我刚刚更新了一些 flutter 包。但是，我在执行 flutter run 时不断收到此错误。如果我将 apk 直接安装到设备上，它工作正常(这意味着我可以做 flutter build apk)，但是，在 Debug模式下看到时运气不好。

我最初发布这个时遇到了 multidex 问题，我想我通过在 build.gradle 中将 gradle 地址更新为 4.3.zip 来解决这个问题。但是，现在我遇到了以下问题。

如有任何帮助，我们将不胜感激。

Remos-MBP:tu_chat remobajwa$ flutter run --debug
Launching lib/main.dart on B1 7A0 in debug mode...
Initializing gradle...                                       1.1s
Resolving dependencies...                                    3.4s
Gradle task 'assembleDebug'...
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
Note: /Users/remobajwa/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.7.0/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: /Users/remobajwa/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_core-0.2.5+1/android/src/main/java/io/flutter/plugins/firebase/core/FirebaseCorePlugin.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: /Users/remobajwa/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_messaging-2.2.0+1/android/src/main/java/io/flutter/plugins/firebasemessaging/FlutterFirebaseInstanceIDService.java usesor overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: /Users/remobajwa/flutter/.pub-cache/hosted/pub.dartlang.org/video_player-0.10.0+2/android/src/main/java/io/flutter/plugins/videoplayer/VideoPlayerPlugin.java uses or overrides a deprecatedAPI.
Note: Recompile with -Xlint:deprecation for details.
/Users/remobajwa/.gradle/caches/transforms-1/files-1.1/appcompat-1.0.0-beta01.aar/648ac0c7d224ac70bb13139042d8a76b/res/values-v28/values-v28.xml:9:5-12:13: AAPT: error: resource android:attr/dialogCornerRadius not found.

/Users/remobajwa/Desktop/tu_chat/build/app/intermediates/incremental/mergeDebugResources/merged.dir/values-v28/values-v28.xml:11: AAPT: error: resource android:attr/dialogCornerRadius not found.

/Users/remobajwa/.gradle/caches/transforms-1/files-1.1/appcompat-1.0.0-beta01.aar/648ac0c7d224ac70bb13139042d8a76b/res/values/values.xml:1304:5-69: AAPT: error: resource android:attr/fontVariationSettings not found.

/Users/remobajwa/.gradle/caches/transforms-1/files-1.1/appcompat-1.0.0-beta01.aar/648ac0c7d224ac70bb13139042d8a76b/res/values/values.xml:1304:5-69: AAPT: error: resource android:attr/ttcIndex not found.

/Users/remobajwa/Desktop/tu_chat/build/app/intermediates/incremental/mergeDebugResources/merged.dir/values-v28/values-v28.xml:7: error: resource android:attr/dialogCornerRadius not found.
/Users/remobajwa/Desktop/tu_chat/build/app/intermediates/incremental/mergeDebugResources/merged.dir/values-v28/values-v28.xml:11: error: resource android:attr/dialogCornerRadius not found.
/Users/remobajwa/Desktop/tu_chat/build/app/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:237: error: resource android:attr/fontVariationSettings not found.
/Users/remobajwa/Desktop/tu_chat/build/app/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:237: error: resource android:attr/ttcIndex not found.
error: failed linking references.

Failed to execute aapt
com.android.ide.common.process.ProcessException: Failed to execute aapt
        at com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:796)
        at com.android.build.gradle.tasks.ProcessAndroidResources.invokeAaptForSplit(ProcessAndroidResources.java:551)
        at com.android.build.gradle.tasks.ProcessAndroidResources.doFullTaskAction(ProcessAndroidResources.java:285)
        at com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.java:109)
        at sun.reflect.GeneratedMethodAccessor406.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
        at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:46)
        at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)
        at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:121)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:110)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
        at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
        at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62)
        at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
        at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:60)
        at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97)
        at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:87)
        at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52)
        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
        at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
        at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
        at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241)
        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:626)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:581)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
        at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:503)
        at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:482)
        at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:79)
        at com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:794)
        ... 49 more
Caused by: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
        at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:503)
        at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:462)
        at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:79)
        at com.android.builder.internal.aapt.v2.QueueableAapt2.lambda$makeValidatedPackage$1(QueueableAapt2.java:179)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        ... 1 more
Caused by: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
        at com.android.builder.png.AaptProcess$NotifierProcessOutput.handleOutput(AaptProcess.java:463)
        at com.android.builder.png.AaptProcess$NotifierProcessOutput.err(AaptProcess.java:415)
        at com.android.builder.png.AaptProcess$ProcessOutputFacade.err(AaptProcess.java:332)
        at com.android.utils.GrabProcessOutput$1.run(GrabProcessOutput.java:104)
     *********************************************************
WARNING: This version of google_maps_flutter will break your Android build if it or its dependencies aren't compatible with AndroidX.
         See for more information on the problem and how to fix it.
         This warning prints for all Android build failures. The real root cause of the error may be unrelated.
         *********************************************************

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugResources'.
> Failed to execute aapt

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

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

BUILD FAILED in 25s

Gradle task 'assembleDebug'... Done                         26.0s
Gradle task assembleDebug failed with exit code 1

这是我的 flutter doctor 输出

Remos-MBP:tu_chat remobajwa$ flutter doctor -v
[✓] Flutter (Channel beta, v1.0.0, on Mac OS X 10.14 18A391, locale en-CA)
    • Flutter version 1.0.0 at /Users/remobajwa/flutter
    • Framework revision 5391447fae (3 months ago), 2018-11-29 19:41:26 -0800
    • Engine revision 7375a0f414
    • Dart version 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)

[✓] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    • Android SDK at /Users/remobajwa/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
    • All Android licenses accepted.

[!] iOS toolchain - develop for iOS devices (Xcode 10.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.1, Build version 10B61
    ✗ Verify that all connected devices have been paired with this computer in Xcode.
      If all devices have been paired, libimobiledevice and ideviceinstaller may require updating.
      To update with Brew, run:
        brew update
        brew uninstall --ignore-dependencies libimobiledevice
        brew uninstall --ignore-dependencies usbmuxd
        brew install --HEAD usbmuxd
        brew unlink usbmuxd
        brew link usbmuxd
        brew install --HEAD libimobiledevice
        brew install ideviceinstaller
    • ios-deploy 1.9.4
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

[✓] Connected device (1 available)
    • B1 7A0 • 841023849815 • android-arm64 • Android 7.0 (API 24)

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 from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

    def keystoreProperties = new Properties()
    def keystorePropertiesFile = rootProject.file('key.properties')
    if (keystorePropertiesFile.exists()) {
        keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
    }

    android {
        compileSdkVersion 27
        compileOptions {
            sourceCompatibility 1.8
            targetCompatibility 1.8
        }
        lintOptions {
            disable 'InvalidPackage'
            checkReleaseBuilds false
        }

        defaultConfig {
            // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
            applicationId "tuchat.com"
            minSdkVersion 21
            targetSdkVersion 27
            versionCode 16      // matching ios version
            versionName flutterVersionName
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
            multiDexEnabled true
        }

    signingConfigs {
        release {
            keyAlias keystoreProperties['keyAlias']
            keyPassword keystoreProperties['keyPassword']
            storeFile file(keystoreProperties['storeFile'])
            storePassword keystoreProperties['storePassword']
        }
    }

        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.release

                // minifyEnabled true
                useProguard true

                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

            }
        }
    }

    flutter {
        source '../..'
    }

    dependencies {
        testImplementation 'junit:junit:4.12'
        androidTestImplementation 'com.android.support.test:runner:1.0.1'
        androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    }

    apply plugin: 'com.google.gms.google-services'

android/build.gradle

buildscript {
    repositories {
        google()
        mavenCentral()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
        classpath 'com.google.gms:google-services:3.2.0'
    }
}

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

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

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


subprojects {
    project.configurations.all {
        resolutionStrategy.eachDependency {
            details ->
            if (details.requested.group == 'com.android.support'
            && !details.requested.name.contains('multidex')) {
                details.useVersion "26.1.0"
            }
        }
    }
}

这是我的 .build gradle 终端输出的一部分

-2).
18:07:49.612 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]
18:07:49.612 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] FAILURE: Build failed with an exception.
18:07:49.613 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]
18:07:49.613 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Where:
18:07:49.613 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Build file '/Users/remobajwa/Desktop/tu_chat/android/build.gradle' line: 27
18:07:49.613 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]
18:07:49.613 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * What went wrong:
18:07:49.614 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] A problem occurred evaluating root project 'android'.
18:07:49.614 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] > A problem occurred configuring project ':app'.
18:07:49.614 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]    > Failed to notify project evaluation listener.
18:07:49.614 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]       > Could not initialize class com.android.sdklib.repository.AndroidSdkHandler
18:07:49.615 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]
18:07:49.615 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Try:
18:07:49.615 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Run with --stacktrace option to get the stack trace.

最佳答案

几天前我看到了类似的错误，发现我需要升级我的项目以支持 AndroidX。

我能够迁移 Flutter 项目以支持 AndroidX，而无需使用 Android Studio。

这是我做的:

1. 将build.gradle文件中的compileSdkVersion更新为28
2. 和 android.useAndroidX=true 和 android.enableJetifier=true 在 gradle.properties

编辑:如果您看到无法合并 dex 错误，请参阅 this SO question已投票的解决方案包括 (1) 尝试清理并重建或 (2) 在 app/build.gradle 文件中添加以下内容:

android {
    defaultConfig {
       multiDexEnabled true
    }
}

希望这对您有所帮助!

关于升级 flutter 包后 Android 版本不再工作，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/54936122/