我正在按照https://developer.microsoft.com/en-us/windows/uwp-community-toolkit/controls/hamburgermenu中的示例和文档来规划控件。我从页面底部复制了代码以试用导航功能。文件建议
如果要启用从汉堡菜单导航到特定页面,我们建议在 HamburgerMenu 控件的 Xaml 内容中声明一个 Frame。
我创建了空白页面以链接到MenuItem
类,并在空白页面中放入带有一些文本的文本块控件。在导航中,实际上没有显示任何内容。使用实时可视化树检查应用程序,显示空白页面,但文本在哪里?
有人有什么建议吗?如果你好奇的话,我的所有代码都在下面
MainPage.xaml:
<Page
x:Class="App1.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App1"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls"
mc:Ignorable="d">
<Page.Resources>
<DataTemplate x:Key="DefaultTemplate" x:DataType="local:MenuItem">
<Grid Width="240" Height="48" HorizontalAlignment="Left">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="48" />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<SymbolIcon Grid.Column="0" Symbol="{x:Bind Icon, Mode=OneWay}" Foreground="White" />
<TextBlock Grid.Column="1" Text="{x:Bind Name, Mode=OneWay}" FontSize="16" VerticalAlignment="Center" Foreground="White" />
</Grid>
</DataTemplate>
</Page.Resources>
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<controls:HamburgerMenu x:Name="hamburgerMenuControl"
PaneBackground="Black"
Foreground="White"
ItemTemplate="{StaticResource DefaultTemplate}"
ItemClick="OnMenuItemClick"
OptionsItemTemplate="{StaticResource DefaultTemplate}"
OptionsItemClick="OnMenuItemClick">
<Frame x:Name="contentFrame"/>
</controls:HamburgerMenu>
</Grid>
</Page>
MainPage.xaml.cs:
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
hamburgerMenuControl.ItemsSource = MenuItem.GetMainItems();
hamburgerMenuControl.OptionsItemsSource = MenuItem.GetOptionsItems();
}
private void OnMenuItemClick(object sender, ItemClickEventArgs e)
{
var menuItem = e.ClickedItem as MenuItem;
contentFrame.Navigate(menuItem.PageType);
}
}
菜单项.cs:
class MenuItem
{
public Symbol Icon { get; set; }
public string Name { get; set; }
public Type PageType { get; set; }
public static List<MenuItem> GetMainItems()
{
var items = new List<MenuItem>();
items.Add(new MenuItem() { Icon = Symbol.Map, Name = "Item 1", PageType = typeof(Views.BlankPage) });
items.Add(new MenuItem() { Icon = Symbol.BrowsePhotos, Name = "Item 2", PageType = typeof(Views.BlankPage) });
return items;
}
public static List<MenuItem> GetOptionsItems()
{
var items = new List<MenuItem>();
items.Add(new MenuItem() { Icon = Symbol.Setting, Name = "Settings", PageType = typeof(Views.BlankPage) });
return items;
}
}
空白页.xaml
<Page
x:Class="App1.Views.BlankPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App1.Views"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<TextBlock FontSize="48">This is blank!</TextBlock>
</Grid>
</Page>