android - 当我使构建版本颤动时，http请求停止
问题描述
我的应用程序有问题，当我在模拟器中运行时，一切正常。就在我构建apk时，应用程序停止从 API URL 获取数据，我尝试使用调试版本，一切正常。所以发布版本的问题。当然，我在 Android 清单文件中拥有 Internet 权限。我正在使用package:dio/dio.dart处理 HTTP 请求
飞镖代码
import 'package:caro_app/restaurant.dart';
import 'package:caro_app/screens/FadeAnimation.dart';
import 'package:caro_app/screens/restaurant.dart';
import 'package:dio/dio.dart' as http_dio;
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'dart:async';
import 'card.dart';
class HomePageApp extends StatefulWidget {
@override
_HomePageAppState createState() => _HomePageAppState();
}
class _HomePageAppState extends State<HomePageApp> {
Future<List<Restaurant>> _getRestaurantDio() async {
http_dio.Dio dio = http_dio.Dio();
http_dio.Response response = await dio
.get("myurl");
List data = response.data;
return data.map((e) => Restaurant.fromJson(e)).toList();
}
List<Food> food = [];
int sum = 0;
bool isDone = false;
List<Restaurant> allRestaurant = [];
@override
void initState() {
super.initState();
getData();
}
getData() async {
allRestaurant = await _getRestaurantDio();
isDone = true;
setState(() {});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
elevation: 0,
backgroundColor: Colors.transparent,
leading: Container(
child: Icon(
Icons.menu,
color: Colors.orange,
),
),
title: Text(
"Bogota",
style: TextStyle(color: Colors.white, fontSize: 25),
),
brightness: Brightness.light,
actions: <Widget>[
IconButton(
icon: Icon(
Icons.notifications_none,
color: Colors.orange,
),
onPressed: () {},
),
IconButton(
icon: Icon(
Icons.shopping_cart,
color: Colors.orange,
),
onPressed: () {
Route route =
MaterialPageRoute(builder: (context) => CartScreen());
Navigator.push(context, route);
},
)
],
),
body: Stack(
children: <Widget>[
Container(
child: Container(
height: 40,
child: ListView(
scrollDirection: Axis.horizontal,
children: <Widget>[
AspectRatio(
aspectRatio: 2.2 / 1,
child: FadeAnimation(
1,
Container(
margin: EdgeInsets.only(right: 10),
decoration: BoxDecoration(
color: Colors.grey[200],
borderRadius: BorderRadius.circular(20)),
child: Center(
child: Text(
"All",
style:
TextStyle(fontSize: 20, color: Colors.orange),
),
),
)),
),
AspectRatio(
aspectRatio: 2.2 / 1,
child: FadeAnimation(
1.1,
Container(
margin: EdgeInsets.only(right: 10),
child: Center(
child: Text(
"Shaorma",
style:
TextStyle(fontSize: 17, color: Colors.orange),
),
),
)),
),
AspectRatio(
aspectRatio: 2.2 / 1,
child: FadeAnimation(
1.2,
Container(
margin: EdgeInsets.only(right: 10),
child: Center(
child: Text(
"Falafel",
style:
TextStyle(fontSize: 17, color: Colors.orange),
),
),
)),
),
AspectRatio(
aspectRatio: 2.2 / 1,
child: FadeAnimation(
1.3,
Container(
margin: EdgeInsets.only(right: 10),
child: Center(
child: Text(
"Burger",
style:
TextStyle(fontSize: 17, color: Colors.orange),
),
),
)),
),
AspectRatio(
aspectRatio: 2.2 / 1,
child: FadeAnimation(
1.4,
Container(
margin: EdgeInsets.only(right: 10),
child: Center(
child: Text(
"Pizza",
style:
TextStyle(fontSize: 17, color: Colors.orange),
),
),
)),
),
],
),
),
),
Container(
child: Container(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
padding: EdgeInsets.only(
left: 8.0, right: 8.0, top: 75.0, bottom: 0.0),
child: FutureBuilder(
future: _getRestaurantDio(),
builder: (BuildContext context, AsyncSnapshot snapshot) {
print(snapshot.data);
if (snapshot.data == null) {
return Container(
child: Center(
child: Text('Loading..',style: TextStyle(color:Colors.white),),
),
);
} else {
List<Restaurant> restaurant = snapshot.data;
return GridView.builder(
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 1),
itemCount: snapshot.data.length,
itemBuilder: (BuildContext context, int index) {
return Container(
child: InkWell(
onTap: () {
Navigator.push(
context,
new MaterialPageRoute(
builder: (context) => ItemScreen(
user: restaurant[index],
valueSetter: (selectedProducts) {
setState(() {
restaurant
.add(snapshot.data[index]);
sum = 0;
food.forEach((item) {
sum = sum + item.price;
print(sum);
});
});
})));
},
child: FadeAnimation(
1,
Container(
// height: 250,
width: double.infinity,
padding: EdgeInsets.all(20),
margin: EdgeInsets.only(bottom: 20),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(20),
image: DecorationImage(
image:
NetworkImage(restaurant[index].img),
fit: BoxFit.cover),
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment:
MainAxisAlignment.spaceBetween,
children: <Widget>[
Row(
crossAxisAlignment:
CrossAxisAlignment.start,
children: <Widget>[
Expanded(
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
children: <Widget>[
FadeAnimation(
1,
Text(
restaurant[index].name,
style: TextStyle(
color: Colors.orange,
fontSize: 30,
fontWeight:
FontWeight.bold),
)),
SizedBox(
height: 10,
),
FadeAnimation(
1.1,
Container(
padding:
EdgeInsets.all(8),
decoration: BoxDecoration(
color: Colors.orange,
borderRadius:
BorderRadius
.circular(
20)),
child: Text(
restaurant[index]
.family,
style: TextStyle(
color: Colors.white,
fontSize: 20),
))),
],
),
),
FadeAnimation(
1.2,
Container(
width: 35,
height: 35,
decoration: BoxDecoration(
shape: BoxShape.circle,
color: Colors.orange),
child: Center(
child: Icon(
Icons.favorite_border,
size: 20,
color: Colors.white,
),
),
))
],
),
FadeAnimation(
1.2,
Container(
child: Container(
padding: EdgeInsets.all(9),
width: 200,
decoration: BoxDecoration(
color: Colors.deepOrange,
borderRadius:
BorderRadius.circular(20)),
child: Row(
children: <Widget>[
Icon(Icons.location_on),
SizedBox(
width: 10,
),
Text(
restaurant[index].city,
style: TextStyle(
color: Colors.white,
fontSize: 30,
fontWeight:
FontWeight.bold),
),
],
),
))),
],
),
),
),
),
);
},
);
}
},
),
),
),
],
),
);
}
}
class User {
final String name;
final String family;
final String city;
final String img;
List<String> food;
User(this.name, this.family, this.city, this.img);
}
解决方案
将互联网权限添加到 android 文件夹内的 Manifest 文件，如果您从非 https 地址获取数据，则将使用明文流量设为真实；
<manifest ...>
<uses-permission android:name="android.permission.INTERNET" />
<application
...
android:usesCleartextTraffic="true"
...>
...
</application>
</manifest>
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