Question

Are there any methods available to check whether a UITextField contains roman numerals like i,ii,iii,iv…etc???

Answer 1

The only thing you can do (but maybe there are some other solution) is to check the UITextField string for those letter :

Bool find = NO;
NSArray *romans = [NSArray arrayWithObjects:@"i", @"ii", @"ii", @"vi", nil]; //Fill the array as you want

for(NSString *str in romans)
{
  if([textField.text rangeOfString:str].location != NSNotFound)
  {
    find = YES;
    break;
  }
}

if(find)
{
  //Roman letter found
}