I have a tableview on each cell their scrollview. I have to set cell scrollview offset on table scroll.How we make ration of tableconentent offset with cell Please help I am newer in iOS. I m using JbParralax
func scrollViewDidScroll(_ scrollView: UIScrollView) {
let indexpath = table.indexPathsForVisibleRows
let a : Int = (indexpath?.count)! - 1
for i in 0...a {
let b = indexpath?[i]
let cell = table.cellForRow(at: b!) as? Custum
cell?.myScrollView.contentOffset.y = table.contentOffset.y
}
}
extension ViewController : UITableViewDelegate,UITableViewDataSource{
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 6
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let identifier = "Custum"
var cell: Custum! = tableView.dequeueReusableCell(withIdentifier: identifier) as? Custum
if cell == nil {
var nib:Array = Bundle.main.loadNibNamed("Custum", owner: self, options: nil)!
cell = nib[0] as? Custum
}
//cell.myScroll
cell.myImage.image = UIImage(named:banner[indexPath.row])
return cell
}
}
Related
Similar to tinder, if a user goes down, I don't want them to be able to go back upwards. How do I do this?
I tried the code below, but it keeps running an error: Index out of range.
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return userList.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "tableCell", for: indexPath) as! FeedTableViewCell
cell.collectionView.delegate = self
cell.collectionView.dataSource = self
//reloading the tableview
let artist: UserModel
artist = self.userList[indexPath.row]
cell.nameLabel.text = artist.name
cell.passionLabel.text = artist.passion
cell.collectionView.reloadData()
if indexPath.row == 1 {
userList.removeFirst()
}
return cell
}
Refer below code,
You need to store last scroll Content Offset of tableview, when user scroll down, refer scrollViewDidScroll method.
#IBOutlet weak var tableView: UITableView!
var lastContentOffsetY:CGFloat = 0.0
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.bounces = false
self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "reuse")
self.tableView.reloadData()
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 50
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "reuse")
return cell!
}
func scrollViewDidScroll(_ scrollView: UIScrollView) {
if(scrollView.contentOffset.y < self.lastContentOffsetY){
self.tableView.setContentOffset(CGPoint(x:scrollView.contentOffset.x, y: self.lastContentOffsetY), animated: false)
}else{
self.lastContentOffsetY = scrollView.contentOffset.y
}
}
I am currently building an Application which shows all the faculties that are available in my college. I have the data in a .plist file which I have read and populated in the UITableView. I am currently trying to show some details such as prefix and Name in the cell which when clicked on Expands to show more details about the faculty.
My TableViewController Code is shown below:
struct cellData {
var opened = Bool()
var Name = String()
var Prefix = String()
var sectionData = [String]()
}
class TableViewController: UITableViewController {
//MARK: - Initialize variables
var dataManager = DataManager()
private var header = [String]()
private var facultyDetails = [[String: String]]()
var tableViewData = [cellData]()
#IBOutlet var facultyTableView: UITableView!
//MARK: - view did load
override func viewDidLoad() {
super.viewDidLoad()
for data in dataManager.allSheet1s() {
let dataInCell = cellData(opened: false, Name: data.item2!,
Prefix: data.item1!, sectionData [data.item0!,
data.item2!,
data.item1!,
data.item3!,
data.item4!,
data.item5!,
data.item6!,
data.item7!,
data.item8!,
data.item9!,
data.item10!
])
tableViewData.append(dataInCell)
facultyTableView.register(UINib(nibName: "CustomCell", bundle: nil), forCellReuseIdentifier: "CustomCell")
}
}
// MARK: - Table view delegate
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return tableViewData.count
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "CustomCell") as! CustomCell
if indexPath.row == 0 {
cell.EmpID.text = tableViewData[indexPath.section].sectionData[0]
cell.Name.text = tableViewData[indexPath.section].sectionData[1]
cell.Prefix.text = tableViewData[indexPath.section].sectionData[2]
cell.SchoolName.text = tableViewData[indexPath.section].sectionData[3]
cell.BuildingName.text = tableViewData[indexPath.section].sectionData[4]
cell.FloorNo.text = tableViewData[indexPath.section].sectionData[5]
cell.CabinLocation.text = tableViewData[indexPath.section].sectionData[6]
cell.RoomNo.text = tableViewData[indexPath.section].sectionData[7]
cell.CabinNo.text = tableViewData[indexPath.section].sectionData[8]
cell.IntercomNumber.text = tableViewData[indexPath.section].sectionData[9]
cell.Email.text = tableViewData[indexPath.section].sectionData[10]
return cell
}
return cell
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if tableViewData[indexPath.section].opened == true {
tableViewData[indexPath.section].opened = false
let sections = IndexSet.init(integer: indexPath.section)
tableView.reloadSections(sections, with: .right)
}
else {
tableViewData[indexPath.section].opened = true
let sections = IndexSet.init(integer: indexPath.section)
tableView.reloadSections(sections, with: .left)
}
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
if tableViewData[indexPath.section].opened == true {
return 400
}
else {
return 70
}
}
}
Simulator
Physical Device
Right now you can see in the simulator that it works perfectly fine. But when I load it up in the physical device the height of each cell in the rows are clipping through the other cells below it.
Modify your cell for row code by adding cell.clipsToBounds = true
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "CustomCell") as! CustomCell
cell.clipsToBounds = true
if indexPath.row == 0 {
cell.EmpID.text = tableViewData[indexPath.section].sectionData[0]
cell.Name.text = tableViewData[indexPath.section].sectionData[1]
cell.Prefix.text = tableViewData[indexPath.section].sectionData[2]
cell.SchoolName.text = tableViewData[indexPath.section].sectionData[3]
cell.BuildingName.text = tableViewData[indexPath.section].sectionData[4]
cell.FloorNo.text = tableViewData[indexPath.section].sectionData[5]
cell.CabinLocation.text = tableViewData[indexPath.section].sectionData[6]
cell.RoomNo.text = tableViewData[indexPath.section].sectionData[7]
cell.CabinNo.text = tableViewData[indexPath.section].sectionData[8]
cell.IntercomNumber.text = tableViewData[indexPath.section].sectionData[9]
cell.Email.text = tableViewData[indexPath.section].sectionData[10]
return cell
}
return cell
}
And override a method
override func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return 70
}
How to show button Highlight colour,,and the colour is red
extension LeaveDetailVC: cellIndexCall{
func selectBtnIndex(sender: UIButton) {
let buttonPosition:CGPoint = sender.convert(.zero, to:leaveDetailTableView)
var indexPath = leaveDetailTableView.indexPathForRow(at: buttonPosition)
self.indexPath = indexPath!
print("\(String(describing: indexPath?.row))") /* index path of button
self.menuClickIndex = (indexPath?.row)!
}
}
And my Button is cover the tableViewCell.
And I also create a button delegate in cell class and call in viewController through extension.
I just want to highlight button and that is over cell.
override func tableView(_ tableView: UITableView, shouldHighlightRowAt
indexPath: IndexPath) -> Bool {
return true
}
override func tableView(_ tableView: UITableView, didHighlightRowAt
indexPath:
IndexPath) {
let cell = tableView.cellForRow(at: indexPath)
cell?.contentView.backgroundColor = UIColor.orange
cell?.backgroundColor = UIColor.orange
}
override func tableView(_ tableView: UITableView, didUnhighlightRowAt
indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath)
cell?.contentView.backgroundColor = UIColor.black
cell?.backgroundColor = UIColor.black
}
In your viewController
class LeaveDetailVC: ViewController {
var selectedRows: [IndexPath] = [] // i assume multiple select button
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "YOUR_CELL") as! YOUR_CELL_CLASS
cell.isHighlight = selectedRows.indices.contains(indexPath) // Determine if cell was selected or not
}
}
extension LeaveDetailVC: cellIndexCall {
func selectBtnIndex(sender: UIButton) {
let buttonPosition:CGPoint = sender.convert(.zero, to:leaveDetailTableView)
var indexPath = leaveDetailTableView.indexPathForRow(at: buttonPosition)
if selectedRows.indices.contains(indexPath) {
if let index = selectedRows.index(of: indexPath) {
self.selectedRows.remove(at: index) // remove selected indexpath
}
} else {
self.selectedRows.append(indexPath) // add selected indexpath
}
}
}
In your cell class
var isHighlight: Bool = false
override func layoutSubviews() {
super.layoutSubviews()
// TODO : Set your button color based on isHighlight flag
}
I am new in IOS and i am using swift.I want to change the text of label when height of cell expand.Please tell me how to change text when height expand of cell in swift.
import UIKit
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource
{
var selectedIndex = -1
var height = 54
// Data model: These strings will be the data for the table view cells
let animals: [String] = ["Horse", "Cow", "Camel", "Sheep", "Goat"]
// cell reuse id (cells that scroll out of view can be reused)
let cellReuseIdentifier = "cell"
// don't forget to hook this up from the storyboard
#IBOutlet var tableView: UITableView!
override func viewDidLoad()
{
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
}
// number of rows in table view
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return 2
}
// create a cell for each table view row
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
// create a new cell if needed or reuse an old one
let cell:Cell1 = self.tableView.dequeueReusableCell(withIdentifier: "cell") as! Cell1!
cell.textLabel?.text = "-"
return cell
}
// method to run when table view cell is tapped
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
let cell:Cell1 = self.tableView.dequeueReusableCell(withIdentifier: "cell") as! Cell1!
if(selectedIndex == indexPath.row)
{
height = 216
cell.textLabel?.text = "+"
}else{
height = 54
cell.textLabel?.text = "/"
}
return CGFloat(height)
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
{
print("You tapped cell number \(indexPath.row).")
if(selectedIndex == indexPath.row)
{
selectedIndex = -1
}
else
{
selectedIndex = indexPath.row
}
}
}
In your code you are trying to dequeue the cell again in your heightForRowAt function, I think that's your issue.
so try replace your heightForRowAt function with the below code.
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
let cell = tableView.cellForRow(at: indexPath)
if(selectedIndex == indexPath.row)
{
height = 216
cell.textLabel?.text = "+"
}else{
height = 54
cell.textLabel?.text = "/"
}
return CGFloat(height)
}
below code supposed to call usernames from an array and user able to tap on the desired username. call to that array is a success and I can see the usernames but won't able to tap into it. and it don't even print "didSelectRowAt". appreciate your help. thanks.
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "cellIdentifier", for: indexPath) as! MentionUserCell
cell.username!.text = autoComplete[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return autoComplete.count
}
func numberOfSections(in tableView: UITableView) -> Int
{
return 1
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
{
let selectedCell: MentionUserCell = tableView.cellForRow(at: indexPath)! as! MentionUserCell
let selectedWord: String = selectedCell.username!.text! + " "
print("didSelectRowAt")
var string: NSString = NSString(string: self.commentTextView.text!)
string = string.replacingCharacters(in: otoCadang.sharedInstance.foundRange, with: selectedWord) as NSString
// change text field value
commentTextView.text = string as? String
// change cursor position
let positionOriginal = commentTextView.beginningOfDocument
if let cursorLocation: UITextPosition = self.commentTextView.position(from: positionOriginal, offset: otoCadang.sharedInstance.foundRange.location + selectedWord.characters.count)
{
self.commentTextView.selectedTextRange = self.commentTextView.textRange(from: cursorLocation, to: cursorLocation)
}
// remove suggestion
self.autoComplete.removeAll()
self.tableView.reloadData()
tableView.isHidden = true
}
Check List
tableview delegate is set properly
tableview selection mode == No Selection, then change to single selection
function name is correct func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
are you using any tap gesture on this view? remove it.
If you are editing UITextView will can't call to `didselectRowAt. Try to get the Your MentionUserCell, IndexPath in UITextView's methods and handle there. Example:
func textViewDidChange(_ textView: UITextView) {
var parentView = textView as UIView
while !(parentView is UITableViewCell) {
parentView = parentView.superview!
}
if let cell: MentionUserCell = parentView as? MentionUserCell {
if let indexPath = self.tableView.indexPath(for: cell) {
let yourIndexPath = indexPath
}
}
//your code
}
Hope it will help you.
When are using two or more cells the didSelectRow method is not working Well. You can use a button in cell.
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cellIdentifierName", for: indexPath) as! MentionUserCell
cell.username!.text = autoComplete[indexPath.row]
let button = cell.viewWithTag(101) as! UIButton
button.cellclick.addTarget(self, action: #selector(functionName(sender:)), for: .touchDown)
return cell
}
Now you get the indexPath:-
func functionName(sender:UIButton) {
let buttonPosition:CGPoint = sender.convert(CGPoint.zero, to:self.tableview)
let indexPath = self.tableview.indexPathForRow(at: buttonPosition)
print(indexPath.row)
}