已經解決了可以透過設定背景shape圖片來解決shape程式碼如下

android:shape="rectangle">

android:topLeftRadius="100dp"
android:topRightRadius="100dp"
android:bottomRightRadius="100dp"
android:bottomLeftRadius="100dp">

android:width="3dp"
android:color="#bebebe">

用 shape 畫

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

    <solid
        android:color="@android:color/transparent"/>
    <stroke
        android:color="@android:color/darker_gray"
        android:width="1dp"/>
    <corners
        android:radius="20dp"/>
</shape>