Check Network Connection With LiveData

dependency

• for live data

implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.7.0")

manifest.xml

• add Permissions that need to be use inside application.

<?xml version="1.0" encoding="utf-8"?>
<manifest 
			...>

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  
    ....

CheckConnecation.kt

• create class that will extend live data of boolean type.

• so we can set an observer on that and and perform action based on that.

package com.example.service_project.presentation.services

import android.app.Application
import android.content.Context
import android.net.ConnectivityManager
import android.net.Network
import android.net.NetworkRequest
import androidx.lifecycle.LiveData

class CheckConnection(private var cm: ConnectivityManager) : LiveData<Boolean>() {

    constructor(application: Application) : this(
        application.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
    )

    private val networkCallback = object : ConnectivityManager.NetworkCallback() {
        override fun onAvailable(network: Network) {
            super.onAvailable(network)
            postValue(true)
        }

        override fun onLost(network: Network) {
            super.onLost(network)
            postValue(false)
        }

    }

    override fun onActive() {
        super.onActive()
        val request = NetworkRequest.Builder()
        cm.registerNetworkCallback(request.build(), networkCallback)
    }

    override fun onInactive() {
        super.onInactive()
        cm.unregisterNetworkCallback(networkCallback)
    }
}

set An Observer

 checkConnection.observe(requireActivity()) {
          if (it) {
              // action to perform when connected to network

          } else {
              // action to perform when not connected to network

          }
      }