In my app I have a table view that lists out friend's names and when you click on the names in the table view it is supposed to perform a segue into another view controller that stores this friends information. Although I can click on the rows, it is not performing the segue into the friend information view controller. Any ideas on how to fix this? Thanks in advance! :)
#IBOutlet weak var tableView: UITableView!
var friends = ["A","B","C","D"]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.tableView.dataSource = self
self.tableView.dataSource = self
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.friends.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = UITableViewCell()
let friend = self.friends[indexPath.row]
cell.textLabel!.text = friend
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
self.performSegueWithIdentifier("detailSegue", sender: nil)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let listVC = segue.destinationViewController as! FriendDetailViewController
}
You should assign in the tableView delegate to the view controller
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after
loading the view, typically from a nib.
self.tableView.dataSource = self
self.tableView.delegate = self
}
And of course add this :
class ViewController : ... , UITableViewDelegate
Related
I am using swift 2 beaucse my lappy does not suppoeted swift 3 beacuse of some issue.
I want to pass data from view controller to table view controller ..
but i got some error and here is my code
I want to pass value form view controller .I am using label . whatever i will write in label it will disply in table view controller. so it will REALTIME value !
I am using two view controller and one table view controller ...i have error in table view controller.
I have some errors
1) cell1.textLabel!.text = tblLable.text! // error UItableview has no memeber in 'text'
view controller
#IBOutlet var labelText: UITextField!
override func viewDidLoad()
{
super.viewDidLoad()
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
{
let DestViewController:PassDataView = segue.destinationViewController as! PassDataView
DestViewController.passdata = labelText.text!
//print(DestViewController.passdata)
}
passdataview
#IBOutlet var Label: UILabel!
var passdata=String()
override func viewDidLoad()
{
Label.text=passdata
}
}
tableviewcontroller
override func viewDidLoad() {
super.viewDidLoad()
//myTableView.delegate = self;
// myTableView.dataSource = self;
}
#IBOutlet var tblLable: UITableView!
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 10
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
{
let DestViewController:PassDataView = segue.destinationViewController as! PassDataView
DestViewController.passdata = tblLable.text!// error UItableview has no memeber in 'text'
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
let cell1 = tableView.dequeueReusableCellWithIdentifier("cell1", forIndexPath: indexPath)
cell1.textLabel!.text = tblLable.text! // error UItableview has no memeber in 'text'
return cell1
}
You have to declare String variable in your 3rd View Controller (Table View Controller) like
var myString: String = ""
override func viewDidLoad() {
super.viewDidLoad()
}
You can assign value to myString variable from your first view controller like
let DestViewController:tableviewcontroller = segue.destinationViewController as! tableviewcontroller
DestViewController.myString = labelText.text!
And your your tableview view method will be like
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
let cell1 = tableView.dequeueReusableCellWithIdentifier("cell1", forIndexPath: indexPath)
cell1.textLabel!.text = myString
return cell1
}
The Above is the solution, below i am explaining what was the problem
There is no such text method for UITableview, hence you were getting error at
DestViewController.passdata = tblLable.text! //In first View Controller
cell1.textLabel!.text = tblLable.text! //In second View controller
I am new here and to coding and I need some help with a project that I'm currently stuck on.
I have built an app containing UITableView that first displays body areas (Gastro, cardio, respiratory, etc), the second displays more detailed features on the first (in gastro the table will display stomach, small intestine, colon, etc) and then the the UIViewController will have the more detailed info on the stomach etc.
I have this working all ok but one problem has arose. The UIViewController, regardless of which option is selected in the first table, displays the same info, i.e I get results for gastro even after selecting cardio etc.
The UIviewcotrollers have the storyboards identifiers G1, G2 etc as shown in 'Subchapters' under identities.
I want G1 and the rest of the G series to only display gastro info and then create new view controllers for cardio, C1, C2 etc and so on for the rest of the chapters.
Below is my code. I hope someone could help with this. I would really appreciate it!
import UIKit
class Chapters: UITableViewController {
var ChaptersArray = [String]()
var SubchaptersArray = [secondTable]()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
// chapter names
ChaptersArray = ["Gastrointestinal","Cardiovascular","Respiratory","Central Nervous System", "Infections"]
// subcharpter names
SubchaptersArray = [secondTable(SecondTitle: ["Gas1", "Gas2", "Gas3", "Gas4"]),
secondTable(SecondTitle: ["Card1", "Card2", "Card3", "Card4"]),
secondTable(SecondTitle: ["Res1", "Res2", "Res3", "Res4"])]
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func tableView(tableview: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableview.dequeueReusableCellWithIdentifier("Cell") as UITableViewCell!
cell.textLabel?.text = ChaptersArray[indexPath.row]
return cell
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return ChaptersArray.count
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let indexPath: NSIndexPath = self.tableView.indexPathForSelectedRow!
let destViewController = segue.destinationViewController as! Subchapters
var secondTableArrayTwo : secondTable
secondTableArrayTwo = SubchaptersArray[indexPath.row]
destViewController.SubChaptersArray = secondTableArrayTwo.SecondTitle
}
}
import UIKit
class Subchapters: UITableViewController {
var SubChaptersArray = [String]()
var identities = [String]()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
identities = ["G1", "G2", "G3", "G4"]
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return SubChaptersArray.count
}
override func tableView(tableview: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableview.dequeueReusableCellWithIdentifier("SecondCell") as UITableViewCell!
cell.textLabel?.text = SubChaptersArray[indexPath.row]
return cell
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let vcName = identities[indexPath.row]
let viewcontroller = storyboard?.instantiateViewControllerWithIdentifier(vcName)
self.navigationController?.pushViewController(viewcontroller!, animated: true)
}
}
I have searched google and here for an answer but could find nothing to help, so any explanations as to how to fix this problem would be great and much appreciated.
Thanks
Mark
I am new here and to coding and I need some help with a project that I'm currently stuck on.
I have built an app containing UITableView the first displays body areas (Gastro, cardio, respiratory, etc), the second displays more detailed features on the first (in gastro the table will display stomach, small intestine, colon, etc) and then the the UIViewController will have the more detailed info on the stomach etc.
I have this working all ok but one problem has arose. The UIViewController, regardless of which option is selected in the first table, displays the same info, i.e I get results for gastro even after selecting cardio etc.
Below is my code. I hope someone could help with this. I would really appreciate it!
import UIKit
class Chapters: UITableViewController {
var ChaptersArray = [String]()
var SubchaptersArray = [secondTable]()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
// chapter names
ChaptersArray = ["Gastrointestinal","Cardiovascular","Respiratory","Central Nervous System", "Infections"]
// subcharpter names
SubchaptersArray = [secondTable(SecondTitle: ["Gas1", "Gas2", "Gas3", "Gas4"]),
secondTable(SecondTitle: ["Card1", "Card2", "Card3", "Card4"]),
secondTable(SecondTitle: ["Res1", "Res2", "Res3", "Res4"])]
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func tableView(tableview: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableview.dequeueReusableCellWithIdentifier("Cell") as UITableViewCell!
cell.textLabel?.text = ChaptersArray[indexPath.row]
return cell
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return ChaptersArray.count
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let indexPath: NSIndexPath = self.tableView.indexPathForSelectedRow!
let destViewController = segue.destinationViewController as! Subchapters
var secondTableArrayTwo : secondTable
secondTableArrayTwo = SubchaptersArray[indexPath.row]
destViewController.SubChaptersArray = secondTableArrayTwo.SecondTitle
}
}
import UIKit
class Subchapters: UITableViewController {
var SubChaptersArray = [String]()
var identities = [String]()
var data = [String]()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
identities = ["G1","G2","G3","G4"]
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return SubChaptersArray.count
}
override func tableView(tableview: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableview.dequeueReusableCellWithIdentifier("SecondCell") as UITableViewCell!
cell.textLabel?.text = SubChaptersArray[indexPath.row]
return cell
}
// ignore
// override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// let destViewController = segue.destinationViewController as! DrugNotes
// destViewController.FirstString = "drug data: need to seperate out to seperate pages" }
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let vcName = identities[indexPath.row]
let viewcontroller = storyboard?.instantiateViewControllerWithIdentifier(vcName)
self.navigationController?.pushViewController(viewcontroller!, animated: true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
I get an error by the IBoutlet of tableView saying "cannot override with stored property "tableView"". I'm not quite sure what this means, any type of help will be appreciated.
import UIKit
class UsersViewController: UITableViewController {
#IBOutlet var tableView: UITableView!
var users = ["Marc", "Mark" , "Louise", "Ahinga", "Amossi", "Kalenga"]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(tableView:UITableView, numberOfRowsInSection section:Int) -> Int {
return 3
}
override func tableView(tableView:UITableView, cellForRowAtIndexPath indexPath:NSIndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! userCell
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
}
}
A UITableViewController comes with a UITableView built in, aptly named tableView. In the code you pasted you are adding an extra UITableView to it and giving it the same name. That's what the compiler is complaining about.
In theory, when you are using a plain vanilla UITableViewController from the storyboard you should not link the table to an IBOutlet. That's taken care of.
If you are building something more sophisticated that needs an extra UITableViewController on top of the one that the class provides in storyboard, then you should name it differently.
you have to set as it's delegate and dataSource in viewDidLoad() like this
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.delegate = self
self.tableView.dataSource = self
}
I'm trying to pass the indexPath.row data from the selected cell to the next view controller using both the didSelectCellAtIndexPath and the prepareForSegue methods but the value isnt passing through.
Code for both ViewControllers is show below:
import UIKit
class MainMenu: UIViewController, UITextFieldDelegate, UITableViewDelegate, UITableViewDataSource {
// array of the menu options
let mainMenuOptions = ["Exercises 1", "Exercises 2", "Exercises 3"]
// UITableView
#IBOutlet weak var exerciseOptions: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
exerciseOptions.delegate = self
exerciseOptions.dataSource = self
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// Table configuration
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "ExercisesTableViewCells"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! ExercisesTableViewCell
cell.textLabel!.text = mainMenuOptions[indexPath.row]
return cell
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 3
}
// Segue to VC based on row selected
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
if indexPath.row == 0{
self.performSegueWithIdentifier("SegueToExercises", sender: self)
}
else if indexPath.row == 1{
self.performSegueWithIdentifier("SegueToExercises", sender: self)
}
else{
self.performSegueWithIdentifier("SegueToReminders", sender: self)
}
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if (segue.identifier == "SegueToExercise"){
let viewController = segue.destinationViewController as? ExerciseMenu
viewController!.mainMenuValue = exerciseOptions.indexPathForSelectedRow!.row
}
}
For the Second View Controller:
import UIKit
class ExerciseMenu: UIViewController, UITextFieldDelegate, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var exerciseOptionsTitle: UILabel!
#IBOutlet weak var exerciseOptionsTable: UITableView!
#IBAction func beginWorkout(sender: AnyObject) {
}
// receives data from MainMenu
var mainMenuValue: Int!
override func viewDidLoad() {
super.viewDidLoad()
exerciseOptionsTable.delegate = self
exerciseOptionsTable.dataSource = self
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "ExerciseMenuCell"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! ExercisesTableViewCell
cell.textLabel!.text = String(mainMenuValue)
return cell
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
See this thread for possible explanations for this behavior.
The first step of troubleshooting would be to put a breakpoint in your prepareForSegue method to see if exerciseOptions.indexPathForSelectedRow is already nil at that point, in which case something is happening before the segue even occurs that's messing with the value (which the link above can help you diagnose).
Try making a property in your table view controller called something like selectedRow, and in didSelectRowAtIndexPath, set self.selectedRow = indexPath.row. This way you have your own variable that'll be more reliable than exerciseOptions.indexPathForSelectedRow. Then change the code in prepareForSegue appropriately. So to give you the full methods as I'm envisioning them:
(As a property of the first view controller) var selectedRow: Int?
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
if indexPath.row == 0{
self.performSegueWithIdentifier("SegueToExercises", sender: self)
self.selectedRow = 0
}
else if indexPath.row == 1{
self.performSegueWithIdentifier("SegueToExercises", sender: self)
self.selectedRow = 1
}
else{
self.performSegueWithIdentifier("SegueToReminders", sender: self)
self.selectedRow = indexPath.row
}
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if (segue.identifier == "SegueToExercise"){
let viewController = segue.destinationViewController as? ExerciseMenu
viewController!.mainMenuValue = self.selectedRow!
}
}
Disclaimer: I'm still learning Swift, so my judgment regarding optionals/optional unwrapping might be unideal for a technical reason I'm not aware of, but the overall theory here is sound, I think.