org.gradle.api.UncheckedIOException：无法捕获输入的快照

Question

我在安装最新的 android studio 预览版后尝试再次构建我的项目，但在更新 gradle 版本时出现以下异常：

org.gradle.api.UncheckedIOException: Failed to capture snapshot of input files for task ':app:mergeDebugResources' property 'aapt2FromMaven' during up-to-date check.
at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.snapshotTaskFiles(CacheBackedTaskHistoryRepository.java:331)
at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.createExecution(CacheBackedTaskHistoryRepository.java:151)
at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.access$100(CacheBackedTaskHistoryRepository.java:61)
at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository$1.getCurrentExecution(CacheBackedTaskHistoryRepository.java:111)
at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.getStates(DefaultTaskArtifactStateRepository.java:208)
at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactStateRepository$TaskArtifactStateImpl.isUpToDate(DefaultTaskArtifactStateRepository.java:93)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:50)
at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:91)
at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:59)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:256)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$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:249)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:238)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$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$1.execute(DefaultTaskPlanExecutor.java:98)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:663)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:597)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$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$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
at java.lang.Thread.run(Thread.java:745)Caused by: org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration$ArtifactResolveException: Could not resolve all files for configuration ':app:_internal_aapt2_binary'.
at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration.rethrowFailure(DefaultConfiguration.java:944)
at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration.access$1600(DefaultConfiguration.java:120)
at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration$ConfigurationFileCollection.getFiles(DefaultConfiguration.java:918)
at org.gradle.api.internal.file.AbstractFileCollection.iterator(AbstractFileCollection.java:68)
at org.gradle.api.internal.changedetection.state.AbstractFileCollectionSnapshotter$FileCollectionVisitorImpl.visitCollection(AbstractFileCollectionSnapshotter.java:72)
at org.gradle.api.internal.file.AbstractFileCollection.visitRootElements(AbstractFileCollection.java:234)
at org.gradle.api.internal.file.CompositeFileCollection.visitRootElements(CompositeFileCollection.java:185)
at org.gradle.api.internal.changedetection.state.AbstractFileCollectionSnapshotter.snapshot(AbstractFileCollectionSnapshotter.java:55)
at org.gradle.api.internal.changedetection.state.DefaultGenericFileCollectionSnapshotter.snapshot(DefaultGenericFileCollectionSnapshotter.java:38)
at org.gradle.api.internal.changedetection.state.CacheBackedTaskHistoryRepository.snapshotTaskFiles(CacheBackedTaskHistoryRepository.java:329)
... 36 more Caused by: org.gradle.internal.resolve.ModuleVersionNotFoundException: Could not find com.android.tools.build:aapt2:3.2.0-alpha18-4804415. 

我的项目的 Gradle 文件如下： build.gradle(项目):

buildscript {
repositories {
    jcenter()
    google()
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.2.0-alpha18'
}}allprojects {
repositories {
    jcenter()
}}

build.gradle(app):

apply plugin: 'com.android.application'

机器人{ compileSdkVersion 27 buildToolsVersion '27.0.3'

defaultConfig {
    applicationId "com.visionapps.app.swipe"
    minSdkVersion 21
    targetSdkVersion 27
}

buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
    }
}
packagingOptions {
    exclude 'META-INF/license.txt'
    exclude 'META-INF/LICENSE'
}}dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support:support-v4:27.1.1'
implementation 'com.android.support:design:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation files('libs/otto-1.3.3.jar')
testImplementation 'junit:junit:4.12'
implementation 'com.android.support:cardview-v7:27.1.1'
implementation 'com.android.support:customtabs:27.1.1'
implementation 'com.android.support:animated-vector-drawable:27.1.1'}

Answer 1

转到设置/Gradle/Android Studio。 然后选中“启用嵌入式 Maven 存储库”。 一切顺利。

Answer 2

在我的情况下，它通过添加：

android {
    ...
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8  // <= add this
        targetCompatibility JavaVersion.VERSION_1_8  // <= add this
    }
}

到 android/app/build.gradle 文件

Answer 3

因为我的网络无法连接到 Maven 存储库，所以遇到了这个问题。更改我的网络设置就可以了

Answer 4

问题来自于如何更具体地配置 compileJjtree 用于 inputDirectory 19 的值。该值设置为 projectDir ，最终将 11 传递给 SourceTask.setSource 2。默认情况下，Gradle 中的任何与 SourceSet 相关的配置都会抓取一切都在指定的源目录下递归。在大多数情况下，这很好，因为文件夹在项目的文件夹布局中很深且隔离。偶尔，更常见的是旧文件夹结构，配置要求源目录更靠近项目根文件夹。在这种情况下，可以包含更多文件，并且通常但并非总是将这些文件指定为任务的输入。 Gradle 将通过为未来的执行运行创建快照来尊重这些输入。在这种情况下，会出现两个问题。

Input snapshot will fail. Just like your current failure, the task will try to snapshot files that are unrelated to the task’s job. Those files could be system files or legitimately locked by another process.
Input snapshot will succeed but the task will never be up-to-date. A folder could be included in the snapshot that happens to be the output of another task that runs before (or after) your task. This will cause Gradle to wrongly detect a change for a task as some of the “input” are changed between runs. This will kind of happen in your case as the compileJjtree will snapshot the build folder which changes as more task are run.

也就是说，要解决您的问题，您必须通过 SourceTask 中的 include 和 exclude 方法来缩小 compileJjtree 中包含的文件数量。如果过滤模式变得过于复杂，您可以随时将 inputDirectory 移动到更独立的地方，让 Gradle 全局化所有内容。

缩小compileJjtree任务的范围解决了问题。

Answer 5

它读...

ModuleVersionNotFoundException：找不到 com.android.tools.build:aapt2:3.2.0-alpha18-4804415。

你可能需要 Gradle >= 4.10 for com.android.tools.build:gradle 3.3.0

（或至少比您现在拥有的更高版本，3.2.0-alpha18）。

这可以在gradle-wrapper.properties中更改：

distributionUrl = https\://services.gradle.org/distributions/gradle-4.4-all.zip

Answer 6

使用 gradle 文件同步项目对我有用。