This is how I checked for the "OK" http response status code guard let httpResponse = response as? HTTPURLResponse, httpResponse.statusCode == 200 else { print(response.debugDescription); return } //perhaps check for response status of 200 (HTTP OK)

aghh I am stuck... I did everything until minute 4:30 but unlike you, my collectionViewController is not even trying to render header. No error, nothing. What could I be missing, I can not tell ?

Hello Brian, going back to the mainThread and setting the userprofileImage takes over 15 seconds :O . I tried it over 20 times it always took so much time. DispatchQueue.main.async { self.profileImageView.image = image } }.resume() My image just has 6.3 kb. My code has no bugs. I checked my code with breakpoints and the resume call takes a long time. Why is it like that and what can I do instead ? Thanks

Hello Brian, you created a top and a bottomDividerView and anchor it at the top and at the bottom of the stack view. Is it also possible to create vertical lines between the labels inside the stack view ? I tried it but could not create them.

Hey Brian... So when you do a URLSession you are automatically going into a background thread correct? And to modify the UI you need to get back on the main thread... Anytime you access the Firebase database to grab a user like we did with the username in the nav controller title... why isn't that done in the background thread?

Brian I really like the way you structure your projects, fetching data into classes/structs and the MVC pattern. This could be emphasised even more (and earlier) imo. I did your twitter series which I thought was excellent in that regard and Im sure that this will pan out in a similar fashion. Have a good break

Brian As a total ios noob I appreciate you covering URLSession here, but Im left wondering you didnt use the firebase methods like: // from Firebase docs https://firebase.google.com/docs/storage/ios/download-files let islandRef = storageRef.child("images/island.jpg") // Download in memory with a maximum allowed size of 1MB (1 * 1024 * 1024 bytes) islandRef.data(withMaxSize: 1 * 1024 * 1024) { data, error in if let error = error { // Uh-oh, an error occurred! } else { // Data for "images/island.jpg" is returned let image = UIImage(data: data!) } } Is it for the reason of teaching URLSession and another way to fetch an image or do you believe performance or simplicity via URLSession is more beneficial?

If anybody experienced the same situation, please shine a light. Simply set “header.user = user” in the “dequeueReusableSupplementaryView” method does not work for me. “user” in the “UserProfileHeader” file is still nil. What I had to do is define var user: User? var header: UserProfileHeader? in the global scope and then do this self.user = User(dictionary: dictionary) self.header.user = self.user in the “fetchUser” method for it to work.

For some reason, I still have a red circle. This piece of code below doesn't even fire in URLSession. Not sure what I missed. I double checked your code Brian with mine and I'm still stumped. DispatchQueue.main.async { self.profileImageView.image = image }

Brian, Great course, your video lessons have been great to use. Quickly, I am currently encountering an error after implementing the struct User object. My view controller is returning an error which reads "Cannot convert value type of "(User?, Error?) -> ()" to expected argument. Have you encountered this? If so, do you have a fix? Thanks!

Great lesson!

good stuff!

Brain, The green header is not appeared on in UICollectionView, and this my code: import UIKit import Firebase class UserProfileViewController: UICollectionViewController, UICollectionViewDelegateFlowLayout { override func viewDidLoad() { super.viewDidLoad() collectionView?.backgroundColor = .white self.collectionView?.register(UICollectionViewCell.self, forSupplementaryViewOfKind: UICollectionElementKindSectionHeader, withReuseIdentifier: "headerId") fetchUser() } override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView { let header = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "headerId", for: indexPath) header.backgroundColor = .green return header } func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize { return CGSize(width: view.frame.width, height: 200) } func fetchUser() { guard let uid = FIRAuth.auth()?.currentUser?.uid else {return} FIRDatabase.database().reference().child("users").child(uid).observeSingleEvent(of: .value, with: {(snapshot) in print(snapshot.value ?? "") guard let dictenary = snapshot.value as? [String: Any] else {return} guard let username = dictenary["username"] as? String else {return} self.navigationItem.title = username }){(error) in print(error) } } } please can help

I am getting an error saying that I cannot convert value of type '(User?, Error?) -> () to expected argument in my view controller file. This happened after I completed the code in this section of the tutorial. Any advice please?

Is anyone having an issue with the input accessory view getting stuck at the bottom? When exiting comment screen

could you tell me how to implement a tableview header in code? it is similar to this or if not, is there any article about it? thanks

I get this err can any one help me please " libc++abi.dylib: terminating with uncaught exception of type NSException (lldb) "

since I download the new Xcode 9 I automatically run to a lot of problems​.

Hey Brian can I please send you my file, can you please look at it and tell me what could have possibly been wrong.

Even your project file doesn't run it

Nvm Brian, I got it turns out the problem was that my user didn't have a user picture :P Thanks anyway

Hi Brian, The simulator is just black. Even when I download your project files, import firebase, it still does not run any of the code of the last few lessons. Don't know what to do. Thanks - Matt

The name of the struct "User" is the same as the firebase User class, which causes the problem in "handleSignUp"

Hi Brian, I'm just 1/3 in this video... I can't seem to display the profileImageView. I did exactly in your vid and the blue header is displaying but the profileImageView doesn't display and I am at a loss. I did it a couple of times already, restarted the simulator and the project but its not displaying... and idea?

Hey I wanted to set the cornerRadius like = profileImageView.frame.Width/2 instead of 80/2, why doesn't that work as well? When you set it like that, it doesn't get round.

what .resumeI() do and why we call it ?

Hey Brian , What does .resume() function does ?

Hey Brian, You have used struct for the User. My question is what if we used Class instead of structures. I know that Class is reference type and struct is a value type. But whats the main reason behind the use of struct here. Is that struct don't create unnecessary references and safe to reside its copy in memory? Thanks in advance

Hi Brian, Hope you're well and your courses are honestly one of the best around (a lot better than udemy). I have an annoying question though: I'm trying to implement the ability for user to change his profile picture by replacing the UIImageView with a UIButton and using the same imagePicker functionality you did for the login page. However since I'm trying to achieve this within the userHeader class and not a UIViewController class, I cannot get the imagePickerController to appear using "present". Is there a way to achieve this in a class that's not a ViewController class? I hope it made sense and maybe you can shine some light upon it if it's not too much trouble. Thanks once again.

Hey Brian, When trying to get the image to show up in the profileImageView nothing shows up both ways. I also tried to print the data but it showed nothing in my console.

At 9:40 my profileImageView is not showing up at all. Everything has been working fine up to this point. Now I'm just trying to tackle this problem. I'll do some more troubleshooting on my own but in the meantime, any suggestions would be much appreciated.

hey brian profile pitur not show in profile header ? so please help me

hey Brian how to set center in profileimageview? profileImageView.anchor(top: topAnchor, left: leftAnchor, bottom: nil, right: nil, paddingTop: 12, paddingLeft:100 , paddingBottom: 150, paddingRight: 100, width: 80, height: 80) check the constraints please fast reply..

hey brian i cant show image in profile image view how to solved this please fix it fileprivate func setupProfileImage() { guard let profileImageUrl = user?.profileImageUrl else { return } guard let url = URL(string: profileImageUrl) else { return } URLSession.shared.dataTask(with: url) { (data, response, err) in //check for the error, then construct the image using data if let err = err { print("Failed to fetch profile image:", err) return } //perhaps check for response status of 200 (HTTP OK) guard let data = data else { return } let image = UIImage(data: data) //need to get back onto the main UI thread DispatchQueue.main.async { self.profileImageView.image = image } }.resume() }

Hello everyone I erased from firebase database the last test profile I made. Is there any way to create a new one at this stage or to set the program to not look for test3 and instead look for test2.. I am getting some errors and I am not sure if it is from my deleting the test3 profile using the X in the firebase program. thx

Hi,Brian你好 求助！！！不确定是不是因为版本不同的原因，代码出现错误，我把user和User改成了users和Users。但是后面还是出现了两处错误无法执行： var users: Users? { didSet { setupProfileImage(). //错误1：Use of unresolved identifier 'setupProfileImage' } fileprivate func setupProfileImage() { //错误2：Expected 'get', 'set', 'willSet', or 'didSet' keyword to start an accessor definition print("Did set \(users?.username)") guard let profileImageUrl = users?.profileImageUrl else { return } guard let url = URL(string: profileImageUrl) else { return } URLSession.shared.dataTask(with: url) { (data, response, err) in //check for the error,then construct the image using data if let err = err { print("Failed to fetch profile image:", err) return }。。。

Hi there Guys, I'm noticing a small bug in my application at this point. Everytime I open up the app it first shows the UID for a second or so, before switching to the username that I want to be displayed. Is there a way to make the app 'forget' we asked for the UID to be displayed there in the first place, and just immidiately always show the username? Regards, Chris

My header for some reason isn't showing, can someone tell me if theres anything wrong in my code? override func viewDidLoad() { super.viewDidLoad() navigationItem.leftBarButtonItem = UIBarButtonItem(title: "Logout", style: .plain, target: self, action: #selector(handleLogout)) collectionView?.backgroundColor = .blue fetchUsers() collectionView?.register(UserProfileHeader.self, forSupplementaryViewOfKind: UICollectionElementKindSectionHeader, withReuseIdentifier: "headerID") } override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView { let header = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "headerID", for: indexPath) return header } func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize { return CGSize(width: view.frame.width, height: 200) }

Hey Brian, I could not fetch username, users profile for some reason, I follow along with all the steps. Please help me check if I miss something. Thank you /Users/thaodoan/Desktop/Screen Shot 2018-06-27 at 1.07.28 PM.png/Users/thaodoan/Desktop/Screen Shot 2018-06-27 at 1.06.56 PM.png/Users/thaodoan/Desktop/Screen Shot 2018-06-27 at 1.00.27 PM.png

copied and pasted the code from swift 4.1 into my profile and cant even get the red circle Brian, nothing showing at all just the blue header... code is identical to the sample project, any ideas Please? thanks

not profile image appears for swift version 4.2, just a blue background, ive copied every file into mine any ideas? just get a header....no image

Hey Brian. My profile image stays empty - printing the username/image from the UserProfileHeader file I only get nil as results. I am assuming that as I am passing the user from the UserProfileController to the UserProfileHeader, the user hasn't been loaded yet. That is visible as well from the fact that the username in the navigation title only appears after a second or so (10 Mbit Internet connection here). What's a good way to pass it on completion again?

Hi Brian, Why does the 'didSet' code of the 'UserProfileHeader' is executed only once and when the user variable is still 'nil', when I don't force the reload of data with the self.collectionView.reloadData() call in the fetch user function although the fetchUser() is called in the viewDidLoad before registering the profile header?

@17.35, my url session print(data) prints Task finished with errorcode -1002, nil. anyway how to fix?

Can you explain or point to somewhere that can what calling UICollectionViewCell.self (or any iteration of Class.self) does?

Hey Brian, I did not understand this block of code: override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView { let header = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "headerID", for: indexPath) as! UserProfileHeader header.user = self.user return header } why did you do header.user = self.user and also how did the setupProfileImage() function run when you never called it did it run because you did this var user: User? { didSet { setupProfileImage() } } thanks

Hello, Brian! I am sorry for bothering you, but I just wonder what these errors mean? Should I pay attention to them? Or just leave them alone? (App does not crash) 2019-04-04 22:37:17.116555-0700 InstagramFake[9806:1099219] - <AppMeasurement>[I-ACS036002] Analytics screen reporting is enabled. Call +[FIRAnalytics setScreenName:setScreenClass:] to set the screen name or override the default screen class name. To disable screen reporting, set the flag FirebaseScreenReportingEnabled to NO (boolean) in the Info.plist 2019-04-04 22:37:17.312166-0700 InstagramFake[9806:1099226] 5.16.0 - [Firebase/Analytics][I-ACS023007] Analytics v.50500000 started 2019-04-04 22:37:17.313010-0700 InstagramFake[9806:1099226] 5.16.0 - [Firebase/Analytics][I-ACS023008] To enable debug logging set the following application argument: -FIRAnalyticsDebugEnabled (see http://goo.gl/RfcP7r) 2019-04-04 22:37:17.639495-0700 InstagramFake[9806:1099219] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C1.1:2][0x7fd261714930] get output frames failed, state 8196 2019-04-04 22:37:17.639632-0700 InstagramFake[9806:1099219] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C1.1:2][0x7fd261714930] get output frames failed, state 8196 2019-04-04 22:37:17.640364-0700 InstagramFake[9806:1099219] TIC Read Status [1:0x0]: 1:57 2019-04-04 22:37:17.640522-0700 InstagramFake[9806:1099219] TIC Read Status [1:0x0]: 1:57 2019-04-04 22:37:17.755436-0700 InstagramFake[9806:1099219] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C2.1:2][0x7fd26170a000] get output frames failed, state 8196 2019-04-04 22:37:17.755538-0700 InstagramFake[9806:1099219] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C2.1:2][0x7fd26170a000] get output frames failed, state 8196 2019-04-04 22:37:17.759107-0700 InstagramFake[9806:1099219] TIC Read Status [2:0x0]: 1:57 2019-04-04 22:37:17.759380-0700 InstagramFake[9806:1099219] TIC Read Status [2:0x0]: 1:57 2019-04-04 22:37:18.294474-0700 InstagramFake[9806:1099246] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C4.1:2][0x7fd261714930] get output frames failed, state 8196 2019-04-04 22:37:18.294598-0700 InstagramFake[9806:1099246] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C4.1:2][0x7fd261714930] get output frames failed, state 8196 2019-04-04 22:37:18.294909-0700 InstagramFake[9806:1099246] TIC Read Status [4:0x0]: 1:57 2019-04-04 22:37:18.294995-0700 InstagramFake[9806:1099246] TIC Read Status [4:0x0]: 1:57 2019-04-04 22:37:18.402058-0700 InstagramFake[9806:1099228] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C6.1:2][0x7fd261624ca0] get output frames failed, state 8196 2019-04-04 22:37:18.402389-0700 InstagramFake[9806:1099228] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C6.1:2][0x7fd261624ca0] get output frames failed, state 8196 2019-04-04 22:37:18.402896-0700 InstagramFake[9806:1099228] TIC Read Status [6:0x0]: 1:57 2019-04-04 22:37:18.403029-0700 InstagramFake[9806:1099228] TIC Read Status [6:0x0]: 1:57 2019-04-04 22:37:18.601013-0700 InstagramFake[9806:1099219] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C8.1:2][0x7fd261423b50] get output frames failed, state 8196 2019-04-04 22:37:18.601218-0700 InstagramFake[9806:1099219] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C8.1:2][0x7fd261423b50] get output frames failed, state 8196 2019-04-04 22:37:18.601564-0700 InstagramFake[9806:1099219] TIC Read Status [8:0x0]: 1:57 2019-04-04 22:37:18.601776-0700 InstagramFake[9806:1099219] TIC Read Status [8:0x0]: 1:57 2019-04-04 22:37:18.855274-0700 InstagramFake[9806:1099228] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C7.1:2][0x7fd261519870] get output frames failed, state 8196 2019-04-04 22:37:18.855455-0700 InstagramFake[9806:1099228] [BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C7.1:2][0x7fd261519870] get output frames failed, state 8196 2019-04-04 22:37:18.855966-0700 InstagramFake[9806:1099228] TIC Read Status [7:0x0]: 1:57 2019-04-04 22:37:18.856120-0700 InstagramFake[9806:1099228] TIC Read Status [7:0x0]: 1:57

Hello again! For some reasons, I cannot see a profile image, there is only a red circle. Even though if I copied everything from your code, it still does not work, and I could not run your project, it pops up a lot of errors.

You have made this so simple. Thanks for sharing your knowledge Brian!

Hello Brian, I have two errors. One is that NavigationBar does not display the user name. One does not display the user image. I have downloaded your code and run it. But the screen does not display the user name and user image.

How did I just post a question? The comment shows that the time was four months ago ==?

If you get stuck with UICollectionElementKindSectionHeader syntax error, it's now UICollectionView.elementKindSectionHeader in Swift 4.1+. New syntax to register header: collectionView.register(UICollectionViewCell.sef, forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "headerId")

Hi Brian, I'm getting this error: "Value of type 'User' has no member 'profileImageUrl' " All code is identical. Any thoughts? I'm now in Xcode 11 Kind regards, Champe

I had a job offer from a company to do React / Node.js. they cancelled that position shortly after. Now they want to see if I'd like to join the iOS team instead and see if I can get up to speed in 3-6 months...anyone think I can do it? I have an interview with the software lead in about 9 hours lol.

Hey Brian, Ive followed everything step by step and checked the sample code too, but my profile image isn't uploading onto the profile pictures circle. Even when I did lecture 5 and seen my imageURL pop up inside the console debug area and then copied and downloaded that onto safari, it didn't let me open the image up with preview unless I changed the pictures extension to .jpg Thanks

The user image doesn’t show using this code are there any solutions for this func setupProfileImage() { guard let uid = Auth.auth().currentUser?.uid else { return } Database.database().reference().child("users").child(uid).observeSingleEvent(of: .value, with: { (snapshot) in print(snapshot.value ?? "") guard let dictionary = snapshot.value as? [String: Any] else { return } guard let profileImgeURL = dictionary["ProfileImageUrl"] as? String else{ return} guard let url = URL(string: profileImgeURL) else {return} URLSession.shared.dataTask(with: url) { (data, response, error) in if let err = error { print("failed to show", err) return } guard let data = data else {return } let image = UIImage(data: data) DispatchQueue.main.async { self.ProfileImage.image = image } }.resume() } )}

Brian, I want to remove the posts/follower/following text and the Edit Profile button and center the Profile pic and user name. I commented out the elements for now. What's the easiest way to center the profile pic and username? Do I need to delete all the code for the text and button or can I leave it commented out and reposition the two elements I want?