Question

Android中的标签页中标签页标题被截断

但在iOS设备中正常运行

我正在使用此代码

public Tabbar()
        {
            //this.BarTextColor = Color.Maroon;
            // New Feed
            var navigationNewFeed = new NavigationPage(new NewFeedView());
            navigationNewFeed.Title = "News Feed";
            navigationNewFeed.Icon = "news";
            Children.Add(navigationNewFeed);

            // Volunteer View
            var navigationPageVolunteer = new NavigationPage(new VolunteerView());
            navigationPageVolunteer.Icon = "Volunteer";
            navigationPageVolunteer.Title = "Volunteer";
            Children.Add(navigationPageVolunteer);


            // LAH View
            var navigationPageLAH = new NavigationPage(new LAHView());
            navigationPageLAH.Icon = "lah";
            navigationPageLAH.Title = "LAH";
            Children.Add(navigationPageLAH);



            // Notification View
            var navigationPageNotification = new NavigationPage(new NotificationView());
            navigationPageNotification.Icon = "notification";
            navigationPageNotification.Title = "Notification";
            Children.Add(navigationPageNotification);


            // Account View
            var navigationPageAccount = new NavigationPage(new AccountView());
            navigationPageAccount.Icon = "account";
            navigationPageAccount.Title = "Account";
            Children.Add(navigationPageAccount);


        }

Answer 1

您可以使用自定义样式并更改选项卡中的文本大小。 How to use custom style for tab

改变风格：

<style name="CustomTab"
       parent="@android:style/Widget.Holo.ActionBar.TabText">
    <item name="android:textSize">5sp</item>
</style>

Answer 2

尝试在Android XF项目中通过In [246]: np.delete(arr[:][:], 1, axis=2).flags Out[246]: C_CONTIGUOUS : True F_CONTIGUOUS : False OWNDATA : True # <========= Its own copy WRITEABLE : True ALIGNED : True UPDATEIFCOPY : False设置较小的文字大小，添加 app：tabTextAppearance =＆＃34;？android：attr / textAppearanceSmall＆＃34;

Tabbar.axml

Answer 3

基本上，在android中，该文本按默认 的格式显示在CAPS中，尽管您在大写字母中键入了首字母，在小写中键入了以下单词（例如，“按钮文本”但是，“接受”显示为接受）。

要覆盖它并在您键入（即接受）时显示它，请将此行包含在您应用于Android活动的主题文件中（例如在YourProject.Android/Resources/values/styles.xml中）

<style name="MyTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    ............
    <item name="android:textAllCaps">false</item>
</style>

感谢Why is my Button text forced to ALL CAPS on Lollipop?

中的答案

编辑：：如果缺少标签标题，则可以使用下面的代码来解决，因为它很好地解决了我的问题！

using Android.Content;
using Android.Support.Design.Internal;
using Android.Views;
using FixedTabbedPage.Droid.CustomRenderers;
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;
using Xamarin.Forms.Platform.Android.AppCompat;

[assembly: ExportRenderer(typeof(TabbedPage), typeof(CustomTabbedPageRenderer))]
namespace FixedTabbedPage.Droid.CustomRenderers
{
    public class CustomTabbedPageRenderer : TabbedPageRenderer
    {
        public CustomTabbedPageRenderer(Context context) : base(context) { }

        protected override void OnElementChanged(ElementChangedEventArgs<TabbedPage> e)
        {
            base.OnElementChanged(e);

            if (ViewGroup != null && ViewGroup.ChildCount > 0)
            {
                BottomNavigationMenuView bottomNavigationMenuView = FindChildOfType<BottomNavigationMenuView>(ViewGroup);

                if (bottomNavigationMenuView != null)
                {
                    var shiftMode = bottomNavigationMenuView.Class.GetDeclaredField("mShiftingMode");

                    shiftMode.Accessible = true;
                    shiftMode.SetBoolean(bottomNavigationMenuView, false);
                    shiftMode.Accessible = false;
                    shiftMode.Dispose();

                    for (var i = 0; i < bottomNavigationMenuView.ChildCount; i++)
                    {
                        var item = bottomNavigationMenuView.GetChildAt(i) as BottomNavigationItemView;
                        if (item == null) continue;                         

                        item.SetShiftingMode(false);
                        item.SetChecked(item.ItemData.IsChecked);
                    }

                    if (bottomNavigationMenuView.ChildCount > 0) bottomNavigationMenuView.UpdateMenuView();
                }
            }
        }

        private T FindChildOfType<T>(ViewGroup viewGroup) where T : Android.Views.View
        {
            if (viewGroup == null || viewGroup.ChildCount == 0) return null;

            for (var i = 0; i < viewGroup.ChildCount; i++)
            {
                var child = viewGroup.GetChildAt(i);

                var typedChild = child as T;
                if (typedChild != null) return typedChild;

                if (!(child is ViewGroup)) continue;

                var result = FindChildOfType<T>(child as ViewGroup);

                if (result != null) return result;
            }

            return null;
        }
    }
}

引用：1）In Xamarin Forms 3.1, when using tabbed page with 4 tabs, how can I prevent "sliding" effect of tab bar on Android?

2）https://forums.xamarin.com/discussion/comment/361462#Comment_361462

感谢jezh和J.Aguilar

希望这会有所帮助。

Xamarin.Forms中标签页的标题截止

3 个答案: