我在android工程中，引入了flutter module工程，通过以下代码将flutter 的界面添加到android 界面中，发现flutter的界面摭在android 页面的上层，为什么看不到下层的呢。
flutter 页面代码如下：

import 'package:bot_toast/bot_toast.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
class DemoFlutterAndroid extends StatefulWidget {
  var title;
  DemoFlutterAndroid({Key? key, required this.title}) : super(key: key);

  @override
  State<DemoFlutterAndroid> createState() => _DemoFlutterAndroidState();
}

class _DemoFlutterAndroidState extends State<DemoFlutterAndroid> {
  @override
  Widget build(BuildContext context) {
    print(rootBundle.toString());
    return  InkWell(
      child: Container(
        color: Colors.transparent,
        child: Text("adsfas"),
      ),
      onTap: (){
        BotToast.showText(text: "dafsdfsdf");
      },
    );
  }
}

android 添加flutter 代码如下：

   FlutterFragment flutterFragment = FlutterFragment.withNewEngine().initialRoute(data).build();
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        transaction.add(R.id.flutter_conent,flutterFragment);
        transaction.commit();
       

android xml 布局如下：

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!--地图-->
    <com.tencent.tencentmap.mapsdk.maps.MapView
        android:id="@+id/map_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <!--flutter页面占位-->
    <FrameLayout
        android:id="@+id/flutter_conent"
        android:background="@android:color/transparent"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</FrameLayout>

最终在android 页面中看不到底部的地图。