HomeFragment Bound Service

HomeFragmentBoundService.kt

package com.alokomkar.activity

import android.content.ComponentName
import android.content.Context
import android.content.Intent
import android.content.ServiceConnection
import android.os.Bundle
import android.os.IBinder
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Toast
import androidx.appcompat.widget.AppCompatButton
import androidx.core.content.ContextCompat
import androidx.fragment.app.Fragment
import androidx.fragment.app.viewModels
import com.alokomkar.javacollections.R
import com.alokomkar.service.AudioForegroundLoopService
import com.alokomkar.service.AudioLoopBoundService
import com.alokomkar.service.AudioLoopService
import com.alokomkar.service.ServiceAction
import com.alokomkar.viewmodel.HomeViewModel

class HomeFragment: Fragment() {

   ...

    private val audioLoopBoundServiceIntent: Intent by lazy {
        Intent(
            context,
            AudioLoopBoundService::class.java
        )
    }

    private var audioLoopBoundService: AudioLoopBoundService? = null

    private val boundServiceConnection by lazy {
        object : ServiceConnection {
            override fun onServiceConnected(className: ComponentName, service: IBinder) {
                val binder: AudioLoopBoundService.AudioLoopServiceBinder = service as AudioLoopBoundService.AudioLoopServiceBinder
                audioLoopBoundService = binder.getService()
                viewModel.isAudioServiceBound = true
            }

            override fun onServiceDisconnected(arg0: ComponentName) {
                audioLoopBoundService?.runAction(ServiceAction.STOP_ACTION)
                audioLoopBoundService = null
                viewModel.isAudioServiceBound = false
            }
        }
    }

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_home, container, false)
    }

    override fun onStart() {
        super.onStart()
        // bind to service if it isn't bound
        if (!viewModel.isAudioServiceBound) bindToAudioService()
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        view.apply {
            ...

            findViewById<AppCompatButton>(R.id.startButtonBoundService).setOnClickListener {
                sendCommandToBoundService(ServiceAction.START_ACTION)
            }

            findViewById<AppCompatButton>(R.id.stopButtonBoundService).setOnClickListener {
                sendCommandToBoundService(ServiceAction.STOP_ACTION)
            }
        }
    }

    private fun sendCommandToBoundService(action: ServiceAction) {
        if(viewModel.isAudioServiceBound) {
            audioLoopBoundService?.runAction(action)
        }
        else Toast.makeText(
            context,
            "Service not bound yet",
            Toast.LENGTH_SHORT
        ).show()
    }

    override fun onDestroy() {
        super.onDestroy()
        unbindAudioService()
    }

    private fun unbindAudioService() {
        if(viewModel.isAudioServiceBound) {
            audioLoopBoundService?.runAction(ServiceAction.STOP_ACTION)
            context?.unbindService(boundServiceConnection)
        }
    }

    private fun bindToAudioService() {
        context?.bindService(
            audioLoopBoundServiceIntent,
            boundServiceConnection,
            Context.BIND_AUTO_CREATE
        )
    }

   ...

}