我正在使用 Android Studio 3.0 Beta 7、Kotlin 1.4-2 和Room Persistence Library 1.0.0-beta1 编译 Android 项目。
这是我在其中添加 Room 依赖项的 Gradle 文件的一部分：
implementation "android.arch.persistence.room:runtime:1.0.0-beta1"
kapt "android.arch.persistence.room:compiler:1.0.0-beta1"
编译时出现以下错误：
警告：警告：注释处理器'android.arch.persistence.room.RoomProcessor'支持的源版本'RELEASE_7'小于-source'1.8'
将堆栈跟踪/调试标志添加到编译选项后，这是我得到的错误：
错误：org.jetbrains.kotlin.kapt3.diagnostic.KaptError：注释处理时出错
10：08：03.727 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] 10：08：03.727 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] 失败：构建失败并出现异常。10:08:03.727 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] 10:08:03.727 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] * 出了什么问题：10:08:03.727 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] 任务“：app:kaptDebugKotlin”执行失败。10:08:03.727 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] > 内部编译器错误。有关详细信息，请参阅日志 10:08:03.728 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 10:08:03.728 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * 例外是：10:08 ：03.728 [错误] [org。gradle.internal.buildevents.BuildExceptionReporter] org.gradle.api.tasks.TaskExecutionException：任务'：app：kaptDebugKotlin'的执行失败。10:08:03.728 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100) 10:08:03.728 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] 在 org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70) 10:08:03.728 [错误] [org.gradle.internal.buildevents .BuildExceptionReporter] 在 org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:63) 10:08:03.728 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] 在 org.gradle。 api.internal。DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:99) 10:08:03.729 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java: 63) 10:08:03.729 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46) 10:08:03.729 [错误] [ org.gradle.internal.buildevents.BuildExceptionReporter] 在 org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) 10:08:03.729 [错误] [org.gradle.internal.buildevents.BuildExceptionReporter]原因：org.gradle.api.GradleException：内部编译器错误。有关更多详细信息，请参阅日志 10:08:03.729 [错误] [org.gradle.internal.buildevents.https://help.gradle.org 10:08:03.730 [错误] [org.gradle.internal.buildevents.BuildResultLogger] 10:08:03.730 [错误] [org.gradle.internal.buildevents.BuildResultLogger] 内置失败8s
清理/重建没有帮助。什么可能导致此错误？临时解决方案似乎是用标准的“annotationProcessor”替换“kapt”，重建然后用“kapt”再次构建。但在项目进一步更改后，错误再次出现。
[编辑]
我的 Gradle 文件（应用程序模块）：
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
android {
compileSdkVersion 26
buildToolsVersion "26.0.2"
defaultConfig {
applicationId "com.mydomain.myapp"
minSdkVersion 19
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
androidExtensions {
experimental = true
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation('com.android.support.test.espresso:espresso-core:3.0.1', {
exclude group: 'com.android.support', module: 'support-annotations'
})
implementation"org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
// Anko Commons
implementation "org.jetbrains.anko:anko-commons:$anko_version"
// Timber logging
implementation "com.jakewharton.timber:timber:$timber_version"
// Architecture components - Lifecycle
implementation "android.arch.lifecycle:extensions:$arch_version"
kapt "android.arch.lifecycle:compiler:$arch_version"
// Architecture components - Room ORM
implementation "android.arch.persistence.room:runtime:$arch_version"
kapt "android.arch.persistence.room:compiler:$arch_version"
// Retrofit
implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
implementation "com.squareup.retrofit2:converter-gson:$retrofit_version"
// Picasso
implementation "com.squareup.picasso:picasso:$picasso_version"
}
Gradle（项目模块）：
buildscript {
ext.kotlin_version = '1.1.4-2'
ext.anko_version = '0.10.1'
ext.timber_version = '4.5.1'
ext.retrofit_version = '2.3.0'
ext.picasso_version = '2.5.2'
ext.constraint_layout_version = '1.0.2'
ext.support_library_version = '26.1.0'
ext.arch_version = '1.0.0-beta1'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.0-beta7'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}