问题描述
我的代码哪里出问题了？
我的应用程序在调试模式下可以正常工作。但是当我进入发布模式时，某些小部件不会显示哪个放置在堆栈中。
我也获得了互联网许可。 <uses-permission android:name="android.permission.INTERNET"/>
这是我想要的Debug版本输出。
这是我的代码-
import 'package:boimarket/model/model.dart';
import 'package:boimarket/screen/pdfscreen.dart';
import 'package:Flutter/material.dart';
import 'package:Flutter/services.dart';
class BookDescription extends StatefulWidget {
BookDescription({Key key,@required this.storyBooksValue}) : super(key: key);
final storyBooksValue;
@override
_BookDescriptionState createState() => _BookDescriptionState();
}
class _BookDescriptionState extends State<BookDescription> {
@override
void initState() {
SystemChrome.setPreferredOrientations([
DeviceOrientation.portraitDown,DeviceOrientation.portraitUp,]);
super.initState();
}
@override
void dispose() {
SystemChrome.setPreferredOrientations([
DeviceOrientation.portraitDown,]);
}
@override
Widget build(BuildContext context) {
var _BoxHeight = MediaQuery.of(context).size.height;
var _BoxWidth = MediaQuery.of(context).size.width;
final Color _whiteCream = Color.fromrGBO(250,245,228,.8);
final Color _darkBlue = Color.fromrGBO(0,68,69,1);
final Color _lightBlue = Color.fromrGBO(44,120,108,1);
return Scaffold(
appBar: null,body: Stack(
children: <Widget>[
Container(
color: _lightBlue,child: Stack(
children: <Widget>[
Card(
elevation: 10,child: Container(
height: _BoxHeight,width: _BoxWidth,child: FadeInImage.assetNetwork(
fadeOutCurve: Curves.easeInCubic,placeholder: 'assets/images/cover.jpg',image: widget.storyBooksValue.imgurl == null
? "https://firebasestorage.googleapis.com/v0/b/boi-market.appspot.com/o/images%2Fcover.jpg?alt=media&token=f8070b25-533c-454b-9d2e-80702d72371e"
: widget.storyBooksValue.imgurl,height: _BoxHeight,fit: BoxFit.cover,),Container(
height: _BoxHeight,color: Colors.black54,Align(
alignment: Alignment.bottomCenter,child: SingleChildScrollView(
child: Column(
children: [
Container(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,children: [
Container(
padding: EdgeInsets.only(left: 20,top: 60.0),child: Expanded(
child: Text(
"এই লেখকের আরও কিছু বই",style: TextStyle(
fontSize: 30,fontWeight: FontWeight.bold,color: Colors.white),overflow: TextOverflow.clip,Container(
padding: EdgeInsets.only(top: 10,bottom: 10),height: 250.0,child: FutureBuilder(
future: fetchBooks(),builder: (context,AsyncSnapshot<List<Book>> snapshot) {
if (!snapshot.hasData) {
return Column(
mainAxisAlignment:
MainAxisAlignment.center,crossAxisAlignment:
CrossAxisAlignment.center,children: <Widget>[
CircularProgressIndicator(
backgroundColor: _whiteCream,Text("Loading"),],);
} else {
var writterBooks = snapshot.data
.where((b) =>
b.author ==
widget.storyBooksValue.author)
.toList();
print(writterBooks.length);
return ListView.builder(
scrollDirection: Axis.horizontal,itemCount: writterBooks.length,itemBuilder: (context,index) {
return GestureDetector(
onTap: () {
Route route = MaterialPageRoute(
builder: (context) =>
BookDescription(
storyBooksValue:
writterBooks[
index]),);
Navigator.push(context,route);
},child: Container(
padding: EdgeInsets.all(10),child: Column(
children: [
Container(
width: 100,height: 140.0,child: ClipRRect(
borderRadius:
BorderRadius
.circular(5.0),child: FadeInImage
.assetNetwork(
fadeOutCurve:
Curves.linear,placeholder:
'assets/images/cover.jpg',image: writterBooks[
index]
.imgurl ==
null
? "https://firebasestorage.googleapis.com/v0/b/boi-market.appspot.com/o/images%2Fcover.jpg?alt=media&token=f8070b25-533c-454b-9d2e-80702d72371e"
: writterBooks[
index]
.imgurl,width: 90,height: 120.0,Flexible(
child: Container(
width: 90,child: Text(
"${writterBooks[index].name}",style: TextStyle(
color:
Colors.white,fontWeight:
FontWeight
.bold,fontSize: 12.0),overflow:
TextOverflow.clip,);
});
}
},Container(
width: _BoxWidth,decoration: Boxdecoration(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(40.0),topRight: Radius.circular(40.0)),color: _whiteCream,BoxShadow: [
BoxShadow(
color: Colors.black45,blurRadius: 5.0,spreadRadius: 1.0)
],child: Padding(
padding: EdgeInsets.all(20),child: Column(
children: <Widget>[
SizedBox(
height: 30.0,Row(
mainAxisAlignment:
MainAxisAlignment.spaceBetween,children: [
Expanded(
child: Container(
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,children: [
RichText(
overflow: TextOverflow.clip,text: TextSpan(
style: TextStyle(
color: Colors.black),children: [
TextSpan(
text: "বইয়ের নামঃ",style: TextStyle(
fontWeight:
FontWeight.bold,fontSize: 16.0)),TextSpan(
text:
" ${widget.storyBooksValue.name}")
]),SizedBox(
height: 5.0,RichText(
overflow: TextOverflow.clip,children: [
TextSpan(
text: "লেখকঃ",TextSpan(
text:
" ${widget.storyBooksValue.author}")
]),children: [
TextSpan(
text: "বইয়ের ধরণঃ",TextSpan(
text:
" ${widget.storyBooksValue.genreClass}")
]),Card(
elevation: 5.0,child: FadeInImage.assetNetwork(
fadeOutCurve: Curves.easeInCubic,image: widget.storyBooksValue.imgurl ==
null
? "https://firebasestorage.googleapis.com/v0/b/boi-market.appspot.com/o/images%2Fcover.jpg?alt=media&token=f8070b25-533c-454b-9d2e-80702d72371e"
: widget.storyBooksValue.imgurl,height: 100.0,Divider(),widget.storyBooksValue.description == null
? Center(
child: Text(
'দুঃখিত,${widget.storyBooksValue.name} বইটির বর্ণনা পাওয়া যায়নি'))
: SelectableText(
'${widget.storyBooksValue.description} \n',Text(
'আমরা বইটির একটি ebook খুজে পেয়েছি । \n\n আপনি বইটি পড়তে চাইলে," Read Now " বাটনে ক্লিক করুন । \n'),SizedBox(
height: 75.0,)
],)
],Padding(
padding: EdgeInsets.only(left: 10.0,top: 20.0),child: IconButton(
icon: Icon(Icons.arrow_back),onpressed: () {
Navigator.pop(context,false);
}),Positioned(
bottom: 60.0,right: 20.0,child: RaisedButton(
onpressed: () {
print("clicked");
Navigator.push(
context,MaterialPageRoute(
builder: (context) =>
PdfScreen(singleBookData: widget.storyBooksValue)),);
},shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30)),color: _darkBlue,child: Text(
"Read Now",style: TextStyle(color: _whiteCream),);
}
}
如何解决此问题？请有人帮我。
解决方法
我通过删除文本容器解决了我的问题。只需使用text（）而不使用container（）
Expanded(
child: Text("এই লেখকের আরও কিছু বই",style: TextStyle(
fontSize: 30,fontWeight: FontWeight.bold,color: Colors.white),overflow: TextOverflow.clip,),)
要创建APP的发行版，您可以使用android studio， 当我创建应用程序的发行版时，我目前正在开发一个Flutter项目，然后该应用程序仅显示白色的空白屏幕，并且没有其他任何内容，我尝试了所有方法来解决此问题，但在搜索了两天后似乎没有任何效果知道使用android studio我们还可以创建应用程序的发行版，使用android studio的应用程序发行版解决了我的问题。
我个人的选择是用于flutter项目的android studio。
这是我用来创建发行版本的问题的链接。