ios - 单击时以编程方式生成的按钮使应用程序崩溃。

Question

我正在尝试在给定初始值的情况下快速动态生成按钮，大小为 8 的数组将生成 8 个按钮。

但是，即使代码有效，每当我单击任何生成的按钮时，应用程序都会立即崩溃并显示错误代码“thread 1 signal SIGABRT”并且控制台显示“libc++abi.dylib:以未捕获的异常终止” NSException 类型”。

然后我指向 AppDelegate.swift 中包含“class AppDelegate: UIResponder, UIApplicationDelegate {”的行。

我已经尝试了其他类似问题中看到的建议，无济于事，请参见下面的代码

func generateButtons (){

    var numberOfVillains = ["1", "2", "3", "4", "5", "6", "7",  "8", "9", "10"]
    var buttonY: CGFloat = 126  // our Starting Offset, could be 0
    for number in numberOfVillains {
        let segmentController = UISegmentedControl()
        //let villainButton = UISegmentedControl(frame: CGRect(x: 50, y: buttonY, width: 50, height: 30)){
        buttonY = buttonY + 40  // we are going to space these UIButtons 50px apart
        segmentController.frame = CGRect(x:160, y:buttonY, width: 100,height:  30)
        //segment frame size
        segmentController.insertSegment(withTitle: "Off", at: 0, animated: true)
        //inserting new segment at index 0
        segmentController.insertSegment(withTitle: "On", at: 1, animated: true)
        //inserting new segment at index 1
        segmentController.backgroundColor = UIColor.white
        //setting the background color of the segment controller
        segmentController.selectedSegmentIndex = 0
        //setting the segment which is initially selected
        segmentController.addTarget(self, action: Selector(("segment:")), for: UIControlEvents.valueChanged)
        //calling the selector method
        self.view.addSubview(segmentController)
        //adding the view as subview of the segment comntroller w.r.t. main view controller
    }

}

func buttonPressed(sender: UISegmentedControl!) {
    print("ButtonIsSelected")
}

Answer 1

您正在按钮上设置 Selector(("segment:")) 的目标。但是你添加的处理点击的方法叫做 buttonPressed()

将 Selector(("segment:")) 更改为 Selector("buttonPressed:") 应该可以解决问题