TabLayout 自定义布局

       <com.google.android.material.tabs.TabLayout
        android:id="@+id/tabGridMaterial"
        android:layout_width="0dp"
        android:layout_height="@dimen/dp_27"
        android:background="@android:color/white"
        app:tabMode="scrollable"
        android:layout_marginStart="@dimen/dp_17"
        android:layout_marginEnd="@dimen/dp_17"
        android:layout_marginTop="@dimen/dp_20"
        app:layout_constraintTop_toBottomOf="@+id/tvGridName"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:tabIndicatorHeight="0dp"
        app:tabPaddingStart="0dp"
        app:tabPaddingEnd="0dp"
        app:tabPaddingTop="0dp"
        app:tabPaddingBottom="0dp"
        app:tabMaxWidth="@dimen/dp_43"
        android:visibility="invisible"
        tools:visibility="visible"
        app:tabRippleColor="@null"
        app:tabTextAppearance="@style/MyTabLayout"
        app:tabTextColor="@color/color_1B1C1E" />

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/rvGridMaterial"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="@dimen/dp_20"
        android:layout_marginStart="@dimen/dp_17"
        android:visibility="invisible"
        tools:visibility="visible"
        android:layout_marginEnd="@dimen/dp_17"
        app:layout_constraintTop_toBottomOf="@+id/tabGridMaterial"
        tools:background="@color/color_B2000000"
        tools:layout_height="@dimen/dp_100" />

  TabLayoutMediator(tabGridMaterial,rvGridMaterial) { tab, position ->
                    val customView=LayoutInflater.from(context).inflate(R.layout.layout_tab_featured_grid,tabGridMaterial,false)
                    val tvTabFeaturedGrid=customView.findViewById<AppCompatTextView>(R.id.tvTabFeaturedGrid)
                    tvTabFeaturedGrid.text=indexStr[position]
                    tab.customView = customView
                }.attach()

<androidx.appcompat.widget.LinearLayoutCompat xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <androidx.appcompat.widget.AppCompatTextView
        android:id="@+id/tvTabFeaturedGrid"
        android:layout_width="@dimen/dp_34"
        android:layout_height="@dimen/dp_27"
        android:background="@drawable/selector_tab_featured_grid"
        android:gravity="center"
        android:textColor="@color/selector_text_color_tab_featured_grid"
        android:textSize="@dimen/sp_14" />
</androidx.appcompat.widget.LinearLayoutCompat>

注意点
设置tab间距 ，tab自定义布局与tabMaxWidth 配合使用