提供並注入兩個不同實現的實例 - Dagger 2

Question

我有一種情況，我需要兩個Retrofit Services，每個都有其業務實現。

@Provides 
    @Singleton 
    @Named("defaultMulhimService") 
    MulhimService provideMulhimService() { 
     return MulhimService.Creator.newMulhimService(); 
    } 

    @Provides 
    @Singleton 
    @Named("MulhimServiceWithCache") 
    MulhimService providesMulhimServiceWithCache(){ 
     return MulhimService.Creator.newMulhimServiceWithCache(mApplication); 
    } 

我已經看了這個answer使用@Named標註爲模塊，以不同的多個實例這表明，但我不知道，如何將它們注入。

Answer 1

你可以使用這樣的事情（https://guides.codepath.com/android/Dependency-Injection-with-Dagger-2） -

@Provides @Named("cached") 
@Singleton 
OkHttpClient provideOkHttpClient(Cache cache) { 
    OkHttpClient client = new OkHttpClient(); 
    client.setCache(cache); 
    return client; 
} 

@Provides @Named("non_cached") @Singleton 
OkHttpClient provideOkHttpClient() { 
    OkHttpClient client = new OkHttpClient(); 
    return client; 
} 

@Inject @Named("cached") OkHttpClient client; 
@Inject @Named("non_cached") OkHttpClient client2; 

基本上你注射使用@Named預選賽