Android Kotlin utility class for checking device's network connectivity and speed and internet availability. - You may use this with DI system easily.

ConnectivityUtil.kt

package org.dailyislam.android.utilities

import android.content.Context
import android.net.ConnectivityManager
import android.net.NetworkInfo
import android.telephony.TelephonyManager
import java.net.InetAddress


class ConnectivityUtil(private val applicationContext: Context) {
    /**
     * Get the network info
     */
    fun getNetworkInfo(): NetworkInfo {
        val cm = applicationContext.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
        return cm.activeNetworkInfo
    }

    /**
     * Check if there is any connectivity
     */
    fun isConnected(): Boolean {
        val info = getNetworkInfo()
        return info != null && info.isConnected
    }

    /**
     * Check if there is any connectivity to a Wifi network
     */
    fun isConnectedWifi(): Boolean {
        val info = getNetworkInfo()
        return info != null && info.isConnected && info.type == ConnectivityManager.TYPE_WIFI
    }

    /**
     * Check if there is any connectivity to a mobile network
     * @return
     */
    fun isConnectedMobile(): Boolean {
        val info = getNetworkInfo()
        return info != null && info.isConnected && info.type == ConnectivityManager.TYPE_MOBILE
    }

    /**
     * Check if there is fast connectivity
     */
    fun isConnectedFast(): Boolean {
        val info = getNetworkInfo()
        return info != null && info.isConnected && isConnectionFast(info.type, info.subtype)
    }

    /**
     * Check if the connection is fast
     * @param type
     * @param subType
     * @return
     */
    fun isConnectionFast(type: Int, subType: Int): Boolean {
        return if (type == ConnectivityManager.TYPE_WIFI) {
            true
        } else if (type == ConnectivityManager.TYPE_MOBILE) {
            when (subType) {
                TelephonyManager.NETWORK_TYPE_1xRTT -> false // ~ 50-100 kbps
                TelephonyManager.NETWORK_TYPE_CDMA -> false // ~ 14-64 kbps
                TelephonyManager.NETWORK_TYPE_EDGE -> false // ~ 50-100 kbps
                TelephonyManager.NETWORK_TYPE_EVDO_0 -> true // ~ 400-1000 kbps
                TelephonyManager.NETWORK_TYPE_EVDO_A -> true // ~ 600-1400 kbps
                TelephonyManager.NETWORK_TYPE_GPRS -> false // ~ 100 kbps
                TelephonyManager.NETWORK_TYPE_HSDPA -> true // ~ 2-14 Mbps
                TelephonyManager.NETWORK_TYPE_HSPA -> true // ~ 700-1700 kbps
                TelephonyManager.NETWORK_TYPE_HSUPA -> true // ~ 1-23 Mbps
                TelephonyManager.NETWORK_TYPE_UMTS -> true // ~ 400-7000 kbps
                TelephonyManager.NETWORK_TYPE_EHRPD -> true // ~ 1-2 Mbps
                TelephonyManager.NETWORK_TYPE_EVDO_B -> true // ~ 5 Mbps
                TelephonyManager.NETWORK_TYPE_HSPAP -> true // ~ 10-20 Mbps
                TelephonyManager.NETWORK_TYPE_IDEN -> false // ~25 kbps
                TelephonyManager.NETWORK_TYPE_LTE -> true // ~ 10+ Mbps
                TelephonyManager.NETWORK_TYPE_UNKNOWN -> false
                else -> false
            }
        } else {
            false
        }
    }

    fun isInternetAvailable(): Boolean {
        return try {
            val address : InetAddress = InetAddress.getByName("google.com")
            //You can replace it with your name
            !address.equals("")
        } catch (e: Exception) {
            false
        }
    }
}