CODEWITHSUNDEEP
iosobjective-cuiscrollviewuitextview
iOS.Lover
iOS.Lover

Reputation: 6051

Scrolling to the end of UITextView's text

I have some contents in a view (such as images, labels) and the last item is a description (UITextView). Now I am trying to scroll the contents dynamically based on UITextView text. Here is my code:

- (void)viewDidAppear:(BOOL)animated {

    _descriptions.scrollEnabled = NO;
    [_descriptions sizeToFit];

    _infoScrollView.contentSize = CGSizeMake(_contentsOnInfoView.frame.size.width,
                                             _contentsOnInfoView.frame.size.height + _descriptions.frame.size.height);
}

Here is the result:

As you can see, there is lots of empty space. I need to scroll to the end of text.

Upvotes: 2

Views: 300

Answers (4)

iOS.Lover
iOS.Lover

Reputation: 6051

I just found the answer,in the UI there is line that separates descriptions with the some infos ! I just calculate the line's y and sum up with the descriptions height :

_descriptions.scrollEnabled = NO;
[_descriptions sizeToFit];
_infoScrollView.contentSize = CGSizeMake(_infoView.frame.size.width, _line.frame.origin.y + _descriptions.bounds.size.height);

now it works fine !

Upvotes: -2

Shreyank
Shreyank

Reputation: 1549

You should write you code in

-(void) viewDidLayoutSubviews {}

In this method,All components have frame according to running device size. and execute before appear the view.

Upvotes: 2

Satyanarayana
Satyanarayana

Reputation: 1067

//may be it will work for you
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];
    //set the line break mode
    paragraphStyle.lineBreakMode = NSLineBreakByWordWrapping;

    NSDictionary *attrDict = [NSDictionary dictionaryWithObjectsAndKeys: description.font,
                              NSFontAttributeName,
                              paragraphStyle,
                              NSParagraphStyleAttributeName,
                              nil];


    CGRect rect = [description.text boundingRectWithSize:CGSizeMake(description.size.width, FLT_MAX)
                                                  options:NSStringDrawingUsesLineFragmentOrigin
                                               attributes:attrDict
                                                  context:nil];
    CGSize size = rect.size;
   _infoScrollView.contentSize = CGSizeMake(_contentsOnInfoView.frame.size.width,description.frame.origin.y + size.height + 20)

Upvotes: 0

Akash KR
Akash KR

Reputation: 798

I'd suggest you to try this.

[myTextView scrollRangeToVisible:NSMakeRange([myTextView.text length], 0)]

Upvotes: 6

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