protected virtual void UpdateFlyoutHeader()
{
if (_headerView != null)
{
var oldHeaderView = _headerView;
_headerView = null;
_appBar.RemoveView(oldHeaderView);
oldHeaderView.Dispose();
}
if (_flyoutHeader != null)
{
_flyoutHeader.MeasureInvalidated -= OnFlyoutHeaderMeasureInvalidated;
}
_flyoutHeader = ((IShellController)_shellContext.Shell).FlyoutHeader;
if (_flyoutHeader != null)
{
_flyoutHeader.MeasureInvalidated += OnFlyoutHeaderMeasureInvalidated;
}
_headerView = new HeaderContainer(_shellContext.AndroidContext, _flyoutHeader)
{
MatchWidth = true
};
_headerView.SetMinimumHeight(_actionBarHeight);
_headerView.LayoutParameters = new AppBarLayout.LayoutParams(LP.MatchParent, LP.WrapContent)
{
ScrollFlags = AppBarLayout.LayoutParams.ScrollFlagScroll
};
_appBar.AddView(_headerView);
UpdateFlyoutHeaderBehavior();
UpdateContentLayout();
}
protected virtual void LoadView(IShellContext shellContext)
{
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);
var recycler = coordinator.FindViewById <RecyclerView>(Resource.Id.flyoutcontent_recycler);
var appBar = coordinator.FindViewById <AppBarLayout>(Resource.Id.flyoutcontent_appbar);
_rootView = coordinator;
appBar.AddOnOffsetChangedListener(this);
int actionBarHeight = (int)context.ToPixels(56);
_headerView = new HeaderContainer(context, ((IShellController)shellContext.Shell).FlyoutHeader)
{
MatchWidth = true
};
_headerView.SetMinimumHeight(actionBarHeight);
_headerView.LayoutParameters = new AppBarLayout.LayoutParams(LP.MatchParent, LP.WrapContent)
{
ScrollFlags = AppBarLayout.LayoutParams.ScrollFlagScroll
};
appBar.AddView(_headerView);
var adapter = new ShellFlyoutRecyclerAdapter(shellContext, OnElementSelected);
recycler.SetPadding(0, (int)context.ToPixels(20), 0, 0);
recycler.SetClipToPadding(false);
recycler.SetLayoutManager(new LinearLayoutManager(context, (int)Orientation.Vertical, false));
recycler.SetAdapter(adapter);
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);
UpdateFlyoutHeaderBehavior();
_shellContext.Shell.PropertyChanged += OnShellPropertyChanged;
UpdateFlyoutBackgroundColor();
}
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");
var recycler = coordinator.FindViewById <RecyclerView>(Resource.Id.flyoutcontent_recycler);
Profile.FramePartition("Find AppBar");
var 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);
_flyoutHeader = ((IShellController)shellContext.Shell).FlyoutHeader;
if (_flyoutHeader != null)
{
_flyoutHeader.MeasureInvalidated += OnFlyoutHeaderMeasureInvalidated;
}
_headerView = new HeaderContainer(context, _flyoutHeader)
{
MatchWidth = true
};
_headerView.SetMinimumHeight(_actionBarHeight);
_headerView.LayoutParameters = new AppBarLayout.LayoutParams(LP.MatchParent, LP.WrapContent)
{
ScrollFlags = AppBarLayout.LayoutParams.ScrollFlagScroll
};
appBar.AddView(_headerView);
Profile.FramePartition("Recycler.SetAdapter");
var adapter = new ShellFlyoutRecyclerAdapter(shellContext, OnElementSelected);
recycler.SetClipToPadding(false);
recycler.SetLayoutManager(_layoutManager = new ScrollLayoutManager(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.FrameEnd();
Profile.FramePartition(nameof(UpdateVerticalScrollMode));
UpdateVerticalScrollMode();
Profile.FrameEnd();
}
