Hello, in this tutorial, I’ll show you how to download files from your Firebase Cloud Storage in Unreal Engine using the Firebase Blueprint Plugin
To begin, make sure you have some files in the Storage.
Setup
Auth - Create Account with Email and Password
Auth - Sign In
Auth - Reset Passwords
Auth - Listening to Sign-In States
Auth - Verifying Users
Auth - Utility Nodes
Firestore - Add Documents
Firestore - Update Document
Firestore - Delete Document
Firestore - Get Document
Firestore - Get Collection
Firestore - Batch Operations
Realtime Database - Add Data
Realtime Database - Update Data
Realtime Database - Delete Data
Realtime Database - Get Data
Cloud Storage - Download File
Cloud Storage - Uploading Files
Cloud Storage - Delete File
Packaging your Project
Cloud Storage - Download File
Hello, in this tutorial, I’ll show you how to download files from your Firebase Cloud Storage in Unreal Engine using the Firebase Blueprint Plugin.
Then in the blueprint, call the Download File node.
Set the path to the file in the Cloud Storage using the Storage path pin.
Click and hold on it. Then drag on an empty spot.
Search for Make Array and select it in the menu.
If we look at the file I want to download, it is located inside the images folder and called image with the type png.
In the array, I’ll insert images for the first element and then add another element for the file name.
The local path pin represents the location of where you want to download the file to.
For Android or iOS, make sure that the directory is writable, or you’ll not be able to download the file.
I’ll use the Project Persistent Download directory since it’ll work for Android and iOS. Then I’ll append it to give the downloaded file a name.
The next thing you’ll need to do is to put the maximum byte size for the download. It does not need to be the exact amount but it should not be a lot larger than what you need.
Let’s say I’ll be downloading images that are between 5-10 megabytes - then I should put the max size to 10 megabytes.
To get the amount of bytes in 10 megabytes, I’ll do 1024 * 1024 * 10. Because 1024 bytes is 1 kilobytes and there are 1024 kilobytes in 1 megabytes.
Adding the Callbacks
Lastly, add the callbacks. Click and hold on them and drag on an empty spot.
Select Add Event, then Add Custom Event.
For demo purposes, I'll add print nodes to the callbacks.
Now when I run the app and click on the download button, I should see a message on the screen telling me that the file is downloaded.
If I go to the Saved folder of the project, there should be a folder call PersistentDownloadDir. If I go into it, we should see the file.
