NetworkStateReceiver.java

/*
   Network State Receiver
 
   Copyright 2013 Thincast Technologies GmbH, Author: Martin Fleisz
 
   This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
   If a copy of the MPL was not distributed with this file, You can obtain one at
   http://mozilla.org/MPL/2.0/.
*/
 
package com.freerdp.freerdpcore.application;
 
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.Network;
import android.net.NetworkCapabilities;
import android.net.NetworkRequest;
import android.os.Build;
import android.util.Log;
 
import androidx.annotation.NonNull;
 
public class NetworkStateReceiver
{
  private static final String TAG = "NetworkStateReceiver";
 
  public static boolean isMeteredNetwork(Context context)
  {
    ConnectivityManager cm =
        (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
    return cm != null && cm.isActiveNetworkMetered();
  }
 
  public static void registerNetworkCallback(Context context)
  {
    ConnectivityManager cm =
        (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
    if (cm == null)
      return;
 
    ConnectivityManager.NetworkCallback callback = new ConnectivityManager.NetworkCallback() {
      private void update(String event)
      {
        GlobalApp.IsMeteredNetwork = isMeteredNetwork(context);
        Log.d(TAG, event + " - IsMeteredNetwork=" + GlobalApp.IsMeteredNetwork);
      }
 
      @Override
      public void onCapabilitiesChanged(@NonNull Network n, @NonNull NetworkCapabilities c)
      {
        update("Capabilities Changed");
      }
      @Override public void onAvailable(@NonNull Network n)
      {
        update("Available");
      }
      @Override public void onLost(@NonNull Network n)
      {
        update("Lost");
      }
    };
 
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
      cm.registerDefaultNetworkCallback(callback);
    else
      cm.registerNetworkCallback(new NetworkRequest.Builder().build(), callback);
  }
}