJSONObject();
                        JSONObject responce = json.getJSONObject("response");
                        paypal_id = responce.getString("id");
                        paypal_state = responce.getString("state");
                        JSONObject payment=confirm.getPayment().toJSONObject();
                        paypal_amount=payment.getString("amount");
                        paypal_currency_code=payment.getString("currency_code");

                        Toast.makeText(getApplicationContext(), "PaymentConfirmation info received" + " from PayPal", Toast.LENGTH_LONG).show();
                    } catch (JSONException e) {
                        Toast.makeText(getApplicationContext(), "an extremely unlikely failure" +
                                " occurred:", Toast.LENGTH_LONG).show();
                    }
                }
            } else if (resultCode == Activity.RESULT_CANCELED) {

            } else if (resultCode == PaymentActivity.RESULT_EXTRAS_INVALID) {
                Toast.makeText(getApplicationContext(), "An invalid Payment or PayPalConfiguration" +
                        " was submitted. Please see the docs.", Toast.LENGTH_LONG).show();
            }
        }
    }

    @Override
    public void onDestroy() {
        // Stop service when done
        stopService(new Intent(this, PayPalService.class));
        super.onDestroy();
    }

}


///////////////// decler paypal activity in manifest ///////////////////////////




    
    
    
    
    
    

    
    

    
        
            
                

                
            
        


        
        

        
        
        
        
        
        
        

    








//////////////////// gradel ///////////////////

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"

    defaultConfig {
        applicationId "com.paypal"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.0.1'
    compile 'com.paypal.sdk:paypal-android-sdk:2.14.2'
}