如何将分段控件添加到导航栏？ （IOS）

Question

我想在像这样的导航栏中添加一个分段控件

但是当我将分段控件拖到导航栏时，大标题就消失了。如何创建上面的UI？

Answer 1

您应该将分段控件添加为导航栏的titleView。以下是示例代码：

let titles = ["All", "Missed"]
segmentControl = UISegmentedControl(items: titles)
segmentControl.tintColor = UIColor.white
segmentControl.backgroundColor = UIColor.blue
segmentControl.selectedSegmentIndex = 0
for index in 0...titles.count-1 {
    segmentControl.setWidth(120, forSegmentAt: index)
}
segmentControl.sizeToFit()
segmentControl.addTarget(self, action: #selector(segmentChanged), for: .valueChanged)
segmentControl.selectedSegmentIndex = 0
segmentControl.sendActions(for: .valueChanged)
navigationItem.titleView = segmentControl

Answer 2

您可以尝试以下简单的代码，

var segmentedController: UISegmentedControl!

let items = ["Label A", "Label B"]
segmentedController = UISegmentedControl(items: items)
navigationItem.titleView = segmentedController
navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Edit", style: .plain, target: self, action: #selector(handleSignOut))
navigationItem.rightBarButtonItem?.tintColor = UIColor.black