Replace Java Consumer with repository callback

Author: MihaiCristianCondrea

app/src/main/java/com/d4rk/androidtutorials/java/data/repository/DefaultHomeRepository.java

@@ -2,10 +2,7 @@
 
 import com.d4rk.androidtutorials.java.data.source.HomeLocalDataSource;
 import com.d4rk.androidtutorials.java.data.source.HomeRemoteDataSource;
-import com.d4rk.androidtutorials.java.data.model.PromotedApp;
-
-import java.util.List;
-import java.util.function.Consumer;
+import com.d4rk.androidtutorials.java.data.repository.HomeRepository.PromotedAppsCallback;
 
 /**
  * Default implementation of {@link HomeRepository} combining local and remote sources.
@@ -37,7 +34,7 @@ public String getDailyTip() {
     }
 
     @Override
-    public void fetchPromotedApps(Consumer<List<PromotedApp>> callback) {
-        remoteDataSource.fetchPromotedApps(callback::accept);
+    public void fetchPromotedApps(PromotedAppsCallback callback) {
+        remoteDataSource.fetchPromotedApps(callback::onResult);
     }
 }

app/src/main/java/com/d4rk/androidtutorials/java/data/repository/HomeRepository.java

@@ -2,7 +2,6 @@
 
 import com.d4rk.androidtutorials.java.data.model.PromotedApp;
 import java.util.List;
-import java.util.function.Consumer;
 
 /**
  * Abstraction over home data operations.
@@ -15,5 +14,9 @@ public interface HomeRepository {
 
     String getDailyTip();
 
-    void fetchPromotedApps(Consumer<List<PromotedApp>> callback);
+    void fetchPromotedApps(PromotedAppsCallback callback);
+
+    interface PromotedAppsCallback {
+        void onResult(List<PromotedApp> apps);
+    }
 }