this is my json data
[{\"FeedbackId\":\"1\",\"Phoneid\":\"9774d56d682e549c\",\"feedbackdate\":\"2011\\/9 \\/24\",\"GuestName\":\"sdf\",\"Address\":\"sdf\",\
You should be able to decode using the org.json package. From here:
String json = "{"
+ " \"query\": \"Pizza\", "
+ " \"locations\": [ 94043, 90210 ] "
+ "}";
JSONObject object = (JSONObject) new JSONTokener(json).nextValue();
String query = object.getString("query");
JSONArray locations = object.getJSONArray("locations");
Just use your own JSON instead of theirs.