添加 cloud_firebase 包后我的 Flutter 应用程序未运行

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。但添加此包后，我的应用程序未运行并给了我一个例外：

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

异常消息还提出以下建议：

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运行。

Answer 1

在project_folder/android/app/build.gradle 中将 minSdkVersion 更改为 21 后它将起作用。

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

Answer 2

对于Flutter 2.8更新后创建的项目

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1. 将其添加到project_folder/android/local.properties

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   flutter.minSdkVersion=21

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2. 现在更新您的project_folder/android/app/build.gradle

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   defaultConfig { minSdkVersion localProperties.getProperty(\'flutter.minSdkVersion\').toInteger() }

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3. 跑步flutter clean && flutter pub get

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4. 重新运行应用程序

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参考：更改 Flutter\xe2\x80\x8a \xe2\x80\x93 \xe2\x80\x8a2 中的 Android Minsdkversion Easy Ways [2022]

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