How can I upload and retrieve images from my iOS application through Firebase?

Question

I want to upload image from one of my view controllers to Firebase and then I want to load the uploaded image to another view controller. Also I want this process to go on for infinite users. I have no idea how to do this.

Answer 1

• You have to upload the image to firebase as given below

  // Data in memory
  let data: NSData = ...
  
  // Create a reference to the file you want to upload
  let riversRef = storageRef.child("images/rivers.jpg")
  
  // Upload the file to the path "images/rivers.jpg"
  let uploadTask = riversRef.putData(data, metadata: nil) { metadata, error in
  if (error != nil) {
  // Uh-oh, an error occurred!
  } else {
  // Metadata contains file metadata such as size, content-type, and download URL.
  let downloadURL = metadata!.downloadURL
  }
  }
  

• After the you can retrieve the image as below

  // Create a reference to the file you want to download
  let islandRef = storageRef.child("images/island.jpg")
  
  // Download in memory with a maximum allowed size of 1MB (1 * 1024 * 1024 bytes)
  islandRef.dataWithMaxSize(1 * 1024 * 1024) { (data, error) -> Void           in
  if (error != nil) {
  // Uh-oh, an error occurred!
  } else {
  // Data for "images/island.jpg" is returned
  // ... let islandImage: UIImage! = UIImage(data: data!)
  }
  }
  

• Also you can find the complete reference in https://firebase.google.com/docs/storage/ios/