Nodle SDK - Android Integration

Integrating the Nodle SDK into your android app is easy and straightforward. Just follow the steps below and you should be ready to go in no time.

Step 1: Generate Public Key

Go and create a wallet -> https://learn.nodleprotocol.io/wallets/how-to-create-a-nodle-cash-wallet Make sure to save your private key
In the extension copy the public_key
Proceed forward with next steps.

Step 2: Add the Maven Repository

Add the code below in your project's build.gradle to add the Nodle repository

buildscript {
    repositories {
        google()
        maven { url 'http://maven.nodle.io/io/home/runner/.m2/repository/' }
    }
}

allprojects {
    repositories {
        google()
        maven { url 'http://maven.nodle.io/io/home/runner/.m2/repository/' }
    }
}

If you are using Android Studio Arctic Fox and newer AGP 7.0+ and GP 7.0+ please use the following. We are currently migrating the repository to HTTPS.

buildscript {
    repositories {
        google()
        maven {
            url "http://maven.nodle.io/io/home/runner/.m2/repository/"
            allowInsecureProtocol = true
        }
    }
}

allprojects {
    repositories {
        google()
        maven {
            url "http://maven.nodle.io/io/home/runner/.m2/repository/"
            allowInsecureProtocol = true
        }
    }
}

If you are using Android Studio Bumblebee and newer AGP 7.0.2+ and GP 7.0.2+ please use the following in your settings.gradle

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        maven {
            url "http://maven.nodle.io/io/home/runner/.m2/repository/"
            allowInsecureProtocol = true
        }
    }
}

If you are using Java as your language of choice please make sure to use the default Java Library version which is JDK 11 as of Android Studio Fox or Bumblebee update. Like that you can make sure your project works as expected between the Kotlin-Java and vice-versa compatibility. You can do that by following this path: Project Structure -> SDK Location -> Gradle Settings -> Gradle Projects -> Gradle JDK -> Select 11 or later.

Step 3: Add the NodleSDK dependency

In your app module's build.gradle simply add the Nodle SDK dependency in gradle. Please node that nodlesdk depends by default on google play service. If your app runs on devices that doesn't have google play service, you can use a different flavour of the nodlesdk that doesn't depend on google play services. Our previous release supports API 30 with AGP 7.0.2+ and GP 7.1:

// Top level gradle
buildscript {
    dependencies {
        classpath 'com.google.gms:google-services:4.3.8'    // Google Services plugin
    }
}

// Module Gradle
dependencies {
    implementation 'io.nodle:nodlesdk-rc-lp:cbe8a42b18'
}

dependencies {
    implementation 'io.nodle:nodlesdk-rc-lg:cbe8a42b18'
}

Our latest release provide full support for Android 12 API 31 with AGP 7.1.2+ and GP 7.2 you can simply add the Nodle SDK dependency in your build.gradle

// Top level gradle
buildscript {
    dependencies {
        classpath 'com.google.gms:google-services:4.3.10'    // Google Services plugin
    }
}

// Module Gradle
dependencies {
    implementation 'io.nodle:nodlesdk-rc-lp:381d19b7b5'
}

dependencies {
    implementation 'io.nodle:nodlesdk-rc-lg:381d19b7b5'
}

If you are using the Google Play Services version please make sure to add the plugin. You can use the libraries we are using or the newest ones. We would try to support always the latest libraries. The minAPI-19 and maxAPI-31. We are also on the latest version of AGP 7.1.2+

The latest version of the stable-production SDK is 381d19b7b5

Step 4: Initialize the Nodle SDK

First you need to declare your application class in your ApplicationManifest.xml. And declare the required permissions for Nodle to be able to run:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.nodle.dummy">
    
    <!-- Required permissions NodleSDK -->
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.BLUETOOTH"/>
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
    
    <!-- Required permissions NodleSDK Android 12  -->
    <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
    
     <!-- Put your application class name below -->
    <application
        android:name="App">
    </application>

</manifest>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.nodle.dummy">
    
    <!-- Required permissions NodleSDK -->
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.BLUETOOTH"/>
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
    
    <!-- Required permissions NodleSDK Android 12  -->
    <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
    
     <!-- Put your application class name below -->
    <application
        android:name="App">
    </application>

</manifest>

In the onCreate method of your application class you should initialize Nodle like this:

import io.nodle.sdk.android.Nodle

class App : Application() {
    override fun onCreate() {
        super.onCreate();
        Nodle.init(this);
    }
}

import io.nodle.sdk.android.Nodle

class App : Application() {
    override fun onCreate() {
        super.onCreate()
        Nodle.init(this)
    }
}

After you have verified that you have the required permissions in the manifest and you are initializing Nodle then you can proceed to next steps. When passing (this) to Nodle you will pass your application Context. Like this Nodle will be able to stay alive in your global application state.

Step 5: Run the Nodle SDK

In the onCreate method of your launcher activity start Nodle by giving it the ss58:public_key generated in Step 1:

import io.nodle.sdk.android.Nodle

// start the sdk
Nodle().start("ss58:public_key");

import io.nodle.sdk.android.Nodle

// start the sdk
Nodle().start("ss58:public_key")

You can find more info here: Nodle SDK - Android API and Configuration

Step 6 - Check Permission

The SDK expects a certain number of permission to be set. You must make sure that to request the following permissions from the user:

INTERNET
BLUETOOTH
BLUETOOTH_ADMIN
ACCESS_FINE_LOCATION
ACCESS_COARSE_LOCATION
ACCESS_BACKGROUND_LOCATION - API 29 and ABOVE
BLUETOOTH_SCAN - API 31 (ANDROID 12)
BLUETOOTH_ADVERTISE - API 31 (ANDROID 12)
BLUETOOTH_CONNECT - API 31 (ANDROID 12)

In order for NodleSDK to be able to work while in the background we require the ACCESS_BACKGROUND_LOCATION which Google Play Store has updated it's location policy and require extra steps for verification in Google Play Stores requiring the application developer to submit a video of the permissions usage. If you can't provide the requested usage description you can always strip the permission like this:

<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" tools:node="remove" />

You may use third party libraries to request the permission to the user. For instance you can use the vanniktech library with RxPermission :

RealRxPermission.getInstance(this)
    .requestEach(
            Manifest.permission.INTERNET,
            Manifest.permission.BLUETOOTH,
            Manifest.permission.BLUETOOTH_ADMIN,
            Manifest.permission.ACCESS_COARSE_LOCATION,
            Manifest.permission.ACCESS_FINE_LOCATION)
    .reduce(true, (c, p) -> c && (p.state() == Permission.State.GRANTED))
    .subscribe((granted) -> {
            if (granted) {
               Log.d("Nodle","all the permissions was granted by user");
               Nodle.start("ss58:public_key"); 
            } else {
               Log.d("Nodle","some permission was denied by user");
            }
   });

You can still use the same third-party library for Android 12 by adding the following permissions:

RealRxPermission.getInstance(this)
    .requestEach(
            Manifest.permission.INTERNET,
            Manifest.permission.BLUETOOTH,
            Manifest.permission.BLUETOOTH_ADMIN,
            Manifest.permission.BLUETOOTH_SCAN,
            Manifest.permission.BLUETOOTH_ADVERTISE,
            Manifest.permission.BLUETOOTH_CONNECT,
            Manifest.permission.ACCESS_COARSE_LOCATION,
            Manifest.permission.ACCESS_FINE_LOCATION)
    .reduce(true, (c, p) -> c && (p.state() == Permission.State.GRANTED))
    .subscribe((granted) -> {
            if (granted) {
               Log.d("Nodle","all the permissions was granted by user");
               Nodle.start("ss58:public_key"); 
            } else {
               Log.d("Nodle","some permission was denied by user");
            }
   });

And there you have it! You’re good to go!

Want to check your SDK rewards?

Currently we have our dashboard under development and rewards are not available. If you want see your rewards we have a workaround for you to do that. Please follow the steps:

Install https://polkadot.js.org/extension/
Configure it by creating a dummy account
Go to https://nodleprotocol.io/#/chainstate
Select System -> Accounts

You should see something like this if you have setup the extension properly:

Then you should see you dummy accountId
Click on the dummy accountId and paste your public_key

Then you should only see your public_key

Then click the green + on the right of the screen
Wait a second your rewards should be shown soon

That's it you should see your rewards. Make sure to add all permissions to the SDK in order to see your rewards. We have a lot of traffic so please bear with us since rewards might take a bit of time. But if you allow all the rules in SDK you should see the packets coming to the dashboard. Then rewards should be visible.

NextNodle SDK - Android API and Configuration

Last updated 2 years ago