CODEWITHSUNDEEP
iphoneuitableviewuiscrollview
4thSpace
4thSpace

Reputation: 44310

UIScrollView in UITableCellView, cell doesn't update

I have a custom UITableViewCell with a UIScrollView in it that is wired to the cell controller. When I assign text to the scrollview, some cells get the correct text, some are blank, some redisplay old text and others have the scrollview clipped around the 2nd or 3rd line of text. It seems random on what will happen. I followed the suggestion here of using a timer to fix blank cells, http://www.bdunagan.com/2008/12/08/uitextview-in-a-uitableview-on-the-iphone/, but that didn't help. I placed the timer code in the cellForRowAtIndexPath method.

I've also tried calling

[cell.textview setNeedsDisplay];

after text is assigned to the textview but it doesn't have any affect.

When I use a textfield or label, everything looks fine. However, I need something that can scroll text. Any suggestions on a fix or better way?

Upvotes: 0

Views: 2215

Answers (1)

Corey Floyd
Corey Floyd

Reputation: 25969

Update: Found this on the dev forums (specifically mentions your problem):

https://devforums.apple.com/message/38944#38944

I would follow the link it has some more detailed info.

 // view controller

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
     NSArray*     visibleCells = [self.tableView visibleCells];

     for (UITableViewCell* cell in visibleCells)
     {
          if ([cell.reuseIdentifier isEqualToString:kTextViewCellID])
          {
               [(MTextViewCell*)cell refresh];
          }
     }
}

// MTextViewCell 


- (void)refresh
{
     // mucking with the contentOffset causes the textView to redraw itself
     CGPoint     contentOffset = mTextView.contentOffset;
     CGPoint     contentOffset1 = { contentOffset.x, contentOffset.y + 1.0f };

     mTextView.contentOffset = contentOffset1;
     mTextView.contentOffset = contentOffset;
}

Try calling:

[tableView reloadData];

After you update all the textViews.

Upvotes: 1

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