为什么在尝试将 firebase 添加到 flutter 时会出现此错误“已弃用 API”

如何解决为什么在尝试将 firebase 添加到 flutter 时会出现此错误“已弃用 API”

我在尝试在 Flutter 项目上添加 Firebase 时遇到错误。当我运行应用程序时出现错误：

Launching lib\main.dart on sdk gphone x86 in debug mode...
Note: C:\Flutter\.pub-cache\hosted\pub.dartlang.org\firebase_core- 
 1.0.1\android\src\main\java\io\Flutter\plugins\firebase\core\FlutterFirebaseCorePlugin.java uses or 
  overrides a deprecated API.
  Note: Recompile with -Xlint:deprecation for details.
    Note: C:\Flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore- 
1.0.1\android\src\main\java\io\Flutter\plugins\firebase\firestore\FlutterFirebaseFirestorePlugin.java 
  uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
 Note: C:\Flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore- 1.0.1\android\src\main\java\io\Flutter\plugins\firebase\firestore\streamhandler\TransactionStreamHandler. 
   java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
 Note: C:\Flutter\.pub-cache\hosted\pub.dartlang.org\firebase_auth-  1.0.1\android\src\main\java\io\Flutter\plugins\firebase\auth\FlutterFirebaseAuthPlugin.java uses or 
 overrides a deprecated API.
 Note: Recompile with -Xlint:deprecation for details.
  √ Built build\app\outputs\Flutter-apk\app-debug.apk.
Connecting to VM Service at ws://127.0.0.1:50487/Plr_UpKjauM=/ws

解决方法

这些事情中的一个或它们的组合应该可以解决您的问题

在 android/app/build.grade 文件中将您的构建版本升级到 23
flutter clean
在 android/app/build.grade 中，更新依赖项，例如

dependencies {
    ...
    androidTestImplementation 'androidx.test:runner:1.2.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

在终端中运行 flutter pub upgrade 或从 pubspec.yaml 文件进行 pub 升级
试试这个答案https://stackoverflow.com/a/59531270/13858991

将检查一些已知的修复方法，并在我更新答案时通知您