How to setup Alertbox from BroadcastReceiver

Question

I have implemented alarm in android app. Alarm is working fine. Toast message is visible. Now I want to make Alert Box Notification to user.

Answer 1

I also looking for this solution but after searching lots of thing i did't get the exact ans for the custom dialog. So at this moment i make the custom dialog and pop up automatically when the internet connection gets down. So First of all we need to make a custom layout which we used for pop up so here is my alertforconnectioncheck.xml file

Now make the Broadcast extendable class:

public class NetworkChangeReceiver extends BroadcastReceiver {
    String LOG_TAG = "NetworkChangeReceiver";
    public boolean isConnected = false;
    private SharedPreferences.Editor edit;
    private Boolean status;
    @Override
    public void onReceive(final Context context, final Intent intent) {

        Log.v(LOG_TAG, "Receieved notification about network status");
        status = isNetworkAvailable(context);

        if (status == false) {

            final Dialog dialog = new Dialog(context);
            dialog.setContentView(R.layout.alertforconnectioncheck);
            dialog.setTitle("No Internet Connection...");
            Button dialogButton = (Button) dialog.findViewById(R.id.ok_button);
            dialogButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    dialog.dismiss();
                }
            });
            dialog.show();
        }
    }

    private boolean isNetworkAvailable(Context context) {
        ConnectivityManager connectivity = (ConnectivityManager)
                context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivity != null) {
            NetworkInfo[] info = connectivity.getAllNetworkInfo();
            if (info != null) {
                for (int i = 0; i < info.length; i++) {
                    if (info[i].getState() == NetworkInfo.State.CONNECTED) {
                        if(!isConnected){
                            Log.v(LOG_TAG, "Now you are connected to Internet!");
                            Toast.makeText(context, "Now you are connected to Internet!", Toast.LENGTH_LONG).show();
                            isConnected = true;
                        }
                        return true;
                    }
                }
            }
        }
        Log.v(LOG_TAG, "You are not connected to Internet!");
        Toast.makeText(context, "You are not connected to Internet!", Toast.LENGTH_LONG).show();
        isConnected = false;
        return false;
    }
}

Now in MainActivity Class call the Broadcast Receiver class in onCreate:

private NetworkChangeReceiver receiver;
IntentFilter filter;
filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
        receiver = new NetworkChangeReceiver();
        registerReceiver(receiver, filter);  

This is the custom dialog box which appear automatically when the internet gets down and if you have a multiple Activities in the application you must be call it in every activity in the onCreate hope it helps for some one who looking for this solution.