public void OnClick(Android.Views.View v)
{
Picker model = Element;
var picker = new NumberPicker(Context);
if (model.Items != null && model.Items.Any())
{
picker.MaxValue = model.Items.Count - 1;
picker.MinValue = 0;
picker.SetDisplayedValues(model.Items.ToArray());
picker.WrapSelectorWheel = false;
picker.DescendantFocusability = Android.Views.DescendantFocusability.BlockDescendants;
picker.Value = model.SelectedIndex;
}
var layout = new LinearLayout(Context)
{
Orientation = Orientation.Vertical
};
layout.AddView(picker);
EController.SetValueFromRenderer(VisualElement.IsFocusedPropertyKey, true);
var builder = new AlertDialog.Builder(Context);
builder.SetView(layout);
builder.SetTitle(model.Title ?? "");
builder.SetNegativeButton(blankPicker.CancelButtonText ?? "Cancel", (s, a) =>
{
blankPicker.SendCancelClicked();
EController.SetValueFromRenderer(VisualElement.IsFocusedPropertyKey, false);
_dialog = null;
});
builder.SetPositiveButton(blankPicker.DoneButtonText ?? "OK", (s, a) =>
{
EController.SetValueFromRenderer(Picker.SelectedIndexProperty, picker.Value);
//blankPicker.SelectedItem = picker.Value;
blankPicker.SendDoneClicked();
// It is possible for the Content of the Page to be changed on SelectedIndexChanged.
// In this case, the Element & Control will no longer exist.
if (Element != null)
{
if (model.Items.Count > 0 && Element.SelectedIndex >= 0)
{
Control.Text = model.Items[Element.SelectedIndex];
}
EController.SetValueFromRenderer(VisualElement.IsFocusedPropertyKey, false);
}
_dialog = null;
});
_dialog = builder.Create();
_dialog.DismissEvent += (sender, args) =>
{
EController?.SetValueFromRenderer(VisualElement.IsFocusedPropertyKey, false);
};
_dialog.Show();
}
public void SetUIButtons()
{
if (string.IsNullOrEmpty(blankPicker.DoneButtonText) && string.IsNullOrEmpty(blankPicker.CancelButtonText))
{
Control.InputAccessoryView = null;
return;
}
UIToolbar toolbar = new UIToolbar
{
BarStyle = UIBarStyle.Default,
Translucent = true
};
toolbar.SizeToFit();
var items = new List <UIBarButtonItem>();
if (!string.IsNullOrEmpty(blankPicker.CancelButtonText))
{
UIBarButtonItem cancelButton = new UIBarButtonItem(blankPicker.CancelButtonText, UIBarButtonItemStyle.Done, (s, ev) =>
{
Control.ResignFirstResponder();
});
cancelButton.Clicked += (sender, e) => { blankPicker.SendCancelClicked(); };
items.Add(cancelButton);
}
UIBarButtonItem flexible = new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace);
items.Add(flexible);
if (!string.IsNullOrEmpty(blankPicker.DoneButtonText))
{
UIBarButtonItem doneButton = new UIBarButtonItem(blankPicker.DoneButtonText, UIBarButtonItemStyle.Done, (s, ev) =>
{
Control.ResignFirstResponder();
});
doneButton.Clicked += (sender, e) => { blankPicker.SendDoneClicked(); };
items.Add(doneButton);
}
toolbar.SetItems(items.ToArray(), true);
Control.InputAccessoryView = toolbar;
}