Integrate Azure Blob storage in SwiftUI project

Question

Integrate Azure Blob storage in SwiftUI project

Sandhya Raut 10

Does anyone has an example code for integrating Azure blob storage in Swift?

Keshavulu Dasari 4,840 Reputation points Microsoft External Staff Moderator

2025-03-26T16:53:08.1866667+00:00

Hi Sandhya Raut ,

To assist you more effectively, could you please provide additional details about the issue you are facing, or any documentation are your referring on this? This information will help us address the problem and offer the best solution.
Keshavulu Dasari 4,840 Reputation points Microsoft External Staff Moderator

2025-03-27T15:07:25.3733333+00:00

Hi Sandhya Raut ,

Could you please provide additional details about the issue you are facing,

For integrate Azure Blob Storage in a Swift application, Please Refer the below

https://learn.microsoft.com/en-us/answers/questions/118359/does-the-swift-sdk-support-the-blob-storage-api

https://github.com/Azure/azure-sdk-for-ios
Sandhya Raut 10 Reputation points

2025-04-01T12:47:52.3833333+00:00

I am trying to build an SwiftUI app where the user can select images or videos to upload to Azure blob-storage. I tried to install Azure SDK "https://github.com/Azure/azure-sdk-for-ios.git" via SPM but it fails. While adding the package it displays "Package Resolution Failed". There I am trying to use via SAS token and I can't find any examples. Is there any examples or could you provide sample code for using SAS token uploading to the Azure blob storage? Thanks in advance.
Keshavulu Dasari 4,840 Reputation points Microsoft External Staff Moderator

2025-04-02T20:28:17.11+00:00

Hi Sandhya Raut ,

Please let us know if you have any further queries. I’m happy to assist you further.
Sandhya Raut 10 Reputation points

2025-04-03T12:46:00.3833333+00:00

Hi Keshavulu, your sample code is working just some made changes in the code and on the reset values and added a blob type in reset value. Thank you, much appreciated.
Sandhya Raut 10 Reputation points

2025-04-03T12:55:30.51+00:00

Hi,

Is there any way to hide the SAS token as I don't want to hard code it in the app.
Keshavulu Dasari 4,840 Reputation points Microsoft External Staff Moderator

2025-04-03T19:35:26.55+00:00
Hi Sandhya Raut ,

I'm glad to hear that the sample code worked for you after making some adjustments!

Yes, it's a good practice to avoid hardcoding sensitive information like SAS tokens in your app. Here are a few strategies to securely manage and use SAS tokens in your SwiftUI app:Environment Variables and Configuration Files

Store the SAS token in a configuration file or environment variable that is not included in your source code repository. You can use tools like .xcconfig files for this purpose.

Secure Storage Solutions

Use secure storage solutions like Keychain on iOS to store and retrieve the SAS token.

Backend Service

Implement a backend service that generates and provides the SAS token to your app when needed. This way, the token is not stored on the client side at all.

Example: Using a Backend Service

Backend Service: Create a backend service (e.g., using Azure Functions, other backend service) that generates a SAS token and returns it to the client.

SwiftUI App: Fetch the SAS token from the backend service when needed.

Backend Service Example (Azure Function)

Simple example of an Azure Function that generates a SAS token:

import datetime import azure.functions as func from azure.storage.blob import generate_blob_sas, BlobSasPermissions def main(req: func.HttpRequest) -> func.HttpResponse: account_name = "your_account_name" account_key = "your_account_key" container_name = "your_container_name" blob_name = req.params.get('blob_name') sas_token = generate_blob_sas( account_name=account_name, account_key=account_key, container_name=container_name, blob_name=blob_name, permission=BlobSasPermissions(read=True, write=True, create=True), expiry=datetime.datetime.utcnow() + datetime.timedelta(hours=1) ) return func.HttpResponse(sas_token)

some useful documentation that can help you with securely uploading files to Azure Blob Storage using SAS tokens in a SwiftUI project:

https://learn.microsoft.com/en-us/azure/ai-services/document-intelligence/authentication/create-sas-tokens?view=doc-intel-4.0.0&tabs=azure-portal

https://techcommunity.microsoft.com/blog/azurepaasblog/securely-uploading-blob-files-to-azure-storage-from-api-management/4011500

Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

If you have any other questions or are still running into more issues, let me know in the "comments" and I would be happy to help you.

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Your answer

Keshavulu Dasari 4,840 Reputation points Microsoft External Staff Moderator

2025-03-26T16:53:08.1866667+00:00

Hi Sandhya Raut ,

To assist you more effectively, could you please provide additional details about the issue you are facing, or any documentation are your referring on this? This information will help us address the problem and offer the best solution.
Keshavulu Dasari 4,840 Reputation points Microsoft External Staff Moderator

2025-03-27T15:07:25.3733333+00:00

Hi Sandhya Raut ,

Could you please provide additional details about the issue you are facing,

For integrate Azure Blob Storage in a Swift application, Please Refer the below

https://learn.microsoft.com/en-us/answers/questions/118359/does-the-swift-sdk-support-the-blob-storage-api

https://github.com/Azure/azure-sdk-for-ios
Sandhya Raut 10 Reputation points

2025-04-01T12:47:52.3833333+00:00

I am trying to build an SwiftUI app where the user can select images or videos to upload to Azure blob-storage. I tried to install Azure SDK "https://github.com/Azure/azure-sdk-for-ios.git" via SPM but it fails. While adding the package it displays "Package Resolution Failed". There I am trying to use via SAS token and I can't find any examples. Is there any examples or could you provide sample code for using SAS token uploading to the Azure blob storage? Thanks in advance.
Keshavulu Dasari 4,840 Reputation points Microsoft External Staff Moderator

2025-04-02T20:28:17.11+00:00

Hi Sandhya Raut ,

Please let us know if you have any further queries. I’m happy to assist you further.
Sandhya Raut 10 Reputation points

2025-04-03T12:46:00.3833333+00:00

Hi Keshavulu, your sample code is working just some made changes in the code and on the reset values and added a blob type in reset value. Thank you, much appreciated.
Sandhya Raut 10 Reputation points

2025-04-03T12:55:30.51+00:00

Hi,

Is there any way to hide the SAS token as I don't want to hard code it in the app.

Answer 1

Hi Sandhya Raut ,

To integrate Azure Blob Storage in your SwiftUI project using a SAS token, you can follow these steps:

You need to generate a SAS token for your Azure Blob Storage. This token allows you to upload files securely without exposing your storage account keys.

While you mentioned having issues with the Azure SDK for iOS, you can use the @azure/storage-blob package in a JavaScript context to understand how to work with SAS tokens. Unfortunately, there are no direct examples in Swift provided in the context, but the general approach would be similar.

Once you have the SAS token, you can use it to upload files directly to Azure Blob Storage. The typical flow involves:

Selecting a file from the device.
Using the SAS token to construct the upload URL.
Making an HTTP request to upload the file.

Just example of how you might structure your upload function in Swift:


func uploadFileToAzureBlob(fileURL: URL, sasToken: String) {
    let storageAccountName = "YOUR_STORAGE_ACCOUNT_NAME"
    let containerName = "YOUR_CONTAINER_NAME"
    let fileName = fileURL.lastPathComponent
    let uploadURL = "https://\(storageAccountName).blob.core.windows.net/\(containerName)/\(fileName)?\(sasToken)"
    
    var request = URLRequest(url: URL(string: uploadURL)!)
    request.httpMethod = "PUT"
    request.setValue("application/octet-stream", forHTTPHeaderField: "Content-Type")
    
    let fileData = try? Data(contentsOf: fileURL)
    request.httpBody = fileData
    
    let task = URLSession.shared.dataTask(with: request) { data, response, error in
        if let error = error {
            print("Error uploading file: \(error)")
            return
        }
        print("File uploaded successfully!")
    }
    
    task.resume()
}

Make sure to replace YOUR_STORAGE_ACCOUNT_NAME and YOUR_CONTAINER_NAME with your actual Azure Blob Storage account name and container name.

For more detailed guidance, you might want to refer to Azure's documentation on uploading files to Blob Storage using SAS tokens.

https://learn.microsoft.com/en-us/azure/developer/javascript/tutorial/browser-file-upload-azure-storage-blob?tabs=github-codespaces

https://learn.microsoft.com/en-us/azure/developer/javascript/tutorial/browser-file-upload-azure-storage-blob?tabs=github-codespaces#application-architecture

Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.
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Keshavulu Dasari 4,840 Reputation points Microsoft External Staff Moderator

2025-04-04T15:58:24.6566667+00:00

Hi Sandhya Raut ,

Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

If you have any other questions or are still running into more issues, let me know in the "comments" and I would be happy to help you.

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Integrate Azure Blob storage in SwiftUI project

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