How to count the number of lines in an Objective-C string (NSString)?

Question

I want to count the lines in an NSString in Objective-C.

  NSInteger lineNum = 0;
  NSString *string = @\"abcde\\nfghijk\\nlmnopq\\nrstu\";
  NSInteger lengt         


        

Answer 1

Apple recommends this method:

NSString *string;
unsigned numberOfLines, index, stringLength = [string length];

for (index = 0, numberOfLines = 0; index < stringLength; numberOfLines++)
    index = NSMaxRange([string lineRangeForRange:NSMakeRange(index, 0)]);

See the article. They also explain how to count lines of wrapped text.