android - Why do I receive the "ParseObject has no data for this key" error when pinning to localDatastore? -

using following query want list of parseusers containing subset of columns, defined querycolumns list. receive results, when try pin them local datastore receive exception:

com.parse.parseexception: java.lang.illegalstateexception: parseobject has no data key. call fetchifneeded() data. 

i can't understand why... should message appear when "complex" columns parseobjects involved? data i'm querying is, instead, composed strings , booleans only.

final list<string> querycolumns = arrays.aslist(     "username",         // string     "email",            // string     "avatarcountry",    // string     "avatarid",         // string     "showcountry"       // boolean     "facebookid"        // string );  parsequery<parseuser> query = parseuser.getquery(); query.selectkeys(querycolumns); query.wherecontainedin("facebookid", fids);  query.findinbackground(new findcallback<parseuser>() {      @override     public void done(list<parseuser> result, parseexception ex) {          if (ex == null) {             // stuff... pin results             parseuser.pinallinbackground(cached_players_label, result, new savecallback() {                 @override                 public void done(parseexception pinex) {                     // exception here: java.lang.illegalstateexception: parseobject has no data key.  call fetchifneeded() data.                 }             });         }     } }); 

your exception's containing answer: call fetchifneeded() data. change code following:

query.findinbackground(new findcallback<parseuser>() {         @override         public void done(list<parseuser> result, parseexception e) {             parseobject.fetchallifneededinbackground(result, new findcallback<parseuser>() {                 @override                 public void done(list<parseuser> list, parseexception ex) {                     if (ex == null) {                         parseobject.pinallinbackground(cached_players_label, result, new savecallback() {                             @override                             public void done(parseexception e) {                              }                         });                     }                 }             });         }     });