UITable cell selection in a SplitViewController

I have a UISplitViewController with a Table View for navigation. It's similar to the Mail app. When you click on a table view in portrait mode, the popup hides itself. When you click on the nav bar to get the popup back, the selected item no longer appears selected. How can make this i开发者_如何学编程tem appear selected without re-selecting the item? (just like in the mail app)

In your viewDidLoad method, do you call

self.clearsSelectionOnViewWillAppear = NO; ?

This is how Xcode's SplitView template does it.

Do you have by any change a

[tableView deselectRowAtIndexPath:indexPath animated:YES];

in your didSelectRowAtIndexPath in the RootViewController ?

I've got a solution that works, but it's frustratingly hacky. I have to call selectRowAtIndexPath twice. It seems that cellForRowAtIndexPath is invalidating the selection made in viewWillAppear. It still needs to be called in viewDidAppear, however, so the view scrolls to the proper position before cellForRowAtIndexPath is called.

- (void)viewWillDisappear:(BOOL)animated
{
    NSIndexPath *selected = [self.tableView indexPathForSelectedRow];
    _selectedRow = selected.row;
}

- (void)viewDidAppear:(BOOL)animated
{
    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:_selectedRow inSection:0];
    [self.tableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionMiddle];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    //initialize cell code here...

    if (indexPath.row == _selectedRow) {
        [self.tableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionMiddle];
    }   
}

For your table view controller, is -viewWillAppear: called before the pop-up is displayed? If so, you could write it as so:

- (void)viewWillAppear:(BOOL)animated
{
    [self.tableView selectRowAtIndexPath:<indexPath>
                                animated:animated
                          scrollPosition:UITableViewScrollPositionMiddle];

    [super viewWillAppear:animated];
}

Obviously, replace <indexPath> with the proper index path and set the scroll position how you want it. You may also want to pass NO instead of animated to make it appear like it was selectd before the view appeared.