带有 Realm 数据库的 Dagger Hilt

Question

有没有人在 Realm 数据库中使用过 Dagger Hilt。我遇到初始化问题。也许上述解决方案会奏效。

错误 ->

Modules that need to be instantiated by Hilt must have a visible, empty constructor. [Hilt] Processing did not complete. See error above for details. Execution failed for task ':app:kaptDebugKotlin'. A failure occurred while executing org.jetbrains.kotlin.gradle.internal.KaptExecution java.lang.reflect.InvocationTargetException (no error message)`

我的模块 ->

@Module
@InstallIn(SingletonComponent::class)
class LocalDataSourceModule(context: Context) {
    
init {
        Realm.init(context)
    }

    @Provides
    fun provideLocalDataSource(realm: Realm): LocalDataSource = LocalDataSourceImpl(realm)

    @Singleton
    @Provides
    fun provideRealm(configuration: RealmConfiguration): Realm =
        try {
            Realm.getDefaultInstance()
        } catch (e: Exception) {
            Realm.getInstance(configuration)
        }

    @Singleton
    @Provides
    fun provideRealmConfiguration(): RealmConfiguration = RealmConfiguration.Builder().build()
}

我的应用程序 ->

@HiltAndroidApp
class BaseApplication : Application() {

    lateinit var girlComponent: GirlComponent
        private set

    override fun onCreate() {
        super.onCreate()
        Timber.plant(Timber.DebugTree())

        girlComponent = DaggerGirlComponent.builder().localDataSourceModule(
            LocalDataSourceModule(applicationContext)
        ).build()

    }
}

Answer 1

我认为这可能有效。 Hilt 可以注入应用程序上下文。查看 @ApplicationContext

import android.content.Context
import dagger.Module
import dagger.Provides
import dagger.hilt.InstallIn
import dagger.hilt.android.qualifiers.ApplicationContext
import dagger.hilt.components.SingletonComponent
import io.realm.Realm
import io.realm.RealmConfiguration
import javax.inject.Singleton

@InstallIn(SingletonComponent::class)
@Module
object RealmModule {
    @Provides
    @Singleton
    fun providesRealmDatabase(
        @ApplicationContext context: Context
    ): Realm {
        Realm.init(context)
        val realmConfiguration = RealmConfiguration
            .Builder()
            .name("Tsavo Project")
            .build()
        Realm.setDefaultConfiguration(realmConfiguration)
        return Realm.getDefaultInstance()
    }
}

Answer 2

@Singleton
@Provides
fun provideRealm(@ApplicationContext context: Context): Realm =
    try {
        Realm.init(context)
        Realm.getDefaultInstance()
    } catch (e: Exception) {
        Realm.getInstance(provideRealmConfig())
    }

private fun provideRealmConfig(): RealmConfiguration = RealmConfiguration.Builder().build()

带有 Realm 数据库的 Dagger Hilt

Dager Hilt with Realm database

android

kotlin

dependency-injection

realm

dagger-hilt