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 = (ViewGroup)LayoutInflater.FromContext(context).Inflate(Resource.Layout.flyoutcontent, null); 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(); UpdateFlyoutContent(); 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.FramePartition("FlyoutFooter"); UpdateFlyoutFooter(); Profile.FrameEnd(); if (View is ShellFlyoutLayout sfl) { sfl.LayoutChanging += OnFlyoutViewLayoutChanged; } }
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); _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"); _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.FrameEnd(); Profile.FramePartition(nameof(UpdateVerticalScrollMode)); UpdateVerticalScrollMode(); Profile.FrameEnd(); }
/// <summary> /// Android4.4ÉÏCollapsingToolbarÕÛµþʱstatusBarÏÔʾºÍÒþ²Ø /// </summary> /// <param name="appBarLayout"></param> private static void SetCollapsingToolbarStatus(AppBarLayout appBarLayout) { ViewCompat.SetAlpha(statusBarView, 1); appBarLayout.AddOnOffsetChangedListener(new AppBarLayoutOffsetChanged()); }