I’ve done a lot of research on this subject but i couldn’t find a helpful resource. I would like to create an Android application on Android Studio that listens to Can-Bus line and runs only in the background without a user interface. I need to use J1939 library for this, but i don’t know how to ensure communication. How to finf the library related to J1939? I would be glad if you help. Thank you.

//CanBusService.java;

package com.example.j1939_android3; import android.app.Service; import android.content.Intent; import android.os.IBinder; import android.util.Log;

public class CanBusService extends Service {

    @Override public void onCreate() { super.onCreate(); Log.d("CanBusService", "Service created"); Initialize CAN bus communication here Add your CAN bus communication logic
    }

    @Override public int onStartCommand(Intent intent, int flags, int startId) { Log.d("CanBusService", "Service started"); Start listening to the CAN bus startListeningToCanBus(); return START_STICKY;
    }

private void startListeningToCanBus() { Implement CAN bus listening logic here This method will run in the background
    }

    @Override public IBinder onBind(Intent intent) { Return null because this service is not meant to be bound return null;
    } }

//CanBusHandler.java:

package com.example.j1939_android3;

import android.app.Service; import android.content.Intent; import android.os.IBinder; import android.util.Log;

public class CanBusService extends Service {

    @Override public void onCreate() { super.onCreate(); Log.d("CanBusService", "Service created"); Initialize CAN bus communication here Add your CAN bus communication logic
    }

    @Override public int onStartCommand(Intent intent, int flags, int startId) { Log.d("CanBusService", "Service started"); Start listening to the CAN bus startListeningToCanBus(); return START_STICKY;
    }

private void startListeningToCanBus() { Implement CAN bus listening logic here This method will run in the background
    }

    @Override public IBinder onBind(Intent intent) { Return null because this service is not meant to be bound return null;
    } }

//CanBusApplication.java:

package com.example.j1939_android3;

import android.app.Service; import android.content.Intent; import android.os.IBinder; import android.util.Log;

public class CanBusService extends Service {

    @Override public void onCreate() { super.onCreate(); Log.d("CanBusService", "Service created"); Initialize CAN bus communication here Add your CAN bus communication logic
    }

    @Override public int onStartCommand(Intent intent, int flags, int startId) { Log.d("CanBusService", "Service started"); Start listening to the CAN bus startListeningToCanBus(); return START_STICKY;
    }

private void startListeningToCanBus() { Implement CAN bus listening logic here This method will run in the background
    }

    @Override public IBinder onBind(Intent intent) { Return null because this service is not meant to be bound return null;
    } }

////////AndroidManifest:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools">

    <uses-feature android:name="android.hardware.usb.host" />
    <uses-permission android:name="android.permission.USB_DEVICE" />

    <application android:allowBackup="true" android:dataExtractionRules="@xml/data_extraction_rules" android:fullBackupContent="@xml/backup_rules" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/Theme.J1939_Android3" tools:targetApi="31">

        <activity android:name=".CanBusApplication" android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <service android:name=".CanBusService" android:exported="false">
        </service>
    </application>

</manifest>

I’ve done a lot of research on this subject but i couldn’t find a helpful resource. I would like to create an Android application on Android Studio that listens to Can-Bus line and runs only in the background without a user interface. I need to use J1939 library for this, but i don’t know how to ensure communication. How to finf the library related to J1939?