Trying basic MVVM implementation based on https://github.com/mitchtabian/MVVMExample1

2021-09-19 09:51:54 +02:00
parent b9dbde7f7c
commit cf7f96efad
6 changed files with 128 additions and 170 deletions
@@ -0,0 +1,56 @@
+package it.danieleverducci.nextcloudmaps.repository;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.MutableLiveData;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import it.danieleverducci.nextcloudmaps.api.ApiProvider;
+import it.danieleverducci.nextcloudmaps.model.Geofavorite;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+
+/**
+ * Singleton pattern
+ */
+public class GeofavoriteRepository {
+
+    private static GeofavoriteRepository instance;
+    private ArrayList<Geofavorite> dataSet = new ArrayList<>();
+
+    public static GeofavoriteRepository getInstance() {
+        if(instance == null){
+            instance = new GeofavoriteRepository();
+        }
+        return instance;
+    }
+
+    public MutableLiveData<List<Geofavorite>> getGeofavorites(){
+        // Obtain geofavorites
+        Call<List<Geofavorite>> call = ApiProvider.getAPI().getGeofavorites();
+        call.enqueue(new Callback<List<Geofavorite>>() {
+            @Override
+            public void onResponse(@NonNull Call<List<Geofavorite>> call, @NonNull Response<List<Geofavorite>> response) {
+                if (response.isSuccessful() && response.body() != null) {
+                    dataSet.addAll(response.body());
+                } else {
+                    onFailure(call, new Throwable("Dataset is empty"));
+                }
+            }
+
+            @Override
+            public void onFailure(@NonNull Call<List<Geofavorite>> call, @NonNull Throwable t) {
+                // TODO
+            }
+        });
+
+        MutableLiveData<List<Geofavorite>> data = new MutableLiveData<>();
+        data.setValue(dataSet);
+        return data;
+    }
+
+
+}