Generate thumbnails of a file message
When sending image or video files, you can create thumbnails of the multimedia files and render them into your UI. You can specify up to three different sizes for thumbnail images when sending a message both with a single file and with multiple files.
Note: Supported file types are
video/*. The Chat SDK doesn't support creating thumbnails when sending a file message via URL.
sendFileMessage() method requires passing a
FileMessageCreateParams object as an argument to a parameter containing an array of items that each specify the maximum width and height of a thumbnail image. The callback function subsequently returns a list of
Thumbnail items that each contain the URL of the generated thumbnail image file.
A thumbnail image is generated to fit within the bounds of the provided
maxHeight. If the size of the original image is smaller than the specified dimensions, the original image will have the width and height of the specified dimensions. The URL of the thumbnail returns the location of the generated thumbnail file within the Sendbird server.
The same applies to sending a message with multiple files. First, create a
MultipleFilesMessageCreateParams object with an array of
UploadableFileInfo has a property
ThumbnailSizes property. The property can hold up to three
ThumbnailSize objects that specify the maximum values of width and height of each thumbnail image. Then call
sendMultipleFilesMessage() with the params.