c# - MonoTouch (Xamarin) 中的简单 UIPickerView？

Question

谁能描述我如何使用 XCode 在单点触摸中创建 UIPickerView 并用示例数据填充它？

我确实看过这里的例子:https://github.com/xamarin/monotouch-samples/blob/master/MonoCatalog-MonoDevelop/PickerViewController.xib.cs但这并不是很有帮助，因为我在 XCode 中创建了我的 UIPickerView。这是我到目前为止所拥有的:

public partial class StatusPickerPopoverView : UIViewController
{
    public StatusPickerPopoverView (IntPtr handle) : base (handle)
    {
        pickerStatus = new UIPickerView();
        pickerStatus.Model = new StatusPickerViewModel();
    }

    public StatusPickerPopoverView (): base ()
    {
    }

    public class StatusPickerViewModel : UIPickerViewModel
    {
        public override int GetComponentCount (UIPickerView picker)
        {
            return 1;
        }

        public override int GetRowsInComponent (UIPickerView picker, int component)
        {
            return 5;
        }

        public override string GetTitle (UIPickerView picker, int row, int component)
        {

            return "Component " + row.ToString();
        }
    }
}

Answer 1

所以我基本上找到了答案，它比你想象的要容易得多!

模型必须在 ViewDidLoad 中设置，否则会崩溃...这就是它没有被正确填充的原因。记住:在“ViewDidLoad”中设置。

public partial class StatusPickerPopoverView : UIViewController
{
    public StatusPickerPopoverView (IntPtr handle) : base (handle)
    {
    }

    public override ViewDidLoad()
    {
        base.ViewDidLoad();

        pickerStatus = new UIPickerView();
        pickerStatus.Model = new StatusPickerViewModel();
    }

    public class StatusPickerViewModel : UIPickerViewModel
    {
        public override int GetComponentCount (UIPickerView picker)
        {
            return 1;
        }

        public override int GetRowsInComponent (UIPickerView picker, int component)
        {
            return 5;
        }

        public override string GetTitle (UIPickerView picker, int row, int component)
        {

            return "Component " + row.ToString();
        }
    }
}