How to check whether a string contains white spaces

Question

How to check whether a string contains whitespaces in between characters?

Answer 1

use rangeOfCharactersFromSet:

NSString *foo = @"HALLO WELT"; NSRange whiteSpaceRange = [foo rangeOfCharacterFromSet:[NSCharacterSet whitespaceCharacterSet]]; if (whiteSpaceRange.location != NSNotFound) {     NSLog(@"Found whitespace"); } 

note: this will also find whitespace at the beginning or end of the string. If you don't want this trim the string first...

NSString *trimmedString = [foo stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; NSRange whiteSpaceRange = [trimmedString rangeOfCharacterFromSet:[NSCharacterSet whitespaceCharacterSet]];