Question

Hi i have a string looking something like this 10 -1 30 -2 and i want to read the numbers between spaces. I can do this using a FOR statement and the code

Character.toString(myString.charAt(i));

and

Integer.parseInt(myString);

But i face a problem when i try to read negative number like -1 and i got the error message:

09-09 13:06:49.630: ERROR/AndroidRuntime(3365): Caused by: java.lang.NumberFormatException: unable to parse '-' as integer

Any ideas how to solve this ??

Answer 1

You’re trying to parse a single character ('-') (after converting it to a string, admittedly) instead of the string “-1”. If you use charAt you’ll be parsing a single digit at a time, so “10” will come out as 1 and then 0, not 10.

If you just split your string on spaces, you should be able to parse the strings with no problems.