android - Strange: Intent not working after Shared Preferences Code -


i have strange problem. intent not working after shared preferences code. if write same intent before shared preferences code, working. below code...

check fetchdata() method...

login_activity

    public class login_activity extends appcompatactivity implements view.onclicklistener {      // widgets     private spinner spnr_login_type;     private edittext edt_login_id, edt_pwd;     private button btn_login, btn_regi;     private progressdialog progressdialog;      // variables     private string url = "login.php";      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_login);          // checking user login or not         if (preferences.getpreferences(getapplicationcontext()).contains(preferences.key_user_name)) {             intent myintent = new intent(login_activity.this, home_activity.class);             startactivity(myintent);             finish();         }         find_view_by_id();         registerclicklisteners();         progressdialog = new progressdialog(this);         progressdialog.setindeterminate(true);     }      private void find_view_by_id() {         spnr_login_type = (spinner) findviewbyid(r.id.spnr_login_type);         edt_login_id = (edittext) findviewbyid(r.id.edt_login_id);         edt_pwd = (edittext) findviewbyid(r.id.edt_pwd);         btn_login = (button) findviewbyid(r.id.btn_login);         btn_regi = (button) findviewbyid(r.id.btn_regi);     }      private void registerclicklisteners() {         btn_login.setonclicklistener(this);         btn_regi.setonclicklistener(this);     }      @override     public void onclick(view view) {         switch (view.getid()) {             case r.id.btn_login:                 if (commom_methods.isnetworkavailable(getapplicationcontext())) {                     fetchdata();                 } else {                     toast.maketext(login_activity.this, "please, coonect internet!!", toast.length_short).show();                 }                 break;             case r.id.btn_regi:                 intent myintent = new intent(login_activity.this, regi_activity.class);                 startactivity(myintent);                 break;         }     }      private void fetchdata() {         stringrequest stringreq = new stringrequest(request.method.post, constants.base_url + url, new response.listener<string>() {             @override             public void onresponse(string response) {                 log.e("resqq:", response);                 progressdialog.dismiss();                 if (response != null) {                     try {                         jsonobject jo = new jsonobject(response);                         if (jo.has("success")) {                             jsonobject joobj = jo.getjsonobject("user");                              // storing shared preferences                             preferences.writestring(getapplicationcontext(),                                     preferences.key_sl_id, joobj.getstring("sl_id"));                             preferences.writestring(getapplicationcontext(),                                     preferences.key_tution_center_sl, joobj.getstring("tution_center_sl"));                             preferences.writestring(getapplicationcontext(),                                     preferences.key_batch_sl, joobj.getstring("batch_sl"));                             preferences.writestring(getapplicationcontext(),                                     preferences.key_batch_grup_sl, joobj.getstring("batch_grup_sl"));                             preferences.writestring(getapplicationcontext(),                                     preferences.key_co_sl, joobj.getstring("co_sl"));                             preferences.writestring(getapplicationcontext(),                                     preferences.key_drange_sl, joobj.getstring("drange_sl"));                              preferences.writestring(getapplicationcontext(),                                     preferences.key_reg_no, joobj.getstring("reg_no"));                             preferences.writestring(getapplicationcontext(),                                     preferences.key_user_name, joobj.getstring("name"));                             preferences.writestring(getapplicationcontext(),                                     preferences.key_user_email, joobj.getstring("email"));                             preferences.writestring(getapplicationcontext(),                                     preferences.key_user_mob, joobj.getstring("mobile_no"));                              intent myintent = new intent(login_activity.this, home_activity.class);                             startactivity(myintent);                             finish();                          } else {                             toast.maketext(getapplicationcontext(), jo.getstring("error_msg"), toast.length_long).show();                         }                     } catch (jsonexception e) {                         e.printstacktrace();                     }                 } else {                     toast.maketext(login_activity.this, "server error! server sent empty data!! try again later.", toast.length_long).show();                 }             }         }, new response.errorlistener() {             @override             public void onerrorresponse(volleyerror error) {                 progressdialog.dismiss();                 toast.maketext(getapplicationcontext(), "error:" + error.getmessage(), toast.length_long).show();             }         }) {             @override             protected map<string, string> getparams() {                 map<string, string> params = new hashmap<string, string>();                 params.put("type", spnr_login_type.getselecteditem().tostring().tolowercase());                 params.put("reg_no", edt_login_id.gettext().tostring());                 params.put("password", edt_pwd.gettext().tostring());                 return params;             }         };         requestqueue queue = volley.newrequestqueue(this);         queue.add(stringreq);          progressdialog = new progressdialog(this);         progressdialog.setmessage("fetching details!");         progressdialog.show();         //progressdialog.show(new contextthemewrapper(this, r.style.dialogcustom), "fetching details!", "");     } }

below response...

    {   "success": true,   "user": {     "sl_id": "1",     "reg_no": "21711101",     "name": "akash bharadwaj n",     "photo": "",     "email": "",     "type": "student"   },   "api_key": "apikey here" } 

if (preferences.getpreferences(getapplicationcontext()).contains(preferences.key_user_name))

must returning false check boolean value


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