如何为提供程序功能的构造函数参数指定Dagger 2限定符注释？

Question

我定义了我的Dagger 2限定符

@Qualifier
@MustBeDocumented
@kotlin.annotation.Retention(AnnotationRetention.RUNTIME)
annotation class TrackerQualifier(val value: TrackerType)

enum class TrackerType {
    INTERNAL,
    EXTERNAL
}

它很好用，

@Provides
@TrackerQualifier(TrackerType.INTERNAL)
@Singleton
UsageTracker providesInternalTracker(InternalTracker analyticsTracker) {
    return new UsageTracker(analyticsTracker);
}

@Provides
@TrackerQualifier(TrackerType.EXTERNAL)
@Singleton
UsageTracking providesExternalTracker(ExternalTracker eventTracker) {
    return eventTracker;
}

但是，如果我想将其发送到另一个注入的模块中。

@Provides
fun provideCommonImage(
        imageEngine: ImageEngine,
        externalUsageTracking: UsageTracking) =
        CommonImage(imageEngine, externalUsageTracking)

它将编译失败，因为它不知道上面的externalUsageTracking: UsageTracking是INTERNAL还是EXTERNAL。我该如何注释该参数？

Answer 1

尝试显示限定词。

@Provides
fun provideCommonImage(
        imageEngine: ImageEngine,
        @TrackerQualifier(TrackerType.EXTERNAL) tracker: UsageTracker) =
        CommonImage(imageEngine, tracker)