Android：如何以不同的方式从json对象获取jsonarray

Question

I know how to get jsonarray from jsonobject . I am doing like below code to get jsonarray.

JSONObject recvJson = new JSONObject(holder.toString());   
String numberByte= (String) recvJson.get("data");
String ts = (String) recvJson.get("time");
JSONObject temp2 = new JSONObject("{ \"data\" : " + numberByte+ "}");
JSONArray recvJarray = temp2.getJSONArray("data"); 

for (int i = 0; i < recvJarray.length(); i++) 
{
byteArray[i] = (byte) recvJarray.getInt(i); 
}

But don't want to use for-loop , without using for-loop or any other loop want to retrieve jsonarray data values .

How should I do ?? I have done google & saw many forums but dint succeed to retrieve data without using for-loop.

for example : I ll be getting 80 - 100 packets of 1024bytes per second from server, I want to retrieve this data & store it into bytearray . By usingf for-loop its taking around 300ms- 400ms and I am loosing many packets between that. So I want to use different approach. If any Idea or solution for cracking this.

Help will be appreciated !!

Answer 1

try usig gson

it uses java reflection to convert objects to json and json to object with simple methods

toJson(),fromJson() (and it works for object arrays and lists too)

but you have to write the proper classes for the jsons (with all fields)

read the documentation.

Answer 2

You can use GSON to parse the json objects. It is much faster and easier to decode json data. Check these links. Gson1 , Gson2