Disabling UINavigationItem custom right view?

Question

I create a custom right view as follows:

// Build the Segmented Control
NSArray *segmentTextContent = [NSArray arrayWithObjects:[UIImage imageNamed:@"arrow-dice.png"], [UIImage imageNamed:@"arrow-up.png"], [UIImage imageNamed:@"arrow-down.png"], nil];
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:segmentTextContent];

// Customize the Segmented Control
segmentedControl.momentary = YES;
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
[segmentedControl addTarget:self action:@selector(segmentChanged:) forControlEvents:UIControlEventValueChanged];

Then I add it to my navigation bar as follows:

// Add the control to the navigation bar right item
UIBarButtonItem *segmentItem = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl];
[segmentedControl release];
self.navigationItem.rightBarButtonItem = segmentItem;
self.navigationItem.rightBarButtonItem.title = @"";
[segmentItem release];

I can hide it as follows:

self.navigationItem.rightBarButtonItem.customView.hidden = NO;

QUESTION ...but how can I disable all (or better, a specific element) of the segmented control?

The following does not work.

self.navigationItem.rightBarButtonItem.enabled = NO;

Any ideas appreciated...

Thanks,
matt

Answer 1

UISegmentedControl.h

- (void)removeSegmentAtIndex:(NSUInteger)segment animated:(BOOL)animated;
- (void)removeAllSegments;
- (void)setEnabled:(BOOL)enabled forSegmentAtIndex:(NSUInteger)segment;       //default is YES

  e.g. [segmentedControl setEnabled:NO forSegmentAtIndex:1];

Hope That helps