android TabLayout设置选项卡之间的距离无效已解决

根据下面的链接设置完距离后无法生效

https://www.jb51.net/article/131304.htm

　　layout

<com.google.android.material.tabs.TabLayout
    android:id="@+id/tabDots"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:layout_marginTop="-100dp"
    app:tabBackground="@drawable/tab_selector"
    app:tabGravity="center"
    app:tabIndicatorGravity="center"
    app:tabIndicatorHeight="0dp"
    app:tabMode="fixed"
    app:tabMaxWidth="80dp"
    app:tabMinWidth="20dp"
    app:tabPaddingStart="20dp"
    app:tabPaddingEnd="20dp"
    />

tab_selector.xml

xml version="1.0" encoding="utf-8"?>

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/selected_dot" android:state_selected="true" />

    <item android:drawable="@drawable/default_dot" />

</selector>

selected_dot.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape
            android:innerRadius="0dp"
            android:shape="ring"
            android:thickness="8dp"
            android:useLevel="false">
            <solid android:color="#FFFFFF"/>
        </shape>
    </item>
</layer-list>

default_dot.xml

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape
            android:innerRadius="0dp"
            android:shape="ring"
            android:thickness="8dp"
            android:useLevel="false">
            <solid android:color="#66FFFFFF"/>
        </shape>
    </item>
</layer-list>

把下面这四个属性设置后就好了
app:tabMaxWidth="80dp"
app:tabMinWidth="20dp"
app:tabPaddingStart="20dp"
app:tabPaddingEnd="20dp"