(1) MainViewController.swiftimport UIKitimport SnapKitimport RxSwiftimport RxCocoaclass MainViewController: UIViewController { private lazy var underlineSegmentedControl: UISegmentedControl = { let segmentedControl = UnderlineSegmentedControl(items: ["First", "Second", "Third"]) segmentedControl.selectedSegmentIndex = 0 segmentedControl.setTitleTextAttributes( ..