[英]A RenderFlex overflowed by 1443 pixels on the bottom
我正在嘗試使其可滾動...在此處輸入圖像描述由於某種原因它無法滾動,我嘗試添加 singleChildScrollview 仍然無法正常工作...請查看圖片以更好地理解...所以我發布了完整的代碼這樣你們就可以更好地幫助我......這是我得到的錯誤“考慮應用彈性因子(例如使用擴展小部件)來強制 RenderFlex 的子級適應可用空間而不是調整到它們的自然大小大小。這被認為是錯誤條件,因為它表明有內容看不到。如果內容合法地大於可用空間,請考慮在將其放入 flex 之前使用 ClipRect 小部件對其進行裁剪,或使用可滾動容器而不是 Flex,比如 ListView。”
import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/material.dart';
import 'package:memoryblog/helper/authenticate.dart';
import 'package:memoryblog/services/auth.dart';
import 'package:memoryblog/services/database.dart';
import 'package:memoryblog/views/create_blog.dart';
class MemoryRoom extends StatefulWidget {
@override
_MemoryRoomState createState() => _MemoryRoomState();
}
class _MemoryRoomState extends State<MemoryRoom> {
AuthMethod authMethod = new AuthMethod();
DatabaseMethods databaseMethod = new DatabaseMethods();
Stream blogsStream;
Widget BlogsList(){
return Container(
child: blogsStream != null ? Column(
children: <Widget>[
StreamBuilder(
stream: blogsStream,
builder: (context, snapshot){
if(snapshot.data == null) return CircularProgressIndicator();
return ListView.builder(
padding: EdgeInsets.symmetric(horizontal: 16),
itemCount: snapshot.data.documents.length,
shrinkWrap: true,
itemBuilder: (context, index){
return BlogsTile(
authorName: snapshot.data.documents[index].data['memoryName'],
title: snapshot.data.documents[index].data['title'],
description: snapshot.data.documents[index].data['desc'],
imgUrl: snapshot.data.documents[index].data['imgUrl'],
);
}
);
},
)
],
) : Container(
alignment: Alignment.center,
child: CircularProgressIndicator(),
)
);
}
@override
void initState() {
// TODO: implement initState
databaseMethod.getData().then((result){
setState(() {
blogsStream = result;
});
});
super.initState();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Row(
children: <Widget>[
Text(
"Memory"
),
Text(
"Blog",
style: TextStyle(
color: Colors.blue
),
)
],
),
backgroundColor: Colors.transparent,
elevation: 0.0,
actions: <Widget>[
GestureDetector(
onTap: (){
authMethod.signOut();
Navigator.pushReplacement(context, MaterialPageRoute(
builder: (context) => Authenticate()
));
},
child: Container(
padding: EdgeInsets.symmetric(horizontal: 16),
child: Icon(Icons.power_settings_new)),
)
],
),
body: BlogsList(),
floatingActionButton: Container(
padding: EdgeInsets.symmetric(vertical: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
FloatingActionButton(
onPressed: (){
Navigator.push(context, MaterialPageRoute(
builder: (context) => CreateBlog()
));
},
child: Icon(Icons.add),
)
],
),
),
);
}
}
class BlogsTile extends StatelessWidget {
String imgUrl, title, description, authorName;
BlogsTile({@required this.imgUrl, @required this.title, @required this.description, @required this.authorName,});
@override
Widget build(BuildContext context) {
return Container(
margin: EdgeInsets.only(bottom: 16),
height: 170,
child: Stack(
children: <Widget>[
ClipRRect(
borderRadius: BorderRadius.circular(6),
child: CachedNetworkImage(
imageUrl: imgUrl,
width: MediaQuery.of(context).size.width,
fit: BoxFit.cover,
)
),
Container(
height: 170,
decoration: BoxDecoration(
color: Colors.black45.withOpacity(0.3),
borderRadius: BorderRadius.circular(6)
),
),
Container(
width: MediaQuery.of(context).size.width,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Text(
title,
textAlign: TextAlign.center,
style: TextStyle(fontSize: 25, fontWeight: FontWeight.w500),
),
SizedBox(height: 4,),
Text(
description,
textAlign: TextAlign.center,
style: TextStyle(fontSize: 17, fontWeight: FontWeight.w400),
),
SizedBox(height: 4,),
Text(authorName)
],
),
)
],
),
);
}
}
使用 ListView 代替列。 或使用 SingleChildScrollView 包裝列
return Container(
child: blogsStream != null
? ListView(
children: <Widget>[
StreamBuilder(
stream: blogsStream,
builder: (context, snapshot) {
if (snapshot.data == null) return CircularProgressIndicator();
return ListView.builder(
padding: EdgeInsets.symmetric(horizontal: 16),
itemCount: snapshot.data.documents.length,
shrinkWrap: true,
itemBuilder: (context, index) {
return BlogsTile(
authorName:
snapshot.data.documents[index].data['memoryName'],
title: snapshot.data.documents[index].data['title'],
description:
snapshot.data.documents[index].data['desc'],
imgUrl: snapshot.data.documents[index].data['imgUrl'],
);
});
},
)
],
)
: Container(
alignment: Alignment.center,
child: CircularProgressIndicator(),
),
);
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