android - 添加 cloud_firebase 包后，我的 Flutter App 没有运行

Question

最近我在我的 flutter 项目中添加了 Firebase。为了使用 firebase 数据库服务，我添加了 cloud_firebase 包。但是在添加这个包之后，我的应用程序没有运行并且给了我一个异常:

BUILD FAILED in 31s
The plugin cloud_firestore requires a higher Android SDK version.
Fix this issue by adding the following to the file C:\Users\Jaguar\Desktop\AppDevelopment\acadmt\android\app\build.gradle:
android {
  defaultConfig {
    minSdkVersion 19
  }
}
Note that your app won't be available to users running Android SDKs below 19.
Alternatively, try to find a version of this plugin that supports these lower versions of the Android SDK.
Exception: Gradle task assembleDebug failed with exit code 1

异常消息还建议以下建议 :

Suggestion: use a compatible library with a minSdk of at most 16,
        or increase this project's minSdk version to at least 19,
        or use tools:overrideLibrary="io.flutter.plugins.firebase.firestore" to force usage (may lead to runtime failures)

我已经尝试了前两个建议，但该应用程序仍然无法正常工作。

Answer 1

将 minSdkVersion 更改为 21 后它将起作用。

defaultConfig {
        minSdkVersion 21
        targetSdkVersion 30
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }