UITextView if line numbers is 2

Question

Is there is anyway to check the number of lines in a UITextview?

I searched on the internet but I found nothing.

first search result on google, you made no effort to find this http://stackoverflow.com/questions/5837348/counting-the-number-of-lines-in-a-textview-lines-wrapped-by-frame-size — Simon McLoughlin, Feb 27 '14 at 13:34
http://stackoverflow.com/questions/17171847/limiting-the-number-of-lines-within-a-uitextview — codercat, Feb 27 '14 at 13:43

Emmanuel · Answer 1 · 2014-02-27T14:18:05.710

For iOS7, a version that take care that you can have differents font (and font size) in your UITextView :

- (NSUInteger)numberOfLines
{
    NSLayoutManager *layoutManager = [textView layoutManager];
    NSUInteger index, numberOfLines;
    NSRange glyphRange = [layoutManager glyphRangeForTextContainer:[textView textContainer]];
    NSRange lineRange;

    for (numberOfLines = 0, index = glyphRange.location; index < glyphRange.length; numberOfLines++){
        (void) [layoutManager lineFragmentRectForGlyphAtIndex:index
                                               effectiveRange:&lineRange];
        index = NSMaxRange(lineRange);
    }
    return numberOfLines;
}

For more info, Apple docs for this method is here: https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/TextLayout/Tasks/CountLines.html — James Kuang, Jan 11 '15 at 01:24

score 0 · Accepted Answer · edited May 23 '17 at 11:58

0

For Count the number of lines of text

int numLines = textView.contentSize.height / textView.font.lineHeight;
NSLog(@"number of line - %d", numLines);

And for iOS 7 see this Question/Answer.

EDIT for iOS < 7:

This is proper answer

UIFont *myFont = [UIFont boldSystemFontOfSize:13.0]; // your font with size
CGSize size = [textView.text sizeWithFont:myFont  constrainedToSize:textView.frame.size  lineBreakMode:UILineBreakModeWordWrap]; // default mode
int numLines = size.height / myFont.lineHeight;
NSLog(@"number of line - %d", numLines);

edited May 23 '17 at 11:58

Community

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answered Feb 27 '14 at 13:35

iPatel

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content size can be different depending on the frame, this will not give you the right results – Basheer_CAD Feb 27 '14 at 13:41
@Basheer_CAD - I checked by this code with diff. frame of UITextView, It's working for me .. Thanks :) – iPatel Feb 27 '14 at 13:45
contentSize won't always work correctly because if you fill a text view with more text than fits in its frame, the content might or might not enable scrolling, depending on the settings. – Duncan C Feb 27 '14 at 13:54
@DuncanC - Yes this is not working all time so I edited my answer.. please check it. – iPatel Feb 27 '14 at 13:57
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@iPatel, don't forget that sizeWithFont is deprecated, you have to update your answer by saying this ;) – Basheer_CAD Feb 27 '14 at 14:01
@Basheer_CAD - I already put solution for iOS 7. – iPatel Feb 27 '14 at 14:04
now its the charm then :) – Basheer_CAD Feb 27 '14 at 14:04

score 0 · Answer 3 · answered Feb 27 '14 at 13:36

0

Although you didn't search a lot, here's a way :

CGSize size = [myString sizeWithFont:textView.font constrainedToSize:CGSizeMake(textView.frame.size.width,999) lineBreakMode:UILineBreakModeWordWrap];
int numLines = size.height / textView.font.lineHeight;

answered Feb 27 '14 at 13:36

rdurand

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`sizeWithFont` is deprecated, consider using `sizeWithAttributes` and `boundingRectWithSize`. – JMarsh Feb 27 '14 at 13:39
@JMarsh, sizeWithFont:constrainedToSize:lineBreakMode: is deprecated in iOS 7, but is the **CORRECT** way to do it in iOS < 7 (the alternative, boundingRectWithSize:options:attributes:context:, is ONLY available in iOS 7.) Thus rdurand's approach is quite reasonable for an app that runs on iOS < 7 as well as iOS 7. – Duncan C Feb 27 '14 at 13:51
@DuncanC : thanks (lol). JMarsh : you're correct, and there certainly are other ways, this is *a* way to do it. – rdurand Feb 27 '14 at 14:15

UITextView if line numbers is 2

3 Answers3