flutter build apk --release 失败，而 flutter build apk -- 调试工作正常答案

【问题标题】：flutter build apk --release fails while flutter build apk -- debug works fineflutter build apk --release 失败，而 flutter build apk -- 调试工作正常
【发布时间】：2019-09-28 20:06:12
【问题描述】：

我需要为我的 Flutter 项目发布一个签名的 apk，但是“flutter build apk --release”命令失败。

“flutter build apk --debug”命令运行良好。我已经使用“颤振医生”检查了设置，一切似乎都很好。我曾尝试使用 flutter clean 清理项目，但没有帮助。

“flutter build apk --debug -v”返回的错误是：

Gradle build failed to produce an Android package.

#0      throwToolExit (package:flutter_tools/src/base/common.dart:24:3)
#1      _buildGradleProjectV2 (package:flutter_tools/src/android/gradle.dart:484:7)
<asynchronous suspension>
#2      buildGradleProject (package:flutter_tools/src/android/gradle.dart:346:14)
<asynchronous suspension>
#3      buildApk (package:flutter_tools/src/android/apk.dart:34:9)
<asynchronous suspension>
#4      BuildApkCommand.runCommand (package:flutter_tools/src/commands/build_apk.dart:51:11)
<asynchronous suspension>
#5      FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:559:18)
#6      _asyncThenWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:77:64)
#7      _rootRunUnary (dart:async/zone.dart:1132:38)
#8      _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#9      _FutureListener.handleValue (dart:async/future_impl.dart:126:18)
#10     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:639:45)
#11     Future._propagateToListeners (dart:async/future_impl.dart:668:32)
#12     Future._complete (dart:async/future_impl.dart:473:7)
#13     _SyncCompleter.complete (dart:async/future_impl.dart:51:12)
#14     _AsyncAwaitCompleter.complete.<anonymous closure> (dart:async-patch/async_patch.dart:33:20)
#15     _rootRun (dart:async/zone.dart:1124:13)
#16     _CustomZone.run (dart:async/zone.dart:1021:19)
#17     _CustomZone.bindCallback.<anonymous closure> (dart:async/zone.dart:947:23)
#18     _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
#19     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
#20     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:115:13)
#21     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:5)

【问题讨论】：

链接到完整输出：pastebin.com/uUt3Eymx

标签： flutter

【解决方案1】：

错误是由于密钥库的密码无效。修复后，构建正确编译。

【讨论】：

【解决方案2】：

根据 Android SDK 文档，您可以根据 sdkmanager 位置使用以下命令：虽然 --licenses 选项的文档似乎丢失了。

yes | sdkmanager --licenses

GNU/Linux 发行版：

yes | ~/Android/Sdk/tools/bin/sdkmanager --licenses

macOS：

导出 JAVA_HOME=/Applications/Android\

Studio.app/Contents/jre/jdk/Contents/Home
yes | ~/Library/Android/sdk/tools/bin/sdkmanager --licenses

Windows：

%ANDROID_HOME%/tools/bin/sdkmanager --licenses

同时运行 Flutter Clean

【讨论】：

【解决方案3】：

如果你已经正确地关注了Signing the app的这个链接，如果你想把它上传到游戏商店，那么下面的命令应该可以正常工作：

flutter build apk --release

如果上述方法不起作用，请尝试使用：

flutter build apk  // this command default creates the release apk, but don't know if you can upload it to play store

【讨论】：

我已经这样做了，问题是构建命令失败。作为说明，我认为“flutter build apk”与“flutter build apk --reslease”完全相同
是的，“flutter build apk”是发布的 apk，但我不确定你是否可以将它上传到 play store。