android – activeNetworkInfo.type is deprecated in API level 28-ThrowExceptions

Exception or error:

enter image description hereI want to use the Connectivity manager which provide the method activeNetworkInfo.type for checking the type of network in Android. This method was deprecated in API level 28. so what is the solution to check network type in API 28. my code is :

/**
 * Check Wi Fi connectivity
 */
fun isWiFiConnected(context: Context): Boolean {
    val connManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
    return connManager.activeNetworkInfo.type == ConnectivityManager.TYPE_WIFI
}

My Gradle is like :

compileSdkVersion 28
buildToolsVersion '28.0.3'
defaultConfig {
        minSdkVersion 21
        targetSdkVersion 28
    }
How to solve:

UPDATE

The connectivityManager.activeNetworkInfo is also deprecated in API level 29

Now we need to use ConnectivityManager.NetworkCallback API
or ConnectivityManager#getNetworkCapabilities or ConnectivityManager#getLinkProperties

SAMPLE CODE USING ConnectivityManager#getNetworkCapabilities

private fun isInternetAvailable(context: Context): Boolean {
        var result = false
        val connectivityManager =
            context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            val networkCapabilities = connectivityManager.activeNetwork ?: return false
            val actNw =
                connectivityManager.getNetworkCapabilities(networkCapabilities) ?: return false
            result = when {
                actNw.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
                actNw.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> true
                actNw.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> true
                else -> false
            }
        } else {
            connectivityManager.run {
                connectivityManager.activeNetworkInfo?.run {
                    result = when (type) {
                        ConnectivityManager.TYPE_WIFI -> true
                        ConnectivityManager.TYPE_MOBILE -> true
                        ConnectivityManager.TYPE_ETHERNET -> true
                        else -> false
                    }

                }
            }
        }

        return result
    }

OLD ANSWER

Yes getType() is deprecated in API lavel 28

Now we need to use Use Callers should switch to checking NetworkCapabilities.hasTransport(int)

Also getAllNetworkInfo() is deprecated in API level 29

Now we need to use Use getAllNetworks() instead of getNetworkInfo(android.net.Network) .

getNetworkInfo()

  • Returns connection status information about a particular Network.

getAllNetworks()

  • Returns an array of all Network currently tracked by the framework.

SAMPLE CODE

fun isWiFiConnected(context: Context): Boolean {
    val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
    return if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
        val network = connectivityManager.activeNetwork
        val capabilities = connectivityManager.getNetworkCapabilities(network)
        capabilities != null && capabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)
    } else {
        connectivityManager.activeNetworkInfo.type == ConnectivityManager.TYPE_WIFI
    }
}

COMPLETE CODE

@Suppress("DEPRECATION")
fun isInternetAvailable(context: Context): Boolean {
    var result = false
    val cm = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager?
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        cm?.run {
            cm.getNetworkCapabilities(cm.activeNetwork)?.run {
                result = when {
                    hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
                    hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> true
                    hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> true
                    else -> false
                }
            }
        }
    } else {
        cm?.run {
            cm.activeNetworkInfo?.run {
                if (type == ConnectivityManager.TYPE_WIFI) {
                    result = true
                } else if (type == ConnectivityManager.TYPE_MOBILE) {
                    result = true
                }
            }
        }
    }
    return result
}

###

No, as seen from here: https://developer.android.com/reference/android/net/ConnectivityManager.html#getActiveNetworkInfo()

getActiveNetworkInfo() is still available in Android API 28, and nowhere says it is deprecated.

But the one deprecated is getType() of NetworkInfo class.

https://developer.android.com/reference/android/net/NetworkInfo#getType()

This method was deprecated in API level 28.

Callers should switch to checking
NetworkCapabilities.hasTransport(int) instead with one of the
NetworkCapabilities#TRANSPORT_* constants : getType() and
getTypeName() cannot account for networks using multiple transports.
Note that generally apps should not care about transport;
NetworkCapabilities.NET_CAPABILITY_NOT_METERED and
NetworkCapabilities.getLinkDownstreamBandwidthKbps() are calls that
apps concerned with meteredness or bandwidth should be looking at, as
they offer this information with much better accuracy.

###

Here is my solution for SDK 29: A class called NetworkWatcher which observes the changes of the network. It offers primitive variables such as isWifiOn and the option to observe network changes over time via Flow and LiveData.

@ExperimentalCoroutinesApi
class NetworkWatcher
@RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
private constructor(
    application: Application
) {

    private val connectivityManager =
        application.applicationContext.getSystemService(Context.CONNECTIVITY_SERVICE)
                as ConnectivityManager

    // general availability of Internet over any type
    var isOnline = false
        get() {
            updateFields()
            return field
        }

    var isOverWifi = false
        get() {
            updateFields()
            return field
        }

    var isOverCellular = false
        get() {
            updateFields()
            return field
        }

    var isOverEthernet = false
        get() {
            updateFields()
            return field
        }

    companion object {
        @Volatile
        private var INSTANCE: NetworkWatcher? = null

        fun getInstance(application: Application): NetworkWatcher {
            synchronized(this) {
                if (INSTANCE == null) {
                    INSTANCE = NetworkWatcher(application)
                }
                return INSTANCE!!
            }
        }
    }

    @Suppress("DEPRECATION")
    private fun updateFields() {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {

            val networkAvailability =
                connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)

            if (networkAvailability != null &&
                networkAvailability.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) &&
                networkAvailability.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
            ) {
                //has network
                isOnline = true

                // wifi
                isOverWifi =
                    networkAvailability.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)

                // cellular
                isOverCellular =
                    networkAvailability.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)

                // ethernet
                isOverEthernet =
                    networkAvailability.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET)
            } else {
                isOnline = false
                isOverWifi = false
                isOverCellular = false
                isOverEthernet = false
            }
        } else {

            val info = connectivityManager.activeNetworkInfo
            if (info != null && info.isConnected) {
                isOnline = true

                val wifi = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
                isOverWifi = wifi != null && wifi.isConnected

                val cellular = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE)
                isOverCellular = cellular != null && cellular.isConnected

                val ethernet = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_ETHERNET)
                isOverEthernet = ethernet != null && ethernet.isConnected

            } else {
                isOnline = false
                isOverWifi = false
                isOverCellular = false
                isOverEthernet = false
            }
        }
    }

    fun watchNetwork(): Flow<Boolean> = watchWifi()
        .combine(watchCellular()) { wifi, cellular -> wifi || cellular }
        .combine(watchEthernet()) { wifiAndCellular, ethernet -> wifiAndCellular || ethernet }

    fun watchNetworkAsLiveData(): LiveData<Boolean> = watchNetwork().asLiveData()

    fun watchWifi(): Flow<Boolean> = callbackFlowForType(NetworkCapabilities.TRANSPORT_WIFI)

    fun watchWifiAsLiveData() = watchWifi().asLiveData()

    fun watchCellular(): Flow<Boolean> = callbackFlowForType(NetworkCapabilities.TRANSPORT_CELLULAR)

    fun watchCellularAsLiveData() = watchCellular().asLiveData()

    fun watchEthernet(): Flow<Boolean> = callbackFlowForType(NetworkCapabilities.TRANSPORT_ETHERNET)

    fun watchEthernetAsLiveData() = watchEthernet().asLiveData()

    private fun callbackFlowForType(@IntRange(from = 0, to = 7) type: Int) = callbackFlow {

        offer(false)

        val networkRequest = NetworkRequest.Builder()
            .addTransportType(type)
            .build()

        val callback = object : ConnectivityManager.NetworkCallback() {
            override fun onLost(network: Network?) {
                offer(false)
            }

            override fun onUnavailable() {
                offer(false)
            }

            override fun onLosing(network: Network?, maxMsToLive: Int) {
                // do nothing
            }

            override fun onAvailable(network: Network?) {
                offer(true)
            }
        }

        connectivityManager.registerNetworkCallback(networkRequest, callback)

        awaitClose { connectivityManager.unregisterNetworkCallback(callback) }
    }
}

For instance, you could subscribe to updates about the network state of the phone in your Application such as:

GlobalScope.launch {
    NetworkWatcher.getInstance(this@MyApplication).watchNetwork().collect { connected ->
        Log.d("TAG", "Network In App: $connected")
    }
}

Or to answer your question, simply read the Wifi value such as:

if (NetworkWatcher.getInstance(this@BaseApp).isOverWifi) {
    // do stuff
}

Side note: Rather than using getInstance() all the time, I use a DI framework such as Koin to inject the NetworkWatcher where I need it.

###

I have adapted Nilesh Rathod’s answer for my needs:

enum class ConnectivityMode {
    NONE,
    WIFI,
    MOBILE,
    OTHER,
    MAYBE
}

var connectivityMode = ConnectivityMode.NONE

private fun checkConnectivity(context: Context): ConnectivityMode {

    val cm = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager

    cm?.run {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            getNetworkCapabilities(activeNetwork)?.run {
                return when {
                    hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> ConnectivityMode.WIFI
                    hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> ConnectivityMode.MOBILE
                    hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> ConnectivityMode.OTHER
                    hasTransport(NetworkCapabilities.TRANSPORT_BLUETOOTH) -> ConnectivityMode.MAYBE
                    else -> ConnectivityMode.NONE
                }
            }
        } else {
            @Suppress("DEPRECATION")
            activeNetworkInfo?.run {
                return when (type) {
                    ConnectivityManager.TYPE_WIFI -> ConnectivityMode.WIFI
                    ConnectivityManager.TYPE_MOBILE -> ConnectivityMode.MOBILE
                    ConnectivityManager.TYPE_ETHERNET -> ConnectivityMode.OTHER
                    ConnectivityManager.TYPE_BLUETOOTH -> ConnectivityMode.MAYBE
                    else -> ConnectivityMode.NONE
                }
            }
        }
    }
    return ConnectivityMode.NONE
}

Then I check the connection with okhttp:

fun updateData(manual: Boolean, windowContext: Context) = runBlocking {
    connectivityMode = checkConnectivity(MyApplication.context)
    if (connectivityMode != ConnectivityMode.NONE) {
        val conn : Boolean = GlobalScope.async {
            var retval = false
            try {
                val request = Request.Builder().url(WORK_URL).build()
                val response =  client.newCall(request).execute()
                Log.i(TAG, "code = ${response?.code}")
                if (response?.code == 200) {
                    // I use the response body since it is a small file and already downloaded
                    val input = response.body?.byteStream()
                    if (input != null) {
                        // do stuff
                        response.body?.close()
                        retval = true
                    }
                }
            }
            catch(exception: Exception) {
                Log.e(TAG, "error ${exception.message ?: ""}")
            }
            retval
        }.await()
        if (!conn) {
            connectivityMode = ConnectivityMode.NONE
        }
    }
    ....

###

Java Code:

public static boolean isConnectingToInternet(Context mContext) {
    if (mContext == null) return false;

    ConnectivityManager connectivityManager = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
    if (connectivityManager != null) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            final Network network = connectivityManager.getActiveNetwork();
            if (network != null) {
                final NetworkCapabilities nc = connectivityManager.getNetworkCapabilities(network);

                return (nc.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) ||
                        nc.hasTransport(NetworkCapabilities.TRANSPORT_WIFI));
            }
        } else {
            NetworkInfo[] networkInfos = connectivityManager.getAllNetworkInfo();
            for (NetworkInfo tempNetworkInfo : networkInfos) {
                if (tempNetworkInfo.isConnected()) {
                    return true;
                }
            }
        }
    }
    return false;
}

###

If you use min API level 23, you can use this shortened Kotlin version.

fun isNetworkAvailable(context: Context): Boolean {
    (context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager).apply {
        return getNetworkCapabilities(activeNetwork)?.run {
            when {
                hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
                hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> true
                hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> true
                else -> false
            }
        } ?: false
    }
}

###

Recently I had to write a small function for checking the network connectivity inside my singular WebView. I’ve also noticed that the API much evolved and especially when Kotlin came in so to find valid reference took some minutes.

Here is my small NetworkConnectivityManager class with a simple function for checking network availability.

import android.content.Context
import android.content.Context.CONNECTIVITY_SERVICE
import android.net.ConnectivityManager
import android.net.NetworkCapabilities
import android.os.Build

class NetworkConnectivityManager(context: Context) {
    private val connectivityManager =
        context.getSystemService(CONNECTIVITY_SERVICE) as ConnectivityManager

    @Suppress("DEPRECATION")
    fun isNetworkAvailable(): Boolean {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            val nc = connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)

            nc != null 
                    && nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
                    && nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
        }

        val networkInfo = connectivityManager.activeNetworkInfo
        return networkInfo != null && networkInfo.isConnected
    }
}

###

I just wanted to know, if the device is connected to the internet, regardless of the type of connection:

@Suppress("DEPRECATION")
fun isOnline(context: Context?): Boolean {
    var connected = false
    @Suppress("LiftReturnOrAssignment")
    context?.let {
        val cm = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            val networkCapabilities = cm.activeNetwork ?: return false
            val actNw = cm.getNetworkCapabilities(networkCapabilities) ?: return false
            connected = actNw.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
        } else {
            val netInfo = cm.activeNetworkInfo
            connected = netInfo?.isConnectedOrConnecting == true
        }
    }
    return connected
}

###

I am using this Kotlin func to check internet connection:

Be careful about version checking (Version >= M)

private fun isInternetConnected():Boolean{

    val connectivityManager = this.getSystemService(android.content.Context.CONNECTIVITY_SERVICE)
            as ConnectivityManager

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        val networkCapabilities = connectivityManager.activeNetwork ?: return false
        val activeNetwork = connectivityManager.getNetworkCapabilities(networkCapabilities) ?: return false

        return when {

            activeNetwork.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) ||
                    activeNetwork.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) ||
                    activeNetwork.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
            else -> false
        }
    }
    else {
        return connectivityManager.activeNetworkInfo != null &&
                connectivityManager.activeNetworkInfo!!.isConnectedOrConnecting
    }
}

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