Android Development And Discussion: PayPal Integration in Android Application

Hi Friends,

Few days back i got a chance to work on Paypal for Android App, now i want to share a code snippet how to integrate PayPal in Android App to you people so, follow the below steps to integrate PayPal in your Android App :

Example:

First of all let me tell you the requirement of PayPal integration :

PayPal Developer Account to test you app. (Follow the link to create a PayPal Developer Account https://developer.paypal.com/webapps/developer/applications/accounts ).
PayPal Android SDK (you can download from here https://developer.paypal.com/docs/integration/mobile/android-integration-guide/ )

Steps to PayPal integration :

After downloading "PayPal-Android-SDK-master" extract it and navigate to "PayPal-Android-SDK-master\libs" folder from there copy all folder or jar file and put it into you project libs folder

Now Add the PayPalAndroidSDK.jar into in project properties follow the step (Right click on PayPalAndroidSDK.jar --> Build Path --> Add to Build Path)

Now follow the code snippet:

activity_main

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical" >

<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="118dp"
android:layout_weight="1"
android:src="@drawable/img" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1" >

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="onBuyPressed"
android:text="@string/buy" />

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/amount2"
android:textAppearance="?android:attr/textAppearanceSmall" />

</LinearLayout>

</LinearLayout>

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical" >

<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="120dp"
android:layout_weight="1"
android:src="@drawable/img2" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1" >

<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="onBuyPressed"
android:text="@string/buy" />

<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/amount"
android:textAppearance="?android:attr/textAppearanceSmall" />

</LinearLayout>

</LinearLayout>

</LinearLayout>

</LinearLayout>

MainActivity.java

package in.paypalexample;

import com.paypal.android.sdk.payments.PayPalAuthorization;
import com.paypal.android.sdk.payments.PayPalConfiguration;
import com.paypal.android.sdk.payments.PayPalFuturePaymentActivity;
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 android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import org.json.JSONException;
import java.math.BigDecimal;

public class MainActivity extends Activity{

private static final String TAG = "paymentExample";
/**
* - Set to PaymentActivity.ENVIRONMENT_PRODUCTION to move real money.
*
* - Set to PaymentActivity.ENVIRONMENT_SANDBOX to use your test credentials
* from https://developer.paypal.com
*
* - Set to PayPalConfiguration.ENVIRONMENT_NO_NETWORK to kick the tires
* without communicating to PayPal's servers.
*/
//private static final String CONFIG_ENVIRONMENT = PayPalConfiguration.ENVIRONMENT_NO_NETWORK;
private static final String CONFIG_ENVIRONMENT = PayPalConfiguration.ENVIRONMENT_SANDBOX;

// note that these credentials will differ between live & sandbox environments.
private static final String CONFIG_CLIENT_ID = "Paste Your Client Id";

private static final int REQUEST_CODE_PAYMENT = 1;
private static final int REQUEST_CODE_FUTURE_PAYMENT = 2;

private static PayPalConfiguration config = new PayPalConfiguration()
.environment(CONFIG_ENVIRONMENT)
.clientId(CONFIG_CLIENT_ID)
// The following are only used in PayPalFuturePaymentActivity.
.merchantName("Hipster Store")
.merchantPrivacyPolicyUri(Uri.parse("https://www.example.com/privacy"))
.merchantUserAgreementUri(Uri.parse("https://www.example.com/legal"));

PayPalPayment thingToBuy;

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

Intent intent = new Intent(this, PayPalService.class);
intent.putExtra(PayPalService.EXTRA_PAYPAL_CONFIGURATION, config);
startService(intent);

}

public void onBuyPressed(View pressed) {
// PAYMENT_INTENT_SALE will cause the payment to complete immediately.
// Change PAYMENT_INTENT_SALE to PAYMENT_INTENT_AUTHORIZE to only authorize payment and
// capture funds later.

if(pressed.getId() == R.id.button1){
thingToBuy = new PayPalPayment(new BigDecimal("8"), "USD", "Painting 1", PayPalPayment.PAYMENT_INTENT_SALE);
}else if(pressed.getId() == R.id.button2){
thingToBuy = new PayPalPayment(new BigDecimal("4"), "USD", "Painting 2", PayPalPayment.PAYMENT_INTENT_SALE);
}



Intent intent = new Intent(MainActivity.this, PaymentActivity.class);

intent.putExtra(PaymentActivity.EXTRA_PAYMENT, thingToBuy);

startActivityForResult(intent, REQUEST_CODE_PAYMENT);
}

public void onFuturePaymentPressed(View pressed) {
Intent intent = new Intent(MainActivity.this, PayPalFuturePaymentActivity.class);

startActivityForResult(intent, REQUEST_CODE_FUTURE_PAYMENT);
}

@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.i(TAG, confirm.toJSONObject().toString(4));
Log.i(TAG, confirm.getPayment().toJSONObject().toString(4));

Toast.makeText(
getApplicationContext(),
"PaymentConfirmation info received from PayPal", Toast.LENGTH_LONG)
.show();

} catch (JSONException e) {
Log.e(TAG, "an extremely unlikely failure occurred: ", e);
}
}
} else if (resultCode == Activity.RESULT_CANCELED) {
Log.i(TAG, "The user canceled.");
} else if (resultCode == PaymentActivity.RESULT_EXTRAS_INVALID) {
Log.i(TAG,"An invalid Payment or PayPalConfiguration was submitted. Please see the docs.");
}
} else if (requestCode == REQUEST_CODE_FUTURE_PAYMENT) {
if (resultCode == Activity.RESULT_OK) {
PayPalAuthorization auth =
data.getParcelableExtra(PayPalFuturePaymentActivity.EXTRA_RESULT_AUTHORIZATION);
if (auth != null) {
try {
Log.i("FuturePaymentExample", auth.toJSONObject().toString(4));

String authorization_code = auth.getAuthorizationCode();
Log.i("FuturePaymentExample", authorization_code);

sendAuthorizationToServer(auth);
Toast.makeText(
getApplicationContext(),
"Future Payment code received from PayPal", Toast.LENGTH_LONG)
.show();

} catch (JSONException e) {
Log.e("FuturePaymentExample", "an extremely unlikely failure occurred: ", e);
}
}
} else if (resultCode == Activity.RESULT_CANCELED) {
Log.i("FuturePaymentExample", "The user canceled.");
} else if (resultCode == PayPalFuturePaymentActivity.RESULT_EXTRAS_INVALID) {
Log.i(
"FuturePaymentExample",
"Probably the attempt to previously start the PayPalService had an invalid PayPalConfiguration. Please see the docs.");
}
}
}

private void sendAuthorizationToServer(PayPalAuthorization authorization) {

}

public void onFuturePaymentPurchasePressed(View pressed) {
// Get the Application Correlation ID from the SDK
String correlationId = PayPalConfiguration.getApplicationCorrelationId(this);

Log.i("FuturePaymentExample", "Application Correlation ID: " + correlationId);

// TODO: Send correlationId and transaction details to your server for processing with
// PayPal...
Toast.makeText(
getApplicationContext(), "App Correlation ID received from SDK", Toast.LENGTH_LONG)
.show();
}

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

Manifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="in.paypalexample"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="8" />


<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.VIBRATE" />

<uses-feature android:name="android.hardware.camera" android:required="false" />
<uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />


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



<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="in.paypalexample.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>


<service android:name="com.paypal.android.sdk.payments.PayPalService" android:exported="false" />

<activity android:name="com.paypal.android.sdk.payments.PaymentActivity" />
<activity android:name="com.paypal.android.sdk.payments.LoginActivity" />
<activity android:name="com.paypal.android.sdk.payments.PaymentMethodActivity" />
<activity android:name="com.paypal.android.sdk.payments.PaymentConfirmActivity" />
<activity android:name="com.paypal.android.sdk.payments.PayPalFuturePaymentActivity" />
<activity android:name="com.paypal.android.sdk.payments.FuturePaymentConsentActivity" />
<activity android:name="com.paypal.android.sdk.payments.FuturePaymentInfoActivity" />
<activity
android:name="io.card.payment.CardIOActivity"
android:configChanges="keyboardHidden|orientation" />
<activity android:name="io.card.payment.DataEntryActivity" />


</application>

</manifest>

Download full project from here: