Can I simplify this iOS rendering now that I no longer need to explicitly subscribe to the-change-event property

Question

I use this custom renderer:

public class ExtViewCellRenderer : ViewCellRenderer
{
    UITableViewCell _nativeCell;

    public override UITableViewCell GetCell(Cell item, UITableViewCell reusableCell, UITableView tv)
    {
        _nativeCell = base.GetCell(item, reusableCell, tv);
        var formsCell = item as ExtViewCell;

        if (formsCell != null)
        {
            formsCell.PropertyChanged -= OnPropertyChanged;
            formsCell.PropertyChanged += OnPropertyChanged;
        }
        SetTap(formsCell);

        return _nativeCell;
    }

    void OnPropertyChanged(object sender, PropertyChangedEventArgs e)
    {
        var formsCell = sender as ExtViewCell;
        if (formsCell == null)
            return;

        if (e.PropertyName == ExtViewCell.NoTapProperty.PropertyName)
        {
            SetTap(formsCell);
        }
    }

    private void SetTap(ExtViewCell formsCell)
    {
        if (formsCell.NoTap)
            _nativeCell.SelectionStyle = UITableViewCellSelectionStyle.None;
        else
            _nativeCell.SelectionStyle = UITableViewCellSelectionStyle.Default;
    }

}

I read that with it is TextCellRendererno longer necessary to explicitly subscribe to the-changed-event property, since there is a basic overridable method HandlePropertyChangedthat can be reused in this context.

Can someone tell me if this is the case for ViewCellRenderer, and if so, how can I change this code to use this?

I also saw this code in another renderer:

public override UITableViewCell GetCell(Cell item, UITableViewCell reusableCell, UITableView tv)
{
    var textCell = (TextCell)item;
    var fullName = item.GetType().FullName;
    cell = tv.DequeueReusableCell(fullName) as CellTableViewCell;

    //...

But not here. Is there any need to do this Cell = tv.DequeueReusableCell?

Answer 1

, TextCellRenderer -changed-event, HandlePropertyChanged, .

,

protected virtual void HandlePropertyChanged(object sender, PropertyChangedEventArgs args) {
    //...
}

TextCellRenderer

- , ViewCellRenderer, , , ?

, ViewCellRenderer, ViewCellRenderer ViewCellPropertyChanged private

void ViewCellPropertyChanged(object sender, PropertyChangedEventArgs e) {
    //...
}

ViewCellRenderer

, .