Upload image to Firebase Storage and show as Profile Image - swift

Question

I need help with uploading image to Firebase Storage. I have a profile menu in my app. When user tap on this menu he/she can see profile with their info and Profile Image. So I made it so you can select a photo from the gallery. But I need to save photo to Firebase Storage and add ref to Firebase Database by uid.
In addition, the user may not have a photo, so it will be nill because nothing in Database. Look at photo and you will understand everything
extension ProfileViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
var selectedImage: UIImage?
if let editedImage = info[.editedImage] as? UIImage {
selectedImage = editedImage
self.profileImage.image = selectedImage!
self.savedImage = selectedImage
picker.dismiss(animated: true, completion: nil)
} else if let originalImage = info[.originalImage] as? UIImage {
selectedImage = originalImage
self.profileImage.image = selectedImage!
self.savedImage = selectedImage
picker.dismiss(animated: true, completion: nil)
}
}
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleSelectProfileImageView) )
profileImage.addGestureRecognizer(tapGesture)
profileImage.isUserInteractionEnabled = true
#objc func handleSelectProfileImageView () {
print("Tapped")
let pickerController = UIImagePickerController()
pickerController.delegate = self
present(pickerController, animated: true, completion: nil)
}
So, how to upload and dowload image.
If the user does not have a photo (ref in Database). He will see image from assets.
If the user have photo he will see image from FB.
image

Answer 1

For Uploading to Firebase storage
let imgData: NSData = NSData(data: UIImageJPEGRepresentation((self.img_Photo?.image)!, 0.5)!)
let _:NSData = NSData(data:UIImagePNGRepresentation(((self.img_Photo?.image)!))!)
self.uploadProfileImageToFirebase(data: imgData)
Function for uploading
func uploadProfileImageToFirebase(data:NSData){
let randomPic = randomString(length: 10)
let storageRef = Storage.storage().reference().child("Pictures").child("\(value(forKey: "UserUID") ?? randomPic).jpg")
if data != nil {
storageRef.putData(data as Data, metadata: nil, completion: { (metadata, error) in
if(error != nil){
print(error)
return
}
guard let userID = Auth.auth().currentUser?.uid else {
return
}
// Fetch the download URL
storageRef.downloadURL { url, error in
if let error = error {
// Handle any errors
if(error != nil){
print(error)
return
}
} else {
// Get the download URL for 'images/stars.jpg'
let urlStr:String = (url?.absoluteString) ?? ""
let values = ["photo_url": urlStr]
self.registerUserIntoDatabaseWithUID(uid: userID, values: values as [String : AnyObject])
}
}
})
}
}
func registerUserIntoDatabaseWithUID(uid:String, values:[String:AnyObject]){
let ref = Database.database().reference(fromURL: "https://domain.firebaseio.com/")
let usersReference = ref.child("users").child((Auth.auth().currentUser?.uid)!)
usersReference.updateChildValues(values) { (error, ref) in
if(error != nil){
print(error)
return
}
self.parentVC?.dismiss(animated: true, completion: nil)
}
}