database - Android setReadAccess for Parse ADMIN error -


i use parse database. have access simple users , admin user. each user see his/her own data admin user see of users' data.

i create parseuser, , if current user equal it, should known admin user. following error:
java.lang.illegalargumentexception: cannot setreadaccess user null id

i think mistakes if function (never become true) , this: acl.setreadaccess(admin,true);

could suggest something?

parseuser admin = new parseuser(); admin.setusername("admin3"); admin.setpassword("a");  // create post.    anywallpost post = new anywallpost();     // set location current user's location    post.setlocation(geopoint);    post.settext(text);    post.setuser(parseuser.getcurrentuser());     parseacl acl = new parseacl();      // give read accesses   if (parseuser.getcurrentuser() == admin) {       acl.setreadaccess(parseuser.getcurrentuser(), true);   }   else   {       acl.setreadaccess(parseuser.getcurrentuser(),true);       acl.setreadaccess(admin,true);   }    post.setacl(acl);       // save post    post.saveinbackground(new savecallback() {        @override        public void done(parseexception e) {            dialog.dismiss();            finish();        }    });


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