protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);

            // Set our view from the "main" layout resource
            SetContentView(Resource.Layout.Menu);

            _title = _drawerTitle = Title;
            _menuTitles = Resources.GetStringArray(Resource.Array.MenuArray);
            _drawer = FindViewById<DrawerLayout>(Resource.Id.drawer_layout);
            _drawerList = FindViewById<ListView>(Resource.Id.left_drawer);

            _drawer.SetDrawerShadow(Resource.Drawable.drawer_shadow_dark, (int)GravityFlags.Start);

            _drawerList.Adapter = new ArrayAdapter<string>(this,
                Resource.Layout.drawer_item, _menuTitles);
            _drawerList.ItemClick += (sender, args) => SelectItem(args.Position);

            ActionBar.SetDisplayHomeAsUpEnabled(true);
            ActionBar.SetHomeButtonEnabled(true);
            ActionBar.SetIcon(new ColorDrawable(Resources.GetColor(Android.Resource.Color.Transparent)));

            //DrawerToggle is the animation that happens with the indicator next to the
            //ActionBar icon. You can choose not to use this.
            _drawerToggle = new MyActionBarDrawerToggle(this, _drawer,
                Resource.Drawable.ic_drawer_light,
                Resource.String.DrawerOpen,
                Resource.String.DrawerClose);

            //You can alternatively use _drawer.DrawerClosed here
            _drawerToggle.DrawerClosed += delegate
            {
                ActionBar.Title = _title;
                ActionBar.SetIcon(new ColorDrawable(Resources.GetColor(Android.Resource.Color.Transparent)));
                InvalidateOptionsMenu();
            };

            //You can alternatively use _drawer.DrawerOpened here
            _drawerToggle.DrawerOpened += delegate
            {
                ActionBar.Title = _drawerTitle;
                InvalidateOptionsMenu();
            };

            _drawer.SetDrawerListener(_drawerToggle);

            if (null == savedInstanceState)
                SelectItem(0);
        }
		protected override void OnCreate(Bundle savedInstanceState)
		{
			base.OnCreate(savedInstanceState);

			// Set our view from the "main" layout resource
			SetContentView(Resource.Layout.Menu);
		
			Intent t = this.Intent;

				bool firstload=t.GetBooleanExtra("FirstLoad",false);
			
			if (firstload == true) {
				
			}

			User sv = BUser.GetMainUser (SQLite_Android.GetConnection ());
			_title = _drawerTitle = Title;
			_menuTitles = Resources.GetStringArray(Resource.Array.MenuArray);
			_drawer = FindViewById<DrawerLayout>(Resource.Id.drawer_layout);
			_drawerList = FindViewById<ListView>(Resource.Id.left_drawer);

			_drawer.SetDrawerShadow(Resource.Drawable.drawer_shadow_dark, (int)GravityFlags.Start);
			View header = this.LayoutInflater.Inflate (Resource.Layout.DrawerHeader, null);
			header.FindViewById<TextView> (Resource.Id.txtTenSV).Text=sv.Hoten;
			header.FindViewById<TextView> (Resource.Id.txtmasv).Text=sv.Id;
			_drawerList.AddHeaderView (header);
			List<DrawerItem> listItems = new List<DrawerItem> ();
		//	listItems.Add(new DrawerItem(namesv,Resource.Drawable.user,true));
			listItems.Add(new DrawerItem("Lịch Học",0,false,true));
			listItems.Add(new DrawerItem("Theo Học Kỳ",Resource.Drawable.Iclichhoc,true,false));
			listItems.Add(new DrawerItem("Theo Tuần",Resource.Drawable.calendar,false,false));

			listItems.Add(new DrawerItem("Điểm Thi",0,false,true));
			listItems.Add(new DrawerItem("Theo Học Kỳ",Resource.Drawable.Icdiemthi,true,false));
			listItems.Add(new DrawerItem("Tất Cả",Resource.Drawable.IcAdiemthi,false,false));

			listItems.Add(new DrawerItem("Học Phí-Lịch Thi",0,false,true));
			listItems.Add(new DrawerItem("Lịch Thi",Resource.Drawable.Iclichthi,true,false));
			listItems.Add(new DrawerItem("Học Phí",Resource.Drawable.Ichocphi,false,false));

			listItems.Add(new DrawerItem("Ứng Dụng",0,false,true));
			listItems.Add(new DrawerItem("Cài đặt",Resource.Drawable.Icsettings,true,false));

			listItems.Add (new DrawerItem ("Đăng xuất", Resource.Drawable.signout,false,false));
			_drawerList.Adapter = new CustomDrawerAdapter (this, listItems);
			_drawerList.ItemClick += (sender, args) => SelectItem(args.Position);


			ActionBar.SetDisplayHomeAsUpEnabled(true);
			ActionBar.SetHomeButtonEnabled(true);
			ActionBar.SetIcon(new ColorDrawable(Resources.GetColor(Android.Resource.Color.Transparent)));

			//DrawerToggle is the animation that happens with the indicator next to the
			//ActionBar icon. You can choose not to use this.
			_drawerToggle = new MyActionBarDrawerToggle(this, _drawer,
				Resource.Drawable.ic_menu_white_18dp,
				Resource.String.DrawerOpen,
				Resource.String.DrawerClose);

			//You can alternatively use _drawer.DrawerClosed here
			_drawerToggle.DrawerClosed += delegate
			{
				ActionBar.Title = _title;
				ActionBar.SetIcon(new ColorDrawable(Resources.GetColor(Android.Resource.Color.Transparent)));
				InvalidateOptionsMenu();
			};

			//You can alternatively use _drawer.DrawerOpened here
			_drawerToggle.DrawerOpened += delegate
			{
				ActionBar.Title = _drawerTitle;
				InvalidateOptionsMenu();
			};

			_drawer.SetDrawerListener(_drawerToggle);

			this.ActionBar.SetDisplayHomeAsUpEnabled(true);
			this.ActionBar.SetHomeButtonEnabled(true);
			if (null == savedInstanceState) {
				SelectItem (2);
				previousItemChecked = 2;
			}

		}