ios - 如何更改按钮上的操作目标 - Swift

Question

import Foundation
import MapKit

class CustomAnnotationView : MKPinAnnotationView
{
    let selectedLabel:UILabel = UILabel.init(frame:CGRectMake(0, 0, 250, 125))
    let Button:UIButton = UIButton.init(frame:CGRectMake(0, 0, 100, 38))

override func setSelected(selected: Bool, animated: Bool)
{
    super.setSelected(false, animated: animated)

    if(selected)
    {
        selectedLabel.text = annotation!.title!
        selectedLabel.center.x = 0.5 * self.frame.size.width
        selectedLabel.center.y = -0.5 * selectedLabel.frame.height

        self.addSubview(selectedLabel)

        Button.backgroundColor = UIColor.yellowColor()
        Button.setTitle("Press", forState: UIControlState.Normal)


        //the code below here //
var storyboard = UIStoryboard(name: "Main", bundle: nil)
            let Map = storyboard.instantiateViewControllerWithIdentifier("Map")
            Button.addTarget(Map, action: "buttonAction:", forControlEvents: UIControlEvents.TouchUpInside)

        //self.view.addSubview(button)
        Button.center.x = 0.5 * self.frame.size.width + 10
        Button.center.y = selectedLabel.center.y
        self.addSubview(Button)

    }
    else
    {
        selectedLabel.removeFromSuperview()
    }

}

//Map.swift 中的这个

    func buttonAction () {
        print("button pressed")
    }
}

而不是使用 Button.addTarget(self...当我在自定义类中编码时。我如何让它运行该操作？我还将 Storyboard的名称设置为右侧面板上的 Main，与 map 的名称相同。

Answer 1

调用setSelected方法后，Map被释放。您应该通过某些东西(属性，全局变量，...)来处理Map