Sending ArrayList from Android to PHP script using JSON

Question

What is the Scenario

I want to send multiple ArrayList (usally 5) from android to the server and want to insert it into mysql database.

Answer 1

You cant send Arraylist to server,its an object. The best way to solve your problem is user JSON , you need to do something like that -

 ArrayList Questions=  new ArrayList();
 ArrayList A1=  new ArrayList();
 ArrayList A2=  new ArrayList();
 ArrayList A3=  new ArrayList();
 ArrayList A4=  new ArrayList();


 JsonArray jArr1= new JsonArray();
 for(String data:A1)
 {
   jArr1.add(data);
 }
  JsonArray jArr2= new JsonArray();
 for(String data:A2)
 {
   jArr2.add(data);
 }
 //convert each array list to jsonarray
  JsonArray jArraySet = new JsonArray();
  jArraySet.add(jArr1);
  jArraySet.add(jArr2);

 //add each json array to jArraySet
 // then send the data via 
   HttpClient httpclient = new DefaultHttpClient();
   ArrayList nameValuePairs = new ArrayList();                   
    // put the values of id and name in that variable
   nameValuePairs.add(new BasicNameValuePair("all_arraylist",jArraySet.toString()));
   HttpPost httppost = new HttpPost(url);
   httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
   HttpResponse response = httpclient.execute(httppost); 
   HttpEntity entity = response.getEntity();

note: dont forget to do it in asynctask

in php section ,do the following