Extract integer from a string in objective c

Question

i have a string which has both numeric and character value.

Like: string = abc1234

Now I want to get only the integer part from it:

i.e. 1234

How can I do this? I have tried the following with no luck:

  NSString *str = @"abc123";
  int s = [str intValue];

Answer 1

Use this function

- (NSString *)extractNumberFromText:(NSString *)text
{
  NSCharacterSet *nonDigitCharacterSet = [[NSCharacterSet decimalDigitCharacterSet] invertedSet];
  return [[text componentsSeparatedByCharactersInSet:nonDigitCharacterSet] componentsJoinedByString:@""];
}

It will help you.Thankyou