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POincrease uitableviewcell height simultaneously increasing the inner UITextView
 

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    <p>I create a <code>UITableView</code> with different types of <code>UITableViewCell</code> depending on the type of content to display. One of this is a <code>UITableViewCell</code> with inside an <code>UITextView</code> programmatically created in this way:</p> <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { ... if([current_field.tipo_campo isEqualToString:@"text_area"]) { NSString *string = current_field.valore; CGSize stringSize = [string sizeWithFont:[UIFont boldSystemFontOfSize:15] constrainedToSize:CGSizeMake(320, 9999) lineBreakMode:UILineBreakModeWordWrap]; CGFloat height = ([string isEqualToString:@""]) ? 30.0f : stringSize.height+10; UITextView *textView=[[UITextView alloc] initWithFrame:CGRectMake(5, 5, 290, height)]; textView.font = [UIFont systemFontOfSize:15.0]; textView.text = string; textView.autoresizingMask = UIViewAutoresizingFlexibleWidth; textView.textColor=[UIColor blackColor]; textView.delegate = self; textView.tag = indexPath.section; [cell.contentView addSubview:textView]; [textView release]; return cell; } ... } </code></pre> <p>Since the text view is editable the cell that contains it should change its height to correctly fit the text view sizes. Initially I did this by resizing the <code>UITextView</code> inside the method <code>textViewDidChange</code>:, in this way:</p> <pre><code>- (void)textViewDidChange:(UITextView *)textView { NSInteger index = textView.tag; Field* field = (Field*)[[self sortFields] objectAtIndex:index]; field.valore = textView.text; [self.tableView beginUpdates]; CGRect frame = textView.frame; frame.size.height = textView.contentSize.height; textView.frame = frame; newHeight = textView.contentSize.height; [self.tableView endUpdates]; } </code></pre> <p>I save the new height of text view in a variable and then when <code>tableView:heightForRowAtIndexPath</code>: method is called, I resize the cell in this way:</p> <pre><code>- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { ... if ([current_field.tipo_campo isEqualToString:@"text_area"]) { return newHeight +10.0f; } else return 44.0f; ... } </code></pre> <p>In this way both are resized but is not done in sync, ie first the <code>TextView</code> is resized and then it is resized the height of the cell, so for an instant the user see that the text view is larger than the cell. How can I fix this bad behavior?</p>
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    1. COFor now i find a path setting the uitextview background to clearColor. It is trasparent and the bug is invisible.
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    2. COEverytime cellForRow... gets called you are allocating,initializing and adding UITextView as a subview. Why not do this setup only once by creating your own UITableViewCell subclass? Seems like the current way you are doing it would cause problems as a result of adding multiple UITextViews to the cell each time that method gets called like for example upon reloadData.
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    3. CO@cdo i noticed this error so I modified the code. If cell is nil i create the UITextView otherwise i recover it as a subview of the cell.
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