java - what does this code do, I need to understand -

java - what does this code do, I need to understand -

if can explain these lines of codes does/mean. grateful. thanks

jsonobject req = new jsonobject(); boolean flag = false; seek { req.put("name", p_name.gettext().tostring()); string res = httpclient.sendhttppost(constants.name, req.tostring()); if(res != null){ jsonobject json = new jsonobject(res); if(json.getboolean("status")){ flag = true; string id = json.getstring("userid"); app.getuserinfo().setuserinfo(id); } }

in brief

this code sends name remote api, returns userid , successful status (presumably if name found remote service). userid stored in our local application.

line line explanation

first, create json object named req.

jsonobject req = new jsonobject();

then save string stored in p_name name field of req

boolean flag = false; seek { req.put("name", p_name.gettext().tostring());

then http post string serialization of json object our server. res store response receive string.

string res = httpclient.sendhttppost(constants.name, req.tostring());

after post returns, check response see if it's null.

if(res != null){

if it's not null, turn response json object (presumably server returns valid json.

jsonobject json = new jsonobject(res);

we check see if field status in our response object true. (response {"status":"true","userid":"a-user-id"} if looked @ raw server output.)

if(json.getboolean("status")){

if so, set flag true, field userid response object, , set our application's user id returned id server.

flag = true; string id = json.getstring("userid"); app.getuserinfo().setuserinfo(id);

java android