custom uitableheader view - uitableview

Question

I want to put a custom view inside my uitableviewheader, this custom view has an UILabel and a UITextView, the label have a fixed size while uitextview need to change depending the content of uitextview.
For doing it I use this code:
- (CGFloat) tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return 100;
}
- (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
headerView = [[UIView alloc] initWithFrame:CGRectMake(0,0,320,100)];
headerView.backgroundColor = [UIColor blueColor];
NSString *userString = [user username];
UILabel *userLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];
[userLabel setTextAlignment:NSTextAlignmentCenter];
[userLabel setText:userString];
userLabel.backgroundColor = [UIColor redColor];
[headerView addSubview:userLabel];
UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(0, 40, 320, 60)];
NSString *postString = [currentPost objectForKey:#"postTextKey"];
textView.text = postString;
[headerView addSubview:textView];
CGRect frame = textView.frame;
frame.size.height = textView.contentSize.height;
textView.frame = frame;
frame = headerView.frame;
frame.size.height = textView.frame.size.height+40;
headerView.frame = frame;
self.tableView.tableHeaderView.frame = headerView.frame;
return headerView;
}
the problem is that if the headerview have the correct height the tableviewheader is wrong. Where is the mistake?

Answer 1

1) tableHeaderView is different from section header view (headerViewForSection:)
2) If you want to change the height you specify it in the - (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section method and then call the reloadData method if the height changes.
Note: you don't want to do that too often.