UITextView number of lines iOS 7

Question

In iOS 6 I used this code to get the number of lines in the UITextView:

int numLines = textView.contentSize.height / textView.font.lineHeight;

But this is not working in iOS 7. How do I get the total number of lines of the UITextView in iOS 7?

have a look here : http://stackoverflow.com/questions/19028743/ios7-uitextview-contentsize-height-alternative/19067476#19067476 — Jordan Montel, Oct 01 '13 at 18:17
Possible duplicate: http://stackoverflow.com/questions/5837348/counting-the-number-of-lines-in-a-textview-lines-wrapped-by-frame-size — Szu, Jun 11 '14 at 15:19
Possible duplicate of [Counting the number of lines in a UITextView, lines wrapped by frame size](https://stackoverflow.com/questions/5837348/counting-the-number-of-lines-in-a-uitextview-lines-wrapped-by-frame-size) — CristinaTheDev, Jul 25 '17 at 13:24
Possible duplicate of [How to find UITextView number of lines](https://stackoverflow.com/questions/7320361/how-to-find-uitextview-number-of-lines) — iWheelBuy, Dec 27 '17 at 07:35

score 4 · Accepted Answer · edited Oct 01 '13 at 19:04

4

You can use something like this. It's low performance but this is what I could figure till now.

NSString *string=textView3.text;
NSArray *array=[string componentsSeparatedByString:@"\n"];
NSLog(@"%d",array.count);

edited Oct 01 '13 at 19:04

hgwhittle

9,316
6
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answered Oct 01 '13 at 18:46

Islam El-shazly

147
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This only counts line-breaks, and not line-wraps, unless your UITextView is so wide that no wrapping takes place. – mahboudz Nov 03 '13 at 08:35
How could one get a line count while accounting for wrapping? – Ben Kane Dec 23 '13 at 21:18

mattsven · Answer 2 · 2015-03-16T15:48:53.433

You can do this with the UITextInputTokenizer/UITextInput protocol methods of UITextView.

id<UITextInputTokenizer> tokenizer = textView.tokenizer;
UITextPosition *pos = textView.endOfDocument; int lines = 0;

while (true){
    UITextPosition *lineEnd = [tokenizer positionFromPosition:pos toBoundary:UITextGranularityLine inDirection:UITextStorageDirectionBackward];

    if([textView comparePosition:pos toPosition:lineEnd] == NSOrderedSame){
        pos = [tokenizer positionFromPosition:lineEnd toBoundary:UITextGranularityCharacter inDirection:UITextStorageDirectionBackward];

        if([textView comparePosition:pos toPosition:lineEnd] == NSOrderedSame) break;

        continue;
    }

    lines++; pos = lineEnd;
}

//lines--; // Compensation for extra line calculated (??)

(GIST)

@JasonTyler I wonder why in my tests there was an extra line. Glad it worked for you, though. — mattsven, Nov 19 '14 at 02:16

Ayman Ibrahim · Answer 3 · 2015-01-11T16:21:03.737

you can pass the String and textView to this method and it will return the current number rows in this textview even if the user pressed new line:

-(int)numberOfRows:(NSString *)string inView:(UITextView*)txtView
{

CGSize maximumLabelSize = CGSizeMake(MAXFLOAT , MAXFLOAT);

NSStringDrawingOptions options = NSStringDrawingTruncatesLastVisibleLine |
NSStringDrawingUsesLineFragmentOrigin;

NSString *new = [string stringByReplacingOccurrencesOfString: @"\n" withString:@" "];
NSDictionary *attr = @{NSFontAttributeName: [UIFont fontWithName:urFont size:urSize]};
CGRect bounds = [new boundingRectWithSize:maximumLabelSize
                                          options:options
                                       attributes:attr
                                          context:nil];

CGSize viewSize = bounds.size;


int row = floor(txtView.contentSize.height / viewSize.height ) ;


return row;
}

UITextView number of lines iOS 7

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