问题描述
我决定从Dagger切换到Koin,因为它更轻巧,代码更少。 所以我有这样的模块
val databaseModule = module {
single {
get<AppDatabase>().serverDao()
}
// And all the DAOs here
}
val repositoryModule = module {
single<ServerRepository> {
// ServerDao,AccountDao,ApiManager
return@single ServerRepositoryImpl(get(),get(),get())
}
// And all the repositories here
}
val networkModule = module {
single<Gson> {
val gsonBuilder = GsonBuilder()
return@single gsonBuilder.setLenient().create()
}
single {
if (!BuildConfig.DEBUG) return@single null
val httpLoggingInterceptor = HttpLoggingInterceptor()
httpLoggingInterceptor.level = HttpLoggingInterceptor.Level.BODY
return@single httpLoggingInterceptor
}
single {
return@single HeaderInterceptor()
}
single {
return@single BaseUrlHolder(BuildConfig.BASE_HOLDER_URL)
}
single {
val loggingInterceptor = get<Interceptor?>()
OkHttpClient().newBuilder().apply {
connectTimeout(60,TimeUnit.SECONDS)
readTimeout(60,TimeUnit.SECONDS)
writeTimeout(60,TimeUnit.SECONDS)
loggingInterceptor?.let {
addInterceptor(it)
}
addInterceptor(get<HeaderInterceptor>())
}.also {
return@single it.build()
}
}
single<Retrofit> {
return@single Retrofit.Builder()
.addCallAdapterFactory(CoroutineCallAdapterFactory())
.addConverterFactory(GsonConverterFactory.create(get()))
.client(get<OkHttpClient>())
.build()
}
single<MyApiService> {
return@single get<Retrofit>().create(MyApiService::class.java)
}
}
val managersModule = module {
single<ApiManager> {
// I have to provide the URL runTime because it is not standar
// private val baseUrlHolder: BaseUrlHolder,// private val retrofitBuilder: Retrofit.Builder
return@single ApiManagerImpl(get(),get())
}
所以在我的SplashView中,我想拥有ServerRepository和ApiManager。 我试图通过KoinComponent让它们通过,但一无所获
// *****BaseViewModel implements KoinComponent*****
class SplashViewModel : BaseViewModel() {
// Here i should get the serverRepository.
private val serverRepository: ServerRepository by inject()
......
}
在SplashActivity中,我将viewmodel作为
private val splashViewModel: SplashViewModel by viewModels()
我总是遇到相同的错误
Caused by: org.koin.core.error.NoBeanDefFoundException: No definition found for class:'retrofit2.Retrofit$Builder'. Check your definitions!
解决方法
必须定义ViewModel的Bean定义
val viewModelModule = module {
viewModel {
SplashViewModel() // if there are no parameter otherwise use get() function to pass the parameter of the viewmodel
}
}
,
解决方案是我没有正确编写networkModule
single<OkHttpClient> {
val loggingInterceptor = get<Interceptor?>()
val httpClientBuilder = OkHttpClient().newBuilder().apply {
connectTimeout(60,TimeUnit.SECONDS)
readTimeout(60,TimeUnit.SECONDS)
writeTimeout(60,TimeUnit.SECONDS)
addInterceptor(get<HeaderInterceptor>())
loggingInterceptor?.let {
addInterceptor(loggingInterceptor)
}
}
return@single httpClientBuilder.build()
}
single<Retrofit.Builder> {
return@single Retrofit.Builder()
.addCallAdapterFactory(CoroutineCallAdapterFactory())
.addConverterFactory(GsonConverterFactory.create(get()))
.client(get<OkHttpClient>())
}
,
您在这里询问Retrofit.Builder
的实例
val managersModule = module {
single<ApiManager> {
// I have to provide the URL runTime because it is not standar
// private val baseUrlHolder: BaseUrlHolder,// private val retrofitBuilder: Retrofit.Builder
return@single ApiManagerImpl(get(),get())
}
在依存关系图中,您仅提供Retrofit
而不是Retrofit.Builder
以下几行中的更改可能会解决这种情况:
single<Retrofit.Builder> { // change type
return@single Retrofit.Builder()
.addCallAdapterFactory(CoroutineCallAdapterFactory())
.addConverterFactory(GsonConverterFactory.create(get()))
.client(get<OkHttpClient>())
// Remove
//.build()
}
single<MyApiService> {
// adjustment
return@single get<Retrofit.Builder>().build().create(MyApiService::class.java)
}