# DeviceConnect: Flutter

The DeviceConnect SDK enables the collection of anonymized, non-PII data from user devices, ensuring compliance with privacy policies by obtaining explicit user consent before initiating data sync processes.

# Requirements

Device Connect Flutter SDK works on Android 5.0+ (API level 21+), on Java 8+ and AndroidX. In addition to the changes, enable desugaring so that our SDK can run smoothly on Android 7.0 and versions below.

Kotlin
Groovy

android {
    ...
    defaultConfig {
        ...
        // Minimum 5.0+ devices
        minSdkVersion(21)
        ...
    }
    ...
    compileOptions {
        // Flag to enable support for the new language APIs
        coreLibraryDesugaringEnabled = true
        // Sets Java compatibility to Java 8
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }
    // For Kotlin projects
    kotlinOptions {
        jvmTarget = "1.8"
    }
}

dependencies {
    coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:1.1.5")
}

# Add Plugin

Specify the following in local.properties file:

ACCESS_KEY=<ACCESS_KEY>
SECRET_KEY=<SECRET_KEY>
DC_SDK_VERSION=<RM_SDK_VERSION>
COMMON_SDK_VERSION=<COMMON_SDK_VERSION>
COMMON_FLAVOR=<COMMON_FLAVOR>
LOGGER_SDK_VERSION=<LOGGER_SDK_VERSION>

Add plugin dependency in pubspec.yaml file:

finbox_dc_plugin: any

NOTE

Following will be shared by FinBox team at the time of integration:

ACCESS_KEY
SECRET_KEY
DC_SDK_VERSION
COMMON_SDK_VERSION
COMMON_FLAVOR
LOGGER_SDK_VERSION
CLIENT_API_KEY

# Create User

To create a user, call the createUser method with the following arguments:

Client API Key
Customer ID

IMPORTANT

CUSTOMER_ID Must be alphanumeric (no special characters).
Should not exceed 64 characters.
Must not be null or an empty string "".

FinBoxDcPlugin.createUser("CLIENT_API_KEY", "CUSTOMER_ID").fold(
    (right) => {
          // Authentication is success
          print("Access Token: $right")
        },
    (left) => {
          // Authentication failed
          print("Error Code $left")
        });

You can read about the errors in the Error Codes section.

# Start Periodic Sync

The startPeriodicSync method should be invoked only after receiving a successful response from the createUser method callback. This method initiates background syncing for all data sources based on the permissions granted by the user. Data is synced at regular intervals in the background, ensuring continuous and seamless data collection.

FinBoxDcPlugin.startPeriodicSync();

RECOMMENDATION

To handle cross-login scenarios:

When a user logs back into the app with fresh credentials:

Call the createUser method to register the new user.
Follow it by startPeriodicSync to resume data syncing for the new user. Even though the SDK automatically adapts to a new user, this approach minimizes potential delays in syncing during the first session

# Match Details on Device

Device matching enables additional pattern recognition to match email, phone numbers and name. The matching happens on the device and the user phone numbers, email addresses won't leave the device.

Call setDeviceMatch method before starting the syncs.

FinBoxDcPlugin.setDeviceMatch("useremail@gmail.com", "Full Name", "9999999999");

# Forward Notifications to SDK

Certain phone manufacturers, implement aggressive battery optimization features that kill apps running in the background after a certain period of inactivity. This can prevent the DeviceConnect SDK's continuous syncing from functioning properly, as it relies on background data collection. In such cases, FinBox’s server may need to request data from the SDK when continuous sync has stopped.

To enable this functionality, we use Firebase Cloud Messaging (FCM) notifications process. Forwarding these notifications allows the app to "wake up" if it has been killed by the device’s background processes, ensuring continuous data collection. When the app receives an FCM notification, it "wakes up" and continues collecting the necessary data for integration.

Add the following lines inside FirebaseMessaging.onMessage.listen method.

FinBoxDcPlugin.forwardFinBoxNotificationToSDK(event.data);

# Multi-Process Support

DeviceConnect uses a content provider to auto initialize the SDK. The limitation with the OS is that content providers are only initialized once in a multi-process application and from the main process. For this reason, any calls to the SDK from other processes will lead to unstable behavior.

In case, you want to use the Flutter SDK from a process other than the main process, follow the two steps mentioned below to initialize the SDK.

# Remove the Content Provider

Remove the content provider that auto initializes the SDK from the Android Manifest file.

<provider
    android:name="in.finbox.mobileriskmanager.init.AutoInitProvider"
    android:authorities="in.finbox.lenderapplication.riskmanagerprovider"
    android:enabled="true"
    android:exported="false"
    tools:node="remove" />

# Initialize the SDK

Initialize the FinBox Flutter SDK in the onCreate method of FlutterApplication class.

FinBoxDcPlugin.initLibrary(this)

# Cancel Periodic Sync

Make sure to cancel data synchronization tasks when the user logs out of the app by using the stopPeriodicSync method. This ensures that no background sync operations continue unnecessarily, maintaining data security.

FinBoxDcPlugin.stopPeriodicSync();

# Handle Sync Frequency

By default sync frequency is set to 8 hours, you can modify it by passing preferred time in seconds as an argument to setSyncFrequency method once the user is created.

FinBoxDcPlugin.setSyncFrequency(12 * 60 * 60);

# Reset User Data

If you need to clear a user's data stored on the device and initiate a fresh data sync, use the resetData method. This ensures that all previous data is removed, and syncing starts from scratch.

FinBoxDcPlugin.resetData();

# Forget User

If a user requests to be forgotten, use the forgetUser method. This will delete all user details from our system, ensuring this meets digital guidelines for right to be forgotten.

FinBoxDcPlugin.forgetUser();

RECOMMENDATION

When a user logs out, call both stopPeriodicSync and resetData to:
- Stop any ongoing periodic sync processes.
- Clear existing user data. This approach ensures a clean state before the next user session.

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