ios - 简单的 UIPickerView 错误

Question

我在 myPicker.dataSource = self 线上收到以下错误。有谁知道这是为什么或者我可以做些什么来解决它？

Threat 1:EXC_BAD_INSTRUCTION (code=EXC_1386_INVOP, subcode=0x0)

这是代码:

import UIKit

class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {

    @IBOutlet var myPicker: UIPickerView!
    @IBOutlet var textFIled: UITextField!

    let pickerData = ["Mozzarella","Gorgonzola","Provolone","Brie","Maytag Blue","Sharp Cheddar","Monterrey Jack","Stilton","Gouda","Goat Cheese", "Asiago"]

    override func viewDidLoad() {
        super.viewDidLoad()
        myPicker.dataSource = self
        myPicker.delegate = self
    }

    func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
        return 1
    }
    func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return pickerData.count
    }
    func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return pickerData[row]
    }

    func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        textFIled.text = pickerData[row]
    }
}

Answer 1

当您的 IBOulet 未正确连接到 Storyboard中的 UIPickerView 时，就会发生这种情况。删除所有连接并重新连接。