UISegmentedControl change number of segments programmatically

Question

Is there a way to change the number of segments programmatically?

Answer 1

Yes, you can use

removeSegmentAtIndex:(NSUInteger) animated:(BOOL)

And

insertSegmentWithTitle:(NSString *) atIndex:(NSUInteger) animated:(BOOL)

Answer 2

To replace the segments entirely, you can use the following function:

- (void)setSegments:(NSArray *)segments
{
    [segmentController removeAllSegments];

    for (NSString *segment in segments) {
        [segmentController insertSegmentWithTitle:segment atIndex:segmentController.numberOfSegments animated:NO];
    }
}

Hope this helps.

Answer 3

And here's a little Swift extension to replace current segmentedControl with array of new values

Swift 3

extension UISegmentedControl {
    func replaceSegments(segments: Array<String>) {
        self.removeAllSegments()
        for segment in segments {
            self.insertSegmentWithTitle(segment, atIndex: self.numberOfSegments, animated: false)
        }
    }
}

Swift 4

extension UISegmentedControl {
    func replaceSegments(segments: Array<String>) {
        self.removeAllSegments()
        for segment in segments {
            self.insertSegment(withTitle: segment, at: self.numberOfSegments, animated: false)
        }
    }
}