我正在为我的Android应用程序实现标签布局。我尝试将每个标签设置为textAllCaps设置为false（app:tabTextAppearance="@style/MyCustomTextAppearance"）的某种样式，但是这对我不起作用。这个问题不是重复的，因为我不使用一个TabLayout，而是使用TabHost。下面是我的代码：

styles.xml 中的样式：

<style name="MyCustomTextAppearance" parent="TextAppearance.Design.Tab">
    <item name="textAllCaps">false</item>
</style>

content_main.xml ：

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ffffff"
        tools:context=".Mainactivity"
        app:tabTextAppearance="@style/MyCustomTextAppearance"
        tools:showIn="@layout/activity_main">

        <TabHost
            android:id="@+id/tab_host"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:background="#ffffff"
            app:tabTextAppearance="@style/MyCustomTextAppearance"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent">

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                app:tabTextAppearance="@style/MyCustomTextAppearance"
                android:orientation="vertical">

                <FrameLayout
                    android:id="@android:id/tabcontent"
                    app:tabTextAppearance="@style/MyCustomTextAppearance"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content">

                    <LinearLayout
                        android:id="@+id/tab1"
                        app:tabTextAppearance="@style/MyCustomTextAppearance"
                        android:layout_width="fill_parent"
                        android:layout_height="wrap_content"
                        android:orientation="horizontal" />

                    <LinearLayout
                        android:id="@+id/tab2"
                        app:tabTextAppearance="@style/MyCustomTextAppearance"
                        android:layout_width="fill_parent"
                        android:layout_height="wrap_content"
                        android:orientation="horizontal" />

                    <LinearLayout
                        android:id="@+id/tab3"
                        app:tabTextAppearance="@style/MyCustomTextAppearance"
                        android:layout_width="fill_parent"
                        android:layout_height="wrap_content"
                        android:orientation="horizontal" />
                </FrameLayout>

                <tabwidget
                    android:id="@android:id/tabs"
                    app:tabTextAppearance="@style/MyCustomTextAppearance"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content" />
            </LinearLayout>
        </TabHost>


        <com.anychart.AnyChartView
            android:id="@+id/piechart"
            android:layout_width="match_parent"
            android:layout_height="200dp"
            app:layout_constraintTop_toBottomOf="@+id/tab_host"
            />

    </androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>

以下是我的应用程序的外观（选项卡的文本仍大写）：