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To work with Assist.Mobile, you need to use Android SDK version 15 26or higher (Android 4 8.0 .3Oreo).

Description of SDK Assist.Mobile

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useCamera - a flag indicating to use the mobile device's camera to read the customer's bank card number or enter the number manually.

After the successful completion of the payment, you can save the buyer's signature using the method:

void assistPayEngine.setUserSignature(long id, byte[] signature),

where

id - payment transaction ID.

Additionally, you can check the result of the payment using the method:

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Note

The string is generated from order parameters with semicolon as delimiter. The following parameters are included in the string:  Merchant _ ID;OrderNumber;OrderAmount;OrderCurrency. Then the MD5 hash prepared from this string. Hash is signed by private RSA key of the merchant. Key length - 1024. Received bit byte sequence is a signature of the merchant. Signature is transferred as an additional parameter encoded as a string in BASE64 format.

Storage of payment results

The payments made are stored in SQLite DB, which is accessed through the AssistTransactionStorage interface and the AssistTransactionFilter and AssistTransactionsLoader classes.

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An instance of the AssistTransactionsLoader class must be created in the onCreateLoader(int id, Bundle args) method of the class that implements the LoaderManager.LoaderCallbacks<> interface.

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Google Pay support

To work with Android Google Pay, it is recommended that you first read the documentation on the developer's website https://developers.google.com/android-pay/.

At the moment, work with the Google wallet is presented in the SANDBOX mode. Therefore, to determine the possibility of making a test payment, you need to contact the Assist support service support@assist.ru.

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  1. Copy the mobilePay-release-X.X.X.aar file to the /libs directory of the app module.

  2. Add to module's build.gradle.

    Code Block
    languageactionscript3
                  repositories {
                  flatDir {
                      dirs 'libs'
                  }
               }
 
              dependencies {
                  compile 'io.card:android-sdk:5.0.0'
                  compile(name: 'mobilePay-release-X.X.X', ext: 'aar')
              }
  3. Make following changes in AndroidManifect.xml:

3.1. First you need to make sure that the minimum SDK version is

...

26 or higher. There should be an

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tag like this inside the <manifest>

...

tag:

Code Block
languageactionscript3
        <uses-sdk android:minSdkVersion="26"/>

3.2. The following permissions must also be present inside the <manifest

...

> tag:

Code Block
languageactionscript3
             <uses-permission android:name="android.permission.INTERNET" />
             <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />        
             <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
             <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
             <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
 
             <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-feature android:name="android.hardware.camera.flash" android:required="false" />

3.3. Add an activity to the <application

...

> tag:

Code Block
languageactionscript3
             <activity
                 android:name="ru.assisttech.sdk.processor.WebViewActivity"
                 android:configChanges="keyboardHidden|orientation|screenSize">
             </activity>
             <activity
                 android:name="io.card.payment.CardIOActivity"
                 android:configChanges="keyboardHidden|orientation" />
             <activity android:name="io.card.payment.DataEntryActivity" />

3.4. Before releasing the app, you need to add to the proguard configuration file:

Code Block
languageactionscript3
                 ```
                -keep class io.card.**
                -keepclassmembers class io.card.** {
                 *;
                }    
                -keep class ru.assisttech.sdk.**
                -keepclassmembers class ru.assisttech.sdk.** {
                 *;
                }
                ```

An example of payment implementing using the Assist.Mobile SDK

Code Block
languageactionscript3
package ru.assisttech.example;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import ru.assisttech.sdk.AssistSDK;
import ru.assisttech.sdk.AssistPaymentData;
import ru.assisttech.sdk.engine.AssistPayEngine;
import ru.assisttech.sdk.engine.PayEngineListener;
import ru.assisttech.sdk.storage.AssistTransaction;
public class
MainActivity extends
Activity implements
PayEngineListener { 
    private TextView tvPaymentResult;
    private AssistPayEngine
engine;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tvPaymentResult = (TextView) findViewById(R.id.textView);
        // Getting a payment component from the library
        engine= AssistSDK.getPayEngine(this);
        // Setting the server address
        engine.setServerURL("server url");
        // Setting the listener of the result
        engine.setEngineListener(this);

        findViewById(R.id.btPay).setOnClickListener(new View.OnClickListener(){

            @Override
            public void onClick(View v) {
                // Setting payment options
                AssistPaymentData data = new AssistPaymentData();
                // Merchant ID in IPS Assist
                data.setMerchantId("12345");
                // Order number
                data.setOrderNumber("OrderNo");
                // Amount
                data.setOrderAmount("100"); // 100 RUB
                // Currency
                data.setOrderCurrency(AssistPaymentData.Currency.RUB);
                // Comment
                data.setOrderComment("Test payment");
                // Payer's e-mail 
                data.setEmail("customer@mail.com");
                // Payer's postal address
                data.setAddress("Москва, Ленинградское ш. 39");
                // Home phone
                data.setHomePhone("567-99-29");
                // Work phone
                data.setWorkPhone("555-00-00");
                // Mobile phone
                data.setMobilePhone("+79067410863");
                // Fax
                data.setFax("");
                // Lastname
                data.setLastname("Романов");
                // First name
                data.setFirstname("Пётр");
                // Middle name
                data.setMiddlename("Алексеевич");
                // Payer country
                data.setCountry("Russia");
                // Region (state)
                data.setState("Moscow");
                // City
                data.setCity("Moscow");
                // Postal code
                data.setZip("100290");
                // Language
                data.setLanguage(AssistPaymentData.Lang.RU);
                // Payment parameters signature calculation...
                String signature = "stub_signature";
                // Signature setting
                data.setSignature(signature);
                // Starting the payment process
                engine.payWeb(MainActivity.this, data, false);
            }
        });
    }
    /**
     * PayEngineListener callbacks
     */
    @Override
    public void onFinished(Activity activity, AssistTransaction assistTransaction) {
        if (!this.equals(activity)) {
            activity.finish();
        }
        tvPaymentResult.setText(assistTransaction.getResult().getOrderState().toText());
    }

    @Override
    public void onCanceled(Activity activity, AssistTransaction assistTransaction) {
        if (!this.equals(activity)) {
            activity.finish();
        }
        tvPaymentResult.setText(assistTransaction.getResult().getOrderState().toText());

    }

    @Override
    public void onFailure(Activity activity, String info) {
        tvPaymentResult.setText("Error: " + info);
    }

    @Override
    public void onNetworkError(Activity activity, String s) {
        tvPaymentResult.setText("Network error: " + s);
    }
 }

The SDK and the sample app are available for download at the following link:

https://github.com/assist-group/assist-mcommerce-sdk-android

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