如何解决我想让我的代码响应任何屏幕尺寸 flutter dart
我想让我的应用程序响应任何屏幕尺寸，就像我尝试使用灵活的 Mediaquery 并将我的代码放在一个容器上，我把它放在一行中
但是当我在我的手机上尝试它时它看起来很不错，而在其他手机上它看起来又大又坏 那么我怎样才能让它对任何屏幕尺寸做出响应， ps：当我在任何屏幕上调试它时，它看起来不错，但是当我释放它以将其转换为 apk 并尝试将其用于另一部手机时，它看起来很糟糕并且没有响应
import 'package:ecofun_ui/screens/details_screen.dart';
import 'package:ecofun_ui/widget/category-card.dart';
import 'package:Flutter/cupertino.dart';
import 'package:Flutter/material.dart';
import 'slide.dart';
import 'package:auto_size_text/auto_size_text.dart';
//import 'package:bubble_bottom_bar/bubble_bottom_bar.dart';
void main() {
runApp(MaterialApp(
theme: ThemeData(primarySwatch: Colors.deepOrange),debugShowCheckedModeBanner: false,home: SplashPage(duration: 3,goToPage: WelcomePage())));
}
//start the splash page
class SplashPage extends StatelessWidget {
int duration = 0;
Widget goToPage;
SplashPage({this.goToPage,this.duration});
@override
Widget build(BuildContext context) {
Future.delayed(Duration(seconds: this.duration),() {
Navigator.push(
context,MaterialPageRoute(builder: (context) => this.goToPage));
});
return Scaffold(
body: Container(
color: Colors.deepOrange,alignment: Alignment.center,child: logoWhite()));
}
} //the end of splashpage screen
//start the welcome screen
class WelcomePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
body: Column(children: <Widget>[
Flexible(
child: FractionallySizedBox(
heightFactor: 1,widthFactor: 1,child: Container(
color: Colors.white,child: LayoutBuilder(
builder: (ctx,constraints) {
return Column(children: <Widget>[
SizedBox(
height: constraints.maxHeight * 0.15,),Text('E c o F u n',textAlign: TextAlign.center,style: TextStyle(
color: Colors.blueGrey,fontSize: 60,fontWeight: FontWeight.w900)),SizedBox(
height: constraints.maxHeight * 0.1,Padding(
padding: EdgeInsets.all(10),child: FlatButton(
onpressed: () {
Navigator.push(
context,MaterialPageRoute(
builder: (context) => HomeScreen()));
},shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50)),color: Colors.deepOrange,padding: EdgeInsets.only(
top: 15,bottom: 15,left: 70,right: 70),child: AutoSizeText(
' نادي الرقي ',style: TextStyle(fontSize: 28,color: Colors.white),maxLines: 1,)),Container(
margin: EdgeInsets.all(15),child: ClipRRect(
borderRadius: BorderRadius.circular(50),child: Material(
color: Colors.transparent,child: InkWell(
splashColor: Colors.deepOrange.withOpacity(0.2),highlightColor:
Colors.deepOrange.withOpacity(0.2),onTap: () {},child: Container(
padding: EdgeInsets.only(
right: 70,top: 15,bottom: 15),child: AutoSizeText(
'حساب المعدل',style: TextStyle(
fontSize: 28,color: Colors.deepOrange),decoration: Boxdecoration(
borderRadius: BorderRadius.circular(50),color: Colors.transparent,border: Border.all(
color: Colors.deepOrange,width: 3,)))),Container(
height: constraints.maxHeight * 0.3,decoration: Boxdecoration(
color: Colors.transparent,image: decorationImage(
image: Assetimage("images/teamspirit.gif"),fit: BoxFit.fitWidth)),Column(
children: [
Container(
height: constraints.maxHeight * 0.01,width: constraints.maxWidth * 0.2,decoration: Boxdecoration(
color: Colors.blue,borderRadius: BorderRadius.circular(10),SizedBox(
height: constraints.maxHeight * 0.02,AutoSizeText(
'All right reserved for EcoClub\n Devlopped by Imen Lakrib',style: TextStyle(fontSize: 15,color: Colors.black),maxLines: 2,],)
]);
},)
]));
} //the end of welcome screen
}
class logoWhite extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Container(
width: 400,height: 200,child: Image.asset(
"images/logowhite.png",//fit: BoxFit.cover,));
}
}
// onboarding class with widgets
class HomeScreen extends StatefulWidget {
@override
_HomeScreenState createState() => _HomeScreenState();
}
class _HomeScreenState extends State<HomeScreen> {
int _currentPage = 0;
PageController _controller = PageController();
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,home: Scaffold(
backgroundColor: Color(0xFF3084AC),body: Container(
margin: EdgeInsets.only(top: 500 / 100),decoration: Boxdecoration(
color: Colors.white,borderRadius: BorderRadius.only(
topLeft: Radius.circular(40),topRight: Radius.circular(40))),child: Stack(
children: [
// Pageview
PageView.builder(
scrollDirection: Axis.horizontal,onPageChanged: _onchanged,controller: _controller,itemCount: _pages.length,itemBuilder: (context,int index) {
return _pages[index];
}),Column(
mainAxisAlignment: MainAxisAlignment.end,children: [
Row(
mainAxisAlignment: MainAxisAlignment.center,children: List<Widget>.generate(_pages.length,(int index) {
return AnimatedContainer(
duration: Duration(milliseconds: 300),height: 6,width: (index == _currentPage) ? 20 : 10,margin:
EdgeInsets.symmetric(horizontal: 5,vertical: 30),decoration: Boxdecoration(
borderRadius: BorderRadius.circular(5),color: (index == _currentPage)
? Colors.blue
: Colors.orange),);
}),InkWell(
onTap: () {
_controller.nextPage(
duration: Duration(milliseconds: 800),curve: Curves.easeInOutQuint);
},child: AnimatedContainer(
alignment: Alignment.center,duration: Duration(milliseconds: 300),height: 44,width: 217,decoration: Boxdecoration(
color: Colors.blue,borderRadius: BorderRadius.circular(15),BoxShadow: [
BoxShadow(
color: Color(0xFF263238).withOpacity(0.5),blurRadius: 4,spreadRadius: 1)
]),child: (_currentPage == (_pages.length - 1))
? Text(
"Get Started",style: TextStyle(
color: Colors.white,fontSize: 20,)
: Text(
"Next",SizedBox(
height: 11,SizedBox(
height: 15,)
],);
}
// generate Page View
List<Widget> _pages = [
SliderPage(
title: "من نحن",descreption:
"أول نادي ثقافي علمي بجامعة الجزائر 3 \n تم انشاءه من قبل طلبة اختلفت افكارهم \n واجتمع حب المبادرة لديهم والرغبة في التغيير \n وترك الاثر في الجامعة",beginColor: Color(0xFFB6E3F3),endColor: Color(0xFF061922),bgscreen: "images/screen_1.png",SliderPage(
title: "اهدافنا",descreption:
"مرافقة الطالب وتشجيعه وتحفيزه لان يكون \n طالبا مثقفا ملما بتخصصه او بما له صلة به ",beginColor: Color(0xFFB469EC),endColor: Color(0xFF3E165B),bgscreen: "images/screen_2.png",SliderPage(
title: "رؤيتنا",descreption:
"تاهيل وتجهيز الطالب للحياة المهنية \n ليكون مسلحا بالمهارات التي يطلبها سوق العمل",beginColor: Color(0xFF79E69F),endColor: Color(0xFF136A33),bgscreen: "images/screen_3.png",SliderPage(
title: "شعارنا",descreption: "رسخ فكرة .. جسد عملا .. اترك اثرا",bgscreen: "images/screen_5.png",SliderPage(
title: "انظم لنا",descreption:
"ان كنت طالبا تزاول دراستك حاليا \n باحدى كليات جامعة الجزائر 3 \n ماعليك الا مراسلتنا على مختلف صفحاتنا",bgscreen: "images/screen_4.png",)
];
_onchanged(int index) {
setState(() {
_currentPage = index;
});
}
}
//the end of onboarding class with widgets
// calcsecreen start
class CalcScreen extends StatelessWidget {
@override
Widget build(BuildContext context) {
var size = MediaQuery.of(context).size;
return Scaffold(
//bottomNavigationBar: BubbleBottomBar(),body: Stack(
children: <Widget>[
Container(
height: size.height * 1,decoration: Boxdecoration(
color: Colors.orange,image: decorationImage(
alignment: Alignment.centerLeft,image: Assetimage("images/bgorange.png"))),SafeArea(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),child: Column(
crossAxisAlignment: CrossAxisAlignment.center,children: <Widget>[
SizedBox(
height: 25,Text(
'مرحبا بكم في \n برنامج حساب المعدلات',style: Theme.of(context)
.textTheme
.display1
.copyWith(fontWeight: FontWeight.w900),SizedBox(
height: 30,Expanded(
child: GridView.count(
crossAxisCount: 2,childAspectRatio: 1,crossAxisspacing: 20,mainAxisspacing: 20,children: <Widget>[
CategoryCard(
title: 'ماستر 1',image: "images/M1.png",press: () {
Navigator.push(
context,MaterialPageRoute(builder: (context) {
return FifthYear();
}),);
},CategoryCard(
title: 'ماستر 2',image: "images/M2.png",MaterialPageRoute(builder: (context) {
return FordYear();
}),CategoryCard(
title: '1 ليسانس',image: "images/L1.png",MaterialPageRoute(builder: (context) {
return SecondS1();
}),CategoryCard(
title: '2 ليسانس',image: "images/L2.png",MaterialPageRoute(builder: (context) {
return SecondYear();
}),CategoryCard(
title: '3 ليسانس',image: "images/L3.png",MaterialPageRoute(builder: (context) {
return ThirdYear();
}),))
],))
],));
}
}
// calcsecreen end解决方法
您可以使用 flutter_screenutil 包，对于响应式字体，您可以像这样使用
Text(
'16sp,will not change with the system.',style: TextStyle(
color: Colors.black,fontSize: 16.sp,// this will make font responsive
),),对于响应式 UI，您可以像这样使用
//for example:
///If you want to display a square:
///The UI may show a rectangle:
Container(
width: 375.w,height: 375.h,////If you want to display a square:
Container(
width: 300.w,height: 300.w,or
Container(
width: 300.r,height: 300.r,或者您可以使用以下代码识别设备类型
static bool isMobile(BuildContext context) =>
MediaQuery.of(context).size.width < 650;
static bool isTablet(BuildContext context) =>
MediaQuery.of(context).size.width < 1100 &&
MediaQuery.of(context).size.width >= 650;
static bool isDesktop(BuildContext context) =>
MediaQuery.of(context).size.width >= 1100;
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