Store JSON object temporarily and POST to Volley when Internet is available

Question

I am using Volley in application. I am sending data using REST Api to server. This is the JSON POST request to Server.

private void add() {
        String NetworkStatus = biz.fyra.bookapp.utils.NetworkStatus.checkConnection(getContext());
        if (NetworkStatus.equals("false")) {
            alert.noInternetAlert(getActivity());
        } else {
            JSONObject info = new JSONObject();
            try {
                info.put("name", full_name);
                info.put("phone", foodie_contact);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, ApiUrls.ADD, info, new Response.Listener<JSONObject>() {
                @Override
                public void onResponse(JSONObject response) {
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                }
            }) {
            };
            AppController.getInstance().addToRequestQueue(request);
        }
    }

If Internet is available I am able to POST data to server. But If Internet is not available I need to temporarily store this JSON object somewhere and when Internet is available I need to POST all JSON objects to server that were stored locally. How to achieve this ?

Please see: [Source](https://stackoverflow.com/a/26360936/9763253) and this: [JobScheduler Example Video](https://youtu.be/3EQWmME-hNA) — Ümañg ßürmån, Oct 25 '18 at 06:03
you can store json object in singleton class. It will store value only till app is running. — Ashish Kudale, Oct 25 '18 at 06:04
Hi @Satyam , on error listener store the input json in database and write listener for internet connectivity , if user comes to online from offline then push all the data to server — Shanmugam, Oct 25 '18 at 06:06
Save data in shared preferences, if you are getting some response against your posting i.e if you get success from there, then after getting success remove from shared preference. If is that your case. — Syed Hamza Hassan, Oct 25 '18 at 06:07

Adnan khalil · Accepted Answer · 2018-10-25T06:32:34.223

For Achieving this you have to follow these steps.

Check if the internet is connected.
If the internet is connected send the call.
If the internet is not connected you you can convert the Json to string and save it in Shared preferences or DataBase.
Then you have to create a broadcast reciver for checking the internet connections and
when ever you get the message for active internet you need to send the pending data to server.

UPDATE For creating a broadcast reciever

public class NetworkChangeReceiver extends BroadcastReceiver {

@Override
public void onReceive(final Context context, final 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()) {
        Log.d("Network Available ", "Flag No 1");
    }
}

}

And then in your Application tag within Menifest file Add Intent Filter

<receiver android:name=".NetworkChangeReceiver" >
    <intent-filter>
        <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
    </intent-filter>
</receiver>

Let me know if you need assistance in following these steps. — Adnan khalil, Oct 25 '18 at 06:17
Can you please Assist me for checking when Internet is available using Broadcast Receiver ? — Satyam Gondhale, Oct 25 '18 at 06:19
Please check my updated answer. You will receive the broadcast is onreceive method and then you can perform the desired operation. — Adnan khalil, Oct 25 '18 at 06:36

Store JSON object temporarily and POST to Volley when Internet is available

1 Answers1