Flutter Storage Info

A Flutter plugin to retrieve information about device storage.

This plugin provides methods to get information about both internal and external storage space on an Android device.

Usage

To use this plugin, add flutter_storage_info as a dependency in your pubspec.yaml file.

dependencies:
  flutter_storage_info: ^0.0.6

import 'package:flutter_storage_info/flutter_storage_info.dart';

Example

import 'package:flutter_storage_info/flutter_storage_info.dart';

void main() async {
  // Fetch the storage info
  int totalSpace = await FlutterStorageInfo.storageTotalSpace;
  int freeSpace = await FlutterStorageInfo.storageFreeSpace;
  int usedSpace = await FlutterStorageInfo.storageUsedSpace;

  print('Total Space: $totalSpace bytes');
  print('Free Space: $freeSpace bytes');
  print('Used Space: $usedSpace bytes');
}

Methods

The following methods are provided by the FlutterStorageInfo class:

Internal Storage (Device Storage)

  • storageFreeSpace: Retrieves the amount of free space available on the device's internal storage in bytes.
  • storageTotalSpace: Retrieves the total amount of space available on the device's internal storage in bytes.
  • storageUsedSpace: Retrieves the amount of used space on the device's internal storage in bytes.

External Storage (SD Card)

  • externalStorageFreeSpace: Retrieves the amount of free space available on the device's external storage in bytes.
  • externalStorageTotalSpace: Retrieves the total amount of space available on the device's external storage in bytes.
  • externalStorageUsedSpace: Retrieves the amount of used space on the device's external storage in bytes.

Conversion Methods

  • getStorageSpaceInMB(String method): Retrieves the specified storage space in megabytes (MB).
  • getStorageSpaceInGB(String method): Retrieves the specified storage space in gigabytes (GB).

Directory Size

  • getSizeOfDirectoryInMB(String directory): Retrieves the size of the specified directory in megabytes (MB).

Storage Type Detection

  • getStorageTypeFromPath(String path): Determines whether the specified path corresponds to internal or external storage. Returns a DeviceStorageType enum value (internal or external).

Storage Usage Calculation

  • calculateStorageUsage(double storageUsed, double storageTotal): Calculates the storage usage value as a ratio (storageUsed / storageTotal). Throws an exception if storageTotal is less than or equal to zero.

Low Storage Detection

  • isLowOnStorage(DeviceStorageType storageType, {double threshold = 0.98}): Checks if the storage usage exceeds the specified threshold (default is 98%). Returns true if usage is above the threshold, otherwise false.

Examples

Get the size of a directory in MB

String directoryPath = '/storage/emulated/0/Movies/MyFolder';
double directorySize = await FlutterStorageInfo.getSizeOfDirectoryInMB(directoryPath);
print('Directory Size: $directorySize MB');

Determine the storage type from a path

String path = '/storage/emulated/0/Android';
DeviceStorageType storageType = FlutterStorageInfo.getStorageTypeFromPath(path);
print('Storage Type: $storageType');

Calculate storage usage value

double storageTotal = await FlutterStorageInfo.getStorageSpaceInGB('getStorageTotalSpaceInGB');
double storageUsed = await FlutterStorageInfo.getStorageSpaceInGB('getStorageUsedSpaceInGB');

double usageValue = FlutterStorageInfo.calculateStorageUsage(storageUsed, storageTotal);
print('Storage Usage Value: $usageValue');

Check if storage is low

DeviceStorageType storageType = DeviceStorageType.internal;
double threshold = 0.95;

bool isLow = await FlutterStorageInfo.isLowOnStorage(storageType, threshold: threshold);
print('Is Low on Storage: $isLow');

Screenshot

Screenshot

Permissions

Android

Add the following permissions to your AndroidManifest.xml file:

<manifest xmlns:android="https://schemas.android.com/apk/res/android"
          package="com.example.app">

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

</manifest>

Supported Platforms

  • Android (✅)
  • iOS (🕑)
  • Linux (❌)
  • macOS (❌)
  • Windows (❌)

Issues and Feedback

Please file issues to send feedback or report a bug. Thank you!

Libraries

flutter_storage_info