如何给PopupMenu添加圆角

<style name="PopupMenuStyle" parent="@android:style/Widget.PopupMenu">
    <item name="android:popupBackground">@drawable/popup_menu_background</item>
</style>

<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#FFFFFF" /> <!-- 背景颜色 -->
    <corners android:radius="8dp" /> <!-- 圆角半径 -->
</shape>

// 创建PopupMenu对象
PopupMenu popupMenu = new PopupMenu(context, anchorView);
// 设置自定义样式
popupMenu.getMenuInflater().inflate(R.menu.popup_menu, popupMenu.getMenu());
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
    popupMenu.setForceShowIcon(true);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    popupMenu.setGravity(Gravity.END);
}
popupMenu.setCallback(new PopupMenu.Callback() {
    @Override
    public boolean onMenuItemSelected(@NonNull MenuBuilder menu, @NonNull MenuItem item) {
        // 处理菜单项点击事件
        return true;
    }

    @Override
    public void onMenuModeChange(@NonNull MenuBuilder menu) {
        // 菜单模式改变时的回调
    }
});
// 显示PopupMenu
popupMenu.show();