swift 实践- 08 -- UISegmentedControl

import UIKit

class ViewController: UIViewController {

override func viewDidLoad() {

super.viewDidLoad()

// 选择空间的创建, 并监听控件的选择值

let items = ["选项1","选项2",UIImage.init(named: "1.png")!] as [Any]

let segment = UISegmentedControl.init(items: items)

segment.center = self.view.center

segment.selectedSegmentIndex = 1 // 默认选中项

segment.addTarget(self, action: #selector(didSeleted(sender:)), for: .valueChanged)

self.view.addSubview(segment)

// 添加文字选项

segment.insertSegment(withTitle: "新增选项", at: 1, animated: true)

// 添加图片选项

segment.insertSegment(with: UIImage.init(named: "1"), at: 1, animated: true)

// 移除选项

segment.removeSegment(at: 1, animated: true)

// 修改选项颜色 (包括图片选项)

segment.tintColor = UIColor.red

// 修改文字选项

segment.setTitle("swift", forSegmentAt: 1)

// 修改选项图片

// 下面的代码会自动变为蓝色

segment.setImage(UIImage.init(named: "1"), forSegmentAt: 2)

// 使用下面的代码, 图标会保留原来的颜色

segment.setImage(UIImage.init(named: "1")?.withRenderingMode(.alwaysOriginal), forSegmentAt: 2)

// 修改选项内容偏移位置

segment.setContentOffset(CGSize.init(width: 10, height: 7), forSegmentAt: 1)

}

func didSeleted(sender: UISegmentedControl){

print(sender.selectedSegmentIndex);

print(sender.titleForSegment(at: sender.selectedSegmentIndex) ?? "没有标题,可能是图片")

}

override func didReceiveMemoryWarning() {

super.didReceiveMemoryWarning()

// Dispose of any resources that can be recreated.

}

}