fetch data from Firebase using autoID - Xcode - swift

Question

On the top level of my app I have a tableViewController where you can create new jobs that are saved to my firebase database using an autoID.
Here is the JSON
{
"jobInfo" : {
"-L59sEGslWF7HFza26ay" : {
"FPS" : "25",
"director" : "Mike & Jim",
"jobBrand" : "Honda",
"jobName" : "Dreammakers"
},
"-L59sWGEccWMFEeFWyNU" : {
"FPS" : "25",
"director" : "Anthony Test",
"jobBrand" : "WWF",
"jobName" : "Eye"
}
}
}
This is the code that links you to the UITabBarController:
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let jobInfo = page_jobTabController()
show(jobInfo, sender: self)
}
You can then click on one of the cells which takes you to a UItabBarViewController that has 4 tabs. In the first tab I have several textFields that lists information about the job.
I am struggling to work out how to send the autoID from the UITableViewController through the UITabBarController to the UIViewController so the textFields can be filled in with the correct information.
Here is a screenshot of the two pages to get an idea of what I want to do.
Sorry to dump all this code below - I am not trying to spam.
This is my dictionary:
class Job: NSObject {
var id: String?
var jobBrand: String?
var jobName : String?
var directorName : String?
var FPSvalue : String?
init(dictionary: [String: AnyObject]) {
self.id = dictionary["id"] as? String
self.jobBrand = dictionary["jobBrand"] as? String
self.jobName = dictionary["jobName"] as? String
self.directorName = dictionary["directorName"] as? String
self.FPSvalue = dictionary["FPSvalue"] as? String
}
}
This is my jobList page (top level)
class page_jobList: UITableViewController {
let cellId = "cellId"
var jobs = [Job]()
override func viewDidLoad() {
super.viewDidLoad()
// NAVIGATION ITEM
navigationItem.title = "Jobs"
navigationController?.navigationBar.prefersLargeTitles = true
tableView.register(JobCell.self, forCellReuseIdentifier: cellId)
// FIREBASE FETCH JOBS
fetchJobs()
}
// FETCH JOBS
func fetchJobs() {
Database.database().reference().child("jobInfo").observe(.childAdded) { (snapshot) in
if let dictionary = snapshot.value as? [String: AnyObject] {
print (snapshot)
// PROCESSES VALUES RECEIVED FROM SERVER
if ( snapshot.value is NSNull ) {
// DATA WAS NOT FOUND
print("– – – Data was not found – – –")
} else {
let job = Job(dictionary: dictionary)
job.id = snapshot.key
self.jobs.append(job)
//this will crash because of background thread, use dispatch_async to fix
DispatchQueue.main.async(execute: {
self.tableView.reloadData()
})
}
}
}
}
// AFTER DATA IS FETCHED AND ADD IT TO TABLE VIEW
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return jobs.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath)
let job = jobs[indexPath.row]
cell.accessoryType = UITableViewCellAccessoryType.disclosureIndicator
cell.textLabel?.text = job.jobBrand
cell.detailTextLabel?.text = job.jobName
return cell
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 72
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let jobInfo = page_jobTabController()
jobInfo.job? = jobs[indexPath.row]
show(jobInfo, sender: self)
}
}
class JobCell: UITableViewCell {
override init(style: UITableViewCellStyle, reuseIdentifier: String?){
super .init(style: .subtitle, reuseIdentifier: reuseIdentifier)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implented")
}
}
This is my tabBarController:
class page_jobTabController: UITabBarController {
override func viewDidLoad() {
super.viewDidLoad()
// NAVIGATION ITEM
let jobInfo = page_jobInformation()
jobInfo.job? = job!
let shots = page_shotList()
let attachments = page_attachments()
let notes = page_notesList()
jobInfo.tabBarItem.title = "Information"
jobInfo.tabBarItem.image = UIImage(named: "jobInfo")
shots.tabBarItem.title = "Shots"
shots.tabBarItem.image = UIImage(named: "shots")
attachments.tabBarItem.title = "Attachments"
attachments.tabBarItem.image = UIImage(named: "attachments")
notes.tabBarItem.title = "Notes"
notes.tabBarItem.image = UIImage(named: "notes")
viewControllers = [jobInfo, shots, attachments, notes]
}
#IBAction func HandleEdit(sender : UIButton) {
let transition = CATransition()
transition.duration = 0.5
transition.type = kCATransitionPush
transition.subtype = kCATransitionFromRight
transition.timingFunction = CAMediaTimingFunction(name:kCAMediaTimingFunctionEaseInEaseOut)
view.window!.layer.add(transition, forKey: kCATransition)
}
}
This is my jobInfo tab ViewController
class page_jobInformation: UIViewController{
// CONTENT CREATION
// GENERAL
let generalTitle: UILabel = {
let generalTitle = UILabel()
generalTitle.font = UIFont(name: "HelveticaNeue", size: 12.0)
generalTitle.text = "GENERAL"
generalTitle.translatesAutoresizingMaskIntoConstraints = false
return generalTitle
}()
let jobBrand: UITextField = {
let jobBrand = UITextField()
//jobBrand.text = "jobBrand"
jobBrand.isUserInteractionEnabled = false
jobBrand.keyboardType = UIKeyboardType.default
jobBrand.translatesAutoresizingMaskIntoConstraints = false
return jobBrand
}()
let jobName: UITextField = {
let jobName = UITextField()
jobName.keyboardType = UIKeyboardType.default
jobName.text = "jobName"
jobName.isUserInteractionEnabled = false
jobName.translatesAutoresizingMaskIntoConstraints = false
return jobName
}()
let directorName: UITextField = {
let directorName = UITextField()
directorName.text = "directorName"
directorName.keyboardType = UIKeyboardType.default
directorName.isUserInteractionEnabled = false
directorName.translatesAutoresizingMaskIntoConstraints = false
return directorName
}()
let AgencyName: UITextField = {
let AgencyName = UITextField()
AgencyName.text = "Agency"
AgencyName.keyboardType = UIKeyboardType.default
AgencyName.isUserInteractionEnabled = false
AgencyName.translatesAutoresizingMaskIntoConstraints = false
return AgencyName
}()
let prodCoName: UITextField = {
let prodCoName = UITextField()
prodCoName.text = "Production Company"
prodCoName.keyboardType = UIKeyboardType.default
prodCoName.isUserInteractionEnabled = false
prodCoName.translatesAutoresizingMaskIntoConstraints = false
return prodCoName
}()
// TECHNICAL
let technicalTitle: UILabel = {
let technicalTitle = UILabel()
technicalTitle.font = UIFont(name: "HelveticaNeue", size: 12.0)
technicalTitle.text = "TECHNICAL"
technicalTitle.translatesAutoresizingMaskIntoConstraints = false
return technicalTitle
}()
lazy var jobSpecsButton: UIButton = {
let jobSpecsButton = UIButton(type: .system)
jobSpecsButton.setTitle("Job Specifications", for: .normal)
jobSpecsButton.titleLabel?.font = UIFont(name: "HelveticaNeue", size: 14.0)
jobSpecsButton.layer.masksToBounds = true
jobSpecsButton.contentHorizontalAlignment = .left
jobSpecsButton.setTitleColor(UIColor.gray, for: UIControlState.normal)
jobSpecsButton.backgroundColor = UIColor(red:1.00, green:1.00, blue:1.00, alpha:1.0)
jobSpecsButton.setTitleColor(.black, for: .normal)
jobSpecsButton.translatesAutoresizingMaskIntoConstraints = false
jobSpecsButton.addTarget(self, action: #selector(HandleJobSpecs), for: .touchUpInside)
return jobSpecsButton
}()
lazy var cameraButton: UIButton = {
let cameraButton = UIButton(type: .system)
cameraButton.setTitle("Camera & Lenses", for: .normal)
cameraButton.titleLabel?.font = UIFont(name: "HelveticaNeue", size: 14.0)
cameraButton.layer.masksToBounds = true
cameraButton.contentHorizontalAlignment = .left
cameraButton.setTitleColor(UIColor.gray, for: UIControlState.normal)
cameraButton.backgroundColor = UIColor(red:1.00, green:1.00, blue:1.00, alpha:1.0)
cameraButton.setTitleColor(.black, for: .normal)
cameraButton.translatesAutoresizingMaskIntoConstraints = false
cameraButton.addTarget(self, action: #selector(HandleCameraLenses), for: .touchUpInside)
return cameraButton
}()
lazy var SKCButton: UIButton = {
let SKCButton = UIButton(type: .system)
SKCButton.setTitle("Shoot Kit Checklist", for: .normal)
SKCButton.titleLabel?.font = UIFont(name: "HelveticaNeue", size: 14.0)
SKCButton.layer.masksToBounds = true
SKCButton.contentHorizontalAlignment = .left
SKCButton.setTitleColor(UIColor.gray, for: UIControlState.normal)
SKCButton.backgroundColor = UIColor(red:1.00, green:1.00, blue:1.00, alpha:1.0)
SKCButton.setTitleColor(.black, for: .normal)
SKCButton.translatesAutoresizingMaskIntoConstraints = false
SKCButton.addTarget(self, action: #selector(HandleSKC), for: .touchUpInside)
return SKCButton
}()
// STACKED VIEWS
lazy var stack:UIStackView = {
let s = UIStackView(frame: self.view.bounds)
s.axis = .vertical
s.distribution = .equalSpacing
s.alignment = .fill
s.spacing = 10
//s.autoresizingMask = [.flexibleWidth, .flexibleHeight]
s.addArrangedSubview(self.generalTitle)
s.addArrangedSubview(self.jobBrand)
s.addArrangedSubview(self.jobName)
s.addArrangedSubview(self.directorName)
s.addArrangedSubview(self.AgencyName)
s.addArrangedSubview(self.prodCoName)
s.addArrangedSubview(self.technicalTitle)
s.addArrangedSubview(self.jobSpecsButton)
s.addArrangedSubview(self.cameraButton)
s.addArrangedSubview(self.SKCButton)
return s
}()
// SUPER VIEW DID LOAD
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = UIColor.white
}
// VIEW WILL APPEAR
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.tabBarController?.navigationItem.title = "Job Information"
self.tabBarController?.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .edit, target: self, action: #selector(HandleEditJob))
view.addSubview(stack)
jobInfoValues()
setupLayout()
}
// OBSERVE JOB
var job: Job?
// FILL IN TEXT FIELDS FROM FIREBASE
func jobInfoValues(){
jobBrand.text = job?.jobBrand
jobName.text = job?.jobName
directorName.text = job?.directorName
}
// BUTTONS & ACTIONS
#IBAction func HandleJobSpecs(sender : UIButton) {
let jobSpecs = page_jobSpecs()
show(jobSpecs, sender: self)
}
#IBAction func HandleCameraLenses(sender : UIButton) {
let cameras = page_camera_lenses()
show(cameras, sender: self)
}
#IBAction func HandleSKC(sender : UIButton) {
let shootKit = page_SKC()
show(shootKit, sender: self)
}
#IBAction func HandleEditJob(sender : UIButton) {
// CHANGE NAVIGATION BAR ITEM
self.tabBarController?.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(HandleJobEditDone))
// ALLOW TEXT FIELDS TO BE EDITABLE
jobBrand.isUserInteractionEnabled = true
jobName.isUserInteractionEnabled = true
directorName.isUserInteractionEnabled = true
AgencyName.isUserInteractionEnabled = true
prodCoName.isUserInteractionEnabled = true
// ADDING CLEAR BUTTON
jobBrand.clearButtonMode = .always
jobName.clearButtonMode = .always
directorName.clearButtonMode = .always
AgencyName.clearButtonMode = .always
prodCoName.clearButtonMode = .always
}
#IBAction func HandleJobEditDone(sender : UIButton) {
self.tabBarController?.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .edit, target: self, action: #selector(HandleEditJob))
jobBrand.isUserInteractionEnabled = false
jobName.isUserInteractionEnabled = false
directorName.isUserInteractionEnabled = false
AgencyName.isUserInteractionEnabled = false
prodCoName.isUserInteractionEnabled = false
// ADDING CLEAR BUTTON
jobBrand.clearButtonMode = .never
jobName.clearButtonMode = .never
directorName.clearButtonMode = .never
AgencyName.clearButtonMode = .never
prodCoName.clearButtonMode = .never
}
// CONSTRAINTS
private func setupLayout(){
// Auto layout constraints for jobInfo
generalTitle.topAnchor.constraint(equalTo: view.topAnchor, constant: 150).isActive = true
generalTitle.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
// Auto layout constraints for jobInfo
jobBrand.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
// Auto layout constraints for cameras
jobName.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
// Auto layout constraints for attachments
directorName.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
// Auto layout constraints for attachments
AgencyName.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
// Auto layout constraints for attachments
prodCoName.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
// Auto layout constraints for attachments
technicalTitle.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
// Auto layout constraints for attachments
jobSpecsButton.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
// Auto layout constraints for attachments
cameraButton.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
// Auto layout constraints for SKC
SKCButton.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
SKCButton.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -100).isActive = true
}
}

Answer 1

Please check the codes.
https://github.com/HsiaoAi/JobInfoStackoverflow/tree/master/JobInfoStackoverflow
Make sure your Json decoding is correct, because I found you used"director" in Firebase but "directorName" when init Job
I modified the "fetchJobs()" because I dont have the Firebase plist file
I modified 5 stuff and I marked them in code as "###", you can use search and check them, I hope it works for you too.