android - java.lang.InstantiationException: class has no zero argument constructor

Question

I am trying to use a BroadcastReceiver as an inner class to track the network state but I got the exception in the title. What should I do to fix this problem?

public class NetworkChangeReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        final ConnectivityManager connMgr = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);

        final android.net.NetworkInfo wifi = connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        final android.net.NetworkInfo mobile = connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

        if (wifi.isAvailable() || mobile.isAvailable()) {
            setupData();
            Log.d("Netowk Available ", "Flag No 1");
        }
    }
}

question from:https://stackoverflow.com/questions/29947038/java-lang-instantiationexception-class-has-no-zero-argument-constructor

Answer 1

Your

inner Broadcast receiver must be static ( to be registered through Manifest)

OR

Non-static broadcast receiver must be registered and unregistered inside the Parent class

for this.

I was using an Inner broadcast reciver, without registering it within the class. Either make it static and register in Manifest , or Make it non static and register and unregister inside the parent class .