在 Xamarin.Forms Shell 中隐藏 tabbedPage 的标题

Question

我正在使用 shell that was released with Xamarin.Forms 4.0 and now I was migrating a tabbedPage that had an effect 将项目重构为新导航应用于从 tabbedPage 中隐藏 children 的标题，使图标仅可见，使用 Shell 页面不再需要从 TabbedPage 继承，如果不是 class Shell 允许您实现 tabbedPage、masterPage ... 问题是现在我不知道如何应用我以前使用的 effect 因为我无法引用 tabbedPage。

注意：在这种情况下我使用Flyout since I need a design with a hamburger menu and also tabbedPage, that's why I do not use only the TabBar。

<FlyoutItem Route="home"
            Title="TEST"
            Icon="home_icon"
            FlyoutDisplayOptions="AsMultipleItems">
    <ShellContent Route="bottomtab1"
                  Title="TEST1"
                  Icon="target_icon"
                  ContentTemplate="{DataTemplate views:x}" />
    <ShellContent Route="bottomtab2"
                  Title="TEST2"
                  Icon="user_login"
                  ContentTemplate="{DataTemplate views:y}" />
</FlyoutItem>

TabbedPage Image

MasterPage Image

Answer 1

感谢 pfedotovsky user of GitHub I have found an alternative solution until the Xamarin team officially resolves this, in this article 他的解释。

Android 有一个使用自定义渲染器的解决方法。关键是设置

_bottomView.LabelVisibilityMode = LabelVisibilityMode.LabelVisibilityAuto;要么 _bottomView.LabelVisibilityMode = LabelVisibilityMode.LabelVisibilityUnlabeled;

using Android.OS;
using Android.Support.Design.BottomNavigation;
using Android.Support.Design.Widget;
using Android.Views;
using Xamarin.Forms.Platform.Android;

namespace App.Droid
{
    public class AndroidShellItemRenderer : ShellItemRenderer
    {
        BottomNavigationView _bottomView;

        public AndroidShellItemRenderer(IShellContext shellContext) : base(shellContext)
        {
        }

        public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
        {
            var outerlayout = base.OnCreateView(inflater, container, savedInstanceState);

            _bottomView = outerlayout.FindViewById<BottomNavigationView>(Resource.Id.bottomtab_tabbar);
            _bottomView.LabelVisibilityMode = LabelVisibilityMode.LabelVisibilityAuto;

            return outerlayout;
        }
    }
}

要使用此渲染器，您还需要创建自定义 ShellRenderer：

using System;
using Android.Content;
using Conference.Droid;
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;

[assembly: ExportRenderer(typeof(Shell), typeof(AndroidShellRenderer))]
namespace App.Droid
{
    public class AndroidShellRenderer : ShellRenderer
    {
        public AndroidShellRenderer(Context context)
            : base(context)
        {
        }

        protected override IShellItemRenderer CreateShellItemRenderer(ShellItem shellItem)
        {
            return new AndroidShellItemRenderer(this);
        }
    }
}

在 Xamarin.Forms Shell 中隐藏 tabbedPage 的标题

Hide title of tabbedPage in Xamarin.Forms Shell

xamarin.forms

xamarin.forms.shell