如何禁用 UISegmentedControl？

Question

我有以下 UISegmentedControl，我想将其禁用：

-(void)displayCheckMark
{
    titleSegmentedControl = [[UISegmentedControl alloc] initWithItems:nil];
    [titleSegmentedControl insertSegmentWithImage:[UIImage imageNamed:@"symbolbg.png"] atIndex:0 animated:YES];
    [titleSegmentedControl insertSegmentWithImage:[UIImage imageNamed:@"inwatchlist.png"] atIndex:1 animated:YES];
    [titleSegmentedControl addTarget:self action:@selector(titleBarButtonChanged:)forControlEvents:UIControlEventValueChanged];
    titleSegmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
    titleSegmentedControl.frame = CGRectMake(100,0,100,30);
    titleSegmentedControl.momentary = YES;
    titleSegmentedControl.tintColor = [UIColor blackColor];
    self.navigationItem.titleView = titleSegmentedControl;

    [titleSegmentedControl setWidth:60 forSegmentAtIndex:0];
    [titleSegmentedControl setTitle:symbol forSegmentAtIndex:0];
    [titleSegmentedControl setWidth:30 forSegmentAtIndex:1];
    [titleSegmentedControl setEnabled:NO];
}

我没有在代码中的任何位置启用它。但我仍然可以点击它，它会执行 titleBarButtonChanged 中的操作：

如何确保它不能被点击？

Answer 1

尝试使用：

- (void)setEnabled:(BOOL)enabled forSegmentAtIndex:(NSUInteger)segment;

或

titleSegmentedControl.userInteractionEnabled = NO;

Answer 2

在 titleBarButtonChanged:(id)sender 中添加：

if(!sender.enabled) return;