我正在嘗試遵循有關 fireflutter 的教程https://firebase.flutter.dev/docs/database/usage
沒有為“FirebaseDatabase”型別定義方法“ref”
我做錯了什么？任何幫助將不勝感激
我已經添加了資料庫包
import 'package:firebase_database/firebase_database.dart';
我的 pubyaml 依賴項如下：
dependencies:
cloud_firestore: ^2.5.1
cupertino_icons: ^1.0.2
firebase_auth: ^3.1.0
firebase_core: ^1.6.0
firebase_database: ^7.0.0
我的應用構建 Gradle 依賴項
dependencies {
implementation platform('com.google.firebase:firebase-bom:28.4.0')
implementation 'com.google.firebase:firebase-database'
implementation 'com.google.firebase:firebase-database'
implementation 'com.google.firebase:firebase-storage'
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.android.support:multidex:1.0.3'
}
代碼如下：
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:firebase_database/firebase_database.dart';
import 'package:trackkit/model/user_model.dart';
import 'package:trackkit/LoginSignup/home_screen.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
class AddItem extends StatelessWidget{
AddItem({Key? key}) : super(key: key);
final FirebaseDatabase database = FirebaseDatabase.instance;
@override
Widget build(BuildContext context){
DatabaseReference location = FirebaseDatabase.instance.ref("Location 1"); //I am having problem with this line
// final location = database.child("Location 1");
return Scaffold(
body:Column(
children: [
TextFormField(
decoration: const InputDecoration(
border: UnderlineInputBorder(),
labelText: 'Product name',
),
),
ElevatedButton(
child: const Text('Save'),
onPressed: () async {
await location
.push()
.set({"hello"});
},
),
],
),
);
}
}
uj5u.com熱心網友回復：
ref不支持firebase_database: ^7.0.0
利用FirebaseDatabase.instance.reference().child("Location 1");
轉載請註明出處，本文鏈接：https://www.uj5u.com/shujuku/425714.html
標籤：火力基地 扑 firebase-实时数据库