Question

我看到使用MVVMCross对模板进行数据绑定的精彩示例。但是，我有复杂的数据源，可以根据当前正在加载的集合中的项目属性在GetCell（ios和Android）中设置单元格UI类型：

        public override UITableViewCell GetCell (UITableView tableView, MonoTouch.Foundation.NSIndexPath indexPath)
    {
        UITableViewCell cell = null;
        var item = cellItems [indexPath.Section] [indexPath.Row];
        switch (item.DisplayType) {
        case DetailType.Name:
            cell = tableView.DequeueReusableCell (cellIdentifier + "_name")as NameEditCell;
            if (cell == null) {
                cell = NameEditCell.Create ();
            }
            ((NameEditCell)cell).BindFields (item);
            break;
        case DetailType.Phone:
            cell = tableView.DequeueReusableCell (cellIdentifier + "_phone")as PhoneEditCell;
            if (cell == null) {
                cell = PhoneEditCell.Create ();

            }
            ((PhoneEditCell)cell).BindFields (item);
            break;
        case DetailType.Email:
            cell = tableView.DequeueReusableCell (cellIdentifier + "_email")as EmailEditCell;
            if (cell == null) {
                cell = EmailEditCell.Create ();

            }
            ((EmailEditCell)cell).BindFields (item);
            break;
        case DetailType.Property:
            cell = tableView.DequeueReusableCell (cellIdentifier + "_property")as PropertyEditCell;
            if (cell == null)
                cell = PropertyEditCell.Create ();
            ((PropertyEditCell)cell).BindFields (item);
            break;
        case DetailType.Address:
            cell = tableView.DequeueReusableCell (cellIdentifier + "_address")as AddressEditCell;
            if (cell == null) {
                cell = AddressEditCell.Create ();
            }
            ((AddressEditCell)cell).BindFields (item);
            break;
        }

        return cell;
    }
}

如何通过绑定或使用模板在MVVMCross中完成此操作，如发布的示例中所述，说明了绑定到带模板的列表？

Answer 1

Android，iOS和Windwos Phone中的多态列表视图显示在https://github.com/MvvmCross/MvvmCross-Samples/tree/master/WorkingWithCollections

中

在iOS中，此示例使用自定义数据源，该数据源根据单个项目切换标识符：

        protected override UITableViewCell GetOrCreateCellFor(UITableView tableView, NSIndexPath indexPath,
                                                              object item)
        {
            NSString cellIdentifier;
            if (item is Kitten)
            {
                cellIdentifier = KittenCellIdentifier;
            }
            else if (item is Dog)
            {
                cellIdentifier = DogCellIdentifier;
            }
            else
            {
                throw new ArgumentException("Unknown animal of type " + item.GetType().Name);
            }

            return (UITableViewCell) TableView.DequeueReusableCell(cellIdentifier, indexPath);
        }

https://github.com/MvvmCross/MvvmCross-Samples/blob/master/WorkingWithCollections/Collections.iOS/Views/Samples/PolymorphicListItemTypesView.cs

基于Item属性的MVVMCross自定义单元格绑定

1 个答案: