Question

我尝试创建一个执行API调用的框架，并使用API调用中的填充数据创建PickerView。 iOS客户端将导入此框架并调用一个公开的函数，该函数应返回PickerView及其中加载的数据。

我设法创建了一个创建PickerView的函数，但无法弄清楚如何在PickerView中插入数据。

    // Framework Side

    public static func returnPickerView() -> UIPickerView {
    let apple = ["apple", "orange", "durian", "banana"]

    let customPicker = UIPickerView()

    customPicker.frame = CGRect(x: 0, y: 0, width: 300, height: 300)
    customPicker.layer.borderColor = UIColor.black.cgColor
    customPicker.layer.borderWidth = 1

    return customPicker
}

Answer 1

解决这个问题的方法是创建一个像JuicyFruit所说的自定义类。

class CustomPickerView: UIPickerView {  
    override init(frame: CGRect) {
        super.init(frame: frame)

        dataSource = self
        delegate = self
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
}

extension CustomPickerView: UIPickerViewDelegate {
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        ...
    }

    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        ...
    }
}

extension CustomPickerView: UIPickerViewDataSource {
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        ...
    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        ...
    }
}

可以创建一个返回PickerView数据的函数吗？

1 个答案: