我复制了我在YouTube上看的视频，制作了一个Edmob横幅广告。https://www.youtube.com/watch?v=NqorHLdqyV4在void initState（）函数中写入super.initState（），但它在我的Android工作室中没有出现。
import 'dart:convert';
import 'package:google_mobile_ads/google_mobile_ads.dart';
import 'package:share_plus/share_plus.dart';
import 'package:app/count_page.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:provider/provider.dart';
import './main.dart';
class HomePage extends StatelessWidget {
HomePage({Key? key}) : super(key: key);
final String androidTestId = 'ca-app-pub-3940256099942544/6300978111';
late CountPage _countPage; BannerAd? banner;
@override
void initState() {
super.initState();
banner = BannerAd(
listener: AdManagerBannerAdListener(),
size: AdSize.banner,
adUnitId: androidTestId,
request: AdRequest(),
)..load();
}
@override
Widget build(BuildContext context) {
_countPage = Provider.of<CountPage>(context, listen: true);
List list = jsonDecode(_countPage.arrayText);
bool toggle = false;
return Scaffold(
appBar: AppBar(
backgroundColor: _countPage.selection,
title: Text('철학 한 스푼'),
centerTitle: true, // 중앙 정렬
elevation: 0.0,
),
drawer: Drawer(
child: ListView(
padding: EdgeInsets.zero,
children: <Widget>[
UserAccountsDrawerHeader(
// currentAccountPicture: CircleAvatar(
// backgroundImage: AssetImage('캡처.png'), // 앱 아이콘 들어갈자리
// backgroundColor: Colors.white,
// ),
accountName: Text('철학 한 스푼'),
accountEmail: Text("개발자 이메일: kaingsik13@naver.com"),
decoration: BoxDecoration(
color: _countPage.selection,
borderRadius: BorderRadius.only(
bottomLeft: Radius.circular(40.0),
bottomRight: Radius.circular(40.0),
)),
),
ListTile(
leading: Icon(
Icons.home,
color: Colors.grey[850],
),
title: Text('메인 화면'),
onTap: () {
print('메인 화면 확인');
},
),
ListTile(
leading: Icon(
Icons.settings,
color: Colors.grey[850],
),
title: Text('설정'),
onTap: () {
Navigator.push(context,
MaterialPageRoute(builder: (BuildContext context) {
return Option_page();
}));
},
),
ListTile(
leading: Icon(
Icons.question_answer,
color: Colors.grey[850],
),
title: Text('리뷰 쓰기'),
onTap: () {
print('리뷰 화면 확인');
},
),
ListTile(
leading: Icon(
Icons.question_answer,
color: Colors.grey[850],
),
title: Text('후원 하기(광고 제거)'),
onTap: () {
print('후원 화면 확인');
},
),
],
),
),
body: Container(
color: Colors.white,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Center(
child: IconButton(
onPressed: () {
_countPage.page_down();
},
icon: Icon(Icons.chevron_left),
),
),
Expanded(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Expanded(
child: Container(
alignment: Alignment(0.0, 0.0),
color: Colors.white,
child: Text(
list[_countPage.page]["message"],
style: TextStyle(
fontSize: _countPage.font,
fontFamily: 'snow',
),
textAlign: _countPage.align,
),
),
),
Container(
height: 40,
width: 300,
color: Colors.white,
child: Center(
child: Text(
list[_countPage.page]["author"],
style: TextStyle(fontSize: 20, color: Colors.black),
))),
Container(
child: AnimatedOpacity(
opacity: _countPage.visible ? 1.0 : 0.0,
duration: Duration(milliseconds: 500),
child: Container(
height: 50,
width: 70,
color: Colors.black38,
child: Center(
child: Text("복사 확인",
style: TextStyle(
fontSize: 15, color: Colors.white)))),
),
),
],
),
),
Center(
child: IconButton(
onPressed: () {
_countPage.page_up();
},
icon: Icon(Icons.chevron_right)))
],
),
),
bottomNavigationBar: BottomAppBar(
color: _countPage.selection,
child: Container(
height: 150,
child: Column(
children: [
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
Center(
child: IconButton(
onPressed: () {
_countPage.copy_on();
Clipboard.setData(ClipboardData(
text: list[_countPage.page]["message"]));
Future.delayed(Duration(milliseconds: 800), () {
_countPage.copy_on();
});
},
icon: Icon(Icons.content_copy))),
Center(
child: IconButton(
onPressed: () {
Share.share(list[_countPage.page]["message"]);
},
icon: Icon(Icons.share))),
],
),
Container(
height: 100,
color: Colors.green[50],
child: this.banner == null
? Container()
: AdWidget(
ad: this.banner!,
),
),
],
),
),
),
);
}
}强制超级初始化状态（）;我试过了，但是出现了错误。如果我的代码有问题，或者我提问的方式有任何改进，我希望你毫不犹豫地告诉我。我可以给你看我写的所有代码。
1条答案
按热度按时间moiiocjp1#
您正在使用
StatelessWidget，但initState仅在StatefulWidget的State上可用您的代码应该如下所示