Torch Object Storage
Torch Object Storage
Torch Object Storage
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The header contains a signature
Bucket
Basic Bucket Operations
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Bucket ACL
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Versioning
Static Website
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Custom Domain
Server-side encryption
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video to GIF
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SDK Reference
Java
Pre-signing Mechanism
Bucket Interface
Basic Bucket Interface
Manage Bucket Configuration
Object Interface
Upload Object
Download Object
Upload and Download Speed Limit
Copy Object
List Object
Data Processing
Image Processing
Video Processing
Audio Processing
Log Configuration
Hierarchical Namespace
Bucket base interface
Introduction to Typical Scenes
Python
Data processing
Pre-signature mechanism
Bucket interface
Basic bucket interface
Manage bucket configuration
Object interface
Upload object
Download object
Copy object
List objects
Introduction to typical scenes
C
Object Interface
Upload object
C++
Pre-signature Mechanism
Bucket Interface
Basic Bucket Interface
Manage Bucket Configuration
Object Interface
Upload Object
Download Object
Copy Object
List Objects
Data Processing
Go
Object Interface
Upload Object
Download Object
Copy Object
List Objects
Manage Objects
Bucket Interface
Manage Bucket Configuration
Data Processing
Log Configuration
Introduction to Typical Scenes
Pre-signature Mechanism
Node.js
Pre-signature Mechanism
Bucket Interface
Basic Bucket Interface
Manage Bucket Configuration
Object Interface
Upload object
Download object
Copy object
List objects
Data Processing
Image Processing
Introduction to Typical Scenes
Browser.js
Pre-signature Mechanism
Upload Object
Download Object
Copy Object
List Objects
Manage Objects
Data Processing
.NET
Bucket Interface
Object Interface
Upload Object
Download Object
List Objects
Introduction to Typical Scenes
PHP
Bucket Interface
Object Interface
Download Object
Data Processing
Exception Handling
Android
Bucket Interface
Object Interface
Upload Object
Download Object
Exception Handling
iOS
Bucket Interface
Object Interface
Upload Object
Download Object
Harmony
Pre-signature Mechanism
Bucket Interface
Object Interface
Upload Object
Download Object
List Objects v2
Introduction to Typical Scenarios
Rust
Pre-signing mechanism
Bucket interface
Basic bucket operations
Lifecycle rules
Bucket ACLs
Cross-origin resource sharing
Bucket inventory
Back-to-origin rules
Bucket replication
Static website hosting
Event notification
Custom domain
Server-side encryption
Object interface
Basic operation
Access control
Error Codes
01-SERVICE_ERROR
02-AUTH
03-ACCESS_CONTROL
04-QOS
05-REQUEST
06-BUCKET
07-LIFECYCLE
08-ACL
09-CORS
10-POLICY
11-MIRROR
12-REPLICATION
13-WEBSITE
14-NOTIFICATION
15-ENCRYPT
16-CUSTOMDOMAIN
17-OBJECT
18-TAG
19-MULTIPART
20-STORAGE_CLASS
21-CALLBACK
22-DATA_PROCESS
23-BATCH
24-STORAGE_LENS
25-INVENTORY
26-DIRECTORY_BUCKET
FAQ
Best Practices
AIGC-Doubao LLMs
Accessing TOS with third-party tools
Granting temporary access
Data migration
Data processing
Checking data integrity
Performance optimization
- Documentation
Torch Object StorageBest PracticesAccessing TOS with third-party toolsAccessing TOS with Flutter SDK
Copy page
Download PDFAccessing TOS with third-party tools
Accessing TOS with Flutter SDK
Copy pageDownload PDFAccessing TOS with Flutter SDK
The TOS Flutter SDK is now available on pub.dev. Use it to access TOS and upload or download your data. This topic uses Android Studio as an example to explain how to access TOS with Flutter SDK.
Prerequisites
- You have installed Flutter. For instructions, see Installing Flutter.
- You have installed the Flutter and Dart plugins in Android Studio. For instructions, see Configuring and using Android Studio.
Steps
- Set up long-term access credentials locally.
tip
- macOSLinuxWindowsFollow these steps to configure long-term access credentials on macOS.
- Open Terminal and run this command to open the file.
- nano ~/.bash_profile
- Add your access key ID and secret access key at the end of the file.
- export TOS_ACCESS_KEY=AKTPYmI1Z****export TOS_SECRET_KEY=T1dJM01UU****
- Save the file and exit.
- Run this command to apply the configuration.
- source ~/.bash_profile
- Run this command to verify the configuration.
- echo $TOS_ACCESS_KEYecho $TOS_SECRET_KEY
- The following output confirms a successful configuration.
- AKTPYmI1Z****T1dJM01UU****
Follow these steps to configure long-term access credentials on Linux.- Open Terminal and run this command to open the file.
- sudo vim /etc/profile
- Add your access key ID and secret access key at the end of the file.
- export TOS_ACCESS_KEY=AKTPYmI1Z****export TOS_SECRET_KEY=T1dJM01UU****
- Save the file and exit.
- Run this command to apply the configuration.
- source /etc/profile
- Run this command to verify the configuration.
- echo $TOS_ACCESS_KEYecho $TOS_SECRET_KEY
- The following output confirms a successful configuration.
- AKTPYmI1Z****T1dJM01UU****
Follow these steps to configure long-term access credentials on Windows.- Open the command line interface and run this command to enter your access key ID and secret access key.
- set TOS_ACCESS_KEY=AKTPYmI1Z****set TOS_SECRET_KEY=T1dJM01UU****
- Run this command to apply the configuration.
- setx TOS_ACCESS_KEY "%TOS_ACCESS_KEY%"setx TOS_SECRET_KEY "%TOS_SECRET_KEY%"
- Restart the command line interface and run this command to verify the configuration.
- echo %TOS_ACCESS_KEY%echo %TOS_SECRET_KEY%
- The following output confirms a successful configuration.
- AKTPYmI1Z****T1dJM01UU****
- Run this command to install the TOS Flutter SDK.
tip
- flutter pub add tos
- Access TOS with Flutter SDK.
- Replace region and endpoint with the actual region and endpoint in the code below, and then run it.
tip
When setting the endpoint parameter, add https:// before the domain name. For example: https://tos-cn-beijing.volces.com. For more information on endpoints, see Regions and endpoints.
import 'dart:io' show Platform;
import 'package:tos/enum.dart';
import 'package:tos/exception.dart';
import 'package:tos/tos.dart';
void main() async {
Map<String, String> envVars = Platform.environment;
TosClient client = TosClientBuilder()
.ak(envVars['TOS_ACCESS_KEY'] ?? '')
.sk(envVars['TOS_SECRET_KEY'] ?? '')
.region('cn-beijing')
.endpoint('https://tos-cn-beijing.volces.com')
.build();
var output = await client.listBuckets(ListBucketsInput());
print(output.requestId);
for(var bucket in output.buckets){
print(bucket.name);
}
client.close();
}
A returned bucket name confirms a successful access operation.
Related operations
You can consult the API documentation to write your own code for tasks such as creating buckets and deleting objects. For more API documentation on the TOS Flutter SDK, see tos library.
Last updated: 2026.10.12 14:16:23
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