Windows8开发5-Windows 8 App AppBar

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1、TravelJourney-AppBar1.1添加AppBar这里，我们选择在ItemDetailsPage页面添加AppBar,代码如下：

2、Name="RightPanel"Orientation="Horizontal"Grid.Column="1"HorizontalAlignment="Right">1.2实现AppBar上的按钮(PINtoStart)在ItemDetailsPage的后台文件中添加代码：voidInit(){pinToAppBar.Click+=pinToAppBar

3、_Click;pageRoot.BottomAppBar.Opened+=BottomAppBar_Opened;}voidBottomAppBar_Opened(objectsender,objecte){ToggleAppBarButton(!SecondaryTile.Exists(((SampleDataItem)this.flipView.SelectedItem).UniqueId));}RectGetElementRect(FrameworkElementelement){FrameworkEl

4、ementsender=(FrameworkElement)pinToAppBar;Windows.UI.Xaml.Media.GeneralTransformbuttonTransform=sender.TransformToVisual(null);Windows.Foundation.Pointpoint=buttonTransform.TransformPoint(newPoint());Windows.Foundation.Rectrect=newRect(point,newSize(element

5、.ActualWidth,element.ActualHeight));returnrect;}asyncvoidpinToAppBar_Click(objectsender,RoutedEventArgse){varitem=(SampleDataItem)this.flipView.SelectedItem;varuri=newUri(item.TileImagePath.AbsoluteUri);if(SecondaryTile.Exists(item.UniqueId)){SecondaryTiles

6、econdaryTile=newSecondaryTile(item.UniqueId);boolisUnpinned=awaitsecondaryTile.RequestDeleteForSelectionAsync(GetElementRect((FrameworkElement)sender),Windows.UI.Popups.Placement.Above);ToggleAppBarButton(isUnpinned);}else{SecondaryTilesecondaryTile=newSeco

7、ndaryTile(item.UniqueId,item.UniqueId,item.UniqueId,item.UniqueId,TileOptions.None,uri);boolisPinned=awaitsecondaryTile.RequestCreateForSelectionAsync(GetElementRect((FrameworkElement)sender),Windows.UI.Popups.Placement.Above);ToggleAppBarButton(!isPinned);

8、}pageRoot.BottomAppBar.IsOpen=false;}privatevoidToggleAppBarButton(boolshowPinButton){if(pinToAppBar!=null)pinToAppBar.Style=(showPinButton)?(Application.Current.Resources["PinAppBarButtonStyle"]asStyl