CODEWITHSUNDEEP
androiddependency-injectiondagger-2
Mohamed Ibrahim
Mohamed Ibrahim

Reputation: 3924

provides and inject two instances with different implementations - Dagger 2

I have a situation where I need two Retrofit Services, each one has its business implementation.

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

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

I'm already looked at this answer which suggest using @Named annotation to differ multiple instances at modules, but what I don't know, how to inject them.

Upvotes: 1

Views: 1859

Answers (1)

Dibzmania
Dibzmania

Reputation: 2014

You could use something like this (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;

Basically you inject the instance using the @Named qualifier

Upvotes: 5

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