Can I figure out the numberOfLines of NSString without creating UILabel? - ios

Question

I just want to know number of lines, given the font, constraints, and the text. Can I figure it out without creating a UILabel?
+ (int)numberOfLines:(NSDictionary *)data{
NSString *myString = [some string calculation];
CGSize sizeConstrain = CGSizeMake(some constrain calculation);
CGSize stringSize = [myString sizeWithFont:someFont constrainedToSize:sizeConstrain];
CGRect labelFrame = CGRectMake(0,
0,
stringSize.width,
stringSize.height + 2);
UILabel *label = [[UILabel alloc]initWithFrame:labelFrame];
label.text = myString;
return label.numberOfLines;
}

Answer 1

Yes
+ (int)numberOfLines:(NSDictionary *)data{
NSString *myString = [some string calculation];
CGSize sizeConstrain = CGSizeMake(some constrain calculation);
CGSize stringSize = [myString sizeWithFont:someFont constrainedToSize:sizeConstrain];
return (stringSize.height/someFont.lineHeight);
}
EDIT: I used this for UITextView and iOS7
- (CGFloat) getRowsForText:(NSString*) text{
CGFloat fixedWidth = 300;
UIFont *font = [UIFont fontWithName:#"HelveticaNeue" size:14];
NSMutableParagraphStyle *paragrapStyle = [[NSMutableParagraphStyle alloc] init];
paragrapStyle.alignment = NSTextAlignmentLeft;
textStepAttr = [NSDictionary dictionaryWithObjectsAndKeys:
font,NSFontAttributeName,
paragrapStyle, NSParagraphStyleAttributeName,
nil];
NSAttributedString *attributedText = [[NSAttributedString alloc] initWithString:text attributes:textStepAttr];
CGRect rect = [attributedText boundingRectWithSize:CGSizeMake(fixedWidth, MAXFLOAT)
options:NSStringDrawingUsesLineFragmentOrigin
context:nil];
return (rect.size.height / font.lineHeight) ;
}