I'm using the latest beta of Xcode 7. I'm programming a simple UITableView, but this doesn't work well, the inspector error doesn't show anithing but when I start the simulator, the App crash. Can someone help me?
// RestaurantTableViewController.swift
import UIKit
class RestaurantTableViewController: UITableViewController {
var restaurantNames = ["Cafe Deadend", "Homei", "Teakha", "Cafe Loisl", "Petite Oyster", "For Kee Restaurant", "Po's Atelier", "Bourke Street Bakery", "Haigh's Chocolate", "Palomino Espresso","Upstate","Traif","Graham Avenue Meats","Waffle & Wolf", "Five Leaves", "Cafe Lore", "Confessional", "Barrafina", "Donostia", "Rpyal Oak", "Thai Cafe"]
var restaurantImages = ["cafedeadend.jpg", "homei.jpg", "teakha.jpg", "cafeloisl.jpg",
"petiteoyster.jpg", "forkeerestaurant.jpg", "posatelier.jpg", "bourkestreetbakery.jpg",
"haighschocolate.jpg", "palominoespresso.jpg", "upstate.jpg", "traif.jpg",
"grahamavenuemeats.jpg", "wafflewolf.jpg", "fiveleaves.jpg", "cafelore.jpg",
"confessional.jpg", "barrafina.jpg", "donostia.jpg", "royaloak.jpg", "thaicafe.jpg"]
override func viewDidLoad() {
super.viewDidLoad()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
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 {
// #warning Incomplete implementation, return the number of rows
return self.restaurantNames.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("reuseIdentifier", forIndexPath: indexPath)
// Configure the cell...
cell.textLabel!.text = restaurantNames[indexPath.row]
cell.imageView?.image = UIImage(named: restaurantImages[indexPath.row])
return cell
}
}
Related
I have an issue when I'm trying to pass the information from the database from Parse to my TableViewController. I think that is the way I'm calling to the name and password.
When I push the View Users button the app crash.
I put my git if you need more information. https://github.com/emmanuelcu/ParseProject.git
class TableViewController: UITableViewController{
var dataParse:NSMutableArray = NSMutableArray()
var count:Int = 0
override func viewDidLoad() {
super.viewDidLoad()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
//PFQuery
let query = PFQuery(className: "LoginCredentials")
query.findObjectsInBackgroundWithBlock {
(objects: [PFObject]? , error: NSError?) -> Void in
if(error == nil){
print("The current number of users is \(objects!.count)")
self.count = objects!.count
self.tableView.reloadData()
} else {
print("Error")
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
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 {
// #warning Incomplete implementation, return the number of rows
//return self.dataParse.count
return self.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "CellData"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! TableViewCell
// Configure the cell...
cell.password.text = dataParse[indexPath.row]["name"] as? String
cell.name.text = dataParse[indexPath.row]["user"] as? String
print("Error")
return cell
}
When you run your query you never assign your objects to your data source, only the number of objects that you receive. Also you're force unwrapping that count without checking if objects has a count, which is possible even without an error.
It works like this dataParse array is empty you should populate it, or should disable view users button when it is empty etc.
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "CellData"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! TableViewCell
// Configure the cell...
if dataParse.count > indexPath.row {
cell.password.text = dataParse[indexPath.row]["name"] as? String
cell.name.text = dataParse[indexPath.row]["user"] as? String
}
print("Error")
return cell
}
I am trying to implement an alarm clock app just like apple's Clock app.On the click of Edit button on the left hand side I want to make table enter into Editing mode with red circles on left side of every cell(custom UITableViewCell) And on the click of that red circle want to show "Delete" button/action on the right side.
I have been trying a lot and went through many sites but still could not figure out. Can someone please see what mistake I am making?
I have referred below and many others links:
How to enable swipe to delete cell in a TableView?
UITableViewCell, show delete button on swipe
class SavedAlarmListViewController: UIViewController,UITableViewDataSource,UITableViewDelegate{
#IBOutlet weak var tableView: UITableView!
var alarms = [AlarmDataObject]()
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.delegate = self
self.tableView.dataSource = self
self.navigationItem.leftBarButtonItem = self.editButtonItem()
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(true)
refreshList()
}
func refreshList() {
alarms = AlarmsList.sharedInstance.allSavedAlarms()
tableView.reloadData()
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return alarms.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "cell"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! AlarmTableViewCell
// custom code to set data ....
return cell
}
func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return true // all cells are editable
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if editingStyle == .Delete {
let alarm = alarms.removeAtIndex(indexPath.row)
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
AlarmsList.sharedInstance.removeAnAlarm(alarm)
}
}
}
class AlarmTableViewCell:UITableViewCell {
// IBOutlets
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
}
You should implement
tableView(_:editingStyleForRowAtIndexPath:) and return .Delete
I'm using the Beginning Swift Programming book by AppCoda and I can't seem to figure out what is wrong with this block of code.
import UIKit
class ViewController: UIViewController, UITableViewDataSource, 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.
}
var restaurantNames = ["Cafe Deadend", "Homei", "Teakha", "CafeLoisl", "Petite Oyster", "For Kee Restaurant", "Po's Atelier", "Bourke Street Bakery", "Haigh’s Chocolate", "Palomino Espresso", "Upstate", "Traif", "Graham Avenue Meats And Deli", "Waffle & Wolf", "Five Leaves", "Cafe Lore", "Confessional", "Barrafina", "Donostia", "Royal Oak", "CASK Pub and Kitchen"]
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// Return the number of rows in the section.
return restaurantNames.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) ->
UITableViewCell {
let cellIdentifier = "Cell"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as UITableViewCell
// Configure the cell...
cell.textLabel.text = restaurantNames[indexPath.row]
return cell
}
}
This line is throw a 'AnyObject is not convertible to 'UITableViewCell'
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as UITableViewCell
I'm really new to Swift and iOS programming in general so any help would be appreciated.
You need to change as to as!
var cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! UITableViewCell
Also make sure that you have added a prototype cell to your storyboard with the reusable string name "Cell"
//MARK: Tableview
func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int
{
return tabledata.count
}
func tableView(tableView: UITableView!,
cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell!
{
let cell:UITableViewCell = UITableViewCell(style:UITableViewCellStyle.Default, reuseIdentifier:"Cell")
cell.textLabel?.text = tabledata[indexPath.row]
return cell
}
I have used this code for tableview....You can change this according to your need.Even I'm new in swift or else I would've correct your code.
In swift, if I create a new cocoa touch class of type UITableViewController, I am given this file called TableViewController.swift:
import UIKit
class TableViewController: UITableViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Potentially incomplete method implementation.
// Return the number of sections.
return 0
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete method implementation.
// Return the number of rows in the section.
return 0
}
/*override func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {
let cell = tableView.dequeueReusableCellWithIdentifier("reuseIdentifier", forIndexPath: indexPath) as UITableViewCell
// Configure the cell...
return cell
}*/
/*
// Override to support conditional editing of the table view.
override func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool {
// Return NO if you do not want the specified item to be editable.
return true
}
*/
/*
// Override to support editing the table view.
override func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) {
if editingStyle == .Delete {
// Delete the row from the data source
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
} else if editingStyle == .Insert {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
override func tableView(tableView: UITableView!, moveRowAtIndexPath fromIndexPath: NSIndexPath!, toIndexPath: NSIndexPath!) {
}
*/
/*
// Override to support conditional rearranging of the table view.
override func tableView(tableView: UITableView!, canMoveRowAtIndexPath indexPath: NSIndexPath!) -> Bool {
// Return NO if you do not want the item to be re-orderable.
return true
}
*/
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
}
When I uncomment this provided method:
override func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {
let cell = tableView.dequeueReusableCellWithIdentifier("reuseIdentifier", forIndexPath: indexPath) as UITableViewCell
// Configure the cell...
return cell
}
I am greeted with this compiler error: "Overriding method with selector 'tableView: cellForRowAtIndex path has incomplete type..."
Is there something I can do to fix this or is this just a beta issue?
The tableView:didSelectRowAtIndexPath: method's declaration has changed between Xcode 6 beta 6 and Xcode 6 beta 7. This method now requires non-optional parameters and returns a non-optional UITableViewCell.
So, with Xcode 6 beta 7, you have to set the following lines in your UITableViewController subclasses in order to avoid error messages:
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
...
}
instead of:
override func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {
...
}
See Apple Developper Library for more details.
I am having issues with with a TableViewController displaying a blank screen. I have just changed my 'Personalisation' screen from a ViewController to a TableViewController however when the personalisation cell is tapped and the app segues to the personalisation screen, all that is displayed is a blank screen.
Here is an image of how it should look as well as how it used to look on the right:
This is how it looks when run:
The content is set to Static and style set to Grouped.
This is the only code I have at the moment as I haven't finished transitioning the code from the old version to the new version since I just ran into this issue...
import UIKit
class PersonalisationTableViewController: UITableViewController, UIPickerViewDelegate {
#IBOutlet weak var changeButton: UIButton!
#IBOutlet weak var userNameTextField: UITextField!
let coloursArray = ["Default (Blue)", "Green", "Orange", "Purple", "Red", "Turquoise"]
#IBAction func userNameChange(sender : AnyObject) {
//Closes keyboard when user touches enter button
userNameTextField.resignFirstResponder()
globalUserName = userNameTextField.text
globalUserName = globalUserName.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceCharacterSet())
userNameTextField.placeholder = globalUserName
userNameTextField.text = ""
}
override func viewDidLoad() {
super.viewDidLoad()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView!) -> Int {
// #warning Potentially incomplete method implementation.
// Return the number of sections.
return 0
}
override func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete method implementation.
// Return the number of rows in the section.
return 0
}
/*
override func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {
let cell = tableView.dequeueReusableCellWithIdentifier("reuseIdentifier", forIndexPath: indexPath) as UITableViewCell
// Configure the cell...
return cell
}
*/
/*
// Override to support conditional editing of the table view.
override func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool {
// Return NO if you do not want the specified item to be editable.
return true
}
*/
/*
// Override to support editing the table view.
override func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) {
if editingStyle == .Delete {
// Delete the row from the data source
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
} else if editingStyle == .Insert {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
override func tableView(tableView: UITableView!, moveRowAtIndexPath fromIndexPath: NSIndexPath!, toIndexPath: NSIndexPath!) {
}
*/
/*
// Override to support conditional rearranging of the table view.
override func tableView(tableView: UITableView!, canMoveRowAtIndexPath indexPath: NSIndexPath!) -> Bool {
// Return NO if you do not want the item to be re-orderable.
return true
}
*/
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
}
I've not worked with table views much so I'm sure the issue is obvious, but I can't figure it out.
It is most likely because your numberOfSectionsInTableView and numberOfRowsInSection methods are returning 0. You have your UITableView set up in your storyboard but the two methods override that. When you have static cells in your UITableView, you should not override these two methods. They were probably left over from when you created the class as a subclass of UITableViewController.
Here is what is basically happening: Your UITableViewController hooked up to your PersonalisationTableViewController file. When your PersonalisationTableViewController sets up the sections and rows for your tableView, it is setting the sections to 0 and the rows for each section to 0.
I just tried putting the two methods into one of my apps that has static cells and I can confirm that it appears blank.
If you were programmatically creating your views, you could have done the following:
override func numberOfSectionsInTableView(tableView: UITableView!) -> Int {
// Return the number of sections.
return 2
}
override func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int {
// Return the number of rows in the section.
return 1
// Or this if you had a different number rows for each section:
if section == 0 {
return //someInt
} else if section == 1 {
return //someOtherInt
} else {
//......
}
}
EDIT: Also, I believe this is a bug with Xcode but you must override:
override func tableView(tableView: UITableView!, heightForRowAtIndexPath indexPath: NSIndexPath!) -> CGFloat {
if indexPath.section == 0 {
return someHeight
} else if indexPath.section == 1 {
return someOtherHeight
} else {
// ....
}
}
This error has a very simple fix:
Select the ViewController Scene. Now, select the inspector panel from the sidebar options. Check the “Is Initial View Controller” attribute option, save the project and build the project again.