在ios11中，storyboard上面UINavigationBar中直接添加SegmentedControl后不能使用封锉，所以可以通過(guò)代碼形式創(chuàng)建。
override func viewDidLoad() {
super.viewDidLoad()
//分段選項(xiàng)顯示
let items = ["精選","頻道"]
//初始化對(duì)象
let segmentedControl = UISegmentedControl(items:items)
//設(shè)置位置
segmentedControl.frame = CGRect(x: (self.navigationController?.view.frame.width)!/2-60, y: (self.navigationController?.navigationBar.frame.height)!/2 - 12.5, width: 120, height: 25)
segmentedControl.tintColor = UIColor(red: 75/255, green: 191/255, blue: 240/255, alpha: 1)
//當(dāng)前選中下標(biāo)
segmentedControl.selectedSegmentIndex = 0
//添加事件
segmentedControl.addTarget(self, action: #selector(segmentedControlChanged), for: UIControlEvents.valueChanged)
//添加
self.navigationController?.navigationBar.addSubview(segmentedControl)
// Do any additional setup after loading the view.
}
//選擇點(diǎn)擊后的事件
@objc func segmentedControlChanged(sender:UISegmentedControl) {
print(sender.selectedSegmentIndex)
}
