Question

I’m trying to store and retrieve numbers in android so later I can do calculations on the results. I am managing to store and get strings but for some reason can’t seem to get it to work for integers

here is the string code I tested

save…

getSharedPreferences("words", 0).edit().putString("YAS", wordString).commit();

receive…

String words= getSharedPreferences("words", 0).getString("YAS", "");
t.setText(words);

but when I try a similar thing with integers it doesn’t work.

save…

getSharedPreferences("number", 0).edit().putInt("numbers", 1).commit();

receive…

int test2 = getSharedPreferences("number", 0).getInt("numbers",0);

Basically I need the saved variable to be 0 before the button is pressed (which I’m guessing it will be since it doesn’t exist at that point) and then change to 1 when pressed. No matter how many times the button is pressed it will only ever equal 1
cheers for any help

Answer 1

From you comment I assume that you are doing something like this:

int test2 = getSharedPreferences("number", 0).getInt("numbers",0);
t.setText(test2);

This will make the system look for a ressource in your xml ressource files with ressource id with the value test2 (0 in your case). This ressource will not exist and you get an exception.

Use

int test2 = getSharedPreferences("number", 0).getInt("numbers",0);
t.setText(Integer.toString(test2));

instead.