Detect CONNECTIVITY CHANGE in Android 7 and above when app is killed/in background

Question

Problem:

So the problem is that I have an app which sends a request to our backend whenever WiFi is connected (with the connected SSID and other inf

Answer 1

The best way to grab Connectivity change Android Os 7 and above is register your ConnectivityReceiver broadcast in Application class like below, This helps you to get changes in background as well until your app alive.

public class MyApplication extends Application {

      private ConnectivityReceiver connectivityReceiver;

      private ConnectivityReceiver getConnectivityReceiver() {
          if (connectivityReceiver == null)
               connectivityReceiver = new ConnectivityReceiver();

          return connectivityReceiver;
       }
       @Override
       public void onCreate() {
         super.onCreate();
         registerConnectivityReceiver();
       }

     // register here your filtters 
     private void registerConnectivityReceiver(){
       try {
          // if (android.os.Build.VERSION.SDK_INT >= 26) {
          IntentFilter filter = new IntentFilter();
          filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
          //filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
          //filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
          //filter.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
          registerReceiver(getConnectivityReceiver(), filter);
       } catch (Exception e) {
         MLog.e(TAG, e.getMessage());
       }
 }

}

And then in manifest

Here is your ConnectivityReceiver.java

 public class ConnectivityReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(final Context context, final Intent intent) {
      MLog.v(TAG, "onReceive().." + intent.getAction());
      }
    }