UITableView layout not refreshing until scrolled - iphone

Question

I have created a UISplitViewApplication as my new project. In the potrait mode I have a button that when clicked will drop down a UITableView. It looks something as the following:
When I clicked on one of the rows, this UITableView is dismissed. Then when I click again on the Groups button, the layout of the UITableView presented is now all messy:
However, when I scroll the TableView so that some of the rows are reloaded again, those that are reloaded are then formatted fine. Why is this and how do I fix this?
Here's my cell for row at index path:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"MyCell";
MyCell *cell = (ConvoreCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
//if (cell == nil) {
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"MyCell" owner:nil options:nil];
for (id currentObject in topLevelObjects){
if ([currentObject isKindOfClass:[UITableViewCell class]]){
cell = (MyCell *) currentObject;
break;
}
}
cell.delegate = self;
// }
if ([posts count] > 0){
cell.star.hidden = YES;
[lazyImages addLazyImageForCell:cell withIndexPath:indexPath];
cell.title.text = [[posts objectAtIndex:indexPath.row] message];
cell.detailed.autoresizesSubviews = YES;
cell.detailed.text = [NSString stringWithFormat:#"%#", [[[posts objectAtIndex:indexPath.row] creator] username]];
if ([[[posts objectAtIndex:indexPath.row] embeds] count] != 0){
NSString * URL = [[[[posts objectAtIndex:indexPath.row] embeds] objectAtIndex:0] url];
float height = [[(Embed * )[[[posts objectAtIndex:indexPath.row] embeds] objectAtIndex:0] height] floatValue];
float width = [[(Embed * )[[[posts objectAtIndex:indexPath.row] embeds] objectAtIndex:0] width] floatValue];
[cell.embed setFrame:CGRectMake(cell.detailed.frame.origin.x, cell.detailed.frame.origin.y + 15, width, height)];
cell.embed.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:URL]]];
}
if ([[[posts objectAtIndex:indexPath.row] stars] count] != 0){
cell.star.hidden = NO;
cell.star_creator.text = [(Login *)[[[[posts objectAtIndex:indexPath.row] stars] objectAtIndex:0] user] username];
}
}
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *cellText =[[posts objectAtIndex:indexPath.row] message];
UIFont *cellFont = [UIFont fontWithName:#"Arial" size:14.0];
CGSize constraintSize = CGSizeMake(600.0f, MAXFLOAT);
CGSize labelSize = [cellText sizeWithFont:cellFont constrainedToSize:constraintSize lineBreakMode:UILineBreakModeWordWrap];
float height = 0.0;
if ([[[posts objectAtIndex:indexPath.row] embeds] count] != 0)
height = [[[[[posts objectAtIndex:indexPath.row] embeds] objectAtIndex:0] height] floatValue];
if (labelSize.height + 20 + height < 48)
return 55;
else
return labelSize.height + height + 48;
}

Answer 1

Reposted from a previous comment: reload the visible cells in viewWillAppear.

Answer 2

I have been through this before, In your CellForRowAtIndex delegate and don't check if the cell equals nil just keep going.
Update
NSString *sIdentifier = [NSString stringWithFormat:#"MyIdentifier %i", indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:sIdentifier];
// don't check if(cell == nil)
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:sIdentifier] autorelease];