Update ProductCategoryLoaderTask.java

app/src/main/java/com/hitesh_sahu/retailapp/domain/api/ProductCategoryLoaderTask.java

@@ -1,11 +1,3 @@
-/*
- * Copyright (c) 2017. http://hiteshsahu.com- All Rights Reserved
- * Unauthorized copying of this file, via any medium is strictly prohibited
- * If you use or distribute this project then you MUST ADD A COPY OF LICENCE
- * along with the project.
- *  Written by Hitesh Sahu <hiteshkrsahu@Gmail.com>, 2017.
- */
-
 package com.hitesh_sahu.retailapp.domain.api;
 
 import android.content.Context;
@@ -44,50 +36,53 @@ protected void onPreExecute() {
 
         super.onPreExecute();
 
-        if (null != ((ECartHomeActivity) context).getProgressBar())
-            ((ECartHomeActivity) context).getProgressBar().setVisibility(
-                    View.VISIBLE);
-
+        if (context instanceof ECartHomeActivity) {
+            ECartHomeActivity activity = (ECartHomeActivity) context;
+            if (activity.getProgressBar() != null) {
+                activity.getProgressBar().setVisibility(View.VISIBLE);
+            }
+        }
     }
 
     @Override
     protected void onPostExecute(Void result) {
         super.onPostExecute(result);
 
-        if (null != ((ECartHomeActivity) context).getProgressBar())
-            ((ECartHomeActivity) context).getProgressBar().setVisibility(
-                    View.GONE);
+        if (context instanceof ECartHomeActivity) {
+            ECartHomeActivity activity = (ECartHomeActivity) context;
+            if (activity.getProgressBar() != null) {
+                activity.getProgressBar().setVisibility(View.GONE);
+            }
+        }
 
         if (recyclerView != null) {
-            CategoryListAdapter simpleRecyclerAdapter = new CategoryListAdapter(
-                    context);
-
+            CategoryListAdapter simpleRecyclerAdapter = new CategoryListAdapter(context);
             recyclerView.setAdapter(simpleRecyclerAdapter);
 
-            simpleRecyclerAdapter
-                    .SetOnItemClickListener(new OnItemClickListener() {
-
-                        @Override
-                        public void onItemClick(View view, int position) {
-
-                            AppConstants.CURRENT_CATEGORY = position;
-
-                            Utils.switchFragmentWithAnimation(
-                                    R.id.frag_container,
-                                    new ProductOverviewFragment(),
-                                    ((ECartHomeActivity) context), null,
-                                    AnimationType.SLIDE_LEFT);
-
-                        }
-                    });
+            simpleRecyclerAdapter.SetOnItemClickListener(new OnItemClickListener() {
+
+                @Override
+                public void onItemClick(View view, int position) {
+                    AppConstants.CURRENT_CATEGORY = position;
+
+                    if (context instanceof ECartHomeActivity) {
+                        Utils.switchFragmentWithAnimation(
+                                R.id.frag_container,
+                                new ProductOverviewFragment(),
+                                (ECartHomeActivity) context,
+                                null,
+                                AnimationType.SLIDE_LEFT);
+                    }
+                }
+            });
         }
-
     }
 
     @Override
     protected Void doInBackground(String... params) {
 
         try {
+            // Simulating network call or heavy operation
             Thread.sleep(3000);
         } catch (InterruptedException e) {
             e.printStackTrace();
@@ -97,5 +92,4 @@ protected Void doInBackground(String... params) {
 
         return null;
     }
-
-}
+}