TabLayout自定义间距

 <com.google.android.material.tabs.TabLayout
                android:id="@+id/tabLayout"
                android:layout_width="wrap_content"
                android:layout_height="38dp"
                android:layout_gravity="center"
                app:layout_constraintEnd_toEndOf="parent"
                android:layout_marginHorizontal="@dimen/dp_44"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:layout_constraintBottom_toBottomOf="parent"
                app:tabBackground="@android:color/transparent"
                app:tabGravity="center"
                app:tabIndicator="@drawable/shape_tab_indicator_me"
                app:tabIndicatorColor="@color/color_00CD83"
                app:tabIndicatorFullWidth="false"
                app:tabIndicatorHeight="0dp"
                app:tabMode="fixed"
                app:tabMaxWidth="0dp"
                app:tabPaddingStart="0dp"
                app:tabPaddingEnd="0dp"
                app:tabRippleColor="@android:color/transparent" />

主要添加属性

app:tabMaxWidth="0dp"
                app:tabPaddingStart="0dp"
                app:tabPaddingEnd="0dp"

创建tab View

 for (index in titles.indices) {
            val newTab = binding.tabLayout.newTab()
            val tabView = ItemWalletTitleTabBinding.inflate(layoutInflater).run {
                tabBindings.add(this)
                if (index == 0) {
                    this.ivTab.alpha = 1f
                } else {
                    this.ivTab.alpha = 0.4f
                }
                this.ivTab.setImageResource(titles[index])
                layout
            }
            binding.tabLayout.addTab(newTab.setCustomView(tabView))
        }

布局文件

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <FrameLayout
        android:id="@+id/layout"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <ImageView
            android:id="@+id/ivTab"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:layout_marginHorizontal="@dimen/dp_6"
            android:scaleType="fitCenter" />

    </FrameLayout>
</layout>