Firebase 如何在Flatter中创建从Firestore到CSV文件的数据表
好的，故事是这样的：Firebase 如何在Flatter中创建从Firestore到CSV文件的数据表,firebase,csv,flutter,pdf,google-cloud-firestore,Firebase,Csv,Flutter,Pdf,Google Cloud Firestore,好的，故事是这样的： import 'dart:io'; import 'package:basic_utils/basic_utils.dart'; import 'package:cloud_firestore/cloud_firestore.dart'; import 'package:csv/csv.dart'; import 'package:flutter/material.dart'; import 'package:path_provider/path_provider.d
import 'dart:io';
import 'package:basic_utils/basic_utils.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:csv/csv.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:flutter_email_sender/flutter_email_sender.dart';
class AdminPage extends StatefulWidget {
static final TextEditingController _emailController = TextEditingController();
@override
_AdminPageState createState() => _AdminPageState();
}
class _AdminPageState extends State<AdminPage> {
final GlobalKey<FormState> _formkey = GlobalKey<FormState>();
DocumentSnapshot _currentDocument;
String filePath;
String currentProcess;
bool isProcessing = false;
Future<String> get _localPath async {
final directory = await getApplicationSupportDirectory();
return directory.absolute.path;
}
Future<File> get _localFile async {
final path = await _localPath;
filePath = '$path/clouddata.csv';
return File('$path/clouddata.csv').create();
}
List<List<dynamic>> rows = List<List<dynamic>>();
getCsv(DocumentSnapshot document) async {
setState(() {
currentProcess = "Getting data from the cloud";
isProcessing = true;
});
Firestore.instance
.collection('Airline_Transactions').document(_currentDocument.documentID)
.snapshots();
{
setState(() {
currentProcess = "Decoding data";
});
}
rows.add([
"Date",
"Airline",
"Flight Number",
"Terminal",
"pax",
"Infant",
"Transit",
]);
if (document.data != null) {
for (int i = 0; i < document.data.length; i++) {
List<dynamic> row = List<dynamic>();
row.add(document.data[i]["date"].toString());
row.add(document.data[i]["airline"].toString());
row.add(document.data[i]["flight_number"].toString());
row.add(document.data[i]["terminal"].toString());
row.add(document.data[i]["pax"].toString());
row.add(document.data[i]["infant"].toString());
row.add(document.data[i]["transit"].toString());
rows.add(row);
}
File f = await _localFile.whenComplete(() {
setState(() {
currentProcess = "Writing to CSV";
});
});
String csv = const ListToCsvConverter().convert(rows);
f.writeAsString(csv);
filePath = f.uri.path;
}
}
sendMailAndAttachment() async {
final Email email = Email(
body:
'Data Collected and Compiled by the Datum App. <br> A CSV file is attached to this <b>mail</b> <hr><br> Compiled at ${DateTime.now()}',
subject: 'Datum Entry for ${DateTime.now().toString()}',
recipients: [AdminPage._emailController.text],
isHTML: true,
attachmentPath: filePath,
);
await FlutterEmailSender.send(email);
}
GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(title: Text("Datum Dash")),
body: ListView(
padding: EdgeInsets.only(top: 45, right: 10, left: 10, bottom: 20),
children: <Widget>[
Text("Welcome to DashBoard",
style: TextStyle(fontSize: 30, fontWeight: FontWeight.w500)),
Form(
key: _formkey,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Padding(
padding: const EdgeInsets.only(top: 20.0),
child: TextFormField(
controller: AdminPage._emailController,
validator: (str) => (str.length == 0)
? "please enter your email"
: (!EmailUtils.isEmail(str))
? "please enter a valid email"
: null,
decoration: InputDecoration(
labelText: "Enter your email",
border: OutlineInputBorder(),
suffixIcon: Icon(Icons.email)),
),
),
Padding(
padding: const EdgeInsets.only(top: 8.0),
child: RaisedButton(
color: Theme.of(context).accentColor,
child: Text("Compile and Send"),
onPressed: (isProcessing)
? null
: () async {
if (_formkey.currentState.validate()) {
try {
final result =
await InternetAddress.lookup('google.com');
if (result.isNotEmpty &&
result[0].rawAddress.isNotEmpty) {
await getCsv(_currentDocument).then((v) {
setState(() {
currentProcess =
"Compiling and sending mail";
});
sendMailAndAttachment().whenComplete(() {
setState(() {
isProcessing = false;
});
_scaffoldKey.currentState
.showSnackBar(SnackBar(
content: Text("Data Sent"),
));
});
});
}
} on SocketException catch (_) {
_scaffoldKey.currentState.showSnackBar(SnackBar(
content: Text(
"Connect your device to the internet, and try again"),
));
}
}
},
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Visibility(
visible: (isProcessing) ? true : false,
child: Row(
children: <Widget>[
SizedBox(
child: CircularProgressIndicator(),
height: 25,
width: 25),
Padding(
padding: const EdgeInsets.all(8.0),
child: Text("$currentProcess"),
)
],
),
),
),
],
),
)
],
),
);
}
}
import 'dart:io';
import 'package:basic_utils/basic_utils.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:csv/csv.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:flutter_email_sender/flutter_email_sender.dart';
class AdminPage extends StatefulWidget {
static final TextEditingController _emailController = TextEditingController();
@override
_AdminPageState createState() => _AdminPageState();
}
class _AdminPageState extends State<AdminPage> {
final GlobalKey<FormState> _formkey = GlobalKey<FormState>();
DocumentSnapshot _currentDocument;
String filePath;
String currentProcess;
bool isProcessing = false;
Future<String> get _localPath async {
final directory = await getApplicationSupportDirectory();
return directory.absolute.path;
}
Future<File> get _localFile async {
final path = await _localPath;
filePath = '$path/clouddata.csv';
return File('$path/clouddata.csv').create();
}
List<List<dynamic>> rows = List<List<dynamic>>();
getCsv(DocumentSnapshot document) async {
setState(() {
currentProcess = "Getting data from the cloud";
isProcessing = true;
});
Firestore.instance
.collection('Airline_Transactions').document(_currentDocument.documentID)
.snapshots();
{
setState(() {
currentProcess = "Decoding data";
});
}
rows.add([
"Date",
"Airline",
"Flight Number",
"Terminal",
"pax",
"Infant",
"Transit",
]);
if (document.data != null) {
for (int i = 0; i < document.data.length; i++) {
List<dynamic> row = List<dynamic>();
row.add(document.data[i]["date"].toString());
row.add(document.data[i]["airline"].toString());
row.add(document.data[i]["flight_number"].toString());
row.add(document.data[i]["terminal"].toString());
row.add(document.data[i]["pax"].toString());
row.add(document.data[i]["infant"].toString());
row.add(document.data[i]["transit"].toString());
rows.add(row);
}
File f = await _localFile.whenComplete(() {
setState(() {
currentProcess = "Writing to CSV";
});
});
String csv = const ListToCsvConverter().convert(rows);
f.writeAsString(csv);
filePath = f.uri.path;
}
}
sendMailAndAttachment() async {
final Email email = Email(
body:
'Data Collected and Compiled by the Datum App. <br> A CSV file is attached to this <b>mail</b> <hr><br> Compiled at ${DateTime.now()}',
subject: 'Datum Entry for ${DateTime.now().toString()}',
recipients: [AdminPage._emailController.text],
isHTML: true,
attachmentPath: filePath,
);
await FlutterEmailSender.send(email);
}
GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(title: Text("Datum Dash")),
body: ListView(
padding: EdgeInsets.only(top: 45, right: 10, left: 10, bottom: 20),
children: <Widget>[
Text("Welcome to DashBoard",
style: TextStyle(fontSize: 30, fontWeight: FontWeight.w500)),
Form(
key: _formkey,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Padding(
padding: const EdgeInsets.only(top: 20.0),
child: TextFormField(
controller: AdminPage._emailController,
validator: (str) => (str.length == 0)
? "please enter your email"
: (!EmailUtils.isEmail(str))
? "please enter a valid email"
: null,
decoration: InputDecoration(
labelText: "Enter your email",
border: OutlineInputBorder(),
suffixIcon: Icon(Icons.email)),
),
),
Padding(
padding: const EdgeInsets.only(top: 8.0),
child: RaisedButton(
color: Theme.of(context).accentColor,
child: Text("Compile and Send"),
onPressed: (isProcessing)
? null
: () async {
if (_formkey.currentState.validate()) {
try {
final result =
await InternetAddress.lookup('google.com');
if (result.isNotEmpty &&
result[0].rawAddress.isNotEmpty) {
await getCsv(_currentDocument).then((v) {
setState(() {
currentProcess =
"Compiling and sending mail";
});
sendMailAndAttachment().whenComplete(() {
setState(() {
isProcessing = false;
});
_scaffoldKey.currentState
.showSnackBar(SnackBar(
content: Text("Data Sent"),
));
});
});
}
} on SocketException catch (_) {
_scaffoldKey.currentState.showSnackBar(SnackBar(
content: Text(
"Connect your device to the internet, and try again"),
));
}
}
},
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Visibility(
visible: (isProcessing) ? true : false,
child: Row(
children: <Widget>[
SizedBox(
child: CircularProgressIndicator(),
height: 25,
width: 25),
Padding(
padding: const EdgeInsets.all(8.0),
child: Text("$currentProcess"),
)
],
),
),
),
],
),
)
],
),
);
}
}
import 'dart:io';
import 'package:basic_utils/basic_utils.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:csv/csv.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:flutter_email_sender/flutter_email_sender.dart';
class AdminPage extends StatefulWidget {
static final TextEditingController _emailController = TextEditingController();
@override
_AdminPageState createState() => _AdminPageState();
}
class _AdminPageState extends State<AdminPage> {
final GlobalKey<FormState> _formkey = GlobalKey<FormState>();
DocumentSnapshot _currentDocument;
String filePath;
String currentProcess;
bool isProcessing = false;
Future<String> get _localPath async {
final directory = await getApplicationSupportDirectory();
return directory.absolute.path;
}
Future<File> get _localFile async {
final path = await _localPath;
filePath = '$path/clouddata.csv';
return File('$path/clouddata.csv').create();
}
List<List<dynamic>> rows = List<List<dynamic>>();
getCsv(DocumentSnapshot document) async {
setState(() {
currentProcess = "Getting data from the cloud";
isProcessing = true;
});
Firestore.instance
.collection('Airline_Transactions').document(_currentDocument.documentID)
.snapshots();
{
setState(() {
currentProcess = "Decoding data";
});
}
rows.add([
"Date",
"Airline",
"Flight Number",
"Terminal",
"pax",
"Infant",
"Transit",
]);
if (document.data != null) {
for (int i = 0; i < document.data.length; i++) {
List<dynamic> row = List<dynamic>();
row.add(document.data[i]["date"].toString());
row.add(document.data[i]["airline"].toString());
row.add(document.data[i]["flight_number"].toString());
row.add(document.data[i]["terminal"].toString());
row.add(document.data[i]["pax"].toString());
row.add(document.data[i]["infant"].toString());
row.add(document.data[i]["transit"].toString());
rows.add(row);
}
File f = await _localFile.whenComplete(() {
setState(() {
currentProcess = "Writing to CSV";
});
});
String csv = const ListToCsvConverter().convert(rows);
f.writeAsString(csv);
filePath = f.uri.path;
}
}
sendMailAndAttachment() async {
final Email email = Email(
body:
'Data Collected and Compiled by the Datum App. <br> A CSV file is attached to this <b>mail</b> <hr><br> Compiled at ${DateTime.now()}',
subject: 'Datum Entry for ${DateTime.now().toString()}',
recipients: [AdminPage._emailController.text],
isHTML: true,
attachmentPath: filePath,
);
await FlutterEmailSender.send(email);
}
GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(title: Text("Datum Dash")),
body: ListView(
padding: EdgeInsets.only(top: 45, right: 10, left: 10, bottom: 20),
children: <Widget>[
Text("Welcome to DashBoard",
style: TextStyle(fontSize: 30, fontWeight: FontWeight.w500)),
Form(
key: _formkey,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Padding(
padding: const EdgeInsets.only(top: 20.0),
child: TextFormField(
controller: AdminPage._emailController,
validator: (str) => (str.length == 0)
? "please enter your email"
: (!EmailUtils.isEmail(str))
? "please enter a valid email"
: null,
decoration: InputDecoration(
labelText: "Enter your email",
border: OutlineInputBorder(),
suffixIcon: Icon(Icons.email)),
),
),
Padding(
padding: const EdgeInsets.only(top: 8.0),
child: RaisedButton(
color: Theme.of(context).accentColor,
child: Text("Compile and Send"),
onPressed: (isProcessing)
? null
: () async {
if (_formkey.currentState.validate()) {
try {
final result =
await InternetAddress.lookup('google.com');
if (result.isNotEmpty &&
result[0].rawAddress.isNotEmpty) {
await getCsv(_currentDocument).then((v) {
setState(() {
currentProcess =
"Compiling and sending mail";
});
sendMailAndAttachment().whenComplete(() {
setState(() {
isProcessing = false;
});
_scaffoldKey.currentState
.showSnackBar(SnackBar(
content: Text("Data Sent"),
));
});
});
}
} on SocketException catch (_) {
_scaffoldKey.currentState.showSnackBar(SnackBar(
content: Text(
"Connect your device to the internet, and try again"),
));
}
}
},
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Visibility(
visible: (isProcessing) ? true : false,
child: Row(
children: <Widget>[
SizedBox(
child: CircularProgressIndicator(),
height: 25,
width: 25),
Padding(
padding: const EdgeInsets.all(8.0),
child: Text("$currentProcess"),
)
],
),
),
),
],
),
)
],
),
);
}
}
导入'dart:io'；
导入“包：basic_utils/basic_utils.dart”；
导入“包：cloud_firestore/cloud_firestore.dart”；
导入“包：csv/csv.dart”；
进口“包装：颤振/材料.省道”；
导入“package:path_provider/path_provider.dart”；
导入“package:flatter_email_sender/flatter_email_sender.dart”；
类AdminPage扩展了StatefulWidget{
静态最终TextEditingController _emailController=TextEditingController（）；
@凌驾
_AdminPageState createState（）=>\u AdminPageState（）；
}
类_AdminPageState扩展了状态{
最终的GlobalKey _formkey=GlobalKey（）；
文档快照_currentDocument；
字符串文件路径；
字符串处理；
bool isProcessing=false；
未来获取\u本地路径异步{
最终目录=等待getApplicationSupportDirectory（）；
返回directory.absolute.path；
}
未来获取\u本地文件异步{
最终路径=等待_localPath；
filePath='$path/clouddata.csv'；
返回文件（“$path/clouddata.csv”）.create（）；
}
列表行=列表（）；
getCsv（文档快照文档）异步{
设置状态（）{
currentProcess=“从云获取数据”；
isProcessing=true；
});
Firestore.instance
.collection（“航空公司交易”）.document（\u currentDocument.documentID）
.快照（）；
{
设置状态（）{
currentProcess=“解码数据”；
});
}
行。添加([
“日期”，
“航空公司”，
“航班号”，
“终端”，
“和平”，
“婴儿”，
“过境”，
]);
if（document.data！=null）{
for（int i=0；i此邮件附有一个CSV文件。
在${DateTime.now（）}编译，
主题：${DateTime.now（）.toString（）}的数据项，
收件人：[AdminPage.\u emailController.text]，
伊什特尔：没错，
attachmentPath:filePath，
);
等待电子邮件发件人。发送（电子邮件）；
}
GlobalKey _scaffoldKey=GlobalKey（）；
@凌驾
小部件构建（构建上下文）{
返回脚手架(
钥匙：_scaffoldKey，
appBar:appBar（标题：文本（“基准线”）），
正文：ListView(
填充：仅限边集（顶部：45，右侧：10，左侧：10，底部：20），
儿童：[
文本（“欢迎使用仪表板”，
样式：TextStyle（fontSize:30，fontWeight:fontWeight.w500）），
形式(
键：_formkey，
子：列(
crossAxisAlignment:crossAxisAlignment.start，
儿童：[
填充物(
填充：仅限常量边集（顶部：20.0），
子项：TextFormField(
控制器：AdminPage.\u emailController，
验证程序：（str）=>（str.length==0）
？“请输入您的电子邮件”
：（！EmailUtils.isEmail（str））
？“请输入有效的电子邮件”
：null，
装饰：输入装饰(
labelText：“输入您的电子邮件”，
边框：OutlineInputBorder（），
后缀：图标（Icons.email）），
),
),
填充物(
填充：仅限常量边集（顶部：8.0），
孩子：升起按钮(
颜色：主题。背景。强调颜色，
子项：文本（“编译并发送”），
onPressed：（正在处理）
无效的
：（）异步{
if（_formkey.currentState.validate（））{
试一试{
最终结果=
等待InternetAddress.lookup（'google.com'）；
如果（result.isNotEmpty）&&
结果[0].rawAddress.isNotEmpty）{
等待getCsv（_currentDocument）。然后（（v）{
设置状态（）{
当前进程=
“编写和发送邮件”；
});
sendMailAndAttachment（）。完成时（）{
设置状态（）{
isProcessing=false；
});
_sc