not a valid name: <set-?>Provider After updating android studio to 3.5

Hi all, i’m facing issue with dagger after updating android studio to 3.5, this is the stacktrace

e: [kapt] An exception occurred: java.lang.IllegalArgumentException: not a valid name: <set-?>Provider
	at com.squareup.javapoet.Util.checkArgument(Util.java:53)
	at com.squareup.javapoet.FieldSpec.builder(FieldSpec.java:91)
	at dagger.internal.codegen.MembersInjectorGenerator.write(MembersInjectorGenerator.java:157)
	at dagger.internal.codegen.MembersInjectorGenerator.write(MembersInjectorGenerator.java:66)
	at dagger.internal.codegen.SourceFileGenerator.generate(SourceFileGenerator.java:78)
	at dagger.internal.codegen.InjectBindingRegistryImpl$BindingsCollection.generateBindings(InjectBindingRegistryImpl.java:89)
	at dagger.internal.codegen.InjectBindingRegistryImpl.generateSourcesForRequiredBindings(InjectBindingRegistryImpl.java:183)
	at dagger.internal.codegen.ComponentProcessor.postRound(ComponentProcessor.java:189)
	at dagger.shaded.auto.common.BasicAnnotationProcessor.process(BasicAnnotationProcessor.java:183)
	at org.jetbrains.kotlin.kapt3.base.incremental.IncrementalProcessor.process(incrementalProcessors.kt)
	at org.jetbrains.kotlin.kapt3.base.ProcessorWrapper.process(annotationProcessing.kt:132)
	at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:794)
	at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:705)
	at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1800(JavacProcessingEnvironment.java:91)
	at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1035)
	at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1176)
	at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1170)
	at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1068)
	at org.jetbrains.kotlin.kapt3.base.AnnotationProcessingKt.doAnnotationProcessing(annotationProcessing.kt:80)
	at org.jetbrains.kotlin.kapt3.base.AnnotationProcessingKt.doAnnotationProcessing$default(annotationProcessing.kt:36)
	at org.jetbrains.kotlin.kapt3.AbstractKapt3Extension.runAnnotationProcessing(Kapt3Extension.kt:223)
	at org.jetbrains.kotlin.kapt3.AbstractKapt3Extension.analysisCompleted(Kapt3Extension.kt:187)
	at org.jetbrains.kotlin.kapt3.ClasspathBasedKapt3Extension.analysisCompleted(Kapt3Extension.kt:98)
	at org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM$analyzeFilesWithJavaIntegration$2.invoke(TopDownAnalyzerFacadeForJVM.kt:95)
	at org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration(TopDownAnalyzerFacadeForJVM.kt:105)
	at org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration$default(TopDownAnalyzerFacadeForJVM.kt:80)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler$analyze$1.invoke(KotlinToJVMBytecodeCompiler.kt:398)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler$analyze$1.invoke(KotlinToJVMBytecodeCompiler.kt:65)
	at org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport.analyzeAndReport(AnalyzerWithCompilerReport.kt:107)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.analyze(KotlinToJVMBytecodeCompiler.kt:389)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules$cli(KotlinToJVMBytecodeCompiler.kt:118)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:166)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:56)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:84)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:42)
	at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:104)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$1$2.invoke(CompileServiceImpl.kt:442)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$1$2.invoke(CompileServiceImpl.kt:102)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:1005)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:102)
	at org.jetbrains.kotlin.daemon.common.DummyProfiler.withMeasure(PerfUtils.kt:138)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl.checkedCompile(CompileServiceImpl.kt:1047)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl.doCompile(CompileServiceImpl.kt:1004)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:441)
	at sun.reflect.GeneratedMethodAccessor103.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:357)
	at sun.rmi.transport.Transport$1.run(Transport.java:200)
	at sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

Dagger version: 2.24

[bulatgaleev]

Seems that i have managed it to work on: android studio 3.5.0 dagger version 2.24, gradle plugin 2.5.0 wrapper 5.4.1

Just double check that your project neither use @set:Inject or @Inject set structures.

@Inject lateinit var: Some

would be enough

[TheMedo]

For me this did not work:

@set:Inject
lateinit var something: Something

This did not work either:

var something: Something? = null
   @Inject set

But, this did:

var something: Something? = null
   @Inject set(value) {
      field = value
   }

IDE will complain that the full declaration is redundant and can be simplified, however this was the only way that kapt accepted 😃