Android - SharedPreference converting to Double

Question

Basically i have a valued saved into shared preference as a string.

I am retrieving the value saved, and am trying to use it in a calculation.

How can i conv

Answer 1

You can parse the string as a double:

SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());

String weight =  sharedPreferences.getString("storednewweight", "");
Double newweight = Double.parseDouble(weight);
newweight = newweight + 5;

//saves value into sharedpreference
savePreferences("storednewweight", (Double.toString(newweight)));