protected override void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
_disposed = true;
if (disposing)
{
Controller.ScrollToRequested -= OnScrollToRequested;
if (_headerRenderer != null)
{
Platform.ClearRenderer(_headerRenderer.View);
_headerRenderer.Dispose();
_headerRenderer = null;
}
_headerView?.Dispose();
_headerView = null;
if (_footerRenderer != null)
{
Platform.ClearRenderer(_footerRenderer.View);
_footerRenderer.Dispose();
_footerRenderer = null;
}
_footerView?.Dispose();
_footerView = null;
if (Control != null)
{
// Unhook the adapter from the ListView before disposing of it
Control.Adapter = null;
Control.SetOnScrollListener(null);
}
if (_adapter != null)
{
_adapter.Dispose();
_adapter = null;
}
}
base.Dispose(disposing);
}
protected override void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
_disposed = true;
if (disposing)
{
if (_headerRenderer != null)
{
Platform.ClearRenderer(_headerRenderer.View);
_headerRenderer.Dispose();
_headerRenderer = null;
}
_headerView?.Dispose();
_headerView = null;
if (_footerRenderer != null)
{
Platform.ClearRenderer(_footerRenderer.View);
_footerRenderer.Dispose();
_footerRenderer = null;
}
_footerView?.Dispose();
_footerView = null;
if (_adapter != null)
{
_adapter.Dispose();
_adapter = null;
}
Controller.ScrollToRequested -= OnScrollToRequested;
}
base.Dispose(disposing);
}
void UpdateHeader()
{
var header = (VisualElement)Controller.HeaderElement;
if (_headerRenderer != null)
{
var reflectableType = _headerRenderer as System.Reflection.IReflectableType;
var rendererType = reflectableType != null?reflectableType.GetTypeInfo().AsType() : _headerRenderer.GetType();
if (header == null || Registrar.Registered.GetHandlerTypeForObject(header) != rendererType)
{
if (_headerView != null)
{
_headerView.Child = null;
}
Platform.ClearRenderer(_headerRenderer.View);
_headerRenderer.Dispose();
_headerRenderer = null;
}
}
if (header == null)
{
return;
}
if (_headerRenderer != null)
{
_headerRenderer.SetElement(header);
}
else
{
_headerRenderer = Platform.CreateRenderer(header, Context);
if (_headerView != null)
{
_headerView.Child = _headerRenderer;
}
}
Platform.SetRenderer(header, _headerRenderer);
}
