How to store an arraylist into a string and send it to a server as a request in Android?

Question

How can I send a string to a server as a request? After getting response, I should again split the string in to parts. I have stored an ArrayList into string here:

ArrayList<String> contactlist=new ArrayList<String>();
        contactlist.add("Android");
        contactlist.add("tarnaka");
        contactlist.add("uppal");
        contactlist.add("Prasad");

        String[] contact=new String[contactlist.size()];
        contact=contactlist.toArray(contact);

Answer 1

To join ArrayList into a string Use

String joined = TextUtils.join(",", contactslist.toArray()); 

See: http://developer.android.com/reference/android/text/TextUtils.html#join(java.lang.CharSequence, java.lang.Object[])

Answer 2

Make a string by inserting "-" in between of ArrayList objects. Sent that string. For getting the array of names call string.split("-")enter code here`at other end. You r done.

Answer 3

Here u are...

ArrayList<String> contactlist = new ArrayList<String>();
    contactlist.add("Android");
    contactlist.add("tarnaka");
    contactlist.add("uppal");
    contactlist.add("Prasad");

    StringBuffer sb = new StringBuffer("");

    for (String temp : contactlist) {
        sb.append("-" + temp);
    }

    String stringToSend = sb.toString();

    MyLog.printLog("String : " + stringToSend);

    String[] rString = stringToSend.split("-");

    for (String s : rString) {
            MyLog.printLog("Names : " + s);
    }