I have an array of tuples that is created from a JSON.
typealias TagAndLocation = (tag: String, location: String)
var resultTuples = [TagAndLocation]()
for (_, subJSON) in json {
let Tag = subJSON["Tag"].string!
let Location = subJSON["Location"].string!
let tagloc = (tag: Tag, location: Location)
resultTuples.append(tagloc)
}
Then I'll use
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "CellConcert")
//PROBLEM IS HERE. I want the indexPath.row to be the position of the array of tupple
cell.textLabel?.text = resultTuples.[indexPath.row][]
return cell
}
Basically i want my tableView to have the content of concerts.
Any idea? Thanks
Related
Essentially I am adding or removing the cell values to an array that is built up based on which cells are selected/deselected.
I need my array to look like this:
[{"value":"One","id":"1"},{"value":"two","id":"4"}]
Currently it looks like this:
["One", "two"]
Currently the array does not include the struct titles (id and value) and does not include the curly brackets. The values for the id and values are coming from the array populating the tableview. How can this be done?
My code so far:
var structure = [Struct]()
var selectionArray: [String] = []
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath)
cell!.accessoryType = .checkmark
let item = structure[indexPath.row]
let cellvalue = item.value
selectionArray.append(cellvalue)
}
override func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath)
cell!.accessoryType = .none
let item = structure[indexPath.row]
let cellvalue = item.value
if let index = selectionArray.index(of: cellvalue) {
selectionArray.remove(at: index)
}
}
struct Struct: Decodable {
let id: Int
let value: String
}
You don't need to store the selectionArray array as a property at all. You can use indexPathsForSelectedRows to get all the selected rows. So you can generate the array whenever you need it.
let selectedIndexPaths = tableView.indexPathsForSelectedRows ?? []
// this contains the selected structs
let selectedStructs = selectedIndexPaths.map { structure[$0.row] }
Now you can encode it to JSON:
// remember to conform Struct to Codable!
let encoder = JSONEncoder()
do {
let jsonData = try encoder.encode(selectedStructs)
// if you want to see the encoded JSON string:
print(String(data: jsonData, encoding: .utf8)!)
} catch {
print(error)
}
I have one tableview containing data that is fed from an Array with 14 entries. I have added a search bar where I can filter this data and this works fine, but when I try to send the filtered data to a second table view, the data that is sent is the count of my filtered data. So if I search something starting with G(13th and 14th place in my array), that brings back two results which is fine but when I choose the first entry off my filtered data(the two results), the data that is passed to the second Table View is the [0] entry(A) of my initial TVC and not the 13th(G12).So depending on the filtered data I always get the first few entries of my initial array.
struct ImageForManuf {
let image: UIImage
let name: String
init(nameInit: String) {
self.name = nameInit
image = UIImage(named: nameInit)!
}
}
struct SecondTable {
var secondTitle : [String]
var pic : [UIImage?]
}
//for search bar
#IBOutlet weak var searchBar: UISearchBar!
var filteredData: [ImageForManuf]!
var searching = false
var firstArray = [ImageForManuf]()
//we are adding elements on the SecondTable structure
var secondArray = [SecondTable]()
override func viewDidLoad() {
super.viewDidLoad()
//for search bar
searchBar.delegate = self
filteredData = firstArray
firstArray = [ "A","A2","B3","B4","B5","C6","C7","D8","E9","F10","F11","G12","G13","H14",
].map(ImageForManuf.init(nameInit:))
filteredData = firstArray
secondArray = [SecondTable(secondTitle: ["A1"],
pic: [UIImage(named: "A1")]),
SecondTable(secondTitle: ["B1","B2","B3"],
pic: [UIImage(named: "B1"),UIImage(named: "B2"),UIImage(named: "B3")]),
SecondTable(secondTitle: ["C1","C2"],
pic: [UIImage(named: "C1"),pic: [UIImage(named: "C2")]),
SecondTable(secondTitle: ["D1"],
pic: [UIImage(named: "D1"),
SecondTable(secondTitle: ["E1"],
pic: [UIImage(named: "E1"),
SecondTable(secondTitle: ["F1","F2"],
pic: [UIImage(named: "F1"),pic: [UIImage(named: "F2")]),
SecondTable(secondTitle: ["G1","G2"],
pic: [UIImage(named: "G1"),pic: [UIImage(named: "G2")]),
SecondTable(secondTitle: ["H1"],
pic: [UIImage(named: "H1")
]
This is my TV configuration
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
if searching
{
return filteredData.count
}else{
return firstArray.count
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let Cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! TableTableViewCell
Cell.textLabel?.textColor = .systemBlue
Cell.textLabel?.font = .boldSystemFont(ofSize: 20)
if searching
{
Cell.textLabel?.text = filteredData[indexPath.row].name
Cell.imageManuf?.image = filteredData[indexPath.row].image
}else{
Cell.textLabel?.text = firstArray[indexPath.row].name
Cell.imageManuf?.image = filteredData[indexPath.row].image
}
return Cell
}
//we need to create a variable that can hold the destination view controller
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if searching {
let row = self.tableView?.indexPathForSelectedRow?.row ?? 0
let destViewController = segue.destination as! SecondTableViewController var secondTableArray : SecondTable
secondTableArray = secondArray[row]
destViewController.secondTableVcArray = secondTableArray.secondTitle
destViewController.detailVcArray = thirdArray[row]
}else{
let row = self.tableView?.indexPathForSelectedRow?.row ?? 0
let destViewController = segue.destination as! SecondTableViewController
var secondTableArray : SecondTable
secondTableArray = secondArray[row]
secondTableArray created in SecondTableViewController
destViewController.secondTableVcArray = secondTableArray.secondTitle
destViewController.detailVcArray = thirdArray[row]
}
}
Lastly this is my searchBar configuration
//Mark: Search Bar config
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
filteredData = firstArray.filter({$0.name.lowercased().prefix(searchText.count) == searchText.lowercased()})
searching = true
//to reload the data
self.tableView.reloadData()
}
func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
searching = false
searchBar.text = ""
tableView.reloadData()
}
This is the second TVC:
class SecondTableViewController: UITableViewController {
//we are loading the secondArray via the secondTableVcArray
var secondTableVcArray = [String]()
//we are loading the thirdArray via the detailVcArray
var detailVcArray : [DetailView]?
override func viewDidLoad() {
super.viewDidLoad()
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return secondTableVcArray.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCell(withIdentifier: "secondCell", for: indexPath) as! SecondTableViewCell
cell.textLabel?.textColor = .white
cell.textLabel?.font = .boldSystemFont(ofSize: 20)
//we load the data of the secondTableVcArray to our cell
cell.textLabel?.text = secondTableVcArray[indexPath.row]
return cell
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
guard let row = self.tableView?.indexPathForSelectedRow?.row else {
print("Error: problem with second table view or selection")
return
}
guard let dest = segue.destination as? DetailsViewController else {
print("Error: couldn't find expected DetailsViewController")
return
}
guard let details = detailVcArray else {
print("Error: data not set for SecondTableViewController")
return
}
dest.displayDetail = details[row]
}
}
Can somebody help with the row element of my prepareforSeque method and advice the syntax on how to get the indexPath of my firstArray as #vadian suggested? The second condition works fine(not searching) but I don't seem to be able to pull the right item from my DataSource in the searching condition.
I would like to get the final result joblist array to use outside closure. Because I would like to setup a tableview by using Joblist array. .
let geoCoder = CLGeocoder()
geoCoder.geocodeAddressString(address) { (placemarks, error) in
if error == nil && (placemarks?.count)! > 0 {
let location2 = placemarks?[0].location
if let location1 = self.locationManager?.location {
let distanceInMeters = location1.distance(from: location2!)
let IntDis = Int(distanceInMeters)
//print(IntDis)
if IntDis < 40000 {
//print(address)
if let activityid = infoDictionary["ActivityID"] {self.newJob.ActivityID=activityid}
if let companyname = infoDictionary["CompanyName"] {self.newJob.CompanyName=companyname}
if let quantity = infoDictionary["Quantity"] {self.newJob.Quantity=quantity}
if let coupontitle = infoDictionary["Title"] {self.newJob.CouponTitle=coupontitle}
if let couponterms = infoDictionary["Terms"] {self.newJob.CouponTerms=couponterms}
if let expirdate = infoDictionary["ExpirDate"] {self.newJob.ExpirDate=expirdate}
if let contactperson = infoDictionary["ContactPerson"] {self.newJob.ContactPerson=contactperson}
if let tel = infoDictionary["TEL"] {self.newJob.TEL=tel}
self.joblist.append(self.newJob)
//print(self.joblist)
//self.tableView.reloadData()
}
}
}
}
You can do this in two ways:
Make the joblist variable global so it can be accessed from multiple places
Use a callback, which calls a new function while passing on previously gathered data. This is especially useful when the original "data getting" proces is a network task with a delay.
Global variables:
let geoCoder = CLGeocoder()
var jobList = [AnyClass]() //make a global array
geoCoder.geocodeAddressString(address) { (placemarks, error) in
...filtering code ...
joblist.append(self.newJob)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
cell.textLabel = jobList[indexPath.row].ActivityID //or something else with the data
}
Using a callback(simple version which doesn't pass on itself to the next function):
geoCoder.geocodeAddressString(address) { (placemarks, error) in
...filtering code ...
doTableViewStuff(data: joblist)
}
func doTableViewStuff(data: [Jobs]) { //or whatever type of data
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
cell.textLabel = data[indexPath.row].ActivityID //or something else with the data
}
}
i'm trying to get my tableview to index my array correctly but it keeps randomising the dictionary values shown in the table view . Where am I going wrong?
code is as follows:
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! _VCTableViewCell
// Schemes
let kbSchemes: [Int: [String]] = [
0: ["1","2","3","4","5","6"],
1: ["1","2","3","4","5","6"],
2: ["1a","1b","2a","2b","3a","3b","4"],
3: ["1a","1b","1c","1d","1e","1f"],
4: ["1a","1b","1c","2a","2b","2c"]
]
let randomSchemeIndex = Int(arc4random_uniform(UInt32(kbSchemes.count)))
let schemeArray = kbSchemes[randomSchemeIndex]
// Exercise, Sets & Reps
let randomIndex = Int(arc4random_uniform(UInt32(kbDirectory.count)))
let dictValues = Array(kbDirectory.values)
let randomArray = dictValues[randomIndex]
let randomArrayIndex = Int(arc4random_uniform(UInt32(randomArray.count)))
let randomValue = randomArray[randomArrayIndex]
let dictKeys = Array(kbDirectory.keys)
// cell control
cell.exerciseLabel?.text = dictKeys[randomIndex]
cell.setRepLabel?.text = randomValue
cell.numberLabel?.text = schemeArray?[indexPath.row]
return cell
}
I would also like to be able the .count property for the returned kbSchemeArray later on in numberOfRowsInSection but am having issues getting it into the correct scope. any suggestions and/or advice appreciated.
Hello can you help me I want to display in an TableView an array of objects but only one compoment of the array.
here my code:
extension ViewController: UITableViewDataSource {
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as UITableViewCell
let index = indexPath.row as Int
for dep in autoCompleteDestino {
DestinoInstancia.idDestino = dep.idDestino!
DestinoInstancia.desDestino = dep.desDestino!
autoCompleteDestino.append(dep)
}
print(autoCompleteDestino)
cell.textLabel?.text = String(describing: autoCompleteDestino[index])
return cell
}
}
So..i want to show in this line, only the DestinoInstancia.desDestino = dep.desDestino!
cell.textLabel?.text = String(describing: autoCompleteDestino[index])
Currently shows me this way:
MTiOS.Destinos(idDestino: Optional(1), desDestino: Optional("Asunción")), MTiOS.Destinos(idDestino: Optional(2), desDestino: Optional("Miami")), MTiOS.Destinos(idDestino: Optional(3), desDestino: Optional("Atenas")), MTiOS.Destinos(idDestino: Optional(5), desDestino: Optional("Madrid"))]
When i want to show me only:
Asunción
Miami
Atenas
Madrid
Please Help!
I think the issue lies in the String conversion and unwrapped optionals.
Try replacing this:
cell.textLabel?.text = String(describing: autoCompleteDestino[index])
With this:
if let str = autoCompleteDestino[index].desDestino {
cell.textLabel?.text = str
}
This replacement safely unwraps the optional while also retrieving the correct string.