我是 kotlin 和 dagger 2 的新手。我尝试关注这个 guide在安卓Java中。但是错误被抛出...
Error:Execution failed for task ':app:kaptDebugKotlin'. Internal compiler error. See log for more details
我做错了什么？
申请
class App : Application() {
val netComponent: NetComponent by lazy {
DaggerNetComponent.builder()
.appModule(AppModule(this)) // This also corresponds to the name of your module: %component_name%Module
.netModule(NetModule("https://api.github.com"))
.build()
}
override fun onCreate() {
super.onCreate()
}
fun netComponent() : NetComponent = netComponent
}
网络组件
@Singleton
@Component(modules= arrayOf(AppModule::class, NetModule::class))
interface NetComponent {
fun inject(activity: HomeActivity)
}
网络模块
@Module()
class NetModule(baseUrl: String) {
val mBaseUrl: String = baseUrl;
@Provides
@Singleton
fun providedSharedPreferences(app: Application): SharedPreferences {
return PreferenceManager.getDefaultSharedPreferences(app);
}
@Provides
@Singleton
fun provideOkHttpCache(app: Application): Cache {
val cacheSize = 10 * 1024 * 1024 // 10 MiB
return Cache(app.cacheDir, cacheSize.toLong())
}
@Provides
@Singleton
fun providedGson(): Gson {
return GsonBuilder()
.excludeFieldsWithoutExposeAnnotation()
.create();
}
@Provides
@Singleton
fun provideOkHttpClient(cache: Cache): OkHttpClient {
return OkHttpClient.Builder()
.cache(cache)
.build();
}
@Provides
@Singleton
fun provideRetrofit(gson: Gson, okHttpClient: OkHttpClient): Retrofit {
return Retrofit.Builder()
.addConverterFactory(GsonConverterFactory.create(gson))
.baseUrl(mBaseUrl)
.client(okHttpClient)
.build()
}
}
应用模块
@Module()
class AppModule(val app: App) {
@Provides
@Singleton
fun provideApp() = app
}
应用组件
@Singleton
@Component(modules = arrayOf(AppModule::class))
interface AppComponent {
fun inject(app: App)
}
最后，HomeActivity
class HomeActivity : AppCompatActivity() {
@Inject var sharedPreferences: SharedPreferences? = null;
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_home)
(application as App).netComponent.inject(this)
}
}
It's build failed when I start using @Inject annotation to HomeActivity Class.
Gradle 应用
apply plugin: 'com.android.application'
apply plugin: 'kotlin-kapt'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
android {
compileSdkVersion rootProject.ext.compileSdkVersion
buildToolsVersion rootProject.ext.buildToolsVersion
defaultConfig {
applicationId "com.viinsoft.mobile.app"
minSdkVersion rootProject.ext.minSdkVersion
targetSdkVersion rootProject.ext.targetSdkVersion
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
// App's dependencies, including test
implementation fileTree(dir: 'libs', include: ['*.jar'])
kapt "com.google.dagger:dagger-compiler:$dragger"
implementation "com.google.dagger:dagger:$dragger"
implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
implementation "com.android.support:design:$supportLibraryVersion"
implementation "com.android.support.constraint:constraint-layout:$constraintLayout"
implementation "com.github.bumptech.glide:glide:$glideVersion"
implementation "com.squareup.retrofit2:retrofit:$retrofit"
implementation "com.squareup.retrofit2:converter-gson:$retrofit"
implementation "com.google.code.gson:gson:$gson"
implementation "com.google.guava:guava:$guavaVersion"
implementation "com.android.support.test.espresso:espresso-idling-resource:$espressoVersion"
// Dependencies for local unit tests
testCompile "junit:junit:$junitVersion"
testCompile "org.mockito:mockito-all:$mockitoVersion"
testCompile "org.hamcrest:hamcrest-all:$hamcrestVersion"
testCompile "org.powermock:powermock-module-junit4:$powerMockito"
testCompile "org.powermock:powermock-api-mockito:$powerMockito"
// Android Testing Support Library's runner and rules
androidTestCompile "com.android.support.test:runner:$runnerVersion"
androidTestCompile "com.android.support.test:rules:$rulesVersion"
// Espresso UI Testing dependencies.
androidTestCompile ("com.android.support.test.espresso:espresso-core:$espressoVersion", {
exclude group: 'com.google.code.findbugs'
})
androidTestCompile ("com.android.support.test.espresso:espresso-contrib:$espressoVersion", {
exclude group: 'com.google.code.findbugs'
})
androidTestCompile ("com.android.support.test.espresso:espresso-intents:$espressoVersion", {
exclude group: 'com.google.code.findbugs'
})
}
kapt {
generateStubs = true
}
渐变项目
buildscript {
ext.kotlin_version = '1.1.4-3'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.0-beta4'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
ext {
// Sdk and tools
minSdkVersion = 16
targetSdkVersion = 26
compileSdkVersion = 26
buildToolsVersion = '26.0.1'
// App dependencies
supportLibraryVersion = '26.0.2'
constraintLayout = '1.0.2'
retrofit = '2.3.0'
gson = '2.8.1'
glideVersion = '4.0.0'
guavaVersion = '23.0-android'
dragger = '2.11'
// Dependencies for local unit tests
junitVersion = '4.12'
mockitoVersion = '1.10.19'
powerMockito = '1.7.1'
hamcrestVersion = '1.3'
// Android Testing Support Library's runner and rules
runnerVersion = '1.0.0'
rulesVersion = '1.0.0'
// Espresso UI Testing dependencies.
espressoVersion = '3.0.1'
}
编辑 GRADLE 日志
* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:kaptDebugKotlin'.
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:63)
at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88)
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$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$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:124)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:80)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:105)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:99)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:625)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:580)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:99)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
Caused by: org.gradle.api.GradleException: Internal compiler error. See log for more details
at org.jetbrains.kotlin.gradle.tasks.TasksUtilsKt.throwGradleExceptionIfError(tasksUtils.kt:9)
at org.jetbrains.kotlin.gradle.internal.KaptTask.compile(KaptTask.kt:71)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.doExecute(DefaultTaskClassInfoStore.java:141)
at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:134)
at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:121)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:731)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:705)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:122)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$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:197)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:111)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92)
... 27 more
最佳答案
我在 Kotlin 上使用 Dagger2，尝试这样做:
@Inject lateinit var sharedPreferences: SharedPreferences
代替:
@Inject var sharedPreferences: SharedPreferences? = null
这样我也解决了 Butterknife 的问题。
编辑:打开 Gradle Console，它可能会给出错误:
关于android - 无法使用 Dagger 2 运行 Kotlin ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46021718/