I have a problem with some code in my project. I want to set a UITableViewController with a prototype cell with three labels. When i click on the add button appears an add controller with three text fields to add some data. I want that this data appear in the cell's labels of the UITableViewController but i don't understand how to set code for this. Can you help me?
Wow, you really don't know much about tableViews. But its ok. Try to use this code for your table view...
import UIKit
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
#IBOutlet weak var tableview: UITableView!
let sampleData:[String] = ["data1", "data2", "data3", "data4", "data5"]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
//table view datasource and delegate
self.tableview.dataSource = self
self.tableview.delegate = self
self.tableView.tableFooterView = UIView(frame: CGRectZero)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
//returns number of rows in table view
return self.sampleData.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell:UITableViewCell = self.tableview.dequeueReusableCellWithIdentifier("Cell") as UITableViewCell
let label:UILabel = cell.viewWithTag(1) as UILabel
label.text = sampleData[indexPath.row]
return cell
}
func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
//user selected a row
//print the table view row number
println(indexPath.row)
}
}
Let me know if you have any questions.
Related
I am trying to use a UITableView by implementing the code I saw on many tutorials but it doesn't work correctly when I run it. What am I doing wrong? I added a cell to the view and added a corresponding identifier. My storyboard look like that
and code is the following:
import UIKit
import Firebase
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var ref: DatabaseReference?
var data = ["m","2","3"]
#IBOutlet weak var tableV: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
tableV.delegate = self
tableV.dataSource = self
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return data.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableV.dequeueReusableCell(withIdentifier: "PostCell")
cell?.textLabel?.text = data[indexPath.row]
return cell!
}
}
And
what it looks like.
Please help me to solve this problem.
You should use this way to correct errors.
change this:
let cell = tableV.dequeueReusableCell(withIdentifier: "PostCell")
with:
let cell = tableV.dequeueReusableCell(withIdentifier: "PostCell", for: indexPath)
and you need to check cell identifier.
I already read and saw some videos about this subject but i can't get this to work. Im trying to a cell from a xib instead of the storyboard.
This is my ViewController (where i have the Table View).
import UIKit
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 5
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! CellTableView
cell.test.text = "A";
return cell;
}
}
This is my CellTableView (the class where i have my Cell):
import UIKit
class CellTableView: UITableViewCell {
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
#IBOutlet var teste: UILabel!
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
I always used the Table View Cell inside the Table View on the StoryBoard but i want to try a XIB approach now.
I added the cell Identifier on the cell XIB to call it with the dequeueReusableCell method.
What i could be doing wrong? I tried to Outlet the dataSource and the delegate of the Table View but i got an error (and i think its not the right steps).
You need to register your nib object.
In viewDidLoad():
let nib = UINib(nibName: "nameOfYourNibFile", bundle: nil)
tableView.register(nib, forCellReuseIdentifier: "yourIdentifier")
You also need to return the number of sections:
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
First of all, You have to register your nib object.
yourTable?.register(UINib(nibName: "yourCustomCell", bundle: nil), forCellReuseIdentifier: "cellIdentifier")
I have a Viewcontroller with a Searchbar at the top with a tableview below. The tableview has a custom cell with 2 labels in it. My problem is that when i run the app and i select a row/cell everything inside the cell disappears. I then force the blank cell outside the visible area of the tableview, so it will be re-used. That's when everything inside the cell is back. Does anyone know why it behaves like this?
My Custom cell class (ContactCell.swift):
import UIKit
class ContactCell: UITableViewCell {
#IBOutlet var lblContactName: UILabel!
#IBOutlet var lblContactTitle: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
My ViewDidLoad function:
override func viewDidLoad() {
super.viewDidLoad()
tableView.dataSource = self
tableView.delegate = self
}
My Delegate and Datasource:
extension contactsTabelViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 6
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("contactCell", forIndexPath: indexPath) as! ContactCell
if let label = cell.lblContactName{
label.text = "This is a name"
}
if let label3 = cell.lblContactTitle{
label3.text = "This is a title"
}
return ContactCell()
}
}
The problem that caused this problem was that i returned ContactCell() instead of the variable cell
Solution was:
Change this:
return ContactCell()
to this:
return cell
in the cellForRowAtIndexPath function.
I am trying to build a times tables app with a slider and a UITableView, but it gives me the SIGABRT error. I have tried relinking every outlet and action as well as redoing it from scratch, but it still won't seem to work.
Since I cannot paste it in here correctly formatted, I put it on pastebin.com
Debug code: http://pastebin.com/cBaALXWq
ViewController.swift
import UIKit
class ViewController: UIViewController, UITableViewDelegate {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBOutlet weak var sliderValue: UISlider!
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 50
}
#IBAction func sliderMoved(sender: AnyObject) {
var timesTableIndex: Int = Int(sender.value)!
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "Cell")
cell.textLabel?.text = String(timesTableIndex*indexPath.row+1)
return cell
}
}
}
AppDelegate.swift; gives error in line 4
import UIKit
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
EDIT
#IBOutlet weak var sliderValue: UISlider!
var timesTableIndex: Int?
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 50
}
#IBAction func sliderMoved(sender: AnyObject) {
timesTableIndex = Int(sliderValue.value * 50)
}
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "Cell")
cell.textLabel.text = String(timesTableIndex*(1+indexPath.row))
return cell
}
I looks like you've added cellForRowAtIndex: inside #IBAction method. What you need to do is to take it out from the method. In addition you need set the timesTableIndex variable as global so that it can be accessed in cellForRowAtIndexPath: and call the reloadData method on tableView when you call sliderMoved: method.
var timesTableIndex: Int = 0 // Now global variable
#IBAction func sliderMoved(sender: AnyObject) {
timesTableIndex = Int(sender.value)!
self.tableView.reloadData()
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath)
cell.textLabel?.text = "\(timeTableIndex * indexPath.row + 1)"
return cell
}
Also it seems that you are not using dequeueReusableCellWithIdentifier method on your table view, so I've updated the code to use it. Not that you need to set the Cell reuse identifier in your storyboard.
This should be your tableview code if you have created tableview in the storyboard
#IBOutlet weak var sliderValue: UISlider!
#IBOutlet weak var tableview: UITableView!
var timesTableIndex: Int = 0
#IBAction func sliderMoved(sender: AnyObject) {
timesTableIndex = Int(sliderValue.value * 50)
tableview.reloadData()
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return timesTableIndex
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)
cell.textLabel!.text = String(1*(1+indexPath.row))
return cell
}
If you have created your cell in the storyboard set the CellReuseIdentifier as 'cell' in the storyboard else you can register the class in the like
override func viewDidLoad() {
super.viewDidLoad()
//tableView is IBOutlet instance of UITableview
tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "test")
}
Also please check you have set the tableview delegate/datasource in the storyboard tableview object
I've managed to solve the problem. I accidentally put the function which sets up the prototype cell outside the ViewController class, that explains everything. Thank you for helping me!
I am trying to use a Table View with cell inside of UIViewController and I want each row to have a button in it. The reason I am using UIViewController instead of UITableView is because I want to have other stuff in that view instead of the whole screen taken by table view.
problem I am having is I only see one button in the last cell. How I can fix this so each row has button in it?
I was hoping that could use something like this
import UIKit
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
#IBOutlet weak var logButton: UIButton!
#IBOutlet weak var mytableView: UITableView!
let carLocations = ["Row One", "Row Two", "Row Three"]
override func viewDidLoad() {
super.viewDidLoad()
mytableView.dataSource = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return carLocations.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let myCell: UITableViewCell = mytableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)
myCell.textLabel?.text = carLocations[indexPath.row]
myCell.detailTextLabel?.text = " Detailed text"
logButton.tag = indexPath.row
// I was hoping that I could use something like this
// myCell.logButton.tag = indexPath.row
return myCell
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if (editingStyle == UITableViewCellEditingStyle.Delete) {
// handle delete (by removing the data from your array and updating the tableview)
}
}
}
You can use Custom Cell this way.
Create a new swift file with subclass of UITableViewCell.
Assign that class to your cell by selecting your cell and go to Identity Inspector and it will look a like:
And add elements into your cell which you need for example I have added two labels and one button into cell as per your need and cell will look like:
After that connect outlet of that element into your custom call and your Custom tableview cell class will be:
import UIKit
class TableViewCell: UITableViewCell {
#IBOutlet weak var titleLbl: UILabel!
#IBOutlet weak var DetailLabel: UILabel!
#IBOutlet weak var btn: UIButton!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
Now you can create a custom cell with custom tableview cell class this way in your cellForRowAtIndexPath method:
let myCell = mytableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! TableViewCell
And you can assign values to it this way:
myCell.titleLbl.text = carLocations[indexPath.row]
myCell.DetailLabel.text = "Detailed Text"
myCell.btn.tag = indexPath.row
And final code will be:
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let myCell = mytableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! TableViewCell
myCell.titleLbl.text = carLocations[indexPath.row]
myCell.DetailLabel.text = "Detailed Text"
myCell.btn.tag = indexPath.row
return myCell
}
And your result will be:
Check this sample for more Info.
Drop a UITableViewCell on your tableview. That will give you option to customize your cell's look and feel. Create a new class inheriting from UITableViewCell and add that as a class to your tableview cell. Create outlets from cell to this new file and then use cellForRowAtIndexPath to set the properties of the controls inside your cell.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cell") as! CBTableViewCell
// add self as delegate for tablecell so delegate can call the function defined within
cell.delegate = self
cell.title.text = self.items[indexPath.row]
return cell
}
I would use Custom Cells to solve this problem...
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell:CustomCell = tableView.dequeueReusableCellWithIdentifier("CustomCell") as! CustomCell
//Do sth
return cell
}
Your cell:
import UIKit
class CustomCell: UITableViewCell {
#IBOutlet var Button: UIButton!
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
}
Actually it is very easy: You just drag a UITableView into your view in the size you want. You add a prototype cell to it and then you customise that cell by dragging in labels, etc. You make a new class, which inherits from that UITableViewCell as explained earlier. You also connect the labels and buttons to the class as explained i the other answers. Apple has a very good explanation here Go to the section where they explain how to customise the cell.