Kapt， Kotlin， Dagger2 注释处理时出错

Question

在使用 kotlin 的项目中添加com.google.dagger：dagger-android-support依赖项后，我收到此 gradle 错误。

这是我构建等级的一部分build.gradle

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'realm-android'
apply plugin: 'me.tatarka.retrolambda'
apply plugin: 'kotlin-kapt'
android {
...
kapt {
generateStubs = true
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
...
kapt "com.google.dagger:dagger-compiler:${daggerVersion}"
kapt "com.google.dagger:dagger-android-processor:${daggerVersion}"
compile "com.google.dagger:dagger:${daggerVersion}"
compile "com.google.dagger:dagger-android-support:${daggerVersion}"
...
}

在这里 我得到的gradle 错误

ApplicationComponent.java:21: error: [dagger.android.AndroidInjector.inject(T)] java.util.Map<java.lang.Class<? extends android.support.v4.app.Fragment>,javax.inject.Provider<dagger.android.AndroidInjector.Factory<? extends android.support.v4.app.Fragment>>> cannot be provided without an @Provides-annotated method.
e: 
public interface ApplicationComponent {
e:        ^
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:144)
at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:167)
at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:55)
at org.jetbrains.kotlin.cli.common.CLICompiler.exec(CLICompiler.java:182)
at org.jetbrains.kotlin.daemon.CompileServiceImpl.execCompiler(CompileServiceImpl.kt:397)
at org.jetbrains.kotlin.daemon.CompileServiceImpl.access$execCompiler(CompileServiceImpl.kt:99)
at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$2.invoke(CompileServiceImpl.kt:365)
at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$2.invoke(CompileServiceImpl.kt:99)
at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$2$$special$$inlined$withValidClientOrSessionProxy$lambda$1.invoke(CompileServiceImpl.kt:798)
at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$2$$special$$inlined$withValidClientOrSessionProxy$lambda$1.invoke(CompileServiceImpl.kt:99)
at org.jetbrains.kotlin.daemon.common.DummyProfiler.withMeasure(PerfUtils.kt:137)

应用程序组件

@Singleton
@Component(modules = {AndroidInjectionModule.class, ApplicationModule.class, RetrofitModule.class, ActivityBuilderModule.class})
public interface ApplicationComponent {
@Component.Builder
interface Builder {
@BindsInstance
Builder application(Application application);
ApplicationComponent build();
}
void inject(TaskApplication application);
}

有人有同样的问题吗？

Answer 1

一旦我使用android.support.v4.app.Fragment，就可以使用AndroidSupportInjectionModule解决。

@Singleton
@Component(modules = {AndroidSupportInjectionModule.class, ApplicationModule.class, RetrofitModule.class, ActivityBuilderModule.class})
public interface ApplicationComponent {
@Component.Builder
interface Builder {
@BindsInstance
Builder application(Application application);
ApplicationComponent build();
}
void inject(TaskApplication application);
}

Answer 2

您是否尝试在应用级 gradle 文件中添加 kapt？

kapt {
generateStubs = true
}