Cloud storage: What is it and how to integrate it into the Flutter app

Cloud storage is one of the best features when it comes to the integration of Flutter applications. It’s convenient to use, have a great quality the and most important thing that we – ArrowHiTech would like to mention right here this: Cloud storage providers have reduced operating expenses that can make the technology considerably less expensive to use, yet better for you guys to develop.

Cloud storage tutorial
Cloud storage tutorial

Also, with this kind of eCommerce storage, one can store any kind of data in the cloud through different kinds of apps like mobile apps, web apps, and desktop apps. Moreover, service providers have tried to allay those fears by enhancing their security capabilities and achieve some notable results. So now, we – ArrowHiTech would like to introduce to you guys the definition of cloud storage, and how to integrate it in Flutter apps.

Let’s get into it!

What is cloud storage?

Cloud storage definition
Cloud storage definition

Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, managed, backed up and made available to users over a network (typically the internet). Users generally pay for their cloud data storage on a per-consumption, monthly rate. There are three main cloud-based storage access models: public, private, and hybrid.

Types of cloud storage

Public, private, and hybrid – as mentions earlier – are the best cloud-based storage access models. Here is their definition:

The types of storage
  • Public type provides a multi-tenant storage environment that is most suited for unstructured data on a subscription basis. Data is stored in the service providers’ data centers with storage data spread.
  • Private ones are provided by in-house storage resources deployed as a dedicated environment protected behind an organization’s firewall. They are appropriate for users who need customization and more control over their data
  • Hybrid is the mixture of cloud storage and third-party public cloud storage services with a layer of orchestration management to integrate operationally the two platforms. All in all, private workloads will be deteriorate.

How to integrate it into the Flutter app development?

The process is quite simple for you guys to get started and easily perform for your Flutter app development. To be more specific, here are the steps tailoring for you!

Step 1: Set up all your dependencies

First of all, we will implement the logical functions for performing upload operation in the cloud storage from our application. We will import important libraries and declare our homepage as a StatefulWidget. Then, we will implement the functionality for picking a file from the device. We will define a function _filePicker which will perform this function. We will be using the file_picker package of flutter. The code should go like this:

import 'dart:io';

import 'package:firestorage_demo/imageviewer.dart';
import 'package:flutter/material.dart';
import 'package:path/path.dart' as p;

import 'package:firebase_storage/firebase_storage.dart';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/services.dart';

class HomePage extends StatefulWidget {
  _HomePageState createState() => _HomePageState();
class _HomePageState extends State<HomePage> {

  String fileType = '';
  File file;
  String fileName = '';
  String operationText = '';
  bool isUploaded = true;
  String result = '';

According to that, we are picking the file from the device along with keeping the exception handling in mind. After successfully picking the file from the device we are calling the _uploadFile() function which contains the main logic for uploading the files in Firebase Storage.

Also read: Firebase authentication: Overview and how to use it in Flutter

Step 2: Implement the main function

So now, let’s continue to the implementation i.e. uploading the file to the storage. To do so, we will define a function named _uploadFile() and we will be doing that using the firebase_storage package of flutter. Then, we will design the UI of the application. The UI of any application depends upon the requirement. For example, we’ve built a set of code that should go something like this:

Future<void> _uploadFile(File file, String filename) async {
    StorageReference storageReference;
    if (fileType == 'image') {
      storageReference = 
    if (fileType == 'audio') {
      storageReference = 
    if (fileType == 'video') {
      storageReference = 
    if (fileType == 'pdf') {
      storageReference = 
    if (fileType == 'others') {
      storageReference = 
    final StorageUploadTask uploadTask = storageReference.putFile(file);
    final StorageTaskSnapshot downloadUrl = (await uploadTask.onComplete);
    final String url = (await downloadUrl.ref.getDownloadURL());
    print("URL is $url");

From the above code, it is clear that in the next move, we want to change the value of the fileType variable by using the setState function in order to handle the file types we want to upload. After that, for uploading the images we are first calling the _filePicker() method.

Step 3: Launching the cloud storage demo of the application

After all these steps, it’s time to put this app live. This is an app that can help you put your images on the internet and saving them on the cloud. By putting the codes in the right order, this app will fully functional and make the user easy to use. So now, we would like to show you guys the demo picture of our building sequence. It should go something a little bit like this:

Final words

That should be it! Here are some of the essential information about what cloud storage is and how to integrate it into the Flutter app. All in all, cloud storage is the best place for storing the files of the app. As a result, this will help you – as a developer – build high performance and highly scalable apps for your own business. Your sales and conversions will be boosted also when using this.

We – ArrowHiTech is proud to be one of the most well-established outsourcing companies all around the world. That is to say, with over 12 years of experience, we can provide the best Flutter app development services for your business.

Vietnam Software Outsourcing Company | ArrowHiTech Jsc
ArrowHiTech services