我有一个Xamarin Forms项目,它针对Android,IOS和UWP。 在我的Xamarin.Forms项目App.cs中,我已将MainPage设置为MasterDetailPage继承的类。 我创建了一个自定义导航栏,所以我不想看到默认值。
我已按照步骤隐藏了IOS和Android from this question的默认栏。 现在我想为UWP隐藏它。
我在Xamarin Forms Project中尝试过:
NavigationPage.SetHasNavigationBar(this, false);
在UWP项目中(我尝试分开并同时进行):
Windows.UI.ViewManagement.StatusBar.GetForCurrentView().HideAsync();
Windows.UI.ViewManagement.ApplicationView.GetForCurrentView().TryEnterFullScreenMode();
Windows.UI.ViewManagement.ApplicationView.GetForCurrentView().SuppressSystemOverlays = true;
但没有任何帮助,所以在UWP中,我仍然看到two menubuttons。在图像中,我喜欢隐藏灰色按钮(以及它所属的条形图)。
如果我将App.cs中的MainPage设置为NavigationPage而不使用MasterDetailPage,则以下代码有助于删除该栏:
NavigationPage.SetHasNavigationBar(this, false);
如何使用MasterDetailPage解决此问题?
感谢您的帮助!
编辑:添加代码。
我在MainPage和MenuPage中看到了导航栏。 名为菜单栏的StackLayout是我希望看到的顶部唯一的栏。
App.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
namespace AddressReadApp2
{
public class App : Application
{
public App()
{
MainPage = new MasterDetail();
NavigationPage.SetHasNavigationBar(this, false);
NavigationPage.SetHasNavigationBar(MainPage, false);
}
protected override void OnStart()
{
// Handle when your app starts
}
protected override void OnSleep()
{
// Handle when your app sleeps
}
protected override void OnResume()
{
// Handle when your app resumes
}
}
}
MasterDetail.cs:
namespace AddressReadApp2
{
public class MasterDetail : MasterDetailPage
{
public MasterDetail ()
{
NavigationPage.SetHasNavigationBar(this, false);
Detail = new NavigationPage(new MainPage());
NavigationPage.SetHasNavigationBar(Detail, false);
BackgroundColor = Color.FromRgb(0, 170, 167);
Title = "ibi";
Master = new MenuPage();
MasterBehavior = MasterBehavior.Popover;
}
}
}
MenuPage.xaml.cs:
namespace AddressReadApp2.Pages
{
public partial class MenuPage : ContentPage
{
MasterDetail __parent = null;
MasterDetail _parent
{
get
{
if (__parent == null)
__parent = (MasterDetail)this.Parent;
return __parent;
}
}
MainPage __detail;
MainPage _detail
{
get
{
if (__detail == null && _parent != null)
__detail = (MainPage)((NavigationPage)_parent.Detail).CurrentPage;
return __detail;
}
}
public MenuPage()
{
NavigationPage.SetHasNavigationBar(this, false);
Title = "ibi";
//Icon = "ibi_logo.png";
InitializeComponent();
this.BackgroundColor = Color.FromRgb(0, 170, 167);
menu.GestureRecognizers.Add(new TapGestureRecognizer { Command = new Command(() => _parent.IsPresented = !_parent.IsPresented) });
Device.OnPlatform(
iOS: () =>
{
MenuBar.Padding = new Thickness(0, 25, 0, 0);
}
);
}
}
MenuPage.xaml:
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="AddressReadApp2.Pages.MenuPage">
<StackLayout Orientation="Vertical" VerticalOptions="FillAndExpand">
<StackLayout x:Name="MenuBar" Orientation="Horizontal">
<Image x:Name="menu" Source="menu.png" HeightRequest="35" WidthRequest="35" HorizontalOptions="Start" Margin="10,2,0,0" />
<Image x:Name="logo" Source="ibi_logo2.png" HeightRequest="35" WidthRequest="35" HorizontalOptions="EndAndExpand" Margin="0,0,10,2" />
</StackLayout>
<Grid RowSpacing="2" ColumnSpacing="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="50" />
</Grid.RowDefinitions>
<!-- Between here are Labels for the menu -->
</Grid>
</StackLayout>
</ContentPage>
MainPage.xaml.xs:
namespace AddressReadApp2
{
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
NavigationPage.SetHasNavigationBar(this, false);
MenuBar.BackgroundColor = Color.White;
menu.GestureRecognizers.Add(new TapGestureRecognizer { Command = new Command(() => ((MasterDetailPage)Parent.Parent).IsPresented = true) });
}
}
}
MainPage.xaml中:
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="AddressReadApp2.MainPage" BackgroundColor="White" NavigationPage.TitleIcon="icon.png" x:Name="MainPage">
<StackLayout x:Name="mainStack" Orientation="Vertical" VerticalOptions="FillAndExpand">
<StackLayout x:Name="MenuBar" Orientation="Horizontal">
<Image x:Name="menu" Source="menu2.png" HeightRequest="35" WidthRequest="35" HorizontalOptions="Start" Margin="10,2,0,0" />
<Image x:Name="logo" Source="ibi_logo.png" HeightRequest="35" WidthRequest="35" HorizontalOptions="EndAndExpand" Margin="0,0,10,2" />
</StackLayout>
<StackLayout x:Name="pnlStart" Orientation="Vertical" VerticalOptions="Fill" HorizontalOptions="Fill">
<StackLayout x:Name="pnlWelcome" VerticalOptions="End" Padding="10">
<Label Text="Welcome" VerticalOptions="Center" HorizontalOptions="Center" FontSize="25" />
</StackLayout>
</StackLayout>
</StackLayout>
</ContentPage>
答案 0 :(得分:2)
我认为这样做
public class CustomMasterDetailRenderer :MasterDetailPageRenderer
{
protected override void OnElementChanged(ElementChangedEventArgs<MasterDetailPage> e)
{
base.OnElementChanged(e);
if (Control != null)
{
Control.CollapsedPaneWidth = 0;
Control.CollapseStyle = Xamarin.Forms.PlatformConfiguration.WindowsSpecific.CollapseStyle.Partial;
Control.MasterToolbarVisibility = Windows.UI.Xaml.Visibility.Collapsed;
Control.DetailTitleVisibility = Windows.UI.Xaml.Visibility.Collapsed;
Control.MasterTitleVisibility = Windows.UI.Xaml.Visibility.Collapsed;
Control.ContentTogglePaneButtonVisibility =
Windows.UI.Xaml.Visibility.Collapsed;
}
}
}
现在您可以像这样调用了,我认为您的调用和代码正确,但是您需要为UWP自定义渲染
NavigationPage.SetHasBackButton(this, false);
NavigationPage.SetHasNavigationBar(this, false);