how to store and retrieve (key,value) kind of data using saved preferences android

Question

I have a hash map table as below,

HashMap backUpCurency_values = new HashMap();

and i want to

Answer 1

You can use SharedPreference like this:

SharedPreferences s_pref=PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
Editor edit=s_pref.edit();

edit.putString("key","value");
edit.commit();

later you can use it like:

String s=s_pref.getString("key","default value");

But,you must have list of keys you have saved values with,into SharedPreferences so that you can get values easily at the time of retrieving them.