I'm trying to complete a UITableView and i'm receiving an error on the final part of the code for one line.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as UITableViewCell
//ERROR IS IN THE LINE ABOVE ("anyobject" is not convertible to "UItableViewCell"
if (indexPath.section == 1) {
let (unit, availability) = myUnits[indexPath.row]
cell.textLabel?.text = unit
cell.detailTextLabel?.text = availability
} else {
let (assessment, mark) = myAssessments[indexPath.row]
cell.textLabel?.text = assessment
cell.detailTextLabel?.text = mark
}
return cell
}
You have to tell the compiler that your cell is of the UITableViewCell class, which means downcasting using the ! mark:
let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! UITableViewCell
Related
i have a problem with the following code that manage two uitableview in a viewcontroller. When insert the data in a modal controller in the 'directionTableView' give a follow error:
Thread 1: signal SIGABRT
'Could not cast value of type 'UITableViewCell' (0x1059e7560) to 'FoodTime.DirectionRecipeTableViewCell' (0x101388bf0). 2018-05-23 21:50:12.160281+0200 FoodTime[4577:360265] Could not cast value of type 'UITableViewCell' (0x1059e7560) to 'FoodTime.DirectionRecipeTableViewCell' (0x101388bf0).'
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
var cell = UITableViewCell()
if (tableView == self.ingredientTableView)
{
let cell = tableView.dequeueReusableCell(withIdentifier: "newIngredientCell", for: indexPath) as! IngredientRecipeTableViewCell
let ingredientCell = ingredients[indexPath.row]
cell.textLabel?.text = ingredientCell.titleIngredientRecipe
cell.detailTextLabel?.text = ingredientCell.subtitleIngredientRecipe
}
else if (tableView == self.directionTableView)
{
//Thread 1: signal SIGABRT on next line
let cell = tableView.dequeueReusableCell(withIdentifier: "newDirectionCell", for: indexPath) as! DirectionRecipeTableViewCell
let directionCell = directions[indexPath.row]
cell.textLabel?.text = directionCell.directionSection
cell.detailTextLabel?.text = directionCell.directionText
}
return cell
}
Away from the problem the first line
var cell = UITableViewCell()
is actually what is being returned cells inside the if statements are local variables
So try this
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
if (tableView == self.ingredientTableView)
{
let cell = tableView.dequeueReusableCell(withIdentifier: "newIngredientCell", for: indexPath) as! IngredientRecipeTableViewCell
let ingredientCell = ingredients[indexPath.row]
cell.textLabel?.text = ingredientCell.titleIngredientRecipe
cell.detailTextLabel?.text = ingredientCell.subtitleIngredientRecipe
return cell
}
else
{
let cell = tableView.dequeueReusableCell(withIdentifier: "newDirectionCell", for: indexPath) as! DirectionRecipeTableViewCell //Thread 1: signal SIGABRT
let directionCell = directions[indexPath.row]
cell.textLabel?.text = directionCell.directionSection
cell.detailTextLabel?.text = directionCell.directionText
return cell
}
}
Also make sure that you register every tableview with the corresponding cell
error i so easy
you declare this
var cell = UITableViewCell()
then you create new one
let cell = tableView.dequeueReusableCell(withIdentifier: "newIngredientCell", for: indexPath) as! IngredientRecipeTableViewCell
just remove let
Also
In interface builder make sure that cell with newDirectionCell is DirectionRecipeTableViewCell and same for another cell
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
var cell = UITableViewCell()
if (tableView == self.ingredientTableView)
{
cell = tableView.dequeueReusableCell(withIdentifier: "newIngredientCell", for: indexPath) as! IngredientRecipeTableViewCell
let ingredientCell = ingredients[indexPath.row]
cell.textLabel?.text = ingredientCell.titleIngredientRecipe
cell.detailTextLabel?.text = ingredientCell.subtitleIngredientRecipe
}
else if (tableView == self.directionTableView)
{
//Thread 1: signal SIGABRT on next line
cell = tableView.dequeueReusableCell(withIdentifier: "newDirectionCell", for: indexPath) as! DirectionRecipeTableViewCell
let directionCell = directions[indexPath.row]
cell.textLabel?.text = directionCell.directionSection
cell.detailTextLabel?.text = directionCell.directionText
}
return cell
}
How can I return a TableViewcell in cellForRowAtIndexPath delegate method , if I m using multiple UITableView in a Single ViewController, One TableView has Custom UITableViewCell and the other has default UITableViewCell . My problem is I m not able to cast the UITableViewCell to Custom TableViewCell type .
Code used as follows ,
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell:UITableViewCell?
if tableView == self.tvCity {
var cell:UITableViewCell?
cell = tableView.dequeueReusableCellWithIdentifier(cityCellIdentifier, forIndexPath: indexPath) as UITableViewCell
let row = indexPath.row
cell!.textLabel?.text = self.cityList[row].cityEn
}
if tableView == self.tvBranchByCity {
var cell:BranchNearMeTableViewCell?
cell = (tableView.dequeueReusableCellWithIdentifier(branchCellIdentifier, forIndexPath: indexPath) as! BranchNearMeTableViewCell)
let row = indexPath.row
cell.branchName = self.branchList[row].name// here cell.branchName is not accessible.
}
return cell!
}
Please advise . Thanks in advance.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
if tableView == self.tvCity {
var cell:UITableViewCell?
cell = tableView.dequeueReusableCellWithIdentifier(cityCellIdentifier, forIndexPath: indexPath) as UITableViewCell
let row = indexPath.row
cell!.textLabel?.text = self.cityList[row].cityEn
return cell!
}
if tableView == self.tvBranchByCity {
var cell:BranchNearMeTableViewCell?
cell = (tableView.dequeueReusableCellWithIdentifier(branchCellIdentifier, forIndexPath: indexPath) as! BranchNearMeTableViewCell)
let row = indexPath.row
cell.branchName = self.branchList[row].name as! String // here cell.branchName is not accessible.
return cell!
}
}
Differentiate tables with tag
see example :
if tableView.tag == 2000
{
identifier = "First Table"
let cell = tableView.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath)
return cell
}
else
{
identifier = "Second Table"
let cell = tableView.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath)
return cell
}
I'm running into some problems today in my application. I'm using a UITableView to present different cells some contain a specific button, some display a game your currently in, some are just for spacing between cells.
However im running into some problems when I do tableView.reloadData().
When I click on 'new game' a new game cell should be added, but instead of that the last cells are moved down (like expected, because something comes in between), however the upper cells that should change, they don't. I expect this to be because of reusing (or "caching"). Maybe someone can help me out on how to fix this.
Here is an image of what is happening explanation
Now I have different cells, all with their own Identifiers for example: "Emptycell", "Gamecell", "startnewgameBtnCell". I do this because I create each cell in storybuilder.
here is my code for cellForRowAtIndexPath
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = UITableViewCell()
let identifier = cell_identifiers[indexPath.row][0] as! String
if ((cell_identifiers[indexPath.row][1] as! String) == "MYTURN" ) {
var cell = tableView.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath) as! GameViewCell
let match = self.myTurnMatches[indexPath.row - 4]
setupGameViewCellObject(match)
}
if ((cell_identifiers[indexPath.row][1] as! String) == "NOT" ) {
var cell = tableView.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath) as! FirstMenuTableViewCell
}
return cell
In this code I check if its a gamecell or not, emptycells or cells that contain a label or button are all FirstMenuTableViewCell. Only GameCell have their own class GameViewCell.
I have also double checked to see if my identifiers are build up correctly and they are.
Maybe someone can explain me exactly whats happening and what might be the correct approach to solve the situation I'm in, I think I may not fully understand how to use UITableViewCell with custom cells.
Thanks for reading
You create new variables called cell in the if statements. You are hiding the outer cell.
Use one cell variable.
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell: UITableViewCell
let identifier = cell_identifiers[indexPath.row][0] as! String
if ((cell_identifiers[indexPath.row][1] as! String) == "MYTURN" ) {
cell = tableView.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath) as! GameViewCell
let match = self.myTurnMatches[indexPath.row - 4]
setupGameViewCellObject(match)
}
if ((cell_identifiers[indexPath.row][1] as! String) == "NOT" ) {
cell = tableView.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath) as! FirstMenuTableViewCell
}
return cell
}
Try update your code:
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = UITableViewCell()
let identifier = cell_identifiers[indexPath.row][0] as! String
if ((cell_identifiers[indexPath.row][1] as! String) == "MYTURN" ) {
var cell = tableView.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath) as! GameViewCell
let match = self.myTurnMatches[indexPath.row - 4]
setupGameViewCellObject(match)
return cell
}
if ((cell_identifiers[indexPath.row][1] as! String) == "NOT" ) {
var cell = tableView.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath) as! FirstMenuTableViewCell
return cell
}
return cell
if me, i coded:
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let identifier = cell_identifiers[indexPath.row][0] as! String
if ((cell_identifiers[indexPath.row][1] as! String) == "MYTURN" ) {
let cell = tableView.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath) as! GameViewCell
let match = self.myTurnMatches[indexPath.row - 4]
setupGameViewCellObject(match)
return cell
}else { // if you sure just have 2 cell type
let cell = tableView.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath) as! FirstMenuTableViewCell
return cell
}
}
But i think you should use section in tableview,it is better. So, you have 3 section, and 2 headerofsection in there. the first section have 1 row, the second have self.myTurnMatches.count row.... :
override func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
if section == 0 || section == 1{
return 44
}else{
return 0
}
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
if indexPath.section == 1{
let cell = tableView.dequeueReusableCellWithIdentifier("GameViewCell 's identifier", forIndexPath: indexPath) as! GameViewCell
let match = self.myTurnMatches[indexPath.row - 4]
setupGameViewCellObject(match)
return cell
}else{
let cell = tableView.dequeueReusableCellWithIdentifier("FirstMenuTableViewCell 's identifier", forIndexPath: indexPath) as! FirstMenuTableViewCell
return cell
}
}
I'm struggling with grouped dynamic table view. I want to have 2 groups. Basically, in first group I want to have customers data and on second one orders. First group will have always same number of rows. Any what is my problem - I want to put text field into each row of first section (with different placeholder) but when I run application, textfield is only in last row. Does anybody know what Im doing wrong? Thank you
Declaration of my properties
var textField = UITextField()
var udaje = ["Jméno zákazníka","Kontaktní osoba","Telefon","Email","Fakturační adresa","Dodací adresa","IČO/DIČ"]
TableViewController.swift:
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell = UITableViewCell()
if (indexPath.section == 0) {
let cell = tableView.dequeueReusableCellWithIdentifier("udajeCell", forIndexPath: indexPath) as! UITableViewCell
self.textField.frame = cell.contentView.frame
self.textField.placeholder = self.udaje[indexPath.row]
cell.contentView.addSubview(textField)
} else if (indexPath.section == 1) {
let cell = tableView.dequeueReusableCellWithIdentifier("pilyCell", forIndexPath: indexPath) as! UITableViewCell
cell.textLabel?.text = "Přidat pilu"
cell.detailTextLabel?.text = "+"
}
return cell
}
try this way code:
your problem is use use the self.textField. not self.textField use cell.textField.
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell = UITableViewCell()
if (indexPath.section == 0) {
let cell = tableView.dequeueReusableCellWithIdentifier("udajeCell", forIndexPath: indexPath) as! UITableViewCell
cell.textField.frame = cell.contentView.frame
cell.textField.placeholder = self.udaje[indexPath.row]
cell.contentView.addSubview(textField)
} else if (indexPath.section == 1) {
let cell = tableView.dequeueReusableCellWithIdentifier("pilyCell", forIndexPath: indexPath) as! UITableViewCell
cell.textLabel?.text = "Přidat pilu"
cell.detailTextLabel?.text = "+"
}
return cell
}
I want to put 2 custom cell in TableView, but I have a small problem with it. I tried to find answer in Google and StackOverflow, but answers can't help me.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
if indexPath.row == 0{
var cell: CustomCell = tableView.dequeueReusableCellWithIdentifier("FistCustomTableViewCell", forIndexPath: indexPath) as CustomCell
//set cell2
}
if indexPath.row >= 1{
var cell: CustomCell = tableView.dequeueReusableCellWithIdentifier("CustomTableViewCell", forIndexPath: indexPath) as CustomCell
let cons = aArray[indexPath.row - 1]
// set cell2
}
return cell // (!) Use of unresolved identifier "cell"
}
You need to draw the cell declaration outside:
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell: CustomCell!
if indexPath.row == 0{
cell = tableView.dequeueReusableCellWithIdentifier("FistCustomTableViewCell", forIndexPath: indexPath) as CustomCell
//set cell2
}
if indexPath.row >= 1{
cell = tableView.dequeueReusableCellWithIdentifier("CustomTableViewCell", forIndexPath: indexPath) as CustomCell
let cons = aArray[indexPath.row - 1]
// set cell2
}
return cell
}
You have to declare the cell out of the if statement.