ConnectivityManager.CONNECTIVITY_ACTION deprecated

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What will be deprecated is the ability for a backgrounded application to receive network connection state changes.

As David Wasser said you can still get notified of connectivity changes if the app component is instantiated (not destroyed) and you have registered your receiver programmatically with its context, instead of doing it in the manifest.

Or you can use NetworkCallback instead. In particular, you will need to override onAvailable for connected state changes.

Let me draft a snippet quickly:

public class ConnectionStateMonitor extends NetworkCallback {

   final NetworkRequest networkRequest;

   public ConnectionStateMonitor() {
       networkRequest = new NetworkRequest.Builder()
           .addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR)
           .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
           .build();
   }

   public void enable(Context context) {
       ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
       connectivityManager.registerNetworkCallback(networkRequest, this);
   }

   // Likewise, you can have a disable method that simply calls ConnectivityManager.unregisterNetworkCallback(NetworkCallback) too.

   @Override
   public void onAvailable(Network network) {
       // Do what you need to do here
   }
}

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