Upload image to Firebase from UIImagePicker - swift

Question

I would like to upload a profile picture to Firebase when my UIImage picker has been chosen. But I don't know how to do it and
I can not understand the documentation, because I'm new in coding). Please, help me. I need to upload picture to Firebase. It will be user picture, so reference to picture should save to Database.
extension ProfileViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
let image = info[UIImagePickerController.InfoKey.originalImage] as! UIImage
profileImage.image = image
picker.dismiss(animated: true, completion: nil)
}
I don't how to upload and dowload profile image.

Answer 1

Create a storage reference and add folder name and image names.
Storage.storage().reference().child("id").child("profile.png")
and use putData:metadata:completion: method to upload the image. Once image has been uploaded get the image url and update it in user details.
Upload profile image
import FirebaseStorage
import FirebaseAuth
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
if let image = info[.originalImage] as? UIImage, let imageData = image.pngData() {
profileImage.image = image
let storageRef = Storage.storage().reference().child("id").child("profile.png")
let metaData = StorageMetadata()
metaData.contentType = "image/png"
storageRef.putData(imageData, metadata: metaData) { (metaData, error) in
if error == nil, metaData != nil {
storageRef.downloadURL { url, error in
if let url = url {
print(url)//URL of the profile image
self.saveProfileImageUrlInUserDetails(url: url)
}
}
} else {
print(error?.localizedDescription)//upload failed
}
}
}
picker.dismiss(animated: true, completion: nil)
}
Save uploaded photo reference in user detail Update the user's profile
func saveProfileImageUrlInUserDetails(url: URL) {
let changeRequest = Auth.auth().currentUser?.createProfileChangeRequest()
changeRequest?.photoURL = url
changeRequest?.commitChanges(completion: { error in
if error == nil {
//saved
} else {
print(error?.localizedDescription)//failed to udpate
}
})
}
Download profile image
if let profileImgUrl = Auth.auth().currentUser?.photoURL?.absoluteString {
let ref = Storage.storage().reference(forURL: profileImgUrl)
ref.getData(maxSize: 1 * 1024 * 1024) { data, error in
if let error = error {
print(error.localizedDescription)
} else if let data = data, let image = UIImage(data: data) {
self.profileImage.image = image
}
}
}