The content module allows storing rich chat attachments, app content, and settings without having to republish them. Using a web interface you or your clients can control and make instant changes to the apps. Visit Key Concepts page to learn the most important QuickBlox concepts.

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Before you begin

  1. Register a QuickBlox account. This is a matter of a few minutes and you will be able to use this account to build your apps.
  2. Configure QuickBlox SDK for your app. Check out Setup page for more details.
  3. Create a user session to be able to use QuickBlox functionality. See Authentication page to learn how to do it.

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Upload file

Upload a file to the cloud using the following code snippet.
Dart
String url = "content://images/test.jpg";
bool public = false;

try {
  QBFile? file = await QB.content.upload(url, public: public);
} on PlatformException catch (e) {
  // Some error occurred, look at the exception message for more details
}
ArgumentRequiredDescription
urlyesURL of a file.
publicnoBoolean parameter. Specifies file visibility. If the file is public then it’s possible to download it without a session token. Default: false.
The maximum size of the uploaded file depends on the membership plan.
BasicStartupGrowthHIPAAEnterprise
File size limit10 Mb25 Mb50Mb50MbContact our sales team

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Get file info

Get information about a file by ID using the getInfo() method below. This method allows to load the file description model from the server, not the content of the file itself.
Dart
int fileId = 98239423;

try {
  QBFile? file = await QB.content.getInfo(fileId);
  if (file != null) {
    int id = file!.id;
    String uid = file!.uid;
  }
} on PlatformException catch (e) {
  // Some error occurred, look at the exception message for more details
}
ArgumentRequiredDescription
fileIdyesID of the file.

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Get file URL

There are two types of file URLs that can be obtained: private and public.
  • Public URL allows anyone to access the file, no authorization token is needed.
  • Private URL can be accessed only by QuickBlox user with a session token.

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Get public URL

To receive a public URL, use the code snippet below.
Dart
String fileUid = "sdfldsj890dfLKJJerJdkn8";

try {
  String! url = await QB.content.getPublicURL(fileUid);
} on PlatformException catch (e) {
  // Some error occurred, look at the exception message for more details
}
ArgumentRequiredDescription
fileUidyesFile unique identifier. You can get the fileUid from the file recieved as a result of the getInfo() method.

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Get private URL

To get a private URL of the uploaded file, use the following code snippet.
Dart
String fileUid = "sdfldsj890dfLKJJerJdkn8";

try {
  String! url = await QB.content.getPrivateURL(fileUid);
} on PlatformException catch (e) {
  // Some error occurred, look at the exception message for more details
}
ArgumentRequiredDescription
fileUidyesFile unique identifier. You can get the fileUid from the file recieved as a result of the getInfo() method.