UITableViewCell contentView example in Objective C (iOS).

UITableViewCell contentView

Returns the content view of the cell object. (read-only)

@property(nonatomic, readonly, retain) UIView *contentView

Discussion of [UITableViewCell contentView]
The content view of a UITableViewCell object is the default superview for content displayed by the cell. If you want to customize cells by simply adding additional views, you should add them to the content view so they will be positioned appropriately as the cell transitions into and out of editing mode.

UITableViewCell contentView example.

- (UITableViewCell *)tableView:(UITableView *)theTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [theTableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier] autorelease];
    }
    else{
      [[cell.contentView viewWithTag:500] removeFromSuperview];
    }

    ...

    graphView.tag = 500;
    [cell.contentView addSubview:graphView];
}

Example of [UITableViewCell contentView].

- (void) layoutSubviews
{
  [super layoutSubviews];

  CGRect contentViewFrame = self.contentView.frame;
  contentViewFrame.size.width = 302;
  self.contentView.frame = contentViewFrame;

  [...]
}

UITableViewCell contentView example.

-(void)awakeFromNib{
  [super awakeFromNib];
  for(NSLayoutConstraint *cellConstraint in self.constraints){
    [self removeConstraint:cellConstraint];
    id firstItem = cellConstraint.firstItem == self ? self.contentView : cellConstraint.firstItem;
    id seccondItem = cellConstraint.secondItem == self ? self.contentView : cellConstraint.secondItem;
    NSLayoutConstraint* contentViewConstraint =
    [NSLayoutConstraint constraintWithItem:firstItem
                                 attribute:cellConstraint.firstAttribute
                                 relatedBy:cellConstraint.relation
                                    toItem:seccondItem
                                 attribute:cellConstraint.secondAttribute
                                multiplier:cellConstraint.multiplier
                                  constant:cellConstraint.constant];
    [self.contentView addConstraint:contentViewConstraint];
  }
}

End of UITableViewCell contentView example article.