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March 16, 2020 10:56
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Class to check the Connectivity and Internet Access of an Android device.
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| /* | |
| * Copyright (c) 2017 Emil Davtyan | |
| * | |
| * Permission is hereby granted, free of charge, to any person obtaining | |
| * a copy of this software and associated documentation files (the | |
| * "Software"), to deal in the Software without restriction, including | |
| * without limitation the rights to use, copy, modify, merge, publish, | |
| * distribute, sublicense, and/or sell copies of the Software, and to | |
| * permit persons to whom the Software is furnished to do so, subject to | |
| * the following conditions: | |
| * | |
| * The above copyright notice and this permission notice shall be | |
| * included in all copies or substantial portions of the Software. | |
| * | |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | |
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | |
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| * | |
| * Copyright (c) 2020 Rodrigo Sambade | |
| * | |
| * Permission is hereby granted, free of charge, to any person obtaining | |
| * a copy of this software and associated documentation files (the | |
| * "Software"), to deal in the Software without restriction, including | |
| * without limitation the rights to use, copy, modify, merge, publish, | |
| * distribute, sublicense, and/or sell copies of the Software, and to | |
| * permit persons to whom the Software is furnished to do so, subject to | |
| * the following conditions: | |
| * | |
| * The above copyright notice and this permission notice shall be | |
| * included in all copies or substantial portions of the Software. | |
| * | |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | |
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | |
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| * License: MIT | |
| * http://opensource.org/licenses/MIT | |
| * Forked from https://gist.github.com/str4d/22cac7a3f70bc227cdca, which was forked | |
| * from https://gist.github.com/emil2k/5130324 */ | |
| @file:Suppress("DEPRECATION", "UNUSED") | |
| package net.i2p.android.router.util | |
| import android.annotation.SuppressLint | |
| import android.annotation.TargetApi | |
| import android.content.Context | |
| import android.net.ConnectivityManager | |
| import android.net.Network | |
| import android.net.NetworkCapabilities | |
| import android.net.NetworkInfo | |
| import android.os.AsyncTask | |
| import android.os.Build | |
| import android.os.Build.VERSION_CODES | |
| import android.provider.Settings | |
| import android.telephony.TelephonyManager | |
| import android.util.Log | |
| import java.io.IOException | |
| import java.lang.UnsupportedOperationException | |
| import java.net.InetSocketAddress | |
| import java.net.Socket | |
| import java.net.UnknownHostException | |
| import java.nio.channels.IllegalBlockingModeException | |
| import java.util.* | |
| import java.util.concurrent.CancellationException | |
| /** | |
| * Check device's network connectivity and speed. Check Internet access * | |
| * @author rodrigo https://stackoverflow.com/users/5520417/rodrigo | |
| */ | |
| class ConnectivityAndInternetAccess(hosts: ArrayList<String>) { | |
| /** | |
| * Gets the hosts | |
| * @return The hosts | |
| */ | |
| /** | |
| * Adjusts the value of the hosts | |
| * @param hosts The hosts | |
| */ | |
| private var hosts: ArrayList<String> = hosts | |
| private set(hosts) { | |
| Companion.hosts = hosts | |
| field = hosts | |
| } | |
| /** | |
| * Checks that Internet is available. Network calls shouldn't be called from main thread otherwise it will throw @link{[android.os.NetworkOnMainThreadException]} | |
| */ | |
| private class InternetConnectionCheck internal constructor(context: Context?) : AsyncTask<Void?, Void?, Boolean>() { | |
| /** | |
| * Delivers the context | |
| */ | |
| /** | |
| * Adjusts the value of the field that stores the context | |
| * @param context The context | |
| */ | |
| @SuppressLint("StaticFieldLeak") | |
| var context: Context? = null | |
| /** | |
| * Cancels the activity if the device is not connected to a network. | |
| */ | |
| override fun onPreExecute() { | |
| if (!isConnected(context)) { | |
| cancel(true) | |
| } | |
| } | |
| /** | |
| * Creates an instance of this class | |
| * @param context The context | |
| */ | |
| init { | |
| this.context = context | |
| } | |
| /** | |
| * Tells whether there is Internet access | |
| * @param voids The list of arguments | |
| * @return @code{true} if Internet can be accessed | |
| */ | |
| override fun doInBackground(vararg voids: Void?): Boolean { | |
| return isConnectedToInternet(context) | |
| } | |
| } | |
| companion object { | |
| //------------------------------------------- Connectivity -------------------------------------------------------------------------- | |
| /** | |
| * Gets the minimum speed for fast connection | |
| * @return The minimum speed for fast connection | |
| */ | |
| /** | |
| * The minimum speed for the connection to be considered fast | |
| * | |
| */ | |
| private const val minimumSpeedForFastConnection = 3072 | |
| /** | |
| * Get the active network's info. | |
| * | |
| * @param context The Context. | |
| * @return The active NetworkInfo. | |
| */ | |
| private fun getActiveNetworkInfo(context: Context): NetworkInfo? { | |
| var networkInfo: NetworkInfo? = null | |
| val cm = context | |
| .getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager | |
| if (cm != null) { | |
| networkInfo = cm.activeNetworkInfo | |
| } | |
| return networkInfo | |
| } | |
| /** | |
| * Get active network. | |
| * | |
| * @param context The Context. | |
| * @return The active NetworkInfo. | |
| * @throws UnsupportedOperationException in case this function is running on | |
| * an Android version lower than Marshmallow | |
| */ | |
| private fun getActiveNetwork(context: Context): Network? { | |
| var networkInfo: Network? = null | |
| val cm = context | |
| .getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager | |
| if (cm != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.M) { | |
| networkInfo = cm.activeNetwork | |
| } else { | |
| Log.e("UnusableMethod", "Cannot use this method for the current API Level") | |
| throw UnsupportedOperationException("Cannot use this method for the" + | |
| " current API Level") | |
| } | |
| } | |
| return networkInfo | |
| } | |
| /** | |
| * Get the network info. | |
| * | |
| * @param context The Context. | |
| * @return The active NetworkInfo. | |
| */ | |
| private fun getActiveNetworkInfo(context: Context, network: Network?): NetworkInfo? { | |
| var networkInfo: NetworkInfo? = null | |
| val cm = context | |
| .getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager | |
| if (cm != null && network != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { | |
| networkInfo = cm.getNetworkInfo(network) | |
| } else { | |
| Log.e("UnusableMethod", "Cannot use this method for the current API Level") | |
| throw UnsupportedOperationException("Cannot use this method for the current API Level") | |
| } | |
| } | |
| return networkInfo | |
| } | |
| /** | |
| * Gets the info of all networks | |
| * @param context The context | |
| * @return An array of @link {NetworkInfo} | |
| * @throws UnsupportedOperationException if this function is running on an | |
| * Android version higher than or equal to Marshmallow | |
| */ | |
| private fun getAllNetworkInfo(context: Context?): Array<NetworkInfo?> { | |
| val cm = context | |
| ?.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager | |
| var nwInfo = arrayOfNulls<NetworkInfo>(0) | |
| if (cm != null) { | |
| if (Build.VERSION.SDK_INT < VERSION_CODES.M) { | |
| nwInfo = cm.allNetworkInfo | |
| } else { | |
| Log.e("UnusableMethod", "Cannot use this method for the current API Level") | |
| } | |
| } | |
| return nwInfo | |
| } | |
| /** | |
| * Gives the connectivity manager | |
| * @param context The context | |
| * @return the @code{[ConnectivityManager]} | |
| */ | |
| private fun getConnectivityManager(context: Context?): ConnectivityManager { | |
| return context!!.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager | |
| } | |
| /** | |
| * Tells whether the network is facilitating fast network switching | |
| * @param context The context. | |
| * @param network The network. | |
| * @return @code{true} if the network is facilitating fast network switching | |
| * @throws UnsupportedOperationException if this function is running on an | |
| * Android version lower than Pie | |
| */ | |
| private fun isNetworkFacilitatingFastNetworkSwitching(context: Context, | |
| network: Network): Boolean { | |
| var isNetworkFacilitatingFastNetworkSwitching = false | |
| val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| val networkCapabilities = connectivityManager.getNetworkCapabilities(network) | |
| if (!networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) { | |
| isNetworkFacilitatingFastNetworkSwitching = true | |
| } | |
| } else { | |
| Log.e("UnusableMethod", null) | |
| } | |
| return isNetworkFacilitatingFastNetworkSwitching | |
| } | |
| /** | |
| * Tells whether the network can be used by apps | |
| * @param context The context. | |
| * @param network The network. | |
| * @return @code{true} if the network can by used by apps | |
| * @throws UnsupportedOperationException if this function is running on an | |
| * Android version lower than Pie | |
| */ | |
| private fun isNetworkUsableByApps(context: Context, network: Network): Boolean { | |
| var isNetworkUsableByApps = false | |
| val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| val networkCapabilities = connectivityManager.getNetworkCapabilities(network) | |
| if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) { | |
| isNetworkUsableByApps = true | |
| } | |
| } else { | |
| Log.e("UnusableMethod", null) | |
| throw UnsupportedOperationException("Cannot use this method for the" + | |
| " current API Level") | |
| } | |
| return isNetworkUsableByApps | |
| } | |
| /** | |
| * Tells whether the specified network is suspended | |
| * @param context The context | |
| * @param network The network | |
| * @throws UnsupportedOperationException If this function is running on an | |
| * Android version lower than Pie | |
| */ | |
| private fun isNetworkSuspended(context: Context, network: Network): Boolean { | |
| var isNetworkSuspended = false | |
| val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| val networkCapabilities = connectivityManager.getNetworkCapabilities(network) | |
| if (!networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)) { | |
| isNetworkSuspended = true | |
| } | |
| } else { | |
| Log.e("UnusableMethod", null) | |
| throw UnsupportedOperationException("Cannot use this method for the" + | |
| " current API Level") | |
| } | |
| return isNetworkSuspended | |
| } | |
| /** | |
| * Check if there is any connectivity at all to a specific network. | |
| * | |
| * @param context The Context. | |
| * @return @code{true} if we are connected to a network, false otherwise. | |
| * @link{NetworkCapabilities} or @link{Network} object is found | |
| */ | |
| fun isActiveNetworkConnected(context: Context): Boolean { | |
| var isConnected = false | |
| val connectivityManager = getConnectivityManager(context) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { | |
| val network = getActiveNetwork(context) | |
| if (network != null) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (networkCapabilities != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if (networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_INTERNET) /* API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED) /*API >= 28*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) /*API >= 28*/ { | |
| isConnected = true | |
| } | |
| } | |
| } | |
| } else { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.M) { | |
| if (networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/) { | |
| isConnected = true | |
| } | |
| } else { | |
| if (networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/) { | |
| isConnected = true | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", null) | |
| } | |
| } else { | |
| Log.e("NullNetwork", null) | |
| } | |
| } else { | |
| val info = getActiveNetworkInfo(context) | |
| /* | |
| Works on emulator and devices. Note the use of @link{NetworkInfo | |
| .isAvailable} - without this, @link{NetworkInfo.isConnected} can return | |
| @code{true} when Wi-Fi is disabled (http://stackoverflow.com/a/2937915) | |
| */isConnected = info != null && info.isAvailable && info.isConnected | |
| } | |
| return isConnected | |
| } | |
| /** | |
| * Check if there is any connectivity at all to a specific network. | |
| * | |
| * @param context The Context. | |
| * @param network The network | |
| * @return @code{true} if we are connected to a network, false otherwise. | |
| */ | |
| fun isConnected(context: Context, network: Network?): Boolean { | |
| var isConnected = false | |
| val connectivityManager = getConnectivityManager(context) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /* API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED) /*API >= 28*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) /*API >= 28*/ { | |
| isConnected = true | |
| } | |
| } | |
| else { | |
| Log.e("Unusable method", "null NetworkCapabilities") | |
| } | |
| } | |
| else { | |
| Log.e("UnusableMethod", "null Network") | |
| } | |
| } else { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.M) { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/ | |
| && networkCapabilities!!.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/) { | |
| isConnected = true | |
| } | |
| } else { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/) { | |
| isConnected = true | |
| } | |
| } | |
| } | |
| } else { | |
| val info = getActiveNetworkInfo(context) | |
| /* | |
| Works on emulator and devices. Note the use of @link{NetworkInfo | |
| .isAvailable} - without this, @link{NetworkInfo.isConnected} can return | |
| @code{true} when Wi-Fi is disabled (http://stackoverflow.com/a/2937915) | |
| */isConnected = info != null && info.isAvailable && info.isConnected | |
| } | |
| return isConnected | |
| } | |
| /** | |
| * Check if there is any connectivity at all. | |
| * | |
| * @param context the Context. | |
| * @return @code{true} if we are connected to a network, false otherwise. | |
| */ | |
| @JvmStatic | |
| fun isConnected(context: Context?): Boolean { | |
| var isConnected = false | |
| val connectivityManager = getConnectivityManager(context) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { | |
| val networks = connectivityManager.allNetworks | |
| for (network in networks) { | |
| if (network != null) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (networkCapabilities != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| if ((networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /* API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /* API >= 23*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)) /* API >= 28*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) /* API >= 28*/ { | |
| isConnected = true | |
| break | |
| } | |
| } else { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.M) { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/) { | |
| isConnected = true | |
| break | |
| } | |
| } else { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/) { | |
| isConnected = true | |
| break | |
| } | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", null) | |
| } | |
| } else { | |
| Log.e("NullNetwork", null) | |
| } | |
| } | |
| } else { | |
| val infos = getAllNetworkInfo(context) | |
| for (info in infos) { /* | |
| Works on emulator and devices. Note the use of @link{NetworkInfo | |
| .isAvailable} - without this, @link{NetworkInfo.isConnected} can | |
| return @code{true} when Wi-Fi is disabled (http://stackoverflow | |
| .com/a/2937915) | |
| */ | |
| isConnected = info != null && info.isAvailable && info.isConnected | |
| if (isConnected) { | |
| break | |
| } | |
| } | |
| } | |
| return isConnected | |
| } | |
| /** | |
| * Check if there is any connectivity to a Wifi network. | |
| * | |
| * @param context the Context. | |
| * @return @code{true} if we are connected to a Wifi network, false otherwise. | |
| */ | |
| fun isConnectedWifi(context: Context?): Boolean { | |
| var isConnectedWifi = false | |
| val connectivityManager = getConnectivityManager(context) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { | |
| val networks = connectivityManager.allNetworks | |
| for (network in networks) { | |
| if (network != null) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (networkCapabilities != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if ((networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_INTERNET) /* API >= 21*/ | |
| && networkCapabilities | |
| .hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API>=23*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)) /*API>=28*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) /*API>=28*/ { | |
| if (networkCapabilities.hasTransport( | |
| NetworkCapabilities.TRANSPORT_WIFI)) { | |
| isConnectedWifi = true | |
| break | |
| } | |
| } | |
| } | |
| } | |
| } else { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.M) { | |
| if (networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/) { | |
| if (networkCapabilities.hasTransport( | |
| NetworkCapabilities.TRANSPORT_WIFI)) { | |
| isConnectedWifi = true | |
| break | |
| } | |
| } | |
| } else { | |
| if (networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/) { | |
| if (networkCapabilities.hasTransport( | |
| NetworkCapabilities.TRANSPORT_WIFI)) { | |
| isConnectedWifi = true | |
| break | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", null) | |
| } | |
| } else { | |
| Log.e("NullNetwork", null) | |
| } | |
| } | |
| } else { | |
| val infos = getAllNetworkInfo(context) | |
| for (info in infos) { /* | |
| Works on emulator and devices. Note the use of @link{NetworkInfo | |
| .isAvailable} - without this, @link{NetworkInfo.isConnected} can | |
| return @code{true} when Wi-Fi is disabled (http://stackoverflow | |
| .com/a/2937915) | |
| */ | |
| isConnectedWifi = (info != null && info.isAvailable && info.isConnected | |
| && info.type == ConnectivityManager.TYPE_WIFI) | |
| if (isConnectedWifi) { | |
| break | |
| } | |
| } | |
| } | |
| return isConnectedWifi | |
| } | |
| /** | |
| * Check if there is any connectivity to a Wifi network on a specific network. | |
| * | |
| * @param context The context. | |
| * @param network The network | |
| * @return @code{true} if we are connected to a Wifi network, @code{false} | |
| * otherwise | |
| */ | |
| fun isConnectedWifi(context: Context, network: Network?): Boolean { | |
| var isConnectedWifi = false | |
| val connectivityManager = getConnectivityManager(context) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if ((networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /* API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API>=23*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)) /*API>=28*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) /*API>=28*/ { | |
| if (networkCapabilities | |
| .hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) { | |
| isConnectedWifi = true | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", "a null " + | |
| "NetworkCapabilities object was found") | |
| } | |
| } else { | |
| Log.e("NullNetwork", "a null Network object was found") | |
| } | |
| } else { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.M) { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/) { | |
| if (networkCapabilities | |
| .hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) { | |
| isConnectedWifi = true | |
| } | |
| } | |
| } else { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/) { | |
| if (networkCapabilities | |
| .hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) { | |
| isConnectedWifi = true | |
| } | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetwordCapabilities", "a null " + | |
| "NetworkCapabilities object was found") | |
| } | |
| } else { | |
| Log.e("NullNetwork", "a null Network object was found") | |
| } | |
| } | |
| } else { | |
| val info = getActiveNetworkInfo(context, | |
| network) | |
| /* | |
| Works on emulator and devices. Note the use of @link{NetworkInfo | |
| .isAvailable} - without this, @link{NetworkInfo.isConnected} can return | |
| @code{true} when Wi-Fi is disabled (http://stackoverflow.com/a/2937915) | |
| */ | |
| isConnectedWifi = (info != null && info.isAvailable && info.isConnected | |
| && info.type == ConnectivityManager.TYPE_WIFI) | |
| } | |
| return isConnectedWifi | |
| } | |
| /** | |
| * Check if there is any connectivity to a Wifi network with airplane mode on. | |
| * | |
| * @param context The context. | |
| * @return @code{true} if we are connected to a Wifi network over airplane mode | |
| */ | |
| fun isConnectedWifiOverAirplaneMode(context: Context): Boolean { | |
| return isConnectedWifi(context) && isAirplaneModeOn(context) | |
| } | |
| /** | |
| * Check if there is any connectivity to a Wifi network on a specific network with airplane mode on. | |
| * | |
| * @param context The context. | |
| * @param network The network | |
| * @return @code{true} if we are connected to a specific Wifi network over | |
| * airplane mode. | |
| */ | |
| fun isConnectedWifiOverAirplaneMode(context: Context, network: Network?): Boolean { | |
| return isConnectedWifi(context, network) && isAirplaneModeOn(context) | |
| } | |
| /** | |
| * Checks via @link{TelephonyManager} if there is mobile data connection | |
| * @return @code{true} if the device has mobile data connection | |
| * @param context the context | |
| */ | |
| fun isConnectedMobileTelephonyManager(context: Context): Boolean { | |
| val tm = context | |
| .getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager | |
| var state = 0 | |
| if (tm != null) { | |
| state = tm.dataState | |
| } | |
| return state == TelephonyManager.DATA_CONNECTED | |
| } | |
| /** | |
| * Check if there is any connectivity to a mobile network. | |
| * | |
| * @param context The Context. | |
| * @param network The network | |
| * @return @code{true} if we are connected to a mobile network. | |
| */ | |
| fun isConnectedMobile(context: Context, network: Network?): Boolean { | |
| var isConnectedMobile = false | |
| val connectivityManager = getConnectivityManager(context) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if ((networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /* API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API>=23*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)) /*API>=28*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) /*API>=28*/ { | |
| if (networkCapabilities | |
| .hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) { | |
| isConnectedMobile = true | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", "A null " + | |
| "NetworkCapabilities object was found") | |
| } | |
| } else { | |
| Log.e("NullNetwork", "A null Network object was found") | |
| } | |
| } else { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.M) { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/) { | |
| if (networkCapabilities | |
| .hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) { | |
| isConnectedMobile = true | |
| } | |
| } | |
| } else { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/) { | |
| if (networkCapabilities | |
| .hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) { | |
| isConnectedMobile = true | |
| } | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", "a null " + | |
| "NetworkCapabilities object was found") | |
| } | |
| } else { | |
| Log.e("NullNetwork", "a null Network object was found") | |
| } | |
| } | |
| } else { | |
| val info = getActiveNetworkInfo(context, | |
| network) | |
| /* | |
| Works on emulator and devices. Note the use of @link{NetworkInfo | |
| .isAvailable} - without this, @link{NetworkInfo.isConnected} can return | |
| @code{true} when Wi-Fi is disabled (http://stackoverflow.com/a/2937915) | |
| */isConnectedMobile = (info != null && info.isAvailable && info.isConnected | |
| && info.type == ConnectivityManager.TYPE_MOBILE) | |
| } | |
| return isConnectedMobile | |
| } | |
| /** | |
| * Check if there is any connectivity to a mobile network. | |
| * | |
| * @param context the context. | |
| * @return @code{true} if we are connected to a mobile network. | |
| */ | |
| fun isConnectedMobile(context: Context?): Boolean { | |
| var isConnectedWifi = false | |
| val connectivityManager = getConnectivityManager(context) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { | |
| val networks = connectivityManager.allNetworks | |
| for (network in networks) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if ((networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /* API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)) /*API >= 28*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) /*API >= 28*/ { | |
| if (networkCapabilities.hasTransport( | |
| NetworkCapabilities.TRANSPORT_CELLULAR)) { | |
| isConnectedWifi = true | |
| break | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", "a null " + | |
| "NetworkCapabilities object was found") | |
| } | |
| } else { | |
| Log.e("NullNetwork", "a null Network object was found") | |
| } | |
| } else { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.M) { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/) { | |
| if (networkCapabilities.hasTransport( | |
| NetworkCapabilities.TRANSPORT_CELLULAR)) { | |
| isConnectedWifi = true | |
| break | |
| } | |
| } | |
| } else { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/) { | |
| if (networkCapabilities.hasTransport( | |
| NetworkCapabilities.TRANSPORT_CELLULAR)) { | |
| isConnectedWifi = true | |
| break | |
| } | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", "a null " + | |
| "NetworkCapabilities object was found") | |
| } | |
| } else { | |
| Log.e("NullNetwork", "a null Network object was found") | |
| } | |
| } | |
| } | |
| } else { | |
| val infos = getAllNetworkInfo(context) | |
| for (info in infos) { /* | |
| Works on emulator and devices. Note the use of @link{NetworkInfo | |
| .isAvailable} - without this, @link{NetworkInfo.isConnected} can | |
| return @code{true} when Wi-Fi is disabled (http://stackoverflow | |
| .com/a/2937915) | |
| */ | |
| isConnectedWifi = (info != null && info.isAvailable && info.isConnected | |
| && info.type == ConnectivityManager.TYPE_MOBILE) | |
| if (isConnectedWifi) { | |
| break | |
| } | |
| } | |
| } | |
| return isConnectedWifi | |
| } | |
| /** | |
| * Check if there is any connectivity to a ethernet network. | |
| * | |
| * @param context the context. | |
| * @return @code{true} if we are connected to a ethernet network. | |
| */ | |
| fun isConnectedEthernet(context: Context?): Boolean { | |
| var isConnectedEthernet = false | |
| val connectivityManager = getConnectivityManager(context) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { | |
| val networks = connectivityManager.allNetworks | |
| for (network in networks) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if ((networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /* API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)) /*API >= 28*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) /*API >= 28*/ { | |
| if (networkCapabilities.hasTransport( | |
| NetworkCapabilities.TRANSPORT_ETHERNET)) { | |
| isConnectedEthernet = true | |
| break | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", "a null " + | |
| "NetworkCapabilities object was found") | |
| } | |
| } else { | |
| Log.e("NullNetwork", "a null Network object was found") | |
| } | |
| } else { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.M) { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/) { | |
| if (networkCapabilities.hasTransport( | |
| NetworkCapabilities.TRANSPORT_ETHERNET)) { | |
| isConnectedEthernet = true | |
| break | |
| } | |
| } | |
| } else { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/) { | |
| if (networkCapabilities.hasTransport( | |
| NetworkCapabilities.TRANSPORT_ETHERNET)) { | |
| isConnectedEthernet = true | |
| break | |
| } | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", "a null " + | |
| "NetworkCapabilities object was found") | |
| } | |
| } else { | |
| Log.e("NullNetwork", "a null Network object was found") | |
| } | |
| } | |
| } | |
| } else { | |
| val infos = getAllNetworkInfo(context) | |
| for (info in infos) { /* | |
| Works on emulator and devices. Note the use of @link{NetworkInfo | |
| .isAvailable} - without this, @link{NetworkInfo.isConnected} can | |
| return @code{true} when Wi-Fi is disabled (http://stackoverflow | |
| .com/a/2937915) | |
| */ | |
| isConnectedEthernet = (info != null && info.isAvailable && info.isConnected | |
| && info.type == ConnectivityManager.TYPE_ETHERNET) | |
| if (isConnectedEthernet) { | |
| break | |
| } | |
| } | |
| } | |
| return isConnectedEthernet | |
| } | |
| /** | |
| * Check if a specific network has ethernet connectivity. | |
| * | |
| * @param context The context. | |
| * @param network The network | |
| * @return @code{true} if we are connected to a ethernet network. | |
| */ | |
| fun isConnectedEthernet(context: Context, network: Network?): Boolean { | |
| var isConnectedEthernet = false | |
| val connectivityManager = getConnectivityManager(context) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.P) { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if ((networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /* API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)) /*API >= 28*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_FOREGROUND)) /*API >= 28*/ { | |
| if (networkCapabilities | |
| .hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET)) { | |
| isConnectedEthernet = true | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", "a null " + | |
| "NetworkCapabilities object was found") | |
| } | |
| } else { | |
| Log.e("NullNetwork", "a null Network object was found") | |
| } | |
| } else { | |
| if (network != null) { | |
| if (networkCapabilities != null) { | |
| if (Build.VERSION.SDK_INT >= VERSION_CODES.M) { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/ | |
| && networkCapabilities.hasCapability( | |
| NetworkCapabilities.NET_CAPABILITY_VALIDATED) /*API >= 23*/) { | |
| if (networkCapabilities | |
| .hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET)) { | |
| isConnectedEthernet = true | |
| } | |
| } | |
| } else { | |
| if (networkCapabilities | |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) /*API >= 21*/) { | |
| if (networkCapabilities | |
| .hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET)) { | |
| isConnectedEthernet = true | |
| } | |
| } | |
| } | |
| } else { | |
| Log.e("NullNetworkCapabilities", "a null " + | |
| "NetworkCapabilities object was found") | |
| } | |
| } else { | |
| Log.e("NullNetwork", "a null Network object was found") | |
| } | |
| } | |
| } else { | |
| val info = getActiveNetworkInfo(context, | |
| network) | |
| /* | |
| Works on emulator and devices. Note the use of @link{NetworkInfo | |
| .isAvailable} - without this, @link{NetworkInfo.isConnected} can return | |
| @code{true} when Wi-Fi is disabled (http://stackoverflow.com/a/2937915) | |
| */isConnectedEthernet = (info != null && info.isAvailable && info.isConnected | |
| && info.type == ConnectivityManager.TYPE_ETHERNET) | |
| } | |
| return isConnectedEthernet | |
| } | |
| /** | |
| * Check if there is fast connectivity. | |
| * | |
| * @param context the Context. | |
| * @return @code{true} if we have "fast" connectivity. | |
| */ | |
| fun isConnectedFast(context: Context): Boolean { | |
| var isConnectedFast = false | |
| if (Build.VERSION.SDK_INT < VERSION_CODES.LOLLIPOP) { | |
| val networkInfos = getAllNetworkInfo(context) | |
| for (networkInfo in networkInfos) { | |
| isConnectedFast = (networkInfo != null && networkInfo.isAvailable | |
| && networkInfo.isConnected | |
| && isConnectionFast(networkInfo.type, networkInfo.subtype)) | |
| if (isConnectedFast) { | |
| break | |
| } | |
| } | |
| } else { | |
| val connectivityManager = getConnectivityManager(context) | |
| val allNetworks = connectivityManager.allNetworks | |
| for (network in allNetworks) { | |
| if (network != null && isConnected(context, network)) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (networkCapabilities != null) { | |
| val linkDownstreamBandwidthKbps = networkCapabilities | |
| .linkDownstreamBandwidthKbps | |
| val linkUpstreamBandwidthKbps = networkCapabilities | |
| .linkUpstreamBandwidthKbps | |
| if (linkDownstreamBandwidthKbps >= minimumSpeedForFastConnection | |
| && linkUpstreamBandwidthKbps >= minimumSpeedForFastConnection) { | |
| isConnectedFast = true | |
| break | |
| } | |
| } | |
| } | |
| } | |
| } | |
| return isConnectedFast | |
| } | |
| /** | |
| * Check if there is fast connectivity over a specific network. | |
| * | |
| * @param context The Context. | |
| * @param network The network | |
| * @return @code{true} if we have "fast" connectivity. | |
| */ | |
| fun isConnectedFast(context: Context, network: Network?): Boolean { | |
| var isConnectedFast = false | |
| if (Build.VERSION.SDK_INT < VERSION_CODES.LOLLIPOP) { | |
| val networkInfo = getActiveNetworkInfo(context, network) | |
| isConnectedFast = (networkInfo != null && networkInfo.isAvailable | |
| && networkInfo.isConnected | |
| && isConnectionFast(networkInfo.type, networkInfo.subtype)) | |
| } else { | |
| val connectivityManager = getConnectivityManager(context) | |
| if (network != null && isConnected(context, network)) { | |
| val networkCapabilities = connectivityManager | |
| .getNetworkCapabilities(network) | |
| if (networkCapabilities != null) { | |
| val linkDownstreamBandwidthKbps = networkCapabilities | |
| .linkDownstreamBandwidthKbps | |
| val linkUpstreamBandwidthKbps = networkCapabilities | |
| .linkUpstreamBandwidthKbps | |
| if (linkDownstreamBandwidthKbps >= minimumSpeedForFastConnection | |
| && linkUpstreamBandwidthKbps >= minimumSpeedForFastConnection) { | |
| isConnectedFast = true | |
| } | |
| } | |
| } | |
| } | |
| return isConnectedFast | |
| } | |
| /** | |
| * Determines if the airplane mode is on | |
| * @param context The context | |
| * @return @code{true} if the airplane mode is on | |
| */ | |
| // | |
| @TargetApi(VERSION_CODES.JELLY_BEAN_MR1) | |
| fun isAirplaneModeOn(context: Context): Boolean { | |
| val isAirplaneModeOn: Boolean = if (Build.VERSION.SDK_INT < VERSION_CODES.JELLY_BEAN_MR1) { | |
| Settings.System.getInt(context.contentResolver, | |
| Settings.System.AIRPLANE_MODE_ON, 0) != 0 | |
| } else { | |
| Settings.Global.getInt(context.contentResolver, | |
| Settings.Global.AIRPLANE_MODE_ON, 0) != 0 | |
| } | |
| return isAirplaneModeOn | |
| } | |
| /** | |
| * Check if the connection is fast | |
| * @param type The network type | |
| * @param subType The network subtype | |
| * @return @code {true} if the connection is fast | |
| */ | |
| private fun isConnectionFast(type: Int, subType: Int): Boolean { | |
| val connectedFast: Boolean | |
| connectedFast = if (type == ConnectivityManager.TYPE_WIFI | |
| || type == ConnectivityManager.TYPE_ETHERNET) { | |
| true | |
| } else if (type == ConnectivityManager.TYPE_MOBILE) { | |
| when (subType) { | |
| TelephonyManager.NETWORK_TYPE_EVDO_0, TelephonyManager.NETWORK_TYPE_EVDO_A, TelephonyManager.NETWORK_TYPE_HSDPA, TelephonyManager.NETWORK_TYPE_HSPA, TelephonyManager.NETWORK_TYPE_HSUPA, TelephonyManager.NETWORK_TYPE_UMTS, TelephonyManager.NETWORK_TYPE_EHRPD, TelephonyManager.NETWORK_TYPE_EVDO_B, TelephonyManager.NETWORK_TYPE_HSPAP, TelephonyManager.NETWORK_TYPE_LTE -> true | |
| TelephonyManager.NETWORK_TYPE_1xRTT, TelephonyManager.NETWORK_TYPE_CDMA, TelephonyManager.NETWORK_TYPE_EDGE, TelephonyManager.NETWORK_TYPE_GPRS, TelephonyManager.NETWORK_TYPE_IDEN, TelephonyManager.NETWORK_TYPE_UNKNOWN -> false | |
| else -> false | |
| } | |
| } else { | |
| false | |
| } | |
| return connectedFast | |
| } | |
| //-------------------------------------- Internet Reachability Verification ---------------------------------------------------- | |
| /** | |
| * A list of hosts to verify Internet access | |
| */ | |
| private var hosts: ArrayList<String> = object : ArrayList<String>() { | |
| init { | |
| add("google.com") | |
| add("facebook.com") | |
| add("apple.com") | |
| add("amazon.com") | |
| add("twitter.com") | |
| add("linkedin.com") | |
| add("microsoft.com") | |
| } | |
| } | |
| /** | |
| * Tells whether Internet is reachable | |
| * @return @code{true} if Internet is reachable, false otherwise | |
| * @param context The context | |
| */ | |
| fun isInternetReachable(context: Context?): Boolean { | |
| val isInternetReachable: Boolean | |
| try { | |
| val internetConnectionCheckAsync : InternetConnectionCheck = InternetConnectionCheck(context) | |
| isInternetReachable = internetConnectionCheckAsync.execute() | |
| .get() | |
| return isInternetReachable | |
| } catch (e: CancellationException) { | |
| e.printStackTrace() | |
| } catch (e: Exception) { | |
| e.printStackTrace() | |
| } | |
| return false | |
| } | |
| /** | |
| * Tells whether Internet is reachable | |
| * @return @code{true} if Internet is reachable, false otherwise | |
| * @param context The context | |
| * @param hosts The hosts | |
| */ | |
| fun isInternetReachable(context: Context?, hosts: ArrayList<String>): Boolean { | |
| val isInternetReachable: Boolean | |
| try { | |
| val internetConnectionCheckAsync = InternetConnectionCheck( | |
| context) | |
| val connectivityAndInternetAccessCheck = ConnectivityAndInternetAccess(hosts) | |
| connectivityAndInternetAccessCheck.hosts = hosts | |
| isInternetReachable = internetConnectionCheckAsync.execute().get() | |
| return isInternetReachable | |
| } catch (e: CancellationException) { | |
| e.printStackTrace() | |
| } catch (e: Exception) { | |
| e.printStackTrace() | |
| } | |
| return false | |
| } | |
| /** | |
| * Tells whether there is Internet connection | |
| * @param context The context | |
| * @return @code {true} if there is Internet connection | |
| */ | |
| private fun isConnectedToInternet(context: Context?): Boolean { | |
| var isAvailable = false | |
| if (isConnected(context)) { | |
| try { | |
| for (h in hosts) { | |
| if (isHostAvailable(h, context)) { | |
| isAvailable = true | |
| break | |
| } | |
| } | |
| } catch (e: IOException) { | |
| e.printStackTrace() | |
| } | |
| } | |
| return isAvailable | |
| } | |
| /** | |
| * Tells whether there is Internet connection | |
| * @param context The context | |
| * @param hosts The hosts | |
| * @return @code {true} if there is Internet connection | |
| */ | |
| private fun isConnectedToInternet(context: Context, hosts: ArrayList<String>): Boolean { | |
| var isAvailable = false | |
| if (isConnected(context)) { | |
| try { | |
| for (h in hosts) { | |
| if (isHostAvailable(h, context)) { | |
| isAvailable = true | |
| break | |
| } | |
| } | |
| } catch (e: IOException) { | |
| e.printStackTrace() | |
| } | |
| } | |
| return isAvailable | |
| } | |
| /** | |
| * Checks if the host is available | |
| * @param hostName The name of the host | |
| * @param context The context | |
| * @return @code{true} if the host is available | |
| * @throws IOException In case an error happens during the connection | |
| */ | |
| @Throws(IOException::class, IllegalBlockingModeException::class, IllegalArgumentException::class) | |
| private fun isHostAvailable(hostName: String, context: Context?): Boolean { | |
| var isHostAvailable: Boolean | |
| isHostAvailable = false | |
| var isStillConnected: Boolean = isConnected(context); //Device may have lost network connectivity | |
| if(isStillConnected) { | |
| try { | |
| Socket().use { socket -> | |
| val port = 80 | |
| val socketAddress = InetSocketAddress(hostName, port) | |
| socket.connect(socketAddress, 3000) | |
| isHostAvailable = true | |
| } | |
| } catch (unknownHost: UnknownHostException) { | |
| isHostAvailable = false | |
| } | |
| } | |
| return isHostAvailable | |
| } | |
| } | |
| } |
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