如何处理Windows Phone中所选枢轴项的事件

Question

我有一个3 PivotItem秒的应用程序和一个ApplicationBar.我想隐藏ApplicationBar在PivotItem第2和第3选择,并显示ApplicationBar首当PivotItem选择.

Answer 1

我不知道为什么这个问题被投了票.问题意义可能是错误的,可以编辑.我为你找到了解决方案@ user3847141.干得好.

PivotItem pivot = null;
    private void Pivot_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        ApplicationBar appBar = new ApplicationBar();
        ApplicationBarIconButton appBarIconButton = new ApplicationBarIconButton();
        pivot = (PivotItem)(sender as Pivot).SelectedItem;
        switch(pivot.Header.ToString())
        {
            case "item1": 
                appBar.Mode = ApplicationBarMode.Default;
                appBarIconButton.IconUri = new Uri("/appbar.close.png", UriKind.RelativeOrAbsolute);
                appBarIconButton.Text = "Close";
                appBar.Buttons.Add(appBarIconButton);
                this.ApplicationBar = appBar;
                break;
            case "item2":
                appBar.Mode = ApplicationBarMode.Minimized; // To minimize AppBar
                appBar = null; // Delete Application Bar                     
                this.ApplicationBar = appBar;
                break;
            case "item3":
                appBar.Mode = ApplicationBarMode.Minimized;
                appBar = null;                   
                this.ApplicationBar = appBar;
                break;
        }
    }

您可以通过Pivot中的Selection_Changed事件来实现此目的.希望能帮助到你.