protected override void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
_disposed = true;
if (disposing)
{
_shellContext.Shell.PropertyChanged -= OnShellPropertyChanged;
if (_flyoutHeader != null)
{
_flyoutHeader.MeasureInvalidated -= OnFlyoutHeaderMeasureInvalidated;
}
if (_appBar != null)
{
_appBar.RemoveOnOffsetChangedListener(this);
_appBar.RemoveView(_headerView);
}
if (_recycler != null)
{
_recycler.SetLayoutManager(null);
_recycler.SetAdapter(null);
_recycler.Dispose();
}
_adapter?.Dispose();
_headerView.Dispose();
_rootView.Dispose();
_layoutManager?.Dispose();
_defaultBackgroundColor?.Dispose();
_bgImage?.Dispose();
_flyoutHeader = null;
_rootView = null;
_headerView = null;
_shellContext = null;
_appBar = null;
_recycler = null;
_adapter = null;
_defaultBackgroundColor = null;
_layoutManager = null;
_bgImage = null;
}
base.Dispose(disposing);
}
protected virtual void LoadView(IShellContext shellContext)
{
Profile.FrameBegin();
var context = shellContext.AndroidContext;
// Android designer can't load fragments or resources from layouts
if (context.IsDesignerContext())
{
_rootView = new FrameLayout(context);
return;
}
var coordinator = LayoutInflater.FromContext(context).Inflate(Resource.Layout.FlyoutContent, null);
Profile.FramePartition("Find Recycler");
_recycler = coordinator.FindViewById <RecyclerView>(Resource.Id.flyoutcontent_recycler);
Profile.FramePartition("Find AppBar");
_appBar = coordinator.FindViewById <AppBarLayout>(Resource.Id.flyoutcontent_appbar);
_rootView = coordinator as ViewGroup;
Profile.FramePartition("Add Listener");
_appBar.AddOnOffsetChangedListener(this);
Profile.FramePartition("Add HeaderView");
_actionBarHeight = (int)context.ToPixels(56);
UpdateFlyoutHeader();
Profile.FramePartition("Recycler.SetAdapter");
_adapter = new ShellFlyoutRecyclerAdapter(shellContext, OnElementSelected);
_recycler.SetClipToPadding(false);
_recycler.SetLayoutManager(_layoutManager = new ScrollLayoutManager(context, (int)Orientation.Vertical, false));
_recycler.SetLayoutManager(new LinearLayoutManager(context, (int)Orientation.Vertical, false));
_recycler.SetAdapter(_adapter);
Profile.FramePartition("Initialize BgImage");
var metrics = context.Resources.DisplayMetrics;
var width = Math.Min(metrics.WidthPixels, metrics.HeightPixels);
using (TypedValue tv = new TypedValue())
{
if (context.Theme.ResolveAttribute(global::Android.Resource.Attribute.ActionBarSize, tv, true))
{
_actionBarHeight = TypedValue.ComplexToDimensionPixelSize(tv.Data, metrics);
}
}
width -= _actionBarHeight;
coordinator.LayoutParameters = new LP(width, LP.MatchParent);
_bgImage = new ImageView(context)
{
LayoutParameters = new LP(coordinator.LayoutParameters)
};
Profile.FramePartition("UpdateFlyoutHeaderBehavior");
UpdateFlyoutHeaderBehavior();
_shellContext.Shell.PropertyChanged += OnShellPropertyChanged;
Profile.FramePartition("UpdateFlyoutBackground");
UpdateFlyoutBackground();
Profile.FramePartition(nameof(UpdateVerticalScrollMode));
UpdateVerticalScrollMode();
Profile.FrameEnd();
}