Writing to file and reading from file when no internet

Question

How to write the data from Web API to a file and how to read data from that file if no internet?

public static boolean isConnectingToInternet(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) {
                        return true;
                    }

        }
        return false;
    }

You need at least once your app run over internet, And than save your file in NSUserDefault, So that you can access it as offline mode. — iDeveloper
– iDeveloper, Commented Feb 6, 2017 at 9:14
I suggest you do not write it to the NSUserDefault but just to a file in the document directory. The NSUserDefault is not ment to hold large chucks of data but just small settings. — rckoenes
– rckoenes, Commented Feb 6, 2017 at 9:37

Md Istiak Morsalin · Accepted Answer · 2017-02-06 11:05:56Z

0

You can not request a web service in offline mode. What is the best you can do is, you can apply client cash(setting max-age, s-maxage , max-stale in request header) or simply save the data from your web api in a local database like sqlite or Realm.

answered Feb 6, 2017 at 11:05

Md Istiak Morsalin

11.2k10 gold badges37 silver badges64 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Writing to file and reading from file when no internet

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related