问题
I'm trying to provide an instance of Retrofit to my Repository using Dagger 2 (with Android module). Buy I'm facing the error:
Error:cannot access Retrofit
Other instances like Picasso was injected with success, I just have problems with Retrofit.
My Module
@Module
class NetworkModule {
@Provides
@Singleton
fun providesRetrofit(): Retrofit {
return Retrofit.Builder()
.addConverterFactory(GsonConverterFactory.create())
.baseUrl(URL_BASE)
.build()
}
@Provides
@Singleton
fun providesPicasso(context: Context): Picasso {
return Picasso.Builder(context)
.loggingEnabled(true)
.build()
}
@Provides
@Singleton
fun providesRemoteRepository(retrofit: Retrofit): RemoteRepository = RemoteRepository(retrofit)
@Provides
@Singleton
fun providesRepository(remote: RemoteRepository): Repository = RepositoryImp(remote)
}
My Application component
@Singleton
@Component(modules = arrayOf(
AppModule::class, NetworkModule::class, AndroidInjectionModule::class, ActivityBuilder::class
))
interface AppComponent {
@Component.Builder
interface Builder {
@BindsInstance
fun application(app: Application): Builder
fun build(): AppComponent
}
fun inject(application: AppApplication)
}
App Component
@Module
class AppModule {
@Provides
@Singleton
fun providesApplicationContext(app: Application): Context = app
}
Activity Builder
@Module
abstract class ActivityBuilder {
@ContributesAndroidInjector(modules = arrayOf(MainActivityModule::class))
abstract fun bindMainActivity(): MainActivity
}
My repository'
class RepositoryImp @Inject constructor(val remoteRepository: RemoteRepository) : Repository {
override fun fetchData() {
}
}
My Remote repository
class RemoteRepository @Inject constructor(retrofit: Retrofit) {
val service: ApiService
init {
service = retrofit.create(ApiService::class.java)
}
}
Gradle Log
e: error: cannot access Retrofit
e:
e: class file for retrofit2.Retrofit not found
e: Consult the following stack trace for details.
e: com.sun.tools.javac.code.Symbol$CompletionFailure: class file for retrofit2.Retrofit not found
w: warning: Supported source version 'RELEASE_7' from annotation processor 'android.arch.lifecycle.LifecycleProcessor' less than -source '1.8'
w:
e: java.lang.IllegalStateException: failed to analyze: org.jetbrains.kotlin.kapt3.diagnostic.KaptError: Error while annotation processing
at org.jetbrains.kotlin.analyzer.AnalysisResult.throwIfError(AnalysisResult.kt:57)
at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules(KotlinToJVMBytecodeCompiler.kt:138)
at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:154)
at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:58)
at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.java:103)
at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.java:51)
at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:92)
at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$2.invoke(CompileServiceImpl.kt:386)
at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$2.invoke(CompileServiceImpl.kt:96)
at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:889)
at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:96)
at org.jetbrains.kotlin.daemon.common.DummyProfiler.withMeasure(PerfUtils.kt:137)
at org.jetbrains.kotlin.daemon.CompileServiceImpl.checkedCompile(CompileServiceImpl.kt:916)
at org.jetbrains.kotlin.daemon.CompileServiceImpl.doCompile(CompileServiceImpl.kt:888)
at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:385)
at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:346)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.jetbrains.kotlin.kapt3.diagnostic.KaptError: Error while annotation processing
at org.jetbrains.kotlin.kapt3.AnnotationProcessingKt.doAnnotationProcessing(annotationProcessing.kt:90)
at org.jetbrains.kotlin.kapt3.AnnotationProcessingKt.doAnnotationProcessing$default(annotationProcessing.kt:42)
at org.jetbrains.kotlin.kapt3.AbstractKapt3Extension.runAnnotationProcessing(Kapt3Extension.kt:205)
at org.jetbrains.kotlin.kapt3.AbstractKapt3Extension.analysisCompleted(Kapt3Extension.kt:166)
at org.jetbrains.kotlin.kapt3.ClasspathBasedKapt3Extension.analysisCompleted(Kapt3Extension.kt:82)
at org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM$analyzeFilesWithJavaIntegration$2.invoke(TopDownAnalyzerFacadeForJVM.kt:96)
at org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration(TopDownAnalyzerFacadeForJVM.kt:106)
at org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration$default(TopDownAnalyzerFacadeForJVM.kt:83)
at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler$analyze$1.invoke(KotlinToJVMBytecodeCompiler.kt:377)
at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler$analyze$1.invoke(KotlinToJVMBytecodeCompiler.kt:68)
at org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport.analyzeAndReport(AnalyzerWithCompilerReport.kt:96)
at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.analyze(KotlinToJVMBytecodeCompiler.kt:368)
at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules(KotlinToJVMBytecodeCompiler.kt:133)
... 29 more
:app:kaptDebugKotlin FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:kaptDebugKotlin'.
> Internal compiler error. See log for more details
Thank you!
回答1:
I found the problem, was in the build.gradle ... My retrofit instance was in a separate module. This module is a api:
App build.gradle
api project(':data')
And I was using implementation in the retrofit dependencies. I changed to api and the problem was fixed.
api "com.squareup.retrofit2:retrofit:$retrofit_version"
api "com.squareup.retrofit2:converter-gson:$retrofit_version"
回答2:
The accepted answer works but using the api function exposes all the other libraries used by the data module to the app module. To avoid this just add the retrofit dependencies to your app module or where ever you need the dependencies.
implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
implementation "com.squareup.retrofit2:converter-gson:$retrofit_version"
Above goes to the app module's Gradle file. If your Retrofit instance also has other dependencies such as RxJava2CallAdapterFactory do not forget to add these depencies too.
来源：https://stackoverflow.com/questions/47124987/dagger-2-cannot-access-retrofit