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這是我的選擇器的模型類MonoTouch的Custon UIPicker獲得所選項目
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using MonoTouch.Foundation;
using MonoTouch.UIKit;
namespace Mobile.iOS
{
public class PickerDataModel : UIPickerViewModel
{
public event EventHandler<EventArgs> ValueChanged;
public List<string> Items
{
get { return this._items;}
set { this._items = value;}
}
List<string> _items = new List<string>();
public string SelectedItem
{
get { return this._items[this._selectedIndex]; }
}
protected int _selectedIndex = 0;
public PickerDataModel()
{
}
public override int GetRowsInComponent (UIPickerView picker, int component)
{
return this._items.Count;
}
public override string GetTitle (UIPickerView picker, int row, int component)
{
return this._items[row];
}
public override int GetComponentCount (UIPickerView picker)
{
return 1;
}
public override void Selected (UIPickerView picker, int row, int component)
{
this._selectedIndex = row;
if (this.ValueChanged != null)
{
this.ValueChanged (this, new EventArgs());
}
}
}
}
然後，我創建一個動作片，以顯示UIPicker這樣
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using MonoTouch.Foundation;
using MonoTouch.UIKit;
namespace Mobile.iOS
{
public class ActionSheetChildAgePicker
{
#region -= declarations =-
UIActionSheet actionSheet;
UIButton doneButton = UIButton.FromType (UIButtonType.RoundedRect);
UIView owner;
UILabel titleLabel = new UILabel();
#endregion
#region -= properties =-
public UIPickerView AgePicker
{
get { return agePicker; }
set { agePicker = value; }
}
//create agepicker
UIPickerView agePicker = new UIPickerView();
/// <summary>
/// The title that shows up for the date picker
/// </summary>
public string Title
{
get { return titleLabel.Text; }
set { titleLabel.Text = value; }
}
#endregion
#region -= constructor =-
/// <summary>
///
/// </summary>
public ActionSheetChildAgePicker (UIView owner)
{
// save our uiview owner
this.owner = owner;
// configure the title label
titleLabel.BackgroundColor = UIColor.Clear;
titleLabel.TextColor = UIColor.LightTextColor;
titleLabel.Font = UIFont.BoldSystemFontOfSize (18);
// configure the done button
doneButton.SetBackgroundImage(UIImage.FromBundle ("ZurfersMovil-LoginBar-SignButton.png"), UIControlState.Normal);
doneButton.SetTitleColor(MonoTouch.UIKit.UIColor.White, UIControlState.Normal);
doneButton.SetTitle ("done", UIControlState.Normal);
doneButton.TouchUpInside += (s, e) => { actionSheet.DismissWithClickedButtonIndex (0, true); };
// create + configure the action sheet
actionSheet = new UIActionSheet() { Style = UIActionSheetStyle.BlackTranslucent };
actionSheet.Clicked += (s, e) => { Console.WriteLine ("Clicked on item {0}", e.ButtonIndex); };
//Set picker Model and items
PickerDataModel agePickerDataModel = new PickerDataModel();
agePickerDataModel.Items.Add("<2");
agePickerDataModel.Items.Add("3");
agePickerDataModel.Items.Add("4");
agePickerDataModel.Items.Add("5");
agePickerDataModel.Items.Add("6");
agePickerDataModel.Items.Add("7");
agePickerDataModel.Items.Add("8");
agePickerDataModel.Items.Add("9");
agePickerDataModel.Items.Add("10");
agePickerDataModel.Items.Add("11");
agePickerDataModel.Items.Add("12");
agePickerDataModel.Items.Add("13");
agePickerDataModel.Items.Add("14");
agePickerDataModel.Items.Add("15");
agePickerDataModel.Items.Add("16");
agePickerDataModel.Items.Add("17");
agePicker.Source = agePickerDataModel;
agePicker.UserInteractionEnabled = true;
agePicker.ShowSelectionIndicator = true;
// add our controls to the action sheet
//actionSheet.AddSubview (datePicker);
actionSheet.AddSubview(AgePicker);
actionSheet.AddSubview (titleLabel);
actionSheet.AddSubview (doneButton);
}
#endregion
#region -= public methods =-
/// <summary>
/// Shows the action sheet picker from the view that was set as the owner.
/// </summary>
public void Show()
{
// declare vars
float titleBarHeight = 40;
SizeF doneButtonSize = new SizeF (71, 30);
SizeF actionSheetSize = new SizeF(owner.Frame.Width, agePicker.Frame.Height + titleBarHeight);
RectangleF actionSheetFrame = new RectangleF (0, owner.Frame.Height - actionSheetSize.Height
, actionSheetSize.Width, actionSheetSize.Height);
// show the action sheet and add the controls to it
actionSheet.ShowInView (owner);
// resize the action sheet to fit our other stuff
actionSheet.Frame = actionSheetFrame;
// move our picker to be at the bottom of the actionsheet (view coords are relative to the action sheet)
agePicker.Frame = new RectangleF(agePicker.Frame.X, titleBarHeight, agePicker.Frame.Width, agePicker.Frame.Height);
// move our label to the top of the action sheet
titleLabel.Frame = new RectangleF (10, 4, owner.Frame.Width - 100, 35);
// move our button
doneButton.Frame = new RectangleF (actionSheetSize.Width - doneButtonSize.Width - 10, 7, doneButtonSize.Width, doneButtonSize.Height);
}
/// <summary>
/// Dismisses the action sheet date picker
/// </summary>
public void Hide (bool animated)
{
actionSheet.DismissWithClickedButtonIndex (0, animated);
}
#endregion
}
}
現在我的視圖控制器上我試圖讓該項目選擇像這樣，但它不起作用，因爲我沒有ValueChanged方法。
actionSheetChildAgePicker.AgePicker.ValueChanged += (s, e) => {
this.txtAge1Room1 = f.ToString ((s as UIPickerView).Select(1,0,true));
};
任何幫助將不勝感激。提前致謝。