UISegmentedControl Within UIToolBar

Question

I know how to add a UISegmentedControl to a UIToolBar from within IB, but I am trying to do the same programmatically, because I am using a custom subclass of UISegmentedControl with doesn't have an XIB.

This is the code for the UISegmentedControl:

SVSegmentedControl *navSC = [[SVSegmentedControl alloc] initWithSectionTitles:[NSArray arrayWithObjects:@"List", @"Calendar", nil]];
navSC.delegate = self;
[self.view addSubview:navSC];
[navSC release];
navSC.center = CGPointMake(160, 70);

I was thinking of doing something like [self.toolbar addSubview:navSC], but that didn't show anything.

Sam

Note that you can create a regular UISegmentedControl in IB, then change its class to your custom subclass. Any properties specific to your subclass you'll have to set up in a method like awakeFromNib. – Incardination

Answer 1

You need to use the UIToolbar method – setItems:animated: (detailed in the documentation):

UIBarButtonItem *segItem = [[UIBarButtonItem alloc] initWithCustomView:navSC];
UIBarButtonItem *spaceItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:NULL];
[toolBar setItems:[NSArray arrayWithObjects:spaceItem,segItem,spaceItem,nil] animated:YES];
[segItem release];
[spaceItem release];

Zyrian

Isn't it necessary to wrap navSC in UIBarButtonItem? – Wellgroomed

@ZhangChn, I think you are right about wrapping it in a UIBarButtonItem first because right now, it is crashing the app. Can you show me how? – Sam

Thanks that worked perfectly. But do you know how I can center the button? Right now it is showing on the left side of the toolbar. – Sam

@Faisal: You could add flexible space (UIBarButtonSystemItemFlexibleSpace) on either side of the segment. – Zyrian

Ok I added this: ` UIBarButtonItem *fixedItem = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:NULL] autorelease];, but how do I add it to toolbar along with the segItem? – Sam

@Faisal: See above. Using flexible space pushes the middle item into the center. – Zyrian