Hi here i added sample code for SharedPreferences for you concern .please try this code and let me know. Hope it should helpful for you. Thanks.
SharedPreferences Creation:
SharedPreferences sharedPref = getBaseContext().getSharedPreferences("USER_PREFS",Context.MODE_PRIVATE);
Store the values to SharedPreferences:
int userId = 2425;
String authtoken = "abcdef345345";
String authkey = "qrst";
sharedPref = getBaseContext().getSharedPreferences("USER_PREFS",prefMode);
SharedPreferences.Editor editor = vSmileSharedPreferences.edit();
editor.putString("AUTH_KEY", authkey);
editor.putString("AUTH_TOKEN", authtoken);
editor.putString("USER_ID", String.valueOf(userId));
editor.commit();
Retriving SharedPreferences values from another Activity:
String authtoken ="";
String authkey = "";
int UserId = 0;
SharedPreferences sharedPref = getBaseContext().getSharedPreferences("USER_PREFS",Context.MODE_PRIVATE);
authtoken = sharedPref.getString("AUTH_TOKEN", null);
authkey = sharedPref.getString("AUTH_KEY", null);
UserId = sharedPref.getString("USER_ID", 0);
If the SharedPreference UserID is null or empty means it will take default as 0;