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

It can be saved as long like how I wrote it down:

Double to Long:

Double.doubleToRawLongBits(double);

Long to Double:

Double.longBitsToDouble(defaultLongValue);

EDIT:

SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
Long newweightTemp =  sharedPreferences.getLong("storednewweight", 0L);
Double newWeight = Double.longBitsToDouble(newweightTemp );
newweight = newweight + 5;
//saves value into sharedpreference
sharedPreferences.edit().putLong("storednewweight", Double.doubleToRawLongBits(newWeight)).apply();

Something like that should do it.