flutter build apk --release 命令不起作用

Question

TYSONs-MacBook-Air:chats jeshurun$ flutter build apk --release
You are building a fat APK that includes binaries for android-arm, android-arm64, android-x64.
 If you are deploying the app to the Play Store, it's recommended to use app bundles or split the APK to reduce the APK size.
To generate an app bundle, run:
    flutter build appbundle --target-platform android-arm,android-arm64,android-x64
    Learn more on: https://developer.android.com/guide/app-bundle
To split the APKs per ABI, run:
    flutter build apk --target-platform android-arm,android-arm64,android-x64 --split-per-abi
    Learn more on:  https://developer.android.com/studio/build/configure-apk-splits#configure-abi-split
 Plugin project :firebase_core_web not found. Please update settings.gradle.
 Plugin project :cloud_firestore_web not found. Please update settings.gradle.

FAILURE: Build failed with an exception.                                

* What went wrong:                                                      
Execution failed for task ':device_info:verifyReleaseResources'.        
> A failure occurred while executing 
com.android.build.gradle.internal.tasks.Workers$ActionFacade
> 1 exception was raised by workers:                                 
 com.android.builder.internal.aapt.v2.Aapt2Exception: Android resource linking failed
 /Users/jeshurun/.gradle/caches/transforms-2/files-2.1/8caf43a43008a17794fe6e0dd5ac61b7/core-1.1.0/res/values/values.xml:142:5-173:25: AAPT: error: resource android:attr/fontVariationSettings not found.

 /Users/jeshurun/.gradle/caches/transforms-2/files-2.1/8caf43a43008a17794fe6e0dd5ac61b7/core-1.1.0/res/values/values.xml:142:5-173:25: AAPT: error: resource android:attr/ttcIndex not found.



* Try:                                                                  
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org                              

BUILD FAILED in 14s                                                     
Running Gradle task 'assembleRelease'...                                
Running Gradle task 'assembleRelease'... Done                      15.6s
The built failed likely due to AndroidX incompatibilities in a plugin. 
The tool is about to try using Jetfier to solve the incompatibility.
Building plugin agora_rtc_engine...
Running Gradle task 'assembleAarRelease'...                             
Running Gradle task 'assembleAarRelease'... Done                    1.7s


FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':compileReleaseAidl'.
> SDK location not found. Define location with an ANDROID_SDK_ROOT environment variable or by setting the sdk.dir path in your project's local properties file at '/Users/jeshurun/flutter/.pub-cache/hosted/pub.dartlang.org/agora_rtc_engine-1.0.12/android/local.properties'.

• 尝试： 使用 --stacktrace 选项运行以获取堆栈跟踪。使用 --info 或 --debug 选项运行以获得更多日志输出。运行 --scan 以获得完整的见解。

• 通过https://help.gradle.org获得更多帮助

1 秒内构建失败

由于上述问题，插件 agora_rtc_engine 无法构建。

Answer 1

首先，flutter build apk 默认使用参数--release。

接下来，您可能正在应用中使用 AndroidX 包，但您的应用并未迁移到使用 AndroidX。确保：

在应用或模块项目中，文件 android/gradle.properties 或 .android/gradle.properties 必须包含：

android.useAndroidX=true
android.enableJetifier=true

否则可能是因为您的compileSdkVersion 低于28，

尝试将compileSdkVersion 28 或29 设置为app/build.gradle。如果这不能解决您的问题，则可能是您的插件之一是问题所在。当然，您可以编辑您的插件构建 gradle，但我不建议这样做。

首先，尝试升级未更新的软件包。如果没有升级这些包，你可以通过在 android studio 中打开 flutter root android 目录来跟随下面的操作。

步骤：

1. 转到外部库
2. 找到提出问题的库
3. 打开它的 app/build.gradle
4. 将 compileSdkVersion 更新为 28 或 29

您还可以克隆导致问题的软件包并执行上述操作并将其推送到 github 和 pubspec.yaml 中，从 github 访问如下：

dependencies:
  #...
  repo_name:
    git:
      url: git://github.com/your_github/repo_name.git

如果它们都不起作用，值得尝试以下选项：D，

1. Flutter clean / 删除构建文件夹
2. 已删除 pubspec.lock、.packages、.flutter-plugins
3. Flutter pub 缓存修复
4. 确保 app/build.gradle 中的 compileSdkVersion 为 28
5. 最后，尝试删除flutter/.pub-cache

Answer 2

在 android build.gradle 文件中尝试将 compileSdkVersion 更改为：compileSdkVersion 28