public override Widget build(BuildContext context)
{
BottomNavigationBar botNavBar = new BottomNavigationBar(
items: this._navigationViews
.Select <NavigationIconView, BottomNavigationBarItem>((NavigationIconView navigationView) =>
navigationView.item)
.ToList(),
currentIndex: this._currentIndex,
type: this._type,
onTap: (int index) =>
{
this.setState(() =>
{
this._navigationViews[this._currentIndex].controller.reverse();
this._currentIndex = index;
this._navigationViews[this._currentIndex].controller.forward();
});
}
);
return(new Scaffold(
appBar: new AppBar(
title: new Text("Bottom navigation"),
actions: new List <Widget>
{
new MaterialDemoDocumentationButton(BottomNavigationDemo.routeName),
new PopupMenuButton <BottomNavigationBarType>(
onSelected: (BottomNavigationBarType value) =>
{
this.setState(() => { this._type = value; });
},
itemBuilder: (BuildContext subContext) => new List <PopupMenuEntry <BottomNavigationBarType> >
{
new PopupMenuItem <BottomNavigationBarType>(
value: BottomNavigationBarType.fix,
child: new Text("Fixed")
),
new PopupMenuItem <BottomNavigationBarType>(
value: BottomNavigationBarType.shifting,
child: new Text("Shifting")
)
}
)
}
),
body: new Center(
child: this._buildTransitionsStack()
),
bottomNavigationBar: botNavBar
));
}
private void handleDirection(CoordinatorLayout parent, V child, ScrollDirection scrollDirection)
{
BottomNavigationBar bottomNavigationBar = (BottomNavigationBar)mViewRef.Get();
if (bottomNavigationBar != null && bottomNavigationBar.AutoHideEnabled)
{
if (scrollDirection == ScrollDirection.SCROLL_DIRECTION_DOWN && bottomNavigationBar.Hidden)
{
updateSnackBarPosition(parent, child, getSnackBarInstance(parent, child), -mBottomNavHeight);
bottomNavigationBar.show();
}
else if (scrollDirection == ScrollDirection.SCROLL_DIRECTION_UP && !bottomNavigationBar.Hidden)
{
updateSnackBarPosition(parent, child, getSnackBarInstance(parent, child), 0);
bottomNavigationBar.hide();
}
}
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.activity_use_in_fragment);
_vpHome = FindViewById <ViewPager>(Resource.Id.vp_home);
_bottomNavigationBar = FindViewById <BottomNavigationBar>(Resource.Id.bottom_navigation_bar);
_bottomNavigationBar.AddItem(new BottomNavigationItem(Resource.Drawable.ic_favorite, "One"))
.AddItem(new BottomNavigationItem(Resource.Drawable.ic_gavel, "Two"))
.AddItem(new BottomNavigationItem(Resource.Drawable.ic_grade, "Three"))
.AddItem(new BottomNavigationItem(Resource.Drawable.ic_group_work, "Four"))
.Initialise();
_bottomNavigationBar.SetTabSelectedListener(new TabSelectedListener(_vpHome));
_fragmentList.Add(new ImageFragment());
_fragmentList.Add(new SimpleFragment());
_fragmentList.Add(new SimpleFragment());
_fragmentList.Add(new SimpleFragment());
_vpHome.PageSelected += (s, e) =>
{
_bottomNavigationBar.SelectTab(e.Position);
switch (e.Position)
{
case 0:
break;
default:
var random = new Random();
var color = (int)(0xff000000 | random.Next(0xffffff));
if (_fragmentList[e.Position] is SimpleFragment)
{
((SimpleFragment)_fragmentList[e.Position]).SetTvTitleBackgroundColor(color);
}
break;
}
};
_vpHome.Adapter = new FragmentAdapter(SupportFragmentManager, _fragmentList);
}