parse.com - Android: Retrieving User profile picture from User class in Parse -

i want current user followers in list-view inducing names , profile pictures, have 2 classes in parse : user class: includes ( username , pic columns ) , following class: includes ( username , follower_name columns )

now here query :

@override protected void doinbackground(void... params) { // create array users = new arraylist<userinfo>(); try {       parseuser currentuser = parseuser.getcurrentuser();       parsequery<parseobject> innerquery = new parsequery<parseobject>("following");       innerquery.whereequalto("username", currentuser);       parsequery<parseuser> query = parseuser.getquery();       query.wherematchesquery("username", innerquery);       // ascending       query.orderbyascending("createdat");       ob = query.find();       (parseobject user : ob) {       // locate images in pic column       parsefile image = (parsefile) user.get("pic");        userinfo map = new userinfo();       map.setusername((string) user.get("follower_name"));       map.setpic(image.geturl());       users.add(map);      }     } catch (parseexception e) {     log.e("error", e.getmessage());     e.printstacktrace();     }     return null;  } 

i'm new parser , trying learn queries

update :

i change query this:

        @override         protected void doinbackground(void... params) {         users = new arraylist<userinfo>();         //parsequery<parseuser> query = parseuser.getquery();           try {             parsequery<parseobject> query = new parsequery<parseobject>("following");             query.whereequalto("username", "suma");             parsequery<parseuser> = parseuser.getquery();             a.wherematcheskeyinquery("username", "follower_username", query);             a.orderbyascending("createdat");             ob = a.find();             (parseobject user : ob) {                 parsefile image = (parsefile) user.get("pic");                 userinfo map = new userinfo();                 map.setusername((string) user.get("username"));                 map.setpic(image.geturl());                 users.add(map);             }         } catch (parseexception e2) {             // todo auto-generated catch block             e2.printstacktrace();         }         return null;     } 

only if user have 1 follower, work fine otherwise (many followers) app crashes

please ?

try like

@override protected void doinbackground(void... params) { // create array users = new arraylist<userinfo>(); try {       parsequery<parseobject> innerquery = new parsequery<parseobject>("following");       innerquery.whereequalto("username", parseuser.getcurrentuser().get("username"));       parsequery<parseuser> query = parseuser.getquery();       query.wherematchesquery("username", innerquery);       // ascending       query.orderbyascending("createdat");       ob = query.find();       (parseobject user : ob) {       // locate images in pic column       parsefile image = (parsefile) user.get("pic");        userinfo map = new userinfo();       map.setusername((string) user.get("follower_name"));       map.setpic(image.geturl());       users.add(map);      }     } catch (parseexception e) {     log.e("error", e.getmessage());     e.printstacktrace();     }     return null;  } 

this should more in tune need, don't think work (although can't sure not knowing data model). in current model, have pointer user column in following class. need compare object itself; not username.