android - Looping through JSONObject to Create Array Java -

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i have jsonobject of following format: 

[{"ascii_name":"rio de janeiro"},{"ascii_name":"riyadh"},{"ascii_name":"rome"},{"ascii_name":"rawalpindi"},{"ascii_name":"rabat"},{"ascii_name":"recife"},{"ascii_name":"ra's bayrut"},{"ascii_name":"rajkot"}]

which has been created using following code: 

while($row = $all_cities->fetch_array()) {  $myarray["ascii_name"] = $row["ascii_name"];  $returnarray[] = $myarray; } echo json_encode($returnarray);

now using volley task load android app. in onresponsemethod want obtain each of city names , load arraylist<string> using for loop. code now, won't work since s jsonobject not jsonarray. 

@override         public void onresponse(string s) {             try {                     jsonobject jsonobject = new jsonobject(s);                 (int = 0; < jsonobject.length(); i++) {                     jsonobject = jsonobject.getjsonobject(i);                     ....... more code isn't relevant                  }

instead of 

    jsonobject jsonobject = new jsonobject(s);

use 

    jsonarray jsonarray = new jsonarray(s);

also think using stringrequest in volley. switch jsonobjectrequest in volley.


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