Why BroadcastReceiver works even when app is in background ?

Question

I am checking Internet connectivity in my app using BroadcastReceiver and I show an alert dialog if the connection is lost. It works fine. But my problem is that BroadcastRe

Answer 1

To make a Broadcast Receiver that fires only when you app is running follow the below code.

1. Create your Broadcast Receiver like this:

---

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class InternetStatusNotifier extends BroadcastReceiver{

    @Override
    public void onReceive(Context context, Intent intent) {
        //Recieve notification here

    }

}

2. Make an activity or fragment where you want the Broadcast Receiver to work like this:

---

import android.app.Activity;
import android.content.IntentFilter;
import android.os.Bundle;

public class MainActivity extends Activity {
    private InternetStatusNotifier mInternetStatusNotifier;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        mInternetStatusNotifier = new InternetStatusNotifier();
        super.onCreate(savedInstanceState);
    }

    @Override
    protected void onResume() {
        registerReceiver(mInternetStatusNotifier, new IntentFilter(
                "android.net.conn.CONNECTIVITY_CHANGE"));
        super.onResume();
    }

    @Override
    protected void onPause() {
        unregisterReceiver(mInternetStatusNotifier);
        super.onPause();
    }

Note: That is how you use broadcasts receiver in a screen specific manner. Only the screen displaying will receive broadcasts in this way. When you register broadcast using manifest file then they are even received when app is closed