NetworkLiveData

NetworkLiveData.kt

class NetworkLiveData constructor(private val context: Context?) : LiveData<Boolean>() {

    private lateinit var networkConnectionBroadcastReceiver: NetworkConnectionBroadcastReceiver

    override fun onActive() {
        registerReceiver()
    }

    override fun onInactive() {
        unRegisterReceiver()
    }

    private fun registerReceiver() {
        context?.let {
            val intentFilter = IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION)
            networkConnectionBroadcastReceiver = NetworkConnectionBroadcastReceiver()
            it.registerReceiver(networkConnectionBroadcastReceiver, intentFilter)
        }
    }

    private fun unRegisterReceiver() {
        context?.let {
            it.unregisterReceiver(networkConnectionBroadcastReceiver)
        }
    }

    inner class NetworkConnectionBroadcastReceiver : BaseBroadcastReceiver() {


        private fun isInternetAvailable(context: Context?): Boolean {
            return try {
                val cm = context?.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
                val activeNetwork = cm.activeNetworkInfo
                activeNetwork != null && activeNetwork.isConnectedOrConnecting
            } catch (exception: Exception) {
                false
            }
        }

        override fun onReceive(context: Context?, intent: Intent?) {

            if (intent?.action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
                postValue(isInternetAvailable(context))
            }
        }
    }
}