Merge pull request #199 from pulsejet/noroom

Swap database for caching

app/build.gradle

@@ -23,13 +23,11 @@ android {
 }
 
 ext {
-    supportLibVersion = '27.1.1'
+    supportLibVersion = '27.1.0'
     playServicesVersion = '15.0.1'
-    butterKnifeVersion = '8.8.1'
     retrofitVersion = '2.3.0'
     okhttpVersion = '3.11.0'
     picassoVersion = '2.71828'
-    archRoomVersion = '1.1.1'
     circleImageViewVersion = '2.2.0'
     markwonVersion = '1.0.6'
 }
@@ -37,25 +35,14 @@ ext {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'com.google.firebase:firebase-messaging:17.1.0'
-    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
-        exclude group: 'com.android.support', module: 'support-annotations'
-    })
-    testImplementation "junit:junit:4.12"
     implementation "com.android.support:design:${supportLibVersion}"
     implementation "com.android.support:support-v4:${supportLibVersion}"
-    implementation "com.jakewharton:butterknife:${butterKnifeVersion}"
-    implementation "com.google.android.gms:play-services-gcm:${playServicesVersion}"
-    implementation "com.google.android.gms:play-services-maps:${playServicesVersion}"
     implementation "com.google.android.gms:play-services-location:${playServicesVersion}"
-    annotationProcessor "com.jakewharton:butterknife-compiler:${butterKnifeVersion}"
     implementation "com.squareup.retrofit2:retrofit:${retrofitVersion}"
     implementation "com.squareup.retrofit2:converter-gson:${retrofitVersion}"
     implementation "com.squareup.okhttp3:okhttp:${okhttpVersion}"
     implementation "com.squareup.okhttp3:logging-interceptor:${okhttpVersion}"
     implementation "com.squareup.picasso:picasso:${picassoVersion}"
-    implementation "com.android.support:customtabs:${supportLibVersion}"
-    implementation "android.arch.persistence.room:runtime:${archRoomVersion}"
-    annotationProcessor "android.arch.persistence.room:compiler:${archRoomVersion}"
     implementation "com.android.support:cardview-v7:${supportLibVersion}"
     implementation "de.hdodenhof:circleimageview:${circleImageViewVersion}"
     implementation "ru.noties:markwon:${markwonVersion}"

app/src/main/AndroidManifest.xml

@@ -3,6 +3,7 @@
 
     package="app.insti">
 
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

app/src/main/java/app/insti/Constants.java

@@ -32,4 +32,9 @@ public class Constants {
     public static final double MAP_Xn = 19.134417, MAP_Yn = 72.901229, MAP_Zn = 1757, MAP_Zyn = 501;
     public static final double[] MAP_WEIGHTS_X = {-11.392001766454612, -36.31634553309953, 73.91269388324432, -24.14021153064087, 3.4508817531539115, -0.1462262375477863, 5.532505074667804, -1.542391995870977, 36.14211738142935};
     public static final double[] MAP_WEIGHTS_Y = {0.09738953520399705, -4.519868444089616, 62.38493718381985, 16.664561869057696, -2.168377988768651, 0.0919143297622087, 0.32304266159540823, 0.21688067854428716, -12.81393255320748};
+
+    public static final String resizeImageUrl(String url, Integer dim) {
+        if (url == null) { return url; }
+        return url.replace("api.insti.app/static/", "img.insti.app/static/" + dim.toString() + "/");
+    }
 }

app/src/main/java/app/insti/activity/LoginActivity.java

@@ -40,6 +40,11 @@ public class LoginActivity extends AppCompatActivity {
     private boolean loggingIn = false;
     private ProgressDialog progressDialog;
 
+    private RetrofitInterface retrofitInterface;
+    public RetrofitInterface getRetrofitInterface() {
+        return retrofitInterface;
+    }
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -63,6 +68,9 @@ public class LoginActivity extends AppCompatActivity {
     protected void onStart() {
         super.onStart();
 
+        ServiceGenerator serviceGenerator = new ServiceGenerator(getApplicationContext());
+        this.retrofitInterface = serviceGenerator.getRetrofitInterface();
+
         WebView webview = (WebView) findViewById(R.id.login_webview);
         webview.getSettings().setJavaScriptEnabled(true);
         webview.getSettings().setDomStorageEnabled(true);
@@ -80,7 +88,7 @@ public class LoginActivity extends AppCompatActivity {
 
     private void login(final String authorizationCode, final String redirectURL) {
         /* This can be null if play services is hung */
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = getRetrofitInterface();
         Call<LoginResponse> call;
         if (fcmId == null) {
             call = retrofitInterface.login(authorizationCode, redirectURL);
@@ -118,7 +126,7 @@ public class LoginActivity extends AppCompatActivity {
             progressDialog.show();
         }
 
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = getRetrofitInterface();
         Call<LoginResponse> call;
 
         /* This can be null if play services is hung */

app/src/main/java/app/insti/activity/MainActivity.java

@@ -37,6 +37,7 @@ import com.google.firebase.iid.InstanceIdResult;
 import com.google.gson.JsonObject;
 import com.squareup.picasso.Picasso;
 
+import java.io.File;
 import java.util.List;
 
 import app.insti.Constants;
@@ -66,6 +67,7 @@ import app.insti.fragment.QuickLinksFragment;
 import app.insti.fragment.SettingsFragment;
 import app.insti.fragment.TrainingBlogFragment;
 import app.insti.notifications.NotificationEventReceiver;
+import okhttp3.Cache;
 import okhttp3.OkHttpClient;
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -87,6 +89,11 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
     private boolean showNotifications = false;
     private BackHandledFragment selectedFragment;
     private Menu menu;
+    private RetrofitInterface retrofitInterface;
+
+    public RetrofitInterface getRetrofitInterface() {
+        return retrofitInterface;
+    }
 
     public static void hideKeyboard(Activity activity) {
         InputMethodManager imm = (InputMethodManager) activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
@@ -107,6 +114,9 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
         } catch (IllegalStateException ignored) {
         }
 
+        ServiceGenerator serviceGenerator = new ServiceGenerator(getApplicationContext());
+        this.retrofitInterface = serviceGenerator.getRetrofitInterface();
+
         /* Make notification channel on oreo */
         if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
             createNotificationChannel();
@@ -140,15 +150,13 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
             }
         }
 
-        fetchNotifications();
-
         checkLatestVersion();
 
         NotificationEventReceiver.setupAlarm(getApplicationContext());
     }
 
     private void fetchNotifications() {
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = getRetrofitInterface();
         retrofitInterface.getNotifications(getSessionIDHeader()).enqueue(new Callback<List<Notification>>() {
             @Override
             public void onResponse(Call<List<Notification>> call, Response<List<Notification>> response) {
@@ -172,7 +180,7 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
         try {
             PackageInfo pInfo = this.getPackageManager().getPackageInfo(getPackageName(), 0);
             final int versionCode = pInfo.versionCode;
-            RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+            RetrofitInterface retrofitInterface = getRetrofitInterface();
             retrofitInterface.getLatestVersion().enqueue(new Callback<JsonObject>() {
                 @Override
                 public void onResponse(Call<JsonObject> call, Response<JsonObject> response) {
@@ -255,7 +263,7 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
                     updateFragment(userFragment);
                     break;
                 case "event":
-                    RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                    RetrofitInterface retrofitInterface = getRetrofitInterface();
                     retrofitInterface.getEvent(getSessionIDHeader(), getID(appLinkData)).enqueue(new Callback<Event>() {
                         @Override
                         public void onResponse(Call<Event> call, Response<Event> response) {
@@ -319,7 +327,7 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
             @Override
             public void onSuccess(InstanceIdResult instanceIdResult) {
                 String fcmId = instanceIdResult.getToken();
-                RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                RetrofitInterface retrofitInterface = getRetrofitInterface();
                 retrofitInterface.getUserMe(getSessionIDHeader(), fcmId).enqueue(new Callback<User>() {
                     @Override
                     public void onResponse(Call<User> call, Response<User> response) {
@@ -394,8 +402,15 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
     public boolean onCreateOptionsMenu(Menu menu) {
         // Inflate the menu; this adds items to the action bar if it is present.
         this.menu = menu;
-        fetchNotifications();
         getMenuInflater().inflate(R.menu.main, this.menu);
+
+        // Fetch notifictions if logged in or hide icon
+        if (session.isLoggedIn()) {
+            fetchNotifications();
+        } else {
+            this.menu.findItem(R.id.action_notifications).setVisible(false);
+        }
+
         return true;
     }
 
@@ -540,8 +555,11 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
 
     public void initPicasso() {
         Picasso.Builder builder = new Picasso.Builder(getApplicationContext());
+        OkHttpClient.Builder client = new OkHttpClient.Builder();
+        Cache cache = new Cache(new File(getApplicationContext().getCacheDir(), "http-cache"), 100 * 1024 * 1024);
+        client.cache(cache);
         builder.downloader(new com.squareup.picasso.OkHttp3Downloader((
-                new OkHttpClient.Builder().build()
+                client.build()
         )));
         Picasso built = builder.build();
         built.setIndicatorsEnabled(false);

app/src/main/java/app/insti/adapter/BodyAdapter.java

@@ -12,6 +12,7 @@ import com.squareup.picasso.Picasso;
 
 import java.util.List;
 
+import app.insti.Constants;
 import app.insti.ItemClickListener;
 import app.insti.R;
 import app.insti.data.Body;
@@ -51,7 +52,9 @@ public class BodyAdapter extends RecyclerView.Adapter<BodyAdapter.ViewHolder> {
         Body body = bodyList.get(position);
         holder.name.setText(body.getBodyName());
         holder.description.setText(body.getBodyShortDescription());
-        Picasso.get().load(body.getBodyImageURL()).resize(0, 200).into(holder.image);
+        Picasso.get().load(
+                Constants.resizeImageUrl(body.getBodyImageURL(), 200)
+        ).into(holder.image);
 
     }
 

app/src/main/java/app/insti/adapter/FeedAdapter.java

@@ -17,6 +17,7 @@ import java.util.List;
 import java.util.Calendar;
 
 
+import app.insti.Constants;
 import app.insti.ItemClickListener;
 import app.insti.R;
 import app.insti.data.Event;
@@ -112,17 +113,14 @@ public class FeedAdapter extends RecyclerView.Adapter<FeedAdapter.ViewHolder> {
 
         getSubtitle(viewHolder, currentEvent);
 
-        // Fallback to image of first body if event has no image
-        if (currentEvent.getEventImageURL() == null) {
-            currentEvent.setEventImageURL(currentEvent.getEventBodies().get(0).getBodyImageURL());
-        }
-
         if (currentEvent.isEventBigImage()) {
             viewHolder.eventBigPicture.setVisibility(View.VISIBLE);
             viewHolder.eventPicture.setVisibility(View.GONE);
             Picasso.get().load(currentEvent.getEventImageURL()).into(viewHolder.eventBigPicture);
         } else {
-            Picasso.get().load(currentEvent.getEventImageURL()).into(viewHolder.eventPicture);
+            Picasso.get().load(
+                    Constants.resizeImageUrl(currentEvent.getEventImageURL(), 200)
+            ).into(viewHolder.eventPicture);
         }
     }
 

app/src/main/java/app/insti/adapter/NotificationsAdapter.java

@@ -13,6 +13,7 @@ import com.squareup.picasso.Picasso;
 
 import java.util.List;
 
+import app.insti.Constants;
 import app.insti.ItemClickListener;
 import app.insti.R;
 import app.insti.data.Event;
@@ -53,11 +54,15 @@ public class NotificationsAdapter extends RecyclerView.Adapter<NotificationsAdap
         viewholder.notificationVerb.setText(appNotification.getNotificationVerb());
         if (appNotification.getNotificationActorType().contains("event")) {
             Event event = gson.fromJson(gson.toJson(appNotification.getNotificationActor()), Event.class);
-            Picasso.get().load(event.getEventImageURL()).into(viewholder.notificationPicture);
+            Picasso.get().load(
+                    Constants.resizeImageUrl(event.getEventImageURL(), 200)
+            ).into(viewholder.notificationPicture);
             viewholder.notificationTitle.setText(event.getEventName());
         } else if (appNotification.getNotificationActorType().contains("newsentry")) {
             NewsArticle article = gson.fromJson(gson.toJson(appNotification.getNotificationActor()), NewsArticle.class);
-            Picasso.get().load(article.getBody().getBodyImageURL()).into(viewholder.notificationPicture);
+            Picasso.get().load(
+                    Constants.resizeImageUrl(article.getBody().getBodyImageURL(), 200)
+            ).into(viewholder.notificationPicture);
             viewholder.notificationTitle.setText(article.getTitle());
         } else if (appNotification.getNotificationActorType().contains("blogentry")) {
             PlacementBlogPost post = gson.fromJson(gson.toJson(appNotification.getNotificationActor()), PlacementBlogPost.class);

app/src/main/java/app/insti/api/ServiceGenerator.java

 package app.insti.api;
 
+import android.content.Context;
+import android.net.NetworkInfo;
+import android.util.Log;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.concurrent.TimeUnit;
+
+import okhttp3.Cache;
+import okhttp3.CacheControl;
+import okhttp3.Interceptor;
 import okhttp3.OkHttpClient;
-import okhttp3.logging.HttpLoggingInterceptor;
+import okhttp3.Request;
+import okhttp3.Response;
 import retrofit2.Retrofit;
 import retrofit2.converter.gson.GsonConverterFactory;
 
 public class ServiceGenerator {
+    public static final String HEADER_CACHE_CONTROL = "Cache-Control";
+    public static final String HEADER_PRAGMA = "Pragma";
     private static final String BASE_URL = "https://api.insti.app/api/";
+
+    private Context context;
+
+    private Interceptor provideCacheInterceptor = new Interceptor() {
+        @Override
+        public Response intercept(Chain chain) throws IOException {
+            Response response = chain.proceed(chain.request());
+
+            CacheControl cacheControl;
+
+            if (isConnected()) {
+                cacheControl = new CacheControl.Builder()
+                        .maxAge(0, TimeUnit.SECONDS)
+                        .build();
+            } else {
+                cacheControl = new CacheControl.Builder()
+                        .maxStale(7, TimeUnit.DAYS)
+                        .build();
+            }
+
+            return response.newBuilder()
+                    .removeHeader(HEADER_PRAGMA)
+                    .removeHeader(HEADER_CACHE_CONTROL)
+                    .header(HEADER_CACHE_CONTROL, cacheControl.toString())
+                    .build();
+        }
+    };
+
+    private Interceptor provideOfflineCacheInterceptor = new Interceptor() {
+        @Override
+        public Response intercept(Chain chain) throws IOException {
+            Request request = chain.request();
+
+            if (!isConnected()) {
+                CacheControl cacheControl = new CacheControl.Builder()
+                        .maxStale(7, TimeUnit.DAYS)
+                        .build();
+
+                request = request.newBuilder()
+                        .removeHeader(HEADER_PRAGMA)
+                        .removeHeader(HEADER_CACHE_CONTROL)
+                        .cacheControl(cacheControl)
+                        .build();
+            }
+
+            return chain.proceed(request);
+        }
+    };
+
+    private Cache provideCache() {
+        Cache cache = null;
+
+        try {
+            cache = new Cache(new File(context.getCacheDir(), "api-cache"),
+                    50 * 1024 * 1024); // 50 MB
+        } catch (Exception e) {
+            Log.e("cache", "Could not create Cache!");
+        }
+
+        return cache;
+    }
+
+    public boolean isConnected() {
+        Log.wtf("cache", "MEOW");
+        try {
+            android.net.ConnectivityManager e = (android.net.ConnectivityManager) context.getSystemService(
+                    Context.CONNECTIVITY_SERVICE);
+            NetworkInfo activeNetwork = e.getActiveNetworkInfo();
+            Log.wtf("cache", Boolean.toString(activeNetwork != null && activeNetwork.isConnectedOrConnecting()));
+            return activeNetwork != null && activeNetwork.isConnectedOrConnecting();
+        } catch (Exception e) {
+            Log.w("cache", e.toString());
+        }
+
+        return false;
+    }
+
     private static OkHttpClient.Builder clientBuilder = new OkHttpClient.Builder();
+
     private static Retrofit.Builder retrofitBuilder = new Retrofit.Builder()
             .baseUrl(BASE_URL)
             .addConverterFactory(GsonConverterFactory.create());
-    private static Retrofit retrofit;
 
-    public static <S> S createService(Class<S> serviceClass) {
-        retrofit = retrofitBuilder.client(clientBuilder.build()).build();
-        return retrofit.create(serviceClass);
+    private Retrofit retrofit;
+    public RetrofitInterface retrofitInterface;
+    public ServiceGenerator(Context mContext) {
+        context = mContext;
+        retrofit = retrofitBuilder.client(
+                clientBuilder
+                        .addInterceptor(provideOfflineCacheInterceptor)
+                        .addNetworkInterceptor(provideCacheInterceptor)
+                        .cache(provideCache())
+                        .build()
+        ).build();
+        retrofitInterface = retrofit.create(RetrofitInterface.class);
+    }
+
+    public RetrofitInterface getRetrofitInterface() {
+        return retrofitInterface;
     }
 }

app/src/main/java/app/insti/data/AppDatabase.java

-package app.insti.data;
-
-import android.arch.persistence.room.Database;
-import android.arch.persistence.room.Room;
-import android.arch.persistence.room.RoomDatabase;
-import android.arch.persistence.room.TypeConverters;
-import android.content.Context;
-
-@Database(entities = {Event.class, Body.class, Venue.class, User.class, Role.class, PlacementBlogPost.class, TrainingBlogPost.class, HostelMessMenu.class, NewsArticle.class}, version = 2, exportSchema = false)
-@TypeConverters({Converters.class})
-public abstract class AppDatabase extends RoomDatabase {
-
-    private static AppDatabase INSTANCE;
-
-    public static AppDatabase getAppDatabase(Context context) {
-        if (INSTANCE == null) {
-            INSTANCE =
-                    Room.databaseBuilder(context.getApplicationContext(), AppDatabase.class, "database")
-                            // allow queries on the main thread.
-                            // Don't do this on a real app! See PersistenceBasicSample for an example.
-                            // .allowMainThreadQueries()
-                            .fallbackToDestructiveMigration()
-                            .build();
-        }
-        return INSTANCE;
-    }
-
-    public static void destroyInstance() {
-        INSTANCE = null;
-    }
-
-    public abstract DbDao dbDao();
-}

app/src/main/java/app/insti/data/Body.java

 package app.insti.data;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.Ignore;
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.annotations.SerializedName;
 
 import java.util.List;
 
-@Entity(tableName = "bodies")
 public class Body {
-    @NonNull()
-    @PrimaryKey()
-    @ColumnInfo(name = "id")
     @SerializedName("id")
     String bodyID;
-    @ColumnInfo(name = "str_id")
     @SerializedName("str_id")
     String bodyStrID;
-    @ColumnInfo(name = "name")
     @SerializedName("name")
     String bodyName;
-    @ColumnInfo(name = "short_description")
     @SerializedName("short_description")
     String bodyShortDescription;
-    @ColumnInfo(name = "description")
     @SerializedName("description")
     String bodyDescription;
-    @ColumnInfo(name = "image_url")
     @SerializedName("image_url")
     String bodyImageURL;
-    @ColumnInfo(name = "children")
     @SerializedName("children")
     List<Body> bodyChildren;
-    @ColumnInfo(name = "parents")
     @SerializedName("parents")
     List<Body> bodyParents;
-    @ColumnInfo(name = "events")
     @SerializedName("events")
     List<Event> bodyEvents;
-    @ColumnInfo(name = "followers_count")
     @SerializedName("followers_count")
     int bodyFollowersCount;
-    @ColumnInfo(name = "website_url")
     @SerializedName("website_url")
     String bodyWebsiteURL;
-    @ColumnInfo(name = "blog_url")
     @SerializedName("blog_url")
     String bodyBlogURL;
-    @ColumnInfo(name = "user_follows")
     @SerializedName("user_follows")
     boolean bodyUserFollows;
-    @ColumnInfo(name = "roles")
     @SerializedName("roles")
     List<Role> bodyRoles;
 
-    @Ignore
     public Body(@NonNull String bodyID) {
         this.bodyID = bodyID;
     }

app/src/main/java/app/insti/data/Converters.java

-package app.insti.data;
-
-import android.arch.persistence.room.TypeConverter;
-import android.util.Log;
-
-import com.google.gson.Gson;
-import com.google.gson.JsonSyntaxException;
-import com.google.gson.reflect.TypeToken;
-
-import java.lang.reflect.Type;
-import java.sql.Timestamp;
-import java.util.List;
-
-public class Converters {
-    @TypeConverter
-    public static List<Event> eventsfromString(String value) {
-        Type listType = new TypeToken<List<Event>>() {
-        }.getType();
-        return new Gson().fromJson(value, listType);
-    }
-
-    @TypeConverter
-    public static String stringfromEvents(List<Event> list) {
-        Gson gson = new Gson();
-        String json = gson.toJson(list);
-        return json;
-    }
-
-    @TypeConverter
-    public static List<User> usersfromString(String value) {
-        Type listType = new TypeToken<List<User>>() {
-        }.getType();
-        return new Gson().fromJson(value, listType);
-    }
-
-    @TypeConverter
-    public static String stringfromUsers(List<User> list) {
-        Gson gson = new Gson();
-        String json = gson.toJson(list);
-        return json;
-    }
-
-    @TypeConverter
-    public static List<Venue> venuesfromString(String value) {
-        Type listType = new TypeToken<List<Venue>>() {
-        }.getType();
-        return new Gson().fromJson(value, listType);
-    }
-
-    @TypeConverter
-    public static String stringfromVenues(List<Venue> list) {
-        Gson gson = new Gson();
-        String json = gson.toJson(list);
-        return json;
-    }
-
-    @TypeConverter
-    public static List<Body> bodiesfromString(String value) {
-        Type listType = new TypeToken<List<Body>>() {
-        }.getType();
-        return new Gson().fromJson(value, listType);
-    }
-
-    @TypeConverter
-    public static String stringfromBodies(List<Body> list) {
-        Gson gson = new Gson();
-        String json = gson.toJson(list);
-        return json;
-    }
-
-    @TypeConverter
-    public static List<Role> rolesfromString(String value) {
-        Type listType = new TypeToken<List<Role>>() {
-        }.getType();
-        return new Gson().fromJson(value, listType);
-    }
-
-    @TypeConverter
-    public static String stringfromRoles(List<Role> list) {
-        Gson gson = new Gson();
-        String json = gson.toJson(list);
-        return json;
-    }
-
-    @TypeConverter
-    public static Timestamp timestampfromString(String value) {
-        try {
-            return new Gson().fromJson(value, Timestamp.class);
-        } catch (JsonSyntaxException e) {
-            Log.d("Converters", "timestampfromString: " + value);
-            e.printStackTrace();
-            return null;
-        }
-    }
-
-    @TypeConverter
-    public static String stringfromTimestamp(Timestamp timestamp) {
-        Gson gson = new Gson();
-        String json = gson.toJson(timestamp);
-        return json;
-    }
-
-    @TypeConverter
-    public static Body bodyfromString(String value) {
-        Type listType = new TypeToken<Body>() {
-        }.getType();
-        return new Gson().fromJson(value, listType);
-    }
-
-    @TypeConverter
-    public static String stringfromBody(Body body) {
-        Gson gson = new Gson();
-        String json = gson.toJson(body);
-        return json;
-    }
-
-    @TypeConverter
-    public static Object objectFromString(String value) {
-        Type listType = new TypeToken<Object>() {
-        }.getType();
-        return new Gson().fromJson(value, listType);
-    }
-
-    @TypeConverter
-    public static String stringFromObject(Object object) {
-        Gson gson = new Gson();
-        String json = gson.toJson(object);
-        return json;
-    }
-
-    @TypeConverter
-    public static List<String> stringsfromString(String value) {
-        Type listType = new TypeToken<List<String>>() {
-        }.getType();
-        return new Gson().fromJson(value, listType);
-    }
-
-    @TypeConverter
-    public static String stringfromStrings(List<String> list) {
-        Gson gson = new Gson();
-        String json = gson.toJson(list);
-        return json;
-    }
-
-    @TypeConverter
-    public static List<MessMenu> messMenusfromString(String value) {
-        Type listType = new TypeToken<List<MessMenu>>() {
-        }.getType();
-        return new Gson().fromJson(value, listType);
-    }
-
-    @TypeConverter
-    public static String stringfromMessMenus(List<MessMenu> list) {
-        Gson gson = new Gson();
-        String json = gson.toJson(list);
-        return json;
-    }
-}
\ No newline at end of file

app/src/main/java/app/insti/data/DbDao.java

-package app.insti.data;
-
-import android.arch.persistence.room.Dao;
-import android.arch.persistence.room.Delete;
-import android.arch.persistence.room.Insert;
-import android.arch.persistence.room.Query;
-import android.arch.persistence.room.Update;
-
-import java.util.List;
-
-@Dao
-public interface DbDao {
-    @Query("SELECT * FROM events")
-    List<Event> getAllEvents();
-
-    @Query("SELECT * FROM events WHERE user_ues <> 0")
-    List<Event> getFollowingEvents();
-
-    @Query("SELECT * FROM bodies")
-    List<Body> getAllBodies();
-
-    @Query("SELECT * FROM venues")
-    List<Venue> getAllVenues();
-
-    @Query("SELECT * FROM users")
-    List<User> getAllUsers();
-
-    @Query("SELECT * FROM roles")
-    List<Role> getAllRoles();
-
-    @Query("SELECT * FROM placementBlogPosts")
-    List<PlacementBlogPost> getAllPlacementBlogPosts();
-
-    @Query("SELECT * FROM trainingBlogPosts")
-    List<TrainingBlogPost> getAllTrainingBlogPosts();
-
-    @Query("SELECT * FROM hostelMessMenus")
-    List<HostelMessMenu> getAllHostelMessMenus();
-
-    @Query("SELECT * FROM news")
-    List<NewsArticle> getAllNewsArticles();
-
-    @Query("SELECT COUNT(*) from events")
-    int countEvents();
-
-    @Query("SELECT * FROM bodies WHERE id == :id")
-    public Body[] getBody(String id);
-
-    @Query("SELECT COUNT(*) from venues")
-    int countVenues();
-
-    @Query("SELECT COUNT(*) from bodies")
-    int countBodies();
-
-    @Query("SELECT COUNT(*) from users")
-    int countUsers();
-
-    @Query("SELECT COUNT(*) from roles")
-    int countRoles();
-
-    @Query("SELECT COUNT(*) from hostelMessMenus")
-    int countHostelMessMenus();
-
-    @Insert
-    void insertEvents(List<Event> events);
-
-    @Insert
-    void insertEvent(Event event);
-
-    @Update
-    void updateEvent(Event event);
-
-    @Insert
-    void insertBodies(List<Body> bodies);
-
-    @Insert
-    void insertBody(Body body);
-
-    @Update
-    void updateBody(Body body);
-
-    @Insert
-    void insertVenues(List<Venue> venues);
-
-    @Insert
-    void insertVenue(Venue venue);
-
-    @Insert
-    void insertUsers(List<User> users);
-
-    @Insert
-    void insertUser(User user);
-
-    @Insert
-    void insertRoles(List<Role> roles);
-
-    @Insert
-    void insertRole(Role role);
-
-    @Insert
-    void insertPlacementBlogPost(PlacementBlogPost post);
-
-    @Insert
-    void insertPlacementBlogPosts(List<PlacementBlogPost> posts);
-
-    @Insert
-    void insertTrainingBlogPost(TrainingBlogPost post);
-
-    @Insert
-    void insertTrainingBlogPosts(List<TrainingBlogPost> posts);
-
-    @Insert
-    void insertHostelMessMenu(HostelMessMenu hostelMessMenu);
-
-    @Insert
-    void insertHostelMessMenus(List<HostelMessMenu> hostelMessMenus);
-
-    @Insert
-    void insertNewsArticle(NewsArticle newsArticle);
-
-    @Insert
-    void insertNewsArticles(List<NewsArticle> newsArticles);
-
-    @Delete
-    void deleteEvent(Event event);
-
-    @Delete
-    void deleteVenue(Venue venue);
-
-    @Delete
-    void deleteBody(Body body);
-
-    @Delete
-    void deleteUser(User user);
-
-    @Delete
-    void deleteRole(Role role);
-
-    @Query("DELETE from events")
-    void deleteEvents();
-
-    @Query("DELETE from venues")
-    void deleteVenues();
-
-    @Query("DELETE from bodies")
-    void deleteBodies();
-
-    @Query("DELETE from users")
-    void deleteUsers();
-
-    @Query("DELETE from roles")
-    void deleteRoles();
-
-    @Query("DELETE from placementBlogPosts")
-    void deletePlacementBlogPosts();
-
-    @Query("DELETE from trainingBlogPosts")
-    void deleteTrainingBlogPosts();
-
-    @Query("DELETE from hostelMessMenus")
-    void deleteHostelMessMenus();
-
-    @Query("DELETE from news")
-    void deleteNewsArticles();
-}

app/src/main/java/app/insti/data/Event.java

 package app.insti.data;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.Ignore;
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.Gson;
@@ -12,61 +8,56 @@ import com.google.gson.annotations.SerializedName;
 import java.sql.Timestamp;
 import java.util.List;
 
-@Entity(tableName = "events")
-
 public class Event {
     @NonNull()
-    @PrimaryKey()
-    @ColumnInfo(name = "id")
     @SerializedName("id")
     String eventID;
-    @ColumnInfo(name = "str_id")
+
     @SerializedName("str_id")
     String eventStrID;
-    @ColumnInfo(name = "name")
+
     @SerializedName("name")
     String eventName;
-    @ColumnInfo(name = "description")
+
     @SerializedName("description")
     String eventDescription;
-    @ColumnInfo(name = "image_url")
+
     @SerializedName("image_url")
     String eventImageURL;
-    @ColumnInfo(name = "start_time")
+
     @SerializedName("start_time")
     Timestamp eventStartTime;
-    @ColumnInfo(name = "end_time")
+
     @SerializedName("end_time")
     Timestamp eventEndTime;
-    @ColumnInfo(name = "all_day")
+
     @SerializedName("all_day")
     boolean allDayEvent;
-    @ColumnInfo(name = "venues")
+
     @SerializedName("venues")
     List<Venue> eventVenues;
-    @ColumnInfo(name = "bodies")
+
     @SerializedName("bodies")
     List<Body> eventBodies;
-    @ColumnInfo(name = "interested_count")
+
     @SerializedName("interested_count")
     int eventInterestedCount;
-    @ColumnInfo(name = "going_count")
+
     @SerializedName("going_count")
     int eventGoingCount;
-    @ColumnInfo(name = "interested")
+
     @SerializedName("interested")
     List<User> eventInterested;
-    @ColumnInfo(name = "going")
+
     @SerializedName("going")
     List<User> eventGoing;
-    @ColumnInfo(name = "website_url")
+
     @SerializedName("website_url")
     String eventWebsiteURL;
-    @ColumnInfo(name = "user_ues")
+
     @SerializedName("user_ues")
     int eventUserUes;
 
-    @Ignore
     boolean eventBigImage = false;
 
     public Event(String eventID, String eventStrID, String eventName, String eventDescription, String eventImageURL, Timestamp eventStartTime, Timestamp eventEndTime, boolean allDayEvent, List<Venue> eventVenues, List<Body> eventBodies, int eventInterestedCount, int eventGoingCount, List<User> eventInterested, List<User> eventGoing, String eventWebsiteURL, int eventUserUes) {
@@ -121,6 +112,10 @@ public class Event {
     }
 
     public String getEventImageURL() {
+        // Fallback to body image if event has no image
+        if (eventImageURL == null) {
+            return getEventBodies().get(0).getBodyImageURL();
+        }
         return eventImageURL;
     }
 

app/src/main/java/app/insti/data/HostelMessMenu.java

 package app.insti.data;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.annotations.SerializedName;
 
 import java.util.List;
 
-@Entity(tableName = "hostelMessMenus")
 public class HostelMessMenu {
     @NonNull()
-    @PrimaryKey()
-    @ColumnInfo(name = "id")
     @SerializedName("id")
     private String menuID;
 
-    @ColumnInfo(name = "name")
     @SerializedName("name")
     private String name;
 
-    @ColumnInfo(name = "short_name")
     @SerializedName("short_name")
     private String shortName;
 
-    @ColumnInfo(name = "long_name")
     @SerializedName("long_name")
     private String longName;
 
-    @ColumnInfo(name = "mess")
     @SerializedName("mess")
     private List<MessMenu> messMenus;
 

app/src/main/java/app/insti/data/MessMenu.java

 package app.insti.data;
 
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.annotations.SerializedName;
 
 public class MessMenu {
     @NonNull()
-    @PrimaryKey()
     @SerializedName("id")
     private String mealID;
 

app/src/main/java/app/insti/data/NewsArticle.java

 package app.insti.data;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.annotations.SerializedName;
 
 import java.sql.Timestamp;
 
-@Entity(tableName = "news")
-
 public class NewsArticle {
     @NonNull()
-    @PrimaryKey()
-    @ColumnInfo(name = "id")
     @SerializedName("id")
     private String articleID;
 
-    @ColumnInfo(name = "link")
     @SerializedName("link")
     private String link;
 
-    @ColumnInfo(name = "title")
     @SerializedName("title")
     private String title;
 
-    @ColumnInfo(name = "content")
     @SerializedName("content")
     private String content;
 
-    @ColumnInfo(name = "published")
     @SerializedName("published")
     private Timestamp published;
 
-    @ColumnInfo(name = "body")
     @SerializedName("body")
     private Body body;
 

app/src/main/java/app/insti/data/Notification.java

 package app.insti.data;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.annotations.SerializedName;
 
-@Entity(tableName = "news")
-
 public class Notification {
     @NonNull()
-    @PrimaryKey()
-    @ColumnInfo(name = "id")
+
     @SerializedName("id")
     private Integer notificationId;
 
-    @ColumnInfo(name = "verb")
     @SerializedName("verb")
     private String notificationVerb;
 
-    @ColumnInfo(name = "unread")
     @SerializedName("unread")
     private boolean notificationUnread;
 
-    @ColumnInfo(name = "actor_type")
     @SerializedName("actor_type")
     private String notificationActorType;
 
-    @ColumnInfo(name = "actor")
     @SerializedName("actor")
     private Object notificationActor;
 

app/src/main/java/app/insti/data/PlacementBlogPost.java

 package app.insti.data;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.annotations.SerializedName;
 
 import java.sql.Timestamp;
 
-@Entity(tableName = "placementBlogPosts")
-
 public class PlacementBlogPost {
     @NonNull()
-    @PrimaryKey()
-    @ColumnInfo(name = "id")
     @SerializedName("id")
     private String postID;
 
-    @ColumnInfo(name = "link")
     @SerializedName("link")
     private String link;
 
-    @ColumnInfo(name = "title")
     @SerializedName("title")
     private String title;
 
-    @ColumnInfo(name = "content")
     @SerializedName("content")
     private String content;
 
-    @ColumnInfo(name = "published")
     @SerializedName("published")
     private Timestamp published;
 

app/src/main/java/app/insti/data/Role.java

 package app.insti.data;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.annotations.SerializedName;
 
 import java.util.List;
 
-@Entity(tableName = "roles")
-
-
 public class Role {
     @NonNull()
-    @PrimaryKey()
-    @ColumnInfo(name = "id")
     @SerializedName("id")
     String roleID;
 
-    @ColumnInfo(name = "name")
     @SerializedName("name")
     String roleName;
 
-    @ColumnInfo(name = "inheritable")
     @SerializedName("inheritable")
     boolean roleInheritable;
 
-    @ColumnInfo(name = "body")
     @SerializedName("body")
     String roleBody;
 
-    @ColumnInfo(name = "body_detail")
     @SerializedName("body_detail")
     Body roleBodyDetails;
 
-    @ColumnInfo(name = "bodies")
     @SerializedName("bodies")
     List<Body> roleBodies;
 
-
-    @ColumnInfo(name = "permissions")
     @SerializedName("permissions")
     List<String> rolePermissions;
 
-    @ColumnInfo(name = "users")
     @SerializedName("users")
     List<String> roleUsers;
 
-    @ColumnInfo(name = "users_detail")
     @SerializedName("users_detail")
     List<User> roleUsersDetail;
 

app/src/main/java/app/insti/data/TrainingBlogPost.java

 package app.insti.data;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.annotations.SerializedName;
 
 import java.sql.Timestamp;
 
-@Entity(tableName = "trainingBlogPosts")
-
 public class TrainingBlogPost {
     @NonNull()
-    @PrimaryKey()
-    @ColumnInfo(name = "id")
     @SerializedName("id")
     private String postID;
 
-    @ColumnInfo(name = "link")
     @SerializedName("link")
     private String link;
 
-    @ColumnInfo(name = "title")
     @SerializedName("title")
     private String title;
 
-    @ColumnInfo(name = "content")
     @SerializedName("content")
     private String content;
 
-    @ColumnInfo(name = "published")
     @SerializedName("published")
     private Timestamp published;
 

app/src/main/java/app/insti/data/User.java

 package app.insti.data;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.Ignore;
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.Gson;
@@ -11,66 +7,59 @@ import com.google.gson.annotations.SerializedName;
 
 import java.util.List;
 
-@Entity(tableName = "users")
 public class User {
     @NonNull()
-    @PrimaryKey()
-    @ColumnInfo(name = "id")
     @SerializedName("id")
     String userID;
-    @ColumnInfo(name = "name")
+
     @SerializedName("name")
     String userName;
-    @ColumnInfo(name = "profile_pic")
+
     @SerializedName("profile_pic")
     String userProfilePictureUrl;
-    @ColumnInfo(name = "events_interested")
+
     @SerializedName("events_interested")
     List<Event> userInterestedEvents;
-    @ColumnInfo(name = "events_going")
+
     @SerializedName("events_going")
     List<Event> userGoingEvents;
-    @ColumnInfo(name = "email")
+
     @SerializedName("email")
     String userEmail;
-    @ColumnInfo(name = "roll_no")
+
     @SerializedName("roll_no")
     String userRollNumber;
-    @ColumnInfo(name = "contact_no")
+
     @SerializedName("contact_no")
     String userContactNumber;
-    @ColumnInfo(name = "about")
+
     @SerializedName("about")
     String userAbout;
-    @ColumnInfo(name = "followed_bodies")
+
     @SerializedName("followed_bodies")
     List<Body> userFollowedBodies;
-    @ColumnInfo(name = "followed_bodies_id")
+
     @SerializedName("followed_bodies_id")
     List<String> userFollowedBodiesID;
-    @ColumnInfo(name = "roles")
+
     @SerializedName("roles")
     List<Role> userRoles;
-    @ColumnInfo(name = "institute_roles")
+
     @SerializedName("institute_roles")
     List<Role> userInstituteRoles;
-    @ColumnInfo(name = "former_roles")
+
     @SerializedName("former_roles")
     List<Role> userFormerRoles;
-    @ColumnInfo(name = "website_url")
+
     @SerializedName("website_url")
     String userWebsiteURL;
-    @ColumnInfo(name = "ldap_id")
+
     @SerializedName("ldap_id")
     String userLDAPId;
-    @ColumnInfo(name = "hostel")
+
     @SerializedName("hostel")
     String hostel;
 
-    /**
-     * Not in database
-     */
-    @Ignore
     String currentRole;
 
     public User(@NonNull String userID, String userName, String userProfilePictureUrl, List<Event> userInterestedEvents, List<Event> userGoingEvents, String userEmail, String userRollNumber, String userContactNumber, String userAbout, List<Body> userFollowedBodies, List<String> userFollowedBodiesID, List<Role> userRoles, List<Role> userInstituteRoles, List<Role> userFormerRoles, String userWebsiteURL, String userLDAPId, String hostel) {

app/src/main/java/app/insti/data/Venue.java

 package app.insti.data;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.PrimaryKey;
 import android.support.annotation.NonNull;
 
 import com.google.gson.annotations.SerializedName;
 
-@Entity(tableName = "venues")
 public class Venue {
     @NonNull()
-    @PrimaryKey()
-    @ColumnInfo(name = "id")
     @SerializedName("id")
     String venueID;
-    @ColumnInfo(name = "name")
+
     @SerializedName("name")
     String venueName;
-    @ColumnInfo(name = "short_name")
+
     @SerializedName("short_name")
     String venueShortName;
-    @ColumnInfo(name = "description")
+
     @SerializedName("description")
     String venueDescripion;
-    @ColumnInfo(name = "parent")
+
     @SerializedName("parent")
     String venueParentId;
-    @ColumnInfo(name = "parent_relation")
+
     @SerializedName("parent_relation")
     String venueParentRelation;
-    @ColumnInfo(name = "group_id")
+
     @SerializedName("group_id")
     Integer venueGroupId;
-    @ColumnInfo(name = "pixel_x")
+
     @SerializedName("pixel_x")
     Integer venuePixelX;
-    @ColumnInfo(name = "pixel_y")
+
     @SerializedName("pixel_y")
     Integer venuePixelY;
-    @ColumnInfo(name = "reusable")
+
     @SerializedName("reusable")
     Boolean venueReusable;
-    @ColumnInfo(name = "lat")
+
     @SerializedName("lat")
     double venueLatitude;
-    @ColumnInfo(name = "lng")
+
     @SerializedName("lng")
     double venueLongitude;
 

app/src/main/java/app/insti/fragment/AddEventFragment.java

@@ -167,7 +167,7 @@ public class AddEventFragment extends BaseFragment {
             if (url.contains("/event/")) {
                 url = url.substring(url.lastIndexOf("/") + 1);
 
-                RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
                 retrofitInterface.getEvent(((MainActivity) getActivity()).getSessionIDHeader(), url).enqueue(new Callback<Event>() {
                     @Override
                     public void onResponse(Call<Event> call, Response<Event> response) {
@@ -185,7 +185,7 @@ public class AddEventFragment extends BaseFragment {
             } else if (url.contains("/org/")) {
                 url = url.substring(url.lastIndexOf("/") + 1);
 
-                RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
                 retrofitInterface.getBody(((MainActivity) getActivity()).getSessionIDHeader(), url).enqueue(new Callback<Body>() {
                     @Override
                     public void onResponse(Call<Body> call, Response<Body> response) {

app/src/main/java/app/insti/fragment/BodyFragment.java

@@ -45,8 +45,6 @@ import app.insti.adapter.BodyAdapter;
 import app.insti.adapter.FeedAdapter;
 import app.insti.adapter.UserAdapter;
 import app.insti.api.RetrofitInterface;
-import app.insti.api.ServiceGenerator;
-import app.insti.data.AppDatabase;
 import app.insti.data.Body;
 import app.insti.data.Event;
 import app.insti.data.Role;
@@ -67,7 +65,6 @@ public class BodyFragment extends BackHandledFragment {
 
 
     String TAG = "BodyFragment";
-    private AppDatabase appDatabase;
     // TODO: Rename and change types of parameters
     private Body min_body;
     private SwipeRefreshLayout bodySwipeRefreshLayout;
@@ -133,13 +130,11 @@ public class BodyFragment extends BackHandledFragment {
 
         /* Initialize */
         bodyDisplayed = false;
-        appDatabase = AppDatabase.getAppDatabase(getContext());
         body = min_body;
         displayBody();
 
         /* Check if full body was passed */
         if (min_body.getBodyDescription() == null) {
-            new getDbBody().execute(min_body.getBodyID());
             updateBody();
         }
 
@@ -157,15 +152,13 @@ public class BodyFragment extends BackHandledFragment {
     }
 
     private void updateBody() {
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getBody(((MainActivity) getActivity()).getSessionIDHeader(), min_body.getBodyID()).enqueue(new Callback<Body>() {
             @Override
             public void onResponse(Call<Body> call, Response<Body> response) {
                 if (response.isSuccessful()) {
                     Body bodyResponse = response.body();
 
-                    new updateDbBody().execute(bodyResponse);
-
                     if (!bodyDisplayed) {
                         body = bodyResponse;
                         displayBody();
@@ -236,13 +229,12 @@ public class BodyFragment extends BackHandledFragment {
         followButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
                 retrofitInterface.updateBodyFollowing(((MainActivity) getActivity()).getSessionIDHeader(), body.getBodyID(), body.getBodyUserFollows() ? 0 : 1).enqueue(new Callback<Void>() {
                     @Override
                     public void onResponse(Call<Void> call, Response<Void> response) {
                         if (response.isSuccessful()) {
                             body.setBodyUserFollows(!body.getBodyUserFollows());
-                            new updateDbBody().execute(body);
                             followButton.setBackgroundColor(getResources().getColor(body.getBodyUserFollows() ? R.color.colorAccent : R.color.colorWhite));
                         }
                     }
@@ -544,31 +536,4 @@ public class BodyFragment extends BackHandledFragment {
         startScaleFinal = startScale;
         zoomMode = true;
     }
-
-    private class updateDbBody extends AsyncTask<Body, Void, Integer> {
-        @Override
-        protected Integer doInBackground(Body... body) {
-            if (appDatabase.dbDao().getBody(body[0].getBodyID()).length > 0) {
-                appDatabase.dbDao().updateBody(body[0]);
-            } else {
-                appDatabase.dbDao().insertBody(body[0]);
-            }
-            return 1;
-        }
-    }
-
-    private class getDbBody extends AsyncTask<String, Void, Body[]> {
-        @Override
-        protected Body[] doInBackground(String... id) {
-            return appDatabase.dbDao().getBody(min_body.getBodyID());
-        }
-
-        @Override
-        protected void onPostExecute(Body[] result) {
-            if (result.length > 0 && !bodyDisplayed) {
-                body = result[0];
-                displayBody();
-            }
-        }
-    }
 }

app/src/main/java/app/insti/fragment/CalendarFragment.java

@@ -117,7 +117,7 @@ public class CalendarFragment extends BaseFragment {
         final String oneMonthBack = isoFormatter.format(oneMonthBackDate).toString();
         final String oneMonthOn = isoFormatter.format(oneMonthOnDate).toString();
 
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getEventsBetweenDates(((MainActivity) getActivity()).getSessionIDHeader(), oneMonthBack, oneMonthOn).enqueue(new Callback<NewsFeedResponse>() {
             @Override
             public void onResponse(Call<NewsFeedResponse> call, Response<NewsFeedResponse> response) {

app/src/main/java/app/insti/fragment/EventFragment.java

@@ -49,8 +49,6 @@ import app.insti.ShareURLMaker;
 import app.insti.activity.MainActivity;
 import app.insti.adapter.BodyAdapter;
 import app.insti.api.RetrofitInterface;
-import app.insti.api.ServiceGenerator;
-import app.insti.data.AppDatabase;
 import app.insti.data.Body;
 import app.insti.data.Event;
 import app.insti.data.Venue;
@@ -71,7 +69,6 @@ public class EventFragment extends BackHandledFragment {
     ImageButton shareEventButton;
     RecyclerView bodyRecyclerView;
     String TAG = "EventFragment";
-    private AppDatabase appDatabase;
 
     // Hold a reference to the current animator,
     // so that it can be canceled mid-way.
@@ -135,9 +132,6 @@ public class EventFragment extends BackHandledFragment {
     public void onStart() {
         super.onStart();
 
-        /* Initialize */
-        appDatabase = AppDatabase.getAppDatabase(getContext());
-
         Bundle bundle = getArguments();
         String eventJson = bundle.getString(Constants.EVENT_JSON);
         Log.d(TAG, "onStart: " + eventJson);
@@ -161,11 +155,6 @@ public class EventFragment extends BackHandledFragment {
         webEventButton = getActivity().findViewById(R.id.web_event_button);
         shareEventButton = getActivity().findViewById(R.id.share_event_button);
 
-        // Fallback to image of first body if event has no image
-        if (event.getEventImageURL() == null) {
-            event.setEventImageURL(event.getEventBodies().get(0).getBodyImageURL());
-        }
-
         Picasso.get().load(event.getEventImageURL()).into(eventPicture);
         eventTitle.setText(event.getEventName());
         Markwon.setMarkdown(eventDescription, event.getEventDescription());
@@ -299,7 +288,7 @@ public class EventFragment extends BackHandledFragment {
             @Override
             public void onClick(View view) {
                 final int endStatus = event.getEventUserUes() == status ? 0 : status;
-                RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
                 retrofitInterface.updateUserEventStatus(((MainActivity) getActivity()).getSessionIDHeader(), event.getEventID(), endStatus).enqueue(new Callback<Void>() {
                     @Override
                     public void onResponse(Call<Void> call, Response<Void> response) {
@@ -329,7 +318,6 @@ public class EventFragment extends BackHandledFragment {
                             }
 
                             event.setEventUserUes(endStatus);
-                            new updateDbEvent().execute(event);
                             setFollowButtonColors(endStatus);
                         }
                     }
@@ -479,12 +467,4 @@ public class EventFragment extends BackHandledFragment {
         set.start();
         mCurrentAnimator = set;
     }
-
-    private class updateDbEvent extends AsyncTask<Event, Void, Integer> {
-        @Override
-        protected Integer doInBackground(Event... event) {
-            appDatabase.dbDao().updateEvent(event[0]);
-            return 1;
-        }
-    }
 }

app/src/main/java/app/insti/fragment/ExploreFragment.java

@@ -87,7 +87,7 @@ public class ExploreFragment extends Fragment {
 
         // Get all bodies
         if (allBodies.size() == 0) {
-            RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+            RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
             retrofitInterface.getAllBodies(sessionId).enqueue(new Callback<List<Body>>() {
                 @Override
                 public void onResponse(Call<List<Body>> call, Response<List<Body>> response) {
@@ -141,7 +141,7 @@ public class ExploreFragment extends Fragment {
         getView().findViewById(R.id.loadingPanel).setVisibility(View.VISIBLE);
 
         // Make request
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.search(sessionId, query).enqueue(new Callback<ExploreResponse>() {
             @Override
             public void onResponse(Call<ExploreResponse> call, Response<ExploreResponse> response) {

app/src/main/java/app/insti/fragment/FeedFragment.java

@@ -2,7 +2,6 @@ package app.insti.fragment;
 
 
 import android.app.Activity;
-import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.design.widget.FloatingActionButton;
 import android.support.v4.app.Fragment;
@@ -27,9 +26,7 @@ import app.insti.R;
 import app.insti.activity.MainActivity;
 import app.insti.adapter.FeedAdapter;
 import app.insti.api.RetrofitInterface;
-import app.insti.api.ServiceGenerator;
 import app.insti.api.model.NewsFeedResponse;
-import app.insti.data.AppDatabase;
 import app.insti.data.Event;
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -42,7 +39,6 @@ public class FeedFragment extends BaseFragment {
 
     private RecyclerView feedRecyclerView;
     private SwipeRefreshLayout feedSwipeRefreshLayout;
-    private AppDatabase appDatabase;
     private FloatingActionButton fab;
     private boolean freshEventsDisplayed = false;
     LinearLayoutManager mLayoutManager;
@@ -78,8 +74,6 @@ public class FeedFragment extends BaseFragment {
     @Override
     public void onStart() {
         super.onStart();
-        appDatabase = AppDatabase.getAppDatabase(getContext());
-        new showEventsFromDB().execute();
         fab = (FloatingActionButton) getView().findViewById(R.id.fab);
         updateFeed();
     }
@@ -104,9 +98,9 @@ public class FeedFragment extends BaseFragment {
         }
     }
 
-
     private void updateFeed() {
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getNewsFeed("sessionid=" + getArguments().getString(Constants.SESSION_ID)).enqueue(new Callback<NewsFeedResponse>() {
             @Override
             public void onResponse(Call<NewsFeedResponse> call, Response<NewsFeedResponse> response) {
@@ -115,8 +109,6 @@ public class FeedFragment extends BaseFragment {
                     List<Event> events = newsFeedResponse.getEvents();
                     freshEventsDisplayed = true;
                     displayEvents(events);
-
-                    new updateDatabase().execute(events);
                 }
                 //Server Error
                 feedSwipeRefreshLayout.setRefreshing(false);
@@ -192,26 +184,4 @@ public class FeedFragment extends BaseFragment {
         if (view != null)
             view.setVisibility(View.GONE);
     }
-
-    private class updateDatabase extends AsyncTask<List<Event>, Void, Integer> {
-        @Override
-        protected Integer doInBackground(List<Event>... events) {
-            appDatabase.dbDao().deleteEvents();
-            appDatabase.dbDao().insertEvents(events[0]);
-            return 1;
-        }
-    }
-
-    private class showEventsFromDB extends AsyncTask<String, Void, List<Event>> {
-        @Override
-        protected List<Event> doInBackground(String... events) {
-            return appDatabase.dbDao().getAllEvents();
-        }
-
-        protected void onPostExecute(List<Event> result) {
-            if (!freshEventsDisplayed) {
-                displayEvents(result);
-            }
-        }
-    }
 }

app/src/main/java/app/insti/fragment/MapFragment.java

@@ -90,8 +90,6 @@ import app.insti.Constants;
 import app.insti.R;
 import app.insti.activity.MainActivity;
 import app.insti.api.RetrofitInterface;
-import app.insti.api.ServiceGenerator;
-import app.insti.data.AppDatabase;
 import app.insti.data.Venue;
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -129,7 +127,6 @@ public class MapFragment extends Fragment implements TextWatcher,
     public ImageButton addMarkerIcon;
     public SoundPool soundPool;
     public int[] soundPoolIds;
-    private AppDatabase appDatabase;
     private SettingsManager settingsManager;
     private FuzzySearchAdapter adapter;
     private ExpandableListAdapter expAdapter;
@@ -223,21 +220,18 @@ public class MapFragment extends Fragment implements TextWatcher,
         toolbar.setTitle("InstiMap");
 
         /* Initialize */
-        appDatabase = AppDatabase.getAppDatabase(getContext());
         editText = (EditText) getView().findViewById(R.id.search);
         setFonts();
 
         getAPILocations();
-        new showLocationsFromDB().execute();
     }
 
     private void getAPILocations() {
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getAllVenues().enqueue(new Callback<List<Venue>>() {
             @Override
             public void onResponse(Call<List<Venue>> call, Response<List<Venue>> response) {
                 if (response.isSuccessful()) {
-                    new updateDatabase().execute(response.body());
                     if (!locationsShown) {
                         setupWithData(response.body());
                         locationsShown = true;
@@ -1026,29 +1020,6 @@ public class MapFragment extends Fragment implements TextWatcher,
         });
     }
 
-    private class updateDatabase extends AsyncTask<List<Venue>, Void, Integer> {
-        @Override
-        protected Integer doInBackground(List<Venue>... venues) {
-            appDatabase.dbDao().deleteVenues();
-            appDatabase.dbDao().insertVenues(venues[0]);
-            return 1;
-        }
-    }
-
-    private class showLocationsFromDB extends AsyncTask<String, Void, List<Venue>> {
-        @Override
-        protected List<Venue> doInBackground(String... events) {
-            return appDatabase.dbDao().getAllVenues();
-        }
-
-        protected void onPostExecute(List<Venue> result) {
-            if (!locationsShown && result.size() > 0) {
-                setupWithData(result);
-                locationsShown = true;
-            }
-        }
-    }
-
     private class CustomListAdapter extends ArrayAdapter<String> {
 
         private Context mContext;

app/src/main/java/app/insti/fragment/MessMenuFragment.java

@@ -24,10 +24,9 @@ import java.util.Locale;
 import app.insti.ActivityBuffer;
 import app.insti.Constants;
 import app.insti.R;
+import app.insti.activity.MainActivity;
 import app.insti.adapter.MessMenuAdapter;
 import app.insti.api.RetrofitInterface;
-import app.insti.api.ServiceGenerator;
-import app.insti.data.AppDatabase;
 import app.insti.data.HostelMessMenu;
 import app.insti.data.MessMenu;
 import retrofit2.Call;
@@ -41,7 +40,6 @@ public class MessMenuFragment extends BaseFragment {
 
     private RecyclerView messMenuRecyclerView;
     private SwipeRefreshLayout messMenuSwipeRefreshLayout;
-    private AppDatabase appDatabase;
     private Spinner hostelSpinner;
     private String hostel;
 
@@ -106,14 +104,11 @@ public class MessMenuFragment extends BaseFragment {
     }
 
     private void displayMenu(final String hostel) {
-        appDatabase = AppDatabase.getAppDatabase(getContext());
-        new showMessMenuFromDB().execute(hostel);
-
         updateMessMenu(hostel);
     }
 
     private void updateMessMenu(final String hostel) {
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getInstituteMessMenu("sessionid=" + getArguments().getString(Constants.SESSION_ID)).enqueue(new Callback<List<HostelMessMenu>>() {
             @Override
             public void onResponse(Call<List<HostelMessMenu>> call, Response<List<HostelMessMenu>> response) {
@@ -122,8 +117,6 @@ public class MessMenuFragment extends BaseFragment {
                     HostelMessMenu hostelMessMenu = findMessMenu(instituteMessMenu, hostel);
                     if(hostelMessMenu != null)
                         displayMessMenu(hostelMessMenu);
-
-                    new updateDatabase().execute(instituteMessMenu);
                 }
                 //Server Error
                 messMenuSwipeRefreshLayout.setRefreshing(false);
@@ -186,27 +179,4 @@ public class MessMenuFragment extends BaseFragment {
         });
         getActivity().findViewById(R.id.loadingPanel).setVisibility(View.GONE);
     }
-
-    private class updateDatabase extends AsyncTask<List<HostelMessMenu>, Void, Integer> {
-        @Override
-        protected Integer doInBackground(List<HostelMessMenu>... menus) {
-            appDatabase.dbDao().deleteHostelMessMenus();
-            appDatabase.dbDao().insertHostelMessMenus(menus[0]);
-            return 1;
-        }
-    }
-
-    public class showMessMenuFromDB extends AsyncTask<String, Void, HostelMessMenu> {
-
-        @Override
-        protected HostelMessMenu doInBackground(String... strings) {
-            return findMessMenu(appDatabase.dbDao().getAllHostelMessMenus(), strings[0]);
-        }
-
-        @Override
-        protected void onPostExecute(HostelMessMenu hostelMessMenu) {
-            if (hostelMessMenu != null)
-                displayMessMenu(hostelMessMenu);
-        }
-    }
 }

app/src/main/java/app/insti/fragment/MyEventsFragment.java

@@ -26,8 +26,12 @@ import app.insti.ItemClickListener;
 import app.insti.R;
 import app.insti.activity.MainActivity;
 import app.insti.adapter.FeedAdapter;
-import app.insti.data.AppDatabase;
+import app.insti.api.RetrofitInterface;
 import app.insti.data.Event;
+import app.insti.data.User;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
 
 /**
  * A simple {@link Fragment} subclass.
@@ -36,7 +40,6 @@ public class MyEventsFragment extends BaseFragment {
 
     private RecyclerView myEventsFeedRecyclerView;
     private SwipeRefreshLayout myEventsFeedSwipeRefreshLayout;
-    private AppDatabase appDatabase;
     private FloatingActionButton fab;
 
     public MyEventsFragment() {
@@ -71,8 +74,7 @@ public class MyEventsFragment extends BaseFragment {
             fab.setVisibility(View.VISIBLE);
         }
 
-        appDatabase = AppDatabase.getAppDatabase(getContext());
-        new showEvents().execute();
+        updateOnRefresh();
 
         myEventsFeedSwipeRefreshLayout = getActivity().findViewById(R.id.my_events_feed_swipe_refresh_layout);
         myEventsFeedSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@@ -85,9 +87,21 @@ public class MyEventsFragment extends BaseFragment {
     }
 
     private void updateOnRefresh() {
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
+        retrofitInterface.getUserMe(((MainActivity)getActivity()).getSessionIDHeader()).enqueue(new Callback<User>() {
+            @Override
+            public void onResponse(Call<User> call, Response<User> response) {
+                if (response.isSuccessful()) {
+                    User user = response.body();
+                    List<Event> events = user.getUserGoingEvents();
+                    events.addAll(user.getUserInterestedEvents());
+                    displayEvents(events);
+                }
+            }
 
-        new showEvents().execute();
-
+            @Override
+            public void onFailure(Call<User> call, Throwable t) {}
+        });
     }
 
     private void displayEvents(final List<Event> events) {
@@ -126,16 +140,4 @@ public class MyEventsFragment extends BaseFragment {
 
         getActivity().findViewById(R.id.loadingPanel).setVisibility(View.GONE);
     }
-
-    private class showEvents extends AsyncTask<String, Void, List<Event>> {
-
-        @Override
-        protected List<Event> doInBackground(String... events) {
-            return appDatabase.dbDao().getFollowingEvents();
-        }
-
-        protected void onPostExecute(List<Event> result) {
-            displayEvents(result);
-        }
-    }
 }
\ No newline at end of file

app/src/main/java/app/insti/fragment/NewsFragment.java

@@ -30,8 +30,6 @@ import app.insti.R;
 import app.insti.activity.MainActivity;
 import app.insti.adapter.NewsAdapter;
 import app.insti.api.RetrofitInterface;
-import app.insti.api.ServiceGenerator;
-import app.insti.data.AppDatabase;
 import app.insti.data.NewsArticle;
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -45,7 +43,6 @@ public class NewsFragment extends BaseFragment {
     public static boolean showLoader = true;
     private RecyclerView newsRecyclerView;
     private SwipeRefreshLayout newsSwipeRefreshLayout;
-    private AppDatabase appDatabase;
     private boolean freshNewsDisplayed = false;
     private String searchQuery;
 
@@ -70,9 +67,6 @@ public class NewsFragment extends BaseFragment {
 
         setHasOptionsMenu(true);
 
-        appDatabase = AppDatabase.getAppDatabase(getContext());
-        new NewsFragment.showNewsFromDB().execute();
-
         updateNews();
 
         newsSwipeRefreshLayout = getActivity().findViewById(R.id.news_swipe_refresh_layout);
@@ -85,7 +79,7 @@ public class NewsFragment extends BaseFragment {
     }
 
     private void updateNews() {
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getNews("sessionid=" + getArguments().getString(Constants.SESSION_ID), 0, 20, searchQuery).enqueue(new Callback<List<NewsArticle>>() {
             @Override
             public void onResponse(Call<List<NewsArticle>> call, Response<List<NewsArticle>> response) {
@@ -93,8 +87,6 @@ public class NewsFragment extends BaseFragment {
                     List<NewsArticle> articles = response.body();
                     freshNewsDisplayed = true;
                     displayNews(articles);
-
-                    new updateDatabase().execute(articles);
                 }
                 //Server Error
                 newsSwipeRefreshLayout.setRefreshing(false);
@@ -138,7 +130,7 @@ public class NewsFragment extends BaseFragment {
                                 if (((layoutManager.getChildCount() + layoutManager.findFirstVisibleItemPosition()) > (layoutManager.getItemCount() - 5)) && (!loading)) {
                                     loading = true;
                                     View v = getActivity().findViewById(R.id.training_feed_swipe_refresh_layout);
-                                    RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                                    RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
                                     retrofitInterface.getNews("sessionid=" + getArguments().getString(Constants.SESSION_ID), layoutManager.getItemCount(), 10, searchQuery).enqueue(new Callback<List<NewsArticle>>() {
                                         @Override
                                         public void onResponse(Call<List<NewsArticle>> call, Response<List<NewsArticle>> response) {
@@ -213,26 +205,4 @@ public class NewsFragment extends BaseFragment {
         updateNews();
         showLoader = false;
     }
-
-    private class updateDatabase extends AsyncTask<List<NewsArticle>, Void, Integer> {
-        @Override
-        protected Integer doInBackground(List<NewsArticle>... posts) {
-            appDatabase.dbDao().deleteNewsArticles();
-            appDatabase.dbDao().insertNewsArticles(posts[0]);
-            return 1;
-        }
-    }
-
-    private class showNewsFromDB extends AsyncTask<String, Void, List<NewsArticle>> {
-        @Override
-        protected List<NewsArticle> doInBackground(String... posts) {
-            return appDatabase.dbDao().getAllNewsArticles();
-        }
-
-        protected void onPostExecute(List<NewsArticle> result) {
-            if (!freshNewsDisplayed) {
-                displayNews(result);
-            }
-        }
-    }
 }

app/src/main/java/app/insti/fragment/NotificationsFragment.java

@@ -57,7 +57,7 @@ public class NotificationsFragment extends BaseFragment {
         Toolbar toolbar = getActivity().findViewById(R.id.toolbar);
         toolbar.setTitle("Notifications");
 
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getNotifications(((MainActivity) getActivity()).getSessionIDHeader()).enqueue(new Callback<List<Notification>>() {
             @Override
             public void onResponse(Call<List<Notification>> call, Response<List<Notification>> response) {
@@ -87,7 +87,7 @@ public class NotificationsFragment extends BaseFragment {
                 Notification notification = notifications.get(position);
 
                 /* Mark notification read */
-                RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
                 String sessId = ((MainActivity) getActivity()).getSessionIDHeader();
                 retrofitInterface.markNotificationRead(sessId, notification.getNotificationId()).enqueue(new Callback<Void>() {
                     @Override

app/src/main/java/app/insti/fragment/PlacementBlogFragment.java

@@ -30,8 +30,6 @@ import app.insti.R;
 import app.insti.activity.MainActivity;
 import app.insti.adapter.PlacementBlogAdapter;
 import app.insti.api.RetrofitInterface;
-import app.insti.api.ServiceGenerator;
-import app.insti.data.AppDatabase;
 import app.insti.data.PlacementBlogPost;
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -46,7 +44,6 @@ public class PlacementBlogFragment extends BaseFragment {
     private RecyclerView placementFeedRecyclerView;
     private PlacementBlogAdapter placementBlogAdapter;
     private SwipeRefreshLayout feedSwipeRefreshLayout;
-    private AppDatabase appDatabase;
     private boolean freshBlogDisplayed = false;
     private String searchQuery;
 
@@ -72,9 +69,6 @@ public class PlacementBlogFragment extends BaseFragment {
 
         setHasOptionsMenu(true);
 
-        appDatabase = AppDatabase.getAppDatabase(getContext());
-        new PlacementBlogFragment.showPlacementBlogFromDB().execute();
-
         updatePlacementFeed();
 
         feedSwipeRefreshLayout = getActivity().findViewById(R.id.placement_feed_swipe_refresh_layout);
@@ -87,7 +81,7 @@ public class PlacementBlogFragment extends BaseFragment {
     }
 
     private void updatePlacementFeed() {
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getPlacementBlogFeed("sessionid=" + getArguments().getString(Constants.SESSION_ID), 0, 20, searchQuery).enqueue(new Callback<List<PlacementBlogPost>>() {
             @Override
             public void onResponse(Call<List<PlacementBlogPost>> call, Response<List<PlacementBlogPost>> response) {
@@ -95,8 +89,6 @@ public class PlacementBlogFragment extends BaseFragment {
                     List<PlacementBlogPost> posts = response.body();
                     freshBlogDisplayed = true;
                     displayPlacementFeed(posts);
-
-                    new updateDatabase().execute(posts);
                 }
                 //Server Error
                 feedSwipeRefreshLayout.setRefreshing(false);
@@ -138,7 +130,7 @@ public class PlacementBlogFragment extends BaseFragment {
                                 if (((layoutManager.getChildCount() + layoutManager.findFirstVisibleItemPosition()) > (layoutManager.getItemCount() - 5)) && (!loading)) {
                                     loading = true;
                                     View v = getActivity().findViewById(R.id.placement_feed_swipe_refresh_layout);
-                                    RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                                    RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
                                     retrofitInterface.getPlacementBlogFeed("sessionid=" + getArguments().getString(Constants.SESSION_ID), layoutManager.getItemCount(), 10, searchQuery).enqueue(new Callback<List<PlacementBlogPost>>() {
                                         @Override
                                         public void onResponse(Call<List<PlacementBlogPost>> call, Response<List<PlacementBlogPost>> response) {
@@ -213,26 +205,4 @@ public class PlacementBlogFragment extends BaseFragment {
         updatePlacementFeed();
         showLoader = false;
     }
-
-    private class updateDatabase extends AsyncTask<List<PlacementBlogPost>, Void, Integer> {
-        @Override
-        protected Integer doInBackground(List<PlacementBlogPost>... posts) {
-            appDatabase.dbDao().deletePlacementBlogPosts();
-            appDatabase.dbDao().insertPlacementBlogPosts(posts[0]);
-            return 1;
-        }
-    }
-
-    private class showPlacementBlogFromDB extends AsyncTask<String, Void, List<PlacementBlogPost>> {
-        @Override
-        protected List<PlacementBlogPost> doInBackground(String... posts) {
-            return appDatabase.dbDao().getAllPlacementBlogPosts();
-        }
-
-        protected void onPostExecute(List<PlacementBlogPost> result) {
-            if (!freshBlogDisplayed) {
-                displayPlacementFeed(result);
-            }
-        }
-    }
 }

app/src/main/java/app/insti/fragment/SettingsFragment.java

@@ -58,7 +58,7 @@ public class SettingsFragment extends Fragment {
 
         populateViews();
 
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getUser("sessionid=" + getArguments().getString(Constants.SESSION_ID), userID).enqueue(new Callback<User>() {
             @Override
             public void onResponse(Call<User> call, Response<User> response) {
@@ -139,7 +139,7 @@ public class SettingsFragment extends Fragment {
             logoutButton.setOnClickListener(new View.OnClickListener() {
                 @Override
                 public void onClick(View v) {
-                    RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                    RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
                     retrofitInterface.logout("sessionid=" + getArguments().getString(Constants.SESSION_ID)).enqueue(new Callback<Void>() {
                         @Override
                         public void onResponse(Call<Void> call, Response<Void> response) {

app/src/main/java/app/insti/fragment/TrainingBlogFragment.java

@@ -30,8 +30,6 @@ import app.insti.R;
 import app.insti.activity.MainActivity;
 import app.insti.adapter.TrainingBlogAdapter;
 import app.insti.api.RetrofitInterface;
-import app.insti.api.ServiceGenerator;
-import app.insti.data.AppDatabase;
 import app.insti.data.TrainingBlogPost;
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -45,7 +43,6 @@ public class TrainingBlogFragment extends BaseFragment {
     public static boolean showLoader = true;
     private RecyclerView trainingFeedRecyclerView;
     private SwipeRefreshLayout feedSwipeRefreshLayout;
-    private AppDatabase appDatabase;
     private boolean freshBlogDisplayed = false;
     private String searchQuery;
 
@@ -71,9 +68,6 @@ public class TrainingBlogFragment extends BaseFragment {
 
         setHasOptionsMenu(true);
 
-        appDatabase = AppDatabase.getAppDatabase(getContext());
-        new TrainingBlogFragment.showTrainingBlogFromDB().execute();
-
         updateTrainingFeed();
 
         feedSwipeRefreshLayout = getActivity().findViewById(R.id.training_feed_swipe_refresh_layout);
@@ -86,7 +80,7 @@ public class TrainingBlogFragment extends BaseFragment {
     }
 
     private void updateTrainingFeed() {
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getTrainingBlogFeed("sessionid=" + getArguments().getString(Constants.SESSION_ID), 0, 20, searchQuery).enqueue(new Callback<List<TrainingBlogPost>>() {
             @Override
             public void onResponse(Call<List<TrainingBlogPost>> call, Response<List<TrainingBlogPost>> response) {
@@ -94,8 +88,6 @@ public class TrainingBlogFragment extends BaseFragment {
                     List<TrainingBlogPost> posts = response.body();
                     freshBlogDisplayed = true;
                     displayTrainingFeed(posts);
-
-                    new updateDatabase().execute(posts);
                 }
                 //Server Error
                 feedSwipeRefreshLayout.setRefreshing(false);
@@ -137,7 +129,7 @@ public class TrainingBlogFragment extends BaseFragment {
                                 if (((layoutManager.getChildCount() + layoutManager.findFirstVisibleItemPosition()) > (layoutManager.getItemCount() - 5)) && (!loading)) {
                                     loading = true;
                                     View v = getActivity().findViewById(R.id.training_feed_swipe_refresh_layout);
-                                    RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                                    RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
                                     retrofitInterface.getTrainingBlogFeed("sessionid=" + getArguments().getString(Constants.SESSION_ID), layoutManager.getItemCount(), 10, searchQuery).enqueue(new Callback<List<TrainingBlogPost>>() {
                                         @Override
                                         public void onResponse(Call<List<TrainingBlogPost>> call, Response<List<TrainingBlogPost>> response) {
@@ -212,26 +204,4 @@ public class TrainingBlogFragment extends BaseFragment {
         updateTrainingFeed();
         showLoader = false;
     }
-
-    private class updateDatabase extends AsyncTask<List<TrainingBlogPost>, Void, Integer> {
-        @Override
-        protected Integer doInBackground(List<TrainingBlogPost>... posts) {
-            appDatabase.dbDao().deleteTrainingBlogPosts();
-            appDatabase.dbDao().insertTrainingBlogPosts(posts[0]);
-            return 1;
-        }
-    }
-
-    private class showTrainingBlogFromDB extends AsyncTask<String, Void, List<TrainingBlogPost>> {
-        @Override
-        protected List<TrainingBlogPost> doInBackground(String... posts) {
-            return appDatabase.dbDao().getAllTrainingBlogPosts();
-        }
-
-        protected void onPostExecute(List<TrainingBlogPost> result) {
-            if (!freshBlogDisplayed) {
-                displayTrainingFeed(result);
-            }
-        }
-    }
 }

app/src/main/java/app/insti/fragment/UserFragment.java

@@ -34,6 +34,7 @@ import app.insti.Constants;
 import app.insti.ItemClickListener;
 import app.insti.R;
 import app.insti.ShareURLMaker;
+import app.insti.activity.MainActivity;
 import app.insti.adapter.RoleAdapter;
 import app.insti.adapter.TabAdapter;
 import app.insti.api.RetrofitInterface;
@@ -107,7 +108,7 @@ public class UserFragment extends BackHandledFragment {
         Bundle bundle = getArguments();
         String userID = bundle.getString(Constants.USER_ID);
 
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        RetrofitInterface retrofitInterface = ((MainActivity) getActivity()).getRetrofitInterface();
         retrofitInterface.getUser("sessionid=" + getArguments().getString(Constants.SESSION_ID), userID).enqueue(new Callback<User>() {
             @Override
             public void onResponse(Call<User> call, Response<User> response) {

app/src/main/java/app/insti/notifications/NotificationIntentService.java

@@ -112,7 +112,8 @@ public class NotificationIntentService extends JobIntentService {
                 String eventID = intent.getStringExtra(Constants.EVENT_ID);
                 String sessionID = intent.getStringExtra(Constants.SESSION_ID);
 
-                RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+                ServiceGenerator serviceGenerator = new ServiceGenerator(getApplicationContext());
+                RetrofitInterface retrofitInterface = serviceGenerator.getRetrofitInterface();
                 retrofitInterface.updateUserEventStatus("sessionid=" + sessionID, eventID, Constants.STATUS_NOT_GOING).enqueue(new Callback<Void>() {
                     @Override
                     public void onResponse(Call<Void> call, Response<Void> response) {
@@ -149,7 +150,8 @@ public class NotificationIntentService extends JobIntentService {
         String userID = sessionManager.getUserID();
         final String sessionID = sessionManager.getSessionID();
 
-        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        ServiceGenerator serviceGenerator = new ServiceGenerator(getApplicationContext());
+        RetrofitInterface retrofitInterface = serviceGenerator.getRetrofitInterface();
         retrofitInterface.getUser("sessionid=" + sessionID, userID).enqueue(new Callback<User>() {
             @Override
             public void onResponse(Call<User> call, Response<User> response) {