CODEWITHSUNDEEP
iosobjective-cuitextviewnsattributedstring
A_G
A_G

Reputation: 2370

Extra space at the end of UITextView

I added text in UITextView and to understand the boundaries I colored my UITextView with cyan color.

enter image description here

After google.com there is some extra space which I want to remove. 

- (void)viewDidLoad {
        [super viewDidLoad];
        NSString *desc = [self htmlAfterReplacingTagsAndAddingStyle];
        _descriptionTextView.attributedText = [[NSAttributedString alloc] initWithData: [desc dataUsingEncoding:NSUTF8StringEncoding] options: @{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType } documentAttributes:nil error:nil];
        _descriptionTextView.linkTextAttributes = @{ NSForegroundColorAttributeName: [UIColor blueColor], NSUnderlineStyleAttributeName: [NSNumber numberWithInt:NSUnderlineStyleSingle] };
        _descriptionTextView.dataDetectorTypes = UIDataDetectorTypeLink;
        _descriptionTextView.scrollEnabled = NO;
        [self setTextViewHeight];
    }

setTextViewHeight

- (void)setTextViewHeight {
    UIFont *font = [UIFont fontWithName:@"OpenSans" size:14.0];
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, _descriptionContainer.frame.size.width, CGFLOAT_MAX)];
    label.numberOfLines = 0;
    label.lineBreakMode = NSLineBreakByWordWrapping;
    label.font = font;
    NSString *desc = [self htmlAfterReplacingTagsAndAddingStyle];
    label.attributedText = [[NSAttributedString alloc] initWithData: [desc dataUsingEncoding:NSUTF8StringEncoding] options: @{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType } documentAttributes:nil error:nil];
    [label sizeToFit];
    _descriptionTextView.backgroundColor = UIColor.cyanColor;
    [_descriptionTextView setContentInset:UIEdgeInsetsMake(0, 0, -80, 0)];
    _descriptionContainerHeight.constant = label.frame.size.height;
    }

I read about setting content inset but that is not helpful. Changing the value of -80 doesn't have any impact.

I would appreciate some pointers which can help me remove the extra space present at the bottom of uitextView.

Upvotes: 0

Views: 2054

Answers (3)

Lal Krishna
Lal Krishna

Reputation: 16160

To remove all padding:

[textView setTextContainerInset:UIEdgeInsetsZero];
textView.textContainer.lineFragmentPadding = 0; // to remove left padding

If you want to remove Multiple new lines into single one, In textViewDidEndEditing:

NSError *error = nil;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"\n+" options:NSRegularExpressionCaseInsensitive error:&error];
NSString *trimmedString = [regex stringByReplacingMatchesInString:string options:0 range:NSMakeRange(0, [string length]) withTemplate:@" "];
textView.text = trimmedString;

Upvotes: 1

danh
danh

Reputation: 62686

You should be able to get somewhere with textContainerInset (see @ReinierMelian answer). There's also opportunity to vastly simplify the text height measurement...

UIFont *font = [UIFont fontWithName:@"OpenSans" size:14.0];
CGFloat width = _descriptionTextView.bounds.size.width;
NSString *string = [self htmlAfterReplacingTagsAndAddingStyle];
CGRect rect = [string boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{ NSFontAttributeName:font } context:nil];

CGRect frame = _descriptionTextView.frame;
frame.size = CGSizeMake(width, rect.size.height);
_descriptionTextView.frame = frame;
// due to @ReinierMelian...
_descriptionTextView.extContainerInset = UIEdgeInsetsMake(0, 0, 0, 0);

Upvotes: 0

Reinier Melian
Reinier Melian

Reputation: 20804

Use 

 [_descriptionTextView setTextContainerInset:UIEdgeInsetsMake(0, 0, 0, 0)];

as can be readed in UITextView Class reference

textContainerInset Property The inset of the text container's layout area within the text view's content area.

Declaration

OBJECTIVE-C @property(nonatomic, assign) UIEdgeInsets textContainerInset

Discussion

This property provides text margins for text laid out in the text view. By default the value of this property is (8, 0, 8, 0).

Hope this helps

Upvotes: 2

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