android - Flutter -Firebase/FireStore - 无法到达 Cloud Firestore 后端。后端在 10 秒内没有响应

Question

我目前正在 VSCode 中开发一个 Flutter 项目，使用 firestore 作为我的数据库。我已经在这个项目上工作了好几个月，并且以任何方式连接到 firestore 都没有遇到任何问题。最近我得到了新的硬盘驱动器并传输了所有文件，并且一切都正确编译。我已经更新了所有依赖项，Flutter Doctor 没有任何问题，并且我在以前的帖子中搜索了几个小时，尝试了几乎所有解决方案，但都没有奏效。

在工作和不工作之间，我没有更改我的任何代码。我已经更改了许多设置和配置文件，试图让它现在工作。

两个重要提示

1. 我正在通过 Android Studio 试用模拟器。我试过 3 种不同的模拟器。
   • 1 安装了 google play 服务
   • 1 没有安装 google play 服务
   • 1 没有安装 google play 服务，是我手动添加的

他们都有同样的问题。

1. 我在许多当前成功访问数据库的设备上运行旧版本。

我收到错误

W/DynamiteModule( 6511): Local module descriptor class for com.google.android.gms.providerinstaller.dynamite not found.
I/DynamiteModule( 6511): Considering local module com.google.android.gms.providerinstaller.dynamite:0 and remote module com.google.android.gms.providerinstaller.dynamite:0
W/ProviderInstaller( 6511): Failed to load providerinstaller module: No acceptable module com.google.android.gms.providerinstaller.dynamite found. Local version is 0 and remote version is 0.
W/ProviderInstaller( 6511): Failed to report request stats: com.google.android.gms.common.security.ProviderInstallerImpl.reportRequestStats [class android.content.Context, long, long]
W/Firestore( 6511): (24.2.2) [OnlineStateTracker]: Could not reach Cloud Firestore backend. Backend didn't respond within 10 seconds
W/Firestore( 6511):
W/Firestore( 6511): This typically indicates that your device does not have a healthy Internet connection at the moment. The client will operate in offline mode until it is able to successfully connect to the backend.
W/DynamiteModule( 6511): Local module descriptor class for com.google.android.gms.providerinstaller.dynamite not found.
W/Firestore( 6511): (24.2.2) [WatchStream]: (4aed552) Stream closed with status: Status{code=UNAVAILABLE, description=Channel shutdownNow invoked, cause=null}.
I/DynamiteModule( 6511): Considering local module com.google.android.gms.providerinstaller.dynamite:0 and remote module com.google.android.gms.providerinstaller.dynamite:0
W/ProviderInstaller( 6511): Failed to load providerinstaller module: No acceptable module com.google.android.gms.providerinstaller.dynamite found. Local version is 0 and remote version is 0.
W/ProviderInstaller( 6511): Failed to report request stats: com.google.android.gms.common.security.ProviderInstallerImpl.reportRequestStats [class android.content.Context, long, long]

我从其他论坛帖子中尝试过的步骤:

1. 放入所有 3 个 AndroidManifest.xml 文件
2. 在main下放入AndroidManifest.xml
3. 启用 Multidex
4. 使用了不同的 wifi 连接
5. 第二天再次查看同样的问题
6. 我的最低 SDK 版本是 21
7. 所有模拟器都有 wifi 连接。 (我通过网上搜索测试过)
8. 其他不记得了

flutter 医生:

[√] Flutter (Channel stable, 3.3.0, on Microsoft Windows [Version 10.0.19044.1889], locale en-US)
    • Flutter version 3.3.0 on channel stable at D:\Coding\Flutter\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision ffccd96b62 (2 days ago), 2022-08-29 17:28:57 -0700
    • Engine revision 5e9e0e0aa8
    • Dart version 2.18.0
    • DevTools version 2.15.0

[√] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
    • Android SDK at C:\Users\mjdk9\AppData\Local\Android\sdk
    • Platform android-33, build-tools 33.0.0
    • Java binary at: D:\Applications\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.3.3)
    • Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
    • Visual Studio Community 2022 version 17.3.32825.248
    • Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 2021.2)
    • Android Studio at D:\Applications\Android Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840)

[√] Connected device (4 available)
    • sdk gphone x86 (mobile) • emulator-5554 • android-x86    • Android 11 (API 30) (emulator)
    • Windows (desktop)       • windows       • windows-x64    • Microsoft Windows [Version 10.0.19044.1889]
    • Chrome (web)            • chrome        • web-javascript • Google Chrome 104.0.5112.102
    • Edge (web)              • edge          • web-javascript • Microsoft Edge 104.0.1293.70

[√] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

pubspec.yaml 依赖项

dependencies:
  flutter:
    sdk: flutter


  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.2
  firebase_core: ^1.4.0
  firebase_auth: ^3.0.1
  cloud_firestore: ^3.4.6
  firebase_analytics: ^9.3.3
  material_floating_search_bar: ^0.3.4
  provider: ^6.0.3
  flutter_launcher_icons: ^0.10.0
  url_launcher: ^6.0.10
  url_launcher_web: ^2.0.4
  flutter_rating_bar: ^4.0.0
  smooth_star_rating: ^1.1.1
  dropdown_button2: ^1.0.7
  confetti: ^0.7.0
  flutter_native_splash: ^2.1.6
  http: ^0.13.4
  get: ^4.6.1
  audioplayers: ^1.0.1
  loader_overlay: ^2.0.6
  webview_flutter: ^3.0.2
  syncfusion_flutter_datagrid: ^20.1.61
  cloud_functions: ^3.2.17

app/build.gradle

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
apply plugin: 'com.google.gms.google-services'

defaultConfig {
        multiDexEnabled true
        applicationId "com.mjdk99.matter_medical_supplies"
        minSdkVersion 21
        targetSdkVersion 30
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation platform('com.google.firebase:firebase-bom:30.3.2')
    implementation 'com.google.firebase:firebase-analytics'
    implementation 'com.google.android.gms:play-services-location:18.0.0'
}

build.gradle

buildscript {
    ext.kotlin_version = '1.6.10'
    repositories {
        google()
        mavenCentral()
        jcenter()
    }

    dependencies {
        classpath 'com.google.gms:google-services:4.3.13'
        classpath 'com.android.tools.build:gradle:4.1.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        google()
        mavenCentral()
        jcenter()
    }
}

Answer 1

现在我也遇到了这个问题，安卓模拟器没有连接到我的 firebase，但我的物理设备没有问题。但是，我可以使用同一个项目，但使用 Firebase 模拟器套件而不是我的数据库。

可能无法解决您的问题，但至少在您解决问题之前它是一种解决方法。