示例 Hello world flutter 應用程序構建失敗：任務 ':app:mergeDebugResources' 執行失敗

Question

我最近安裝了flutter並嘗試運行由flutter （編輯器VSCode ）創建的example app ，但出現以下錯誤（ build命令也失敗）：

flutter run
Launching lib\main.dart on SM J730F in debug mode...

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:mergeDebugResources'.
> Multiple task action failures occurred:
   > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
      > AAPT2 aapt2-3.5.0-5435860-windows Daemon #1: Daemon startup failed
        This should not happen under normal circumstances, please file an issue if it does.
   > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
      > AAPT2 aapt2-3.5.0-5435860-windows Daemon #6: Daemon startup failed
        This should not happen under normal circumstances, please file an issue if it does.
   > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
      > AAPT2 aapt2-3.5.0-5435860-windows Daemon #0: Daemon startup failed
        This should not happen under normal circumstances, please file an issue if it does.
   > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
      > AAPT2 aapt2-3.5.0-5435860-windows Daemon #3: Daemon startup failed
        This should not happen under normal circumstances, please file an issue if it does.
   > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
      > AAPT2 aapt2-3.5.0-5435860-windows Daemon #4: Daemon startup failed
        This should not happen under normal circumstances, please file an issue if it does.
   > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
      > AAPT2 aapt2-3.5.0-5435860-windows Daemon #2: Daemon startup failed
        This should not happen under normal circumstances, please file an issue if it does.
   > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
      > AAPT2 aapt2-3.5.0-5435860-windows Daemon #5: Daemon startup failed
        This should not happen under normal circumstances, please file an issue if it does.
   > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
      > AAPT2 aapt2-3.5.0-5435860-windows Daemon #7: Daemon startup failed
        This should not happen under normal circumstances, please file an issue if it does.

* 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 29s
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done                        31,2s
Gradle task assembleDebug failed with exit code 1

代碼沒有改變（lib/main.dart）：

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: Column(
          // Column is also a layout widget. It takes a list of children and
          // arranges them vertically. By default, it sizes itself to fit its
          // children horizontally, and tries to be as tall as its parent.
          //
          // Invoke "debug painting" (press "p" in the console, choose the
          // "Toggle Debug Paint" action from the Flutter Inspector in Android
          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
          // to see the wireframe for each widget.
          //
          // Column has various properties to control how it sizes itself and
          // how it positions its children. Here we use mainAxisAlignment to
          // center the children vertically; the main axis here is the vertical
          // axis because Columns are vertical (the cross axis would be
          // horizontal).
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.display1,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}

./android/build.gradle:

buildscript {
    ext.kotlin_version = '1.3.50'
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

./android/app/build.gradle：

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 28

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "pl.my.app-phrog"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
}

./android/gradle.properties:

org.gradle.jvmargs=-Xmx4608M
android.enableR8=true
android.useAndroidX=true
android.enableJetifier=true

顫振醫生：

[√] Flutter (Channel stable, v1.12.13+hotfix.5, on Microsoft Windows [Version 10.0.17134.1069], locale pl-PL)
    • Flutter version 1.12.13+hotfix.5 at (...)
    • Framework revision 27321ebbad (4 weeks ago), 2019-12-10 18:15:01 -0800
    • Engine revision 2994f7e1e6
    • Dart version 2.7.0


[√] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    • Android SDK at (...)
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-29, build-tools 29.0.2
    • ANDROID_HOME = (...)
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
    • All Android licenses accepted.

[√] Android Studio (version 3.5)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 42.1.1
    • Dart plugin version 191.8593
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

[√] VS Code (version 1.41.1)
    • VS Code at (...)
    • Flutter extension version 3.7.1

[√] Connected device (1 available)
    • SM J730F • android-arm • Android 9 (API 28)

• No issues found!

Gradle 堆棧跟蹤：

#0      throwToolExit (package:flutter_tools/src/base/common.dart:28:3)
#1      buildGradleApp (package:flutter_tools/src/android/gradle.dart:431:7)
#2      _asyncThenWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:73:64)
#3      _rootRunUnary (dart:async/zone.dart:1134:38)
#4      _CustomZone.runUnary (dart:async/zone.dart:1031:19)
#5      _FutureListener.handleValue (dart:async/future_impl.dart:139:18)
#6      Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:680:45)
#7      Future._propagateToListeners (dart:async/future_impl.dart:709:32)
#8      Future._completeWithValue (dart:async/future_impl.dart:524:5)
#9      Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:554:7)
#10     _rootRun (dart:async/zone.dart:1126:13)
#11     _CustomZone.run (dart:async/zone.dart:1023:19)
#12     _CustomZone.runGuarded (dart:async/zone.dart:925:7)
#13     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:965:23)
#14     _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
#15     _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)
#16     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
#17     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:175:5)

編輯：我已經使用詳細選項運行命令：

$ flutter run -v
[  +63 ms] executing: [...\flutter\] git -c log.showSignature=false log -n 1 --pretty=format:%H
[ +264 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
[   +4 ms] 27321ebbad34b0a3fafe99fac037102196d655ff
[   +1 ms] executing: [...\flutter\] git describe --match v*.*.* --first-parent --long --tags
[ +231 ms] Exit code 0 from: git describe --match v*.*.* --first-parent --long --tags
[        ] v1.12.13+hotfix.5-0-g27321ebba
[  +13 ms] executing: [...\flutter\] git rev-parse --abbrev-ref --symbolic @{u}
[ +213 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[   +1 ms] origin/stable
[   +1 ms] executing: [...\flutter\] git ls-remote --get-url origin
[ +210 ms] Exit code 0 from: git ls-remote --get-url origin
[   +1 ms] https://github.com/flutter/flutter.git
[ +294 ms] executing: [...\flutter\] git rev-parse --abbrev-ref HEAD
[ +219 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[   +1 ms] stable
[ +232 ms] executing: ...\Android\Sdk\platform-tools\adb.exe devices -l
[ +112 ms] Exit code 0 from: ...\Android\Sdk\platform-tools\adb.exe devices -l
[   +1 ms] List of devices attached
           52009f78e2ae3433       device product:j7y17ltexx model:SM_J730F device:j7y17lte transport_id:6
[  +34 ms] ...\Android\Sdk\platform-tools\adb.exe -s 52009f78e2ae3433 shell getprop
[ +228 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
[  +28 ms] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[   +1 ms] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[   +1 ms] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[   +9 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[   +1 ms] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +903 ms] Generating ...\hello_world_flutter\new_hello_flutter\android\app\src\main\java\io\flutter\plugins\GeneratedPluginRegistrant.java
[ +111 ms] ro.hardware = samsungexynos7870
[ +140 ms] Launching lib\main.dart on SM J730F in debug mode...
[  +28 ms] executing: ...\Android\Sdk\platform-tools\adb.exe -s 52009f78e2ae3433 shell -x logcat -v time -s flutter
[  +13 ms] executing: ...\Android\Sdk\platform-tools\adb.exe version
[ +158 ms] Android Debug Bridge version 1.0.41
                    Version 29.0.5-5949299
                    Installed as ...\Android\Sdk\platform-tools\adb.exe
[   +5 ms] executing: ...\Android\Sdk\platform-tools\adb.exe start-server
[ +120 ms] Building APK
[  +42 ms] Running Gradle task 'assembleDebug'...
[   +5 ms] gradle.properties already sets `android.enableR8`
[  +10 ms] Using gradle from ...\hello_world_flutter\new_hello_flutter\android\gradlew.bat.
[  +35 ms] executing: C:\Program Files\Android\Android Studio\jre\bin\java -version
[ +784 ms] Exit code 0 from: C:\Program Files\Android\Android Studio\jre\bin\java -version
[   +1 ms] openjdk version "1.8.0_202-release"
           OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
           OpenJDK 64-Bit Server VM (build 25.202-b03, mixed mode)
[   +8 ms] executing: [...\hello_world_flutter\new_hello_flutter\android\] ...\hello_world_flutter\new_hello_flutter\android\gradlew.bat
-Pverbose=true -Ptarget=...\hello_world_flutter\new_hello_flutter\lib\main.dart -Ptrack-widget-creation=true -Pfilesystem-scheme=org-dartlang-root
-Ptarget-platform=android-arm assembleDebug
[+5300 ms] Starting a Gradle Daemon (subsequent builds will be faster)
[+33942 ms] > Task :app:compileFlutterBuildDebug
[   +2 ms] [  +52 ms] executing: [...\flutter\] git -c log.showSignature=false log -n 1 --pretty=format:%H
[ +295 ms] [ +277 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
[   +1 ms] [   +2 ms] 27321ebbad34b0a3fafe99fac037102196d655ff
[   +1 ms] [        ] executing: [...\flutter\] git describe --match v*.*.* --first-parent --long --tags
[ +196 ms] [ +232 ms] Exit code 0 from: git describe --match v*.*.* --first-parent --long --tags
[   +1 ms] [        ] v1.12.13+hotfix.5-0-g27321ebba
[   +1 ms] [  +15 ms] executing: [...\flutter\] git rev-parse --abbrev-ref --symbolic @{u}
[ +196 ms] [ +228 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[   +1 ms] [        ] origin/stable
[   +1 ms] [        ] executing: [...\flutter\] git ls-remote --get-url origin
[ +309 ms] [ +214 ms] Exit code 0 from: git ls-remote --get-url origin
[   +3 ms] [        ] https://github.com/flutter/flutter.git
[ +285 ms] [ +369 ms] executing: [...\flutter\] git rev-parse --abbrev-ref HEAD
[ +300 ms] [ +238 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[   +1 ms] [        ] stable
[   +1 ms] [  +47 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
[   +1 ms] [        ] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[   +1 ms] [        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[   +2 ms] [        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[   +1 ms] [        ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[   +1 ms] [   +9 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[   +1 ms] [        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[   +1 ms] [        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[   +1 ms] [        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[   +1 ms] [        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[   +1 ms] [        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[   +1 ms] [        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +181 ms] [ +187 ms] Initializing file store
[ +100 ms] [  +61 ms] Done initializing file store
[+2999 ms] [+3011 ms] Skipping target: kernel_snapshot
[ +199 ms] [ +173 ms] debug_android_application: Starting due to {InvalidatedReason.outputMissing}
[ +799 ms] [ +841 ms] debug_android_application: Complete
[   +1 ms] [  +35 ms] Persisting file store
[  +98 ms] [  +26 ms] Done persisting file store
[   +1 ms] [   +7 ms] build succeeded.
[   +1 ms] [  +29 ms] "flutter assemble" took 4 670ms.
[ +315 ms] > Task :app:packLibsflutterBuildDebug UP-TO-DATE
[   +3 ms] > Task :app:preBuild UP-TO-DATE
[   +3 ms] > Task :app:preDebugBuild UP-TO-DATE
[  +74 ms] > Task :app:checkDebugManifest UP-TO-DATE
[ +124 ms] > Task :app:generateDebugBuildConfig UP-TO-DATE
[   +3 ms] > Task :app:compileDebugAidl NO-SOURCE
[   +1 ms] > Task :app:compileDebugRenderscript NO-SOURCE
[ +170 ms] > Task :app:cleanMergeDebugAssets
[   +2 ms] > Task :app:mergeDebugShaders UP-TO-DATE
[  +96 ms] > Task :app:compileDebugShaders UP-TO-DATE
[   +1 ms] > Task :app:generateDebugAssets UP-TO-DATE
[  +98 ms] > Task :app:mergeDebugAssets
[ +628 ms] > Task :app:copyFlutterAssetsDebug
[  +15 ms] > Task :app:mainApkListPersistenceDebug UP-TO-DATE
[   +1 ms] > Task :app:generateDebugResValues UP-TO-DATE
[   +1 ms] > Task :app:generateDebugResources UP-TO-DATE
[+4174 ms] > Task :app:createDebugCompatibleScreenManifests UP-TO-DATE
[ +208 ms] > Task :app:processDebugManifest UP-TO-DATE
[ +369 ms] > Task :app:mergeDebugResources FAILED
[ +103 ms] FAILURE: Build failed with an exception.
[   +9 ms] * What went wrong:
[   +2 ms] Execution failed for task ':app:mergeDebugResources'.
[   +2 ms] > Multiple task action failures occurred:
[   +2 ms]    > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
[   +2 ms]       > AAPT2 aapt2-3.5.2-5435860-windows Daemon #1: Daemon startup failed
[   +1 ms]         This should not happen under normal circumstances, please file an issue if it does.
[   +2 ms]    > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
[   +1 ms]       > AAPT2 aapt2-3.5.2-5435860-windows Daemon #4: Daemon startup failed
[   +2 ms]         This should not happen under normal circumstances, please file an issue if it does.
[   +3 ms]    > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
[   +2 ms]       > AAPT2 aapt2-3.5.2-5435860-windows Daemon #3: Daemon startup failed
[   +4 ms]         This should not happen under normal circumstances, please file an issue if it does.
[   +2 ms]    > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
[   +8 ms]       > AAPT2 aapt2-3.5.2-5435860-windows Daemon #5: Daemon startup failed
[  +21 ms]         This should not happen under normal circumstances, please file an issue if it does.
[  +18 ms]    > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
[  +33 ms]       > AAPT2 aapt2-3.5.2-5435860-windows Daemon #6: Daemon startup failed
[  +10 ms]         This should not happen under normal circumstances, please file an issue if it does.
[   +2 ms]    > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
[   +2 ms]       > AAPT2 aapt2-3.5.2-5435860-windows Daemon #0: Daemon startup failed
[  +17 ms]         This should not happen under normal circumstances, please file an issue if it does.
[  +12 ms]    > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
[  +28 ms]       > AAPT2 aapt2-3.5.2-5435860-windows Daemon #2: Daemon startup failed
[   +4 ms]         This should not happen under normal circumstances, please file an issue if it does.
[   +4 ms]    > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
[  +20 ms]       > AAPT2 aapt2-3.5.2-5435860-windows Daemon #7: Daemon startup failed
[   +4 ms]         This should not happen under normal circumstances, please file an issue if it does.
[   +3 ms] * Try:
[   +3 ms] 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.
[   +8 ms] * Get more help at https://help.gradle.org
[   +8 ms] BUILD FAILED in 51s
[   +1 ms] 14 actionable tasks: 5 executed, 9 up-to-date
[ +616 ms] Running Gradle task 'assembleDebug'... (completed in 53,3s)
[  +15 ms] "flutter run" took 55 781ms.
Gradle task assembleDebug failed with exit code 1

編輯 2：我已經為 x64 和 ARM 安裝了 VC redist（最新的 2019）。 重啟后依然出現錯誤： https : //pastebin.com/2Jiea3wq

編輯 3：在沒有快速啟動的情況下重新啟動后，我已經完成了flutter clean和flutter build apk -v並且出現了相同的錯誤，但我看到了這個（pastebin 中的第 87 行）：

invalidated build due to missing files: .\flutter\bin\cache\artifacts\engine\android-arm-release\windows-x64\gen_snapshot

這是個問題嗎？ 完整日志： https : //pastebin.com/vYvLzStv

Answer 1

android-arm64-release用於發布版本，而mergeDebugResources是來自調試版本的任務。 如果任何日志會很有趣，那就是（當它無法啟動 AAPT2 時，這可能與其他日志一樣無意義）：

gradlew.bat --stacktrace assembleDebug

• 當AAPT2失敗，任務mergeDebugResources ，也許是資源有過錯。

• 當 AAPT2 無法啟動時，那可能是UCRT ...但aapt2是一個 JAR。

• 在 Windows GRADLE_USER_HOME設置為環境變量。

即使選項 #1 不太可能用於某些“hello world”程序......我建議嘗試構建一個常規的 Android 項目......只是為了擺脫所有 Flutter 復雜性，以便查看 AAPT2 是否甚至啟動。

Answer 2

通常這意味着您缺少 windows 通用 C 運行時庫。 但是，由於您聲明您使用的是 Windows 10，因此您的系統似乎由於某種原因缺少這個 C 運行時庫，即使它應該已經安裝（或在更新中）。 您可以通過從此處安裝 Microsoft Visual C++ Redistributable for Visual Studio（當前 2019）來獲取此缺少的庫。

Answer 3

最后我知道是什么導致了問題：在其他地方運行程序是有限制的，然后是Program Files ， Program Data等。 在Android Studio示例項目中設置並flutter run -v我看到了錯誤消息：

this program is blocked by group policy. for more information contact your system administrator

我已經在管理控制台中運行了flutter run -v並且它起作用了。 我認為gradle嘗試在c:\\users\\<user>\\.gradle下載並運行某c:\\users\\<user>\\.gradle - 有誰知道如何解決這個問題？