I have a tableView on mainStoryboard with two custom cells.
I would like to set two more cells at different row. I was trying to find the answer but could not find out.
I have image and code added below.
class HomeViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, MFMailComposeViewControllerDelegate {
#IBOutlet var tblStoryList: UITableView!
var array = PLIST.shared.mainArray
override func viewDidLoad() {
super.viewDidLoad()
//spacing between header and cell
self.tblStoryList.contentInset = UIEdgeInsetsMake(-20, 0, 0, 0)
//delete separator of UITableView
tblStoryList.separatorStyle = .none
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.array.count + 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.row == 0 {
let cell = tableView.dequeueReusableCell(withIdentifier: "HeaderCell", for: indexPath) as! HeaderCell
cell.headerTitle.text = "First Stage"
return cell
}
let cell = tableView.dequeueReusableCell(withIdentifier: "StoryTableviewCell", for: indexPath) as! StoryTableviewCell
//making plist file
let dict = self.array[indexPath.row - 1]
let title = dict["title"] as! String
let imageName = dict["image"] as! String
let temp = dict["phrases"] as! [String:Any]
let arr = temp["array"] as! [[String:Any]]
let detail = "progress \(arr.count)/\(arr.count)"
//property to plist file
cell.imgIcon.image = UIImage.init(named: imageName)
cell.lblTitle.text = title
cell.lblSubtitle.text = detail
cell.selectionStyle = UITableViewCellSelectionStyle.none
return cell
}
Update your conditions for HeaderCell and use ternary operator to set headerTitle
if indexPath.row == 0 || indexPath.row == 3 || indexPath.row == 5 {
let cell = tableView.dequeueReusableCell(withIdentifier: "HeaderCell", for: indexPath) as! HeaderCell
cell.headerTitle.text = indexPath.row == 0 ? "First Stage" : indexPath.row == 3 ? "Second Stage" : "Third Stage"
return cell
}
Instead of using Stages as a row, use them as a section header. You can put custom view in header section.
Main Idea :
section-ize your row along with stages, put the cell's data in an array and add them in a dictionary with the section value as their key. To visualise your case the dictionary will look like following.
#{
#"First Stage" : #[object_for_basic_grammar_1,
object_for_basic_grammar_2
],
#"Second Stage": #[object_for_basic_grammar3],
...
...
}
And Another array is needed to store the order of the dictionary keys, which will visualise to following
#[#"First Stage", #"Second Stage"
]
Now step by step follow the list:
Use numberOfSections(in:) for providing that how many stages here. return the count of the array which stores the sections.
Use tableView(_:numberOfRowsInSection:) for providing the number of rows in that section. get the section string object from the section list array declared later and search for the rows in the dictionary. You'll find a array of grammars here, return the count of that array.
Use tableView(_:cellForRowAt:) for providing the particular cell for that row as you've done for the grammar's cell.
Use tableView(_:heightForHeaderInSection:) for providing the height for the section header.
Now implement tableView(_:viewForHeaderInSection:) and return the view for specifying the section view, which in your case is the stages.
hope it helps you, best of luck.
Related
Is there any way for a tableview to read as a list for accessibility while having the whole focus on the tableview?
For example: I have a list like
Art
Ball
Car
Dog
So I would want the accessibility reader to read as "Item 1 of 4 Art, Item 2 of 4 Ball, .... etc"
Yes, you can but you would have to implement that manually.
You can create some kind of model for your cell which you use to configure it.
You would need to pass the total row count of your table view to that configuration for each cell.
struct CellConfig {
let title: String
private let count: Int
init(title: String, count: Int) {
self.title = title
self.count = count
}
}
You could than actually extend the functionality to let the CellConfig return the correct accessibility label by passing the current IndexPath like so:
struct CellConfig {
...
func axLabel(for indexPath: IndexPath) -> String {
let currentElement = indexPath.row + 1
return "Item \(currentElement) of \(count). \(title)."
}
}
So when returning your cell from your delegate method:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard indexPath.row < items.count else { return UITableViewCell() }
let item = items[indexPath.row] // The array here holds all the configs of every cell.
let cell = tableView.dequeueReusableCell(withIdentifier: "MyCell", for: indexPath) as? UITabelViewCell
cell?.titleLabel.text = item.title
cell?.accessibilityLabel = item.axLabel(for: indexPath)
return cell ?? UITableViewCell()
}
I am trying to access an array's indexPath inside a function to update this array's data but I don't know how to pass the indexPath as a parameter (espacially what to pass when calling) to the function or if this is even the solution.
I included cellForRowAt to illustrate how this function access indexPath.
var cryptosArray: [Cryptos] = []
extension WalletTableViewController: UITableViewDelegate, UITableViewDataSource, CryptoCellDelegate {
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let crypto = cryptosArray[indexPath.row]
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! WalletTableViewCell
cell.setCrypto(crypto: crypto)
cell.delegate = self
cell.amountTextField.delegate = self
return cell
}
func cellAmountEntered(_ walletTableViewCell: WalletTableViewCell) {
if walletTableViewCell.amountTextField.text == "" {
return
}
let str = walletTableViewCell.amountTextField.text
let crypto = cryptosArray[indexPath.row] //<---- How to do that?
crypto.amount = walletTableViewCell.amountTextField.text
//Then update array's amount value at correct index
walletTableViewCell.amountTextField.text = ""
}
}
Instead of hacking something, simply ask the tableView to tell you the indexPath of the given cell:
// use indexPath(for:) on tableView
let indexPath = tableView.indexPath(for: walletTableViewCell)
// then you can simply use it
let crypto = cryptosArray[indexPath.row]
UITableView.indexPath(for:) documentation says:
Returns an index path representing the row and section of a given table-view cell.
And this is exactly what you want, you don't want to hack the indexPath to the cell. indexPath should be taken care of by the tableView, not the cell. Ideally, cell should be completely oblivious of its indexPath.
Always try to use the standard way to solve your problems. In general, when you are trying to solve something, I would recommend you to first look at the documentation of the UITableView, there are many useful methods there.
if you want to get index path.row when user clicked on cell , you should get index path.row when user clicked and then use this to your func
for ex :
var indexrow : int = 0
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
// table cell clicked
indexrow = indexPath.row
}
func cellAmountEntered(_ walletTableViewCell: WalletTableViewCell) {
if walletTableViewCell.amountTextField.text == "" {
return
}
let str = walletTableViewCell.amountTextField.text
let crypto = cryptosArray[indexrow]
crypto.amount = walletTableViewCell.amountTextField.text
//Then update array's amount value at correct index
walletTableViewCell.amountTextField.text = ""
}
I am fetching previously selected categorylist from the server. say for an example.cateogrylist i fetched from the server was in following formate
categoryid : 2,6,12,17
now what i need to do is want to enable checkmark in my tableview based on this categorylist,for that purpose i converted this list into an [Int] array like this :
func get_numbers(stringtext:String) -> [Int] {
let StringRecordedArr = stringtext.components(separatedBy: ",")
return StringRecordedArr.map { Int($0)!}
}
in viewDidLoad() :
selectedCells = self.get_numbers(stringtext: UpdateMedicalReportDetailsViewController.catId)
print(myselection)
while printing it's giving me results like this : [12,17,6,8,10]
i want to enable checkimage based on this array.I tried some code while printing its giving me the right result like whatever the categories i selected at the time of posting ,i am able to fetch it but failed to place back this selection in tableview.Requirement : while i open this page it should show me the selection based on the categorylist i fetched from the server.
var selectedCells : [Int] = []
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell1 = table.dequeueReusableCell(withIdentifier: "mycell") as! catcell
cell1.mytext.text = categoriesName[indexPath.row]
if UpdateMedicalReportDetailsViewController.flag == 1
{
selectedCells = self.get_numbers(stringtext: UpdateMedicalReportDetailsViewController.catId)
cell1.checkimage.image = another
print(selectedCells)
}
else
{
selectedCells = []
cell1.checkimage.image = myimage
}
return cell1
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let cell = table.cellForRow(at: indexPath) as! catcell
cell.checkimage.image = myimage
if cell.isSelected == true
{
self.selectedCells.append(indexPath.row)
cell.checkimage.image = another
}
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
let cell = table.cellForRow(at: indexPath) as! catcell
if cell.isSelected == false
{
self.selectedCells.remove(at: self.selectedCells.index(of: indexPath.row)!)
cell.checkimage.image = myimage
}
}
output :
This is a very common use case in most apps. I'm assuming you have an array of all categories, and then an array of selected categories. What you need to do is in cellForRowAtIndexPath, check to see if the current index path row's corresponding category in the "all categories" array is also present in the "selected categories" array. You can do this by comparing id's etc.
If you have a match, then you know that the cell needs to be selected/checked. A clean way to do this is give your cell subclass a custom load method and you can pass a flag for selected/checked.
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = table.dequeueReusableCell(withIdentifier: "mycell") as! catcell
let category = self.categories[indexPath.row] // Let's say category is a string "hello"
Bool selected = self.selectedCategories.contains(category)
cell.load(category, selected)
return cell
}
So with the code above, let's say that categories is just an array of category strings like hello, world, and stackoverflow. We check to see if the selectedCategories array contains the current cell/row's category word.
Let's say that the cell we're setting up has a category of hello, and selectedCategories does contain it. That means the selected bool gets set to true.
We then pass the category and selected values into the cell subclass' load method, and inside that load method you can set the cell's title text to the category and you can check if selected is true or false and if it's true you can display the checked box UI.
This question follows up from this: Use UICollectionViews to create dynamic and multiple features.
I am able to create a static cell which displays the name and image of the recipe similar like this app:
Where I am stuck is creating a dynamic row which changes based on the amount of data inside i.e. utensils or nutritional values like the image below:
I know how to display rows of data on tableView normally. But not sure how to embed it into a section inside a tableView. I attempted to add multiple prototype cells and assign them to a subclass of UITableViewCell's. Then I try to use if statements in my cellForRow but this isn't soling my issue.
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.row == 0 {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! FirstCell
//set the data here
cell.recipeTitle.text = recipe.name
cell.imageView.image = UIImage(named: "url")
return cell
}
else if indexPath.row == 1 {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell2", for: indexPath) as! SecondCell
//set the data here
return cell
}
else {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell3", for: indexPath) as! ThirdCell
//set the data here
return cell
}
}
I have also looked at this demonstration: https://medium.com/ios-os-x-development/ios-how-to-build-a-table-view-with-multiple-cell-types-2df91a206429, which is near to what I want to achieve but I have found it quite difficult to adapt to it.
If someone could direct me on how best to approach this or a good example then I would really appreciate it.
First you can't have static cells and dynamic cells in the same tableView. So how do you work around that? Define each of the static cells in the sections they belong in as well as the dynamic cells in the sections they belong to. That, however doesn't look like what you are trying to do. You just want multiple sections in the same tableView, each section with a different list of data
To do this you will need the number of sections so use the tableView(_:numberOfSections:) function.
override func numberOfSections(in tableView: UITableView) -> Int {
return 3
}
You can then(and probably should) give each of those sections a title by initializing an array with the titles in your tableViewController(assuming thats what you are using. It could also just be a tableView).
let headerTitles = ["Nutritional Values", "Utensils", "Ingredients"]
Then use the tableView(_:titleForHeaderInSection:)
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
if section < headerTitles.count {
return headerTitles[section]
}
return nil
}
Now you can start defining your rows by the sections.
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell: UITableViewCell
if indexPath.section == 0 {
//Setup up the first row
if indexPath.row == 0 {
//I'm not sure where or how you defined First/SecondCell but this may not work depending on those two questions.
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! FirstCell
return cell
} else if indexPath.row == 1 {
let cell = Bundle.main.loadNibNamed("StaticCell", owner: self, options: nil)?.first as! StaticCell
return cell
}
} else if indexPath.section == 1 {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell1", for: indexPath) as! SecondCell
//setup cell1 n your storyboard to have a label with a tag # of 12(or whatever number you want to use)
//you also want an array with your utensil data accessible here
let label = cell.viewWithTag(12) as! UILabel
label.text = utensilNames[indexPath.row]
return cell
} else if indexPath.section == 2 {
let cellIngredients = tableView.dequeueReusableCell(withIdentifier: "Ingredients", for: indexPath)
tableView.deselectRow(at: indexPath, animated: true)
return cellIngreidents
}
cell = tableView.dequeueReusableCell(withIdentifier: "cell")!
return cell
}
The point here is to use sections then rows to distribute your data.
Just to clarify Section 0 Row 0 - N would be where you're static rows are setup. I found it best to use XIB files subclassing TableViewCell.
Hope this helps.
EDIT So the way I'm looking at the "static" cells is in the first section the xib is the only put exactly where you tell it to be placed. In the example above the first section in the second cell is the
I have implemented a tableView using PLIST to set properties.
I would like to add three sections at specific row. (row 12, row24, row 35)
I have tried with following code but it will be too much code and not working well.
Images and code are added below.
import UIKit
class HomeViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet var tblStoryList: UITableView!
var array = PLIST.shared.mainArray
var array = PLIST.shared.mainArray
let sections: [String] = ["First stage","Second Stage","Third Stage"]
let s1Data : [String] = ["Row1","Row2","Row3"]
let s2Data : [String] = ["Row4","Row5","Row6"]
let s3Data : [String] = ["Row7","Row8","Row9"]
var sectionData: [Int: [String]] = [:]
override func viewDidLoad() {
super.viewDidLoad()
sectionData = [0: s1Data, 1: s2Data, 2: s3Data]
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return (sectionData[section]?.count)!
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return sections[section]
}
func numberOfSections(in tableView: UITableView) -> Int {
return 3
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) ->
UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "StoryTableviewCell", for: indexPath) as! StoryTableviewCell
//making plist file
let dict = self.array[indexPath.row]
let title = dict["title"] as! String
let imageName = dict["image"] as! String
let temp = dict["phrases"] as! [String:Any]
let arr = temp["array"] as! [[String:Any]]
let detail = "progress \(arr.count)/\(arr.count)"
//property to plist file
cell.imgIcon.image = UIImage.init(named: imageName)
cell.lblTitle.text = title
cell.lblSubtitle.text = detail
cell.selectionStyle = UITableViewCellSelectionStyle.none
return cell
}
The indexPath.row you are getting in the tableView's cellForRowAt is relative to the section. You cannot use it directly as the index of your main array (which has all the rows).
You will need to perform a simple calculation to convert the indexPath.row to an index of that array (by offsetting the row with the total item count of previous sections) :
let index = [0,12,36][indexPath.section] + indexPath.row
let dict = array[index]
The same thing applies to the response you give to numberOfRowsInSection:
return [12,24,35][section]
I find it a bit odd that the data structure (PLIST) would be so rigid that it always contains exactly those number of entries and will never change. I would suggest a more generalized approach if only to avoid spreading hard coded numbers (e.g. 12,24,35,36) all over the place.
for example:
// declare section attributes in your class
let sectionTitles = ["First stage","Second Stage","Third Stage"]
let sectionSizes = [12,24,35] // central definition, easier to maintain (or adjust to the data)
let sectionOffsets = sectionSizes.reduce([0]){$0 + [$0.last!+$1] }
// and use them to respond to the table view delegate ...
let index = sectionOffsets[indexPath.section] + indexPath.row
let dict = array[index]
// ...
return sectionSizes[section] // numberOfRowsInSection
Using this approach, you shouldn't need to create sectionData (unless you're using it for other purposes elsewhere).
BTW, in your sample code, the sectionData content is hard coded with data that is not consistent with the expected section sizes so it would not work even with a correct index calculation.
you can try to use switch case in tableView:cellForRowAtIndexPath: