Uploading Images from UIImage Picker onto new Firebase (Swift)

Question

I have a UIImagePicker set up within my app that works fine. I would like to upload a profile picture to Firebase when my UIImage picker has been chosen. Here is my function

Answer 1

Simple 2020 example

1. Don't forget to add pod 'Firebase/Storage' to your podfile, and pod install

2. Add two delegates to your class

   class YourScreen: UIViewController, 
     UIImagePickerControllerDelegate, UINavigationControllerDelegate {
   

3. Storyboard, button, link to ...

   @IBAction func tapCameraButton() {
   let picker = UIImagePickerController()
   picker.allowsEditing = true
   picker.delegate = self
   present(picker, animated: true)
   }
   

   and then

   func imagePickerController(_ picker: UIImagePickerController,
   didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
   
    guard let im: UIImage = info[.editedImage] as? UIImage else { return }
    guard let d: Data = im.jpegData(compressionQuality: 0.5) else { return }
   
    let md = StorageMetadata()
    md.contentType = "image/png"
   
    let ref = Storage.storage().reference().child("someFolder/12345678.jpg")
   
    ref.putData(d, metadata: md) { (metadata, error) in
        if error == nil {
            ref.downloadURL(completion: { (url, error) in
                print("Done, url is \(String(describing: url))")
            })
        }else{
            print("error \(String(describing: error))")
        }
    }
   
    dismiss(animated: true)
   }
   

But where do you put the image?

At the code,

... .child("someFolder/12345678.jpg")

Almost inevitably,

• as the folder name use the user's id, the chat id, the feed id or a similar concept

• for the name, the only possibility is a uuid

Hence almost always

let f = chatId + "/" + UUID().uuidString + ".jpg"
let ref = Storage.storage().reference().child(f)