Question

我在另一个页面中显示一个列表，当点击一个列表项时，控件转移到另一个页面，在那里我点击了数据。

我可以使用pin appbar按钮将一个事件的辅助磁贴固定为启动面板。

显示页面已固定。

现在，我想为每个点击的列表视图项目添加新的图块。

我可以在列表中获取所选项目的ID。

那么是否有可能检查每个id，pinbar是否被激活..？

这里是我写的代码： -

     private void ToggleAppBarButton(bool showPinButton)
    {
        if (showPinButton)
        {
            this.PinUnPinCommandButton.Label = "Pin to start";
            this.PinUnPinCommandButton.Icon = new SymbolIcon(Symbol.Pin);
        }
        else
        {
            this.PinUnPinCommandButton.Label = "Unpin from start";
            this.PinUnPinCommandButton.Icon = new SymbolIcon(Symbol.UnPin);
        }

        this.PinUnPinCommandButton.UpdateLayout();
    }


    void Init()
    {
        ToggleAppBarButton(!SecondaryTile.Exists(EditWindow.appbarTileId));
        this.PinUnPinCommandButton.Click += this.pinToAppBar_Click;
    }

    async void pinToAppBar_Click(object sender, RoutedEventArgs e)
    {
        this.SecondTileCommmandbar.IsSticky = true;

        if (SecondaryTile.Exists(EditWindow.appbarTileId))
        {
            SecondaryTile secondarytile = new SecondaryTile(EditWindow.appbarTileId);


            bool ispinned = await secondarytile.RequestDeleteForSelectionAsync(EditWindow.GetElementRect((FrameworkElement)sender), Windows.UI.Popups.Placement.Above);
            ToggleAppBarButton(ispinned);

        }
        else
        {
            Uri square150x150Logo = new Uri("ms-appx:///Assets/SmallScreen.scale-140.png");
            string tileActivationArguments = EditWindow.appbarTileId + " WasPinnedAt=" + DateTime.Now.ToLocalTime().ToString();

            string displayName = daysleft.Events = event_text.Text;

            SecondaryTile secondaryTile = new SecondaryTile(EditWindow.appbarTileId, 
                                                            displayName, 
                                                            tileActivationArguments,
                                                            new Uri("ms-appx:///Assets/Square71x71Logo.scale-140.png"), TileSize.Square150x150);
            secondaryTile.VisualElements.ShowNameOnSquare150x150Logo = true;

            await secondaryTile.RequestCreateAsync();

        }
        this.BottomAppBar.IsSticky = false;
    }

    void BottomAppBar_Opened(object sender, object e)
    {
        ToggleAppBarButton(!SecondaryTile.Exists(EditWindow.appbarTileId));
    }

    private static Rect GetElementRect(FrameworkElement frameworkElement)
    {
        GeneralTransform buttonTransform = frameworkElement.TransformToVisual(null);

        Point point = buttonTransform.TransformPoint(new Point());

        return new Rect(point, new Size(frameworkElement.ActualWidth, frameworkElement.ActualHeight));
             }

    private void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
    {

    }

    protected override void OnNavigatedTo(NavigationEventArgs e)
    {
        //accesing clicked listview item from different page 
        Selected_DaysId = Int32.Parse(e.Parameter.ToString());
        Debug.WriteLine("Selected_DaysId "+Selected_DaysId);
       //Method to initialize the pin appbar
        Init();
    }

    protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)
    {
        base.OnNavigatingFrom(e);
        if (e.NavigationMode == NavigationMode.Back)
        {
            ResetPageCache();
        }
    }

    private void ResetPageCache()
    {
        var cacheSize = ((Frame)Parent).CacheSize;
        ((Frame)Parent).CacheSize = 0;
        ((Frame)Parent).CacheSize = cacheSize;
    }

Answer 1

根据我的理解，您希望查找特定ID是否已固定。

bool isPinned = await secondaryTile.RequestCreateAsync();

如果已固定磁贴，则返回false值，您可以使用最初创建它的相同ID创建新的辅助磁贴，并检查ispinned值是true还是false。通过这种方式，您将知道您的瓷砖是否固定。

修改讨论后的代码解决方案

if (SecondaryTile.Exists(Selected_DaysId.ToString())) { var secondaryTile = new SecondaryTile( Selected_DaysId.ToString(), "Text shown on tile", "secondTileArguments", new Uri("ms-appx:///Assets/image.jpg", UriKind.Absolute), TileSize.Square150x150); bool isPinned1 = await secondaryTile.RequestDeleteAsync(); }

如何为windows phone 8.1中的每个listview点击项目固定辅助磁贴

1 个答案: