将值从flutter发送到实时数据库firebase
将值从flutter发送到实时数据库firebase
提问于 2021-05-16 21:32:26
当我单击onPressed时，我想发送一个特定值0或1。
下面是我的代码：
openGatePhoto() async {
await Firebase.initializeApp();
DatabaseReference referenceData =
FirebaseDatabase.instance.reference().child("picture_has_changed");
var picture_has_changed;
if (picture_has_changed == 0) {
picture_has_changed = 1;
} else {
picture_has_changed = 0;
}尝试导入程序包import 'package:firebase_database/firebase_database.dart';时发生以下错误：
Target of URI doesn't exist: 'package:firebase_database/firebase_database.dart'.它显示了我查找过Undefined class 'DatabaseReference'和Undefined name 'FirebaseDatabase'.，它说这可能是因为我的镜像核心和firebase存储的版本，以及当我试图更新它们时
firebase_core : ^1.0.0
image_picker: ^0.6.2
firebase_storage: ^8.0.0发生此错误：
Because firebase_storage >=8.0.0 <8.0.1 depends on firebase_storage_web ^1.0.0 and firebase_storage >=8.0.1 <8.0.2 depends on firebase_storage_web ^1.0.2, firebase_storage >=8.0.0 <8.0.2 requires firebase_storage_web ^1.0.0.
And because firebase_storage >=8.0.2 <8.0.4 depends on firebase_storage_web ^1.0.3, firebase_storage >=8.0.0 <8.0.4 requires firebase_storage_web ^1.0.0.
And because firebase_storage >=8.0.4 <8.0.5 depends on firebase_storage_web ^1.0.4 and firebase_storage >=8.0.5 <8.0.6 depends on firebase_storage_web ^1.0.5, firebase_storage >=8.0.0 <8.0.6 requires firebase_storage_web ^1.0.0.
And because firebase_storage >=8.0.6 depends on firebase_storage_web ^1.0.6 which depends on http ^0.13.0, firebase_storage >=8.0.0 requires http ^0.13.0.
So, because LPP depends on both http ^0.12.0+2 and firebase_storage ^8.0.0, version solving failed.
pub get failed (1; So, because LPP depends on both http ^0.12.0+2 and firebase_storage ^8.0.0, version solving failed.)我只想做的是，当你按下按钮时，它会将0或1发送到firebase上的实时数据库。有没有比我试过的更简单的方法。提前感谢:D
回答 1
Stack Overflow用户
发布于 2021-05-16 22:03:40
你必须确保你所有的包是相互兼容的。以下是最新的兼容版本：
cloud_firestore ^0.16.0+1
cloud_functions ^0.9.0
firebase_auth ^0.20.1
firebase_core ^0.7.0
firebase_crashlytics ^0.4.0+1
firebase_storage ^7.0.0
firebase_messaging ^8.0.0-dev.15
firebase_remote_config ^0.8.0-dev.0页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/67557292
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