kings09045 kings09045 - 3 months ago 21
Swift Question

Swift Firebase Storage How to retrieve image with unknow name(NSUUID)

I am making a function to retrieve the url as the user Image. However, my upload image name function created by NSUUID. Therefore, I would not know what is the name of each user profile picture. How could I improve my code to get the user imgae for every user instead of hard coding the img name?

func getUserProfilePic(){
let uid = FIRAuth.auth()?.currentUser?.uid
let profilePath = refStorage.child("\(uid)").child("profilePic/xxxxx.jpg") // xxxxx = NSUUID

profilePath.dataWithMaxSize(1 * 1024 * 1024) { (data, error) -> Void in
if (error != nil) {
print("got no pic")
} else {

let profilePic: UIImage! = UIImage(data: data!)
self.imageV.image = profilePic
print("got pic")
}
}
}


The path is uid/profilePic/--<-file name->--

upload function

func uploadingPhoto(){
let uid = FIRAuth.auth()?.currentUser?.uid
let imgName = NSUUID().UUIDString + ".jpg"
let filePath = refStorage.child("\(uid!)/profilePic/\(imgName)")
var imageData = NSData()
imageData = UIImageJPEGRepresentation(profilePic.image!, 0.8)!

let metaData = FIRStorageMetadata()
metaData.contentType = "image/jpg"

let uploadTask = filePath.putData(imageData, metadata: metaData){(metaData,error) in
if let error = error {
print(error.localizedDescription)
return
}else{
let downloadURL = metaData!.downloadURL()!.absoluteString
let uid = FIRAuth.auth()?.currentUser?.uid
let userRef = self.dataRef.child("user").child(uid!)
userRef.updateChildValues(["photoUrl": downloadURL])
print("alter the new profile pic and upload success")

}

}

Answer

There can be two ways to go about this :-

1.) Store the Firebase Storage path of users profile_picture in your Firebase database and retrieve every time before you start downloading your profile picture.

2.) Store the file path in CoreData every time your user uploads a profile picture and hit that path every time to get file_Path to where you stored that user's profile_pic .

Storing the path :-

func uploadSuccess(metadata : FIRStorageMetadata , storagePath : String)
{   
    print("upload succeded!")
    print(storagePath)

    NSUserDefaults.standardUserDefaults().setObject(storagePath, forKey: "storagePath.\((FIRAuth.auth()?.currentUser?.uid)!)")
    //Setting storagePath : (file path of your profile pic in firebase) to a unique key for every user "storagePath.\((FIRAuth.auth()?.currentUser?.uid)!)"
    NSUserDefaults.standardUserDefaults().synchronize()

 }

Retrieving your path, Every time you start downloading your image :-

let storagePathForProfilePic = NSUserDefaults.standardUserDefaults().objectForKey("storagePath.\((FIRAuth.auth()?.currentUser?.uid)!)") as? String

Note :- i am using currentUser ID, you can use USER SPECIFIC id ,if you want to download multiple users profile pics, all you need to do is put their uid in place.

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