swift 4.2实现操作表(ULAlertController

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        let screen = UIScreen.main.bounds
        let buttonActionSheet = UIButton(type: UIButton.ButtonType.system)
        buttonActionSheet.setTitle("Test操作表", for: UIControl.State())
        
        let buttonActionSheetWidth :CGFloat = 100
        let buttonActionSheetHeight :CGFloat = 30
        let buttonActionSheetTopView :CGFloat = 260
        
        buttonActionSheet.frame = CGRect(x: (screen.size.width - buttonActionSheetWidth)/2, y: buttonActionSheetTopView, width: buttonActionSheetWidth, height: buttonActionSheetHeight)
        buttonActionSheet.addTarget(self, action: #selector(testActionSheet(_:)), for: .touchUpInside)
        self.view.addSubview(buttonActionSheet)
         
    }
    
    
    
    @objc func testActionSheet(_ sender:AnyObject){
        
        let actionSheetController = UIAlertController()
        
        let cancelAction = UIAlertAction(title: "取消", style: UIAlertAction.Style.cancel) {(UIAlertAction) -> Void in
            print("Tap 取消 Button")
        }
        let destructiveAction = UIAlertAction(title: "破坏性按钮", style: UIAlertAction.Style.destructive) {(UIAlertAction) -> Void in
            print("Tap 破坏性按钮 Button")
        }
        let otherAction = UIAlertAction(title: "新浪微博", style: UIAlertAction.Style.default) {(UIAlertAction) -> Void in
            print("Tap 新浪微博 Button")
        }
        actionSheetController.addAction(cancelAction)
        actionSheetController.addAction(destructiveAction)
        actionSheetController.addAction(otherAction)
        
        actionSheetController.popoverPresentationController?.sourceView = sender as? UIView
        
        self.present(actionSheetController,animated: true,completion: nil)
        
    }
    


}

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