TextLabel colour automatically changed when i Scroll UiTableView - ios

Question

I changing textlabel color on didSelectRowAt but when I scroll UITableView it also effects in other textlabel also
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath) as! TableViewCell
if (cell.LBLIntrest.textColor == (UIColor.black))
{
cell.LBLIntrest.textColor = Uicolor.blue
} else {
cell.LBLIntrest.textColor = Uicolor.black
}
}

Answer 1

First you have to create property to hold selected cell like below
/* To hold selected cell */
var selectedIndexPath :IndexPath?
After that set color of selected cell in cellForRowAt
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if let cell = tableView.dequeueReusableCell(withIdentifier: "cell") {
cell.textLabel?.text = "Row Number: \(indexPath.row)"
/* Check if cell is selected then set layout accourding to your requirements */
if indexPath == selectedIndexPath {
cell.textLabel?.textColor = .blue
} else {
cell.textLabel?.textColor = .black
}
return cell
}
return UITableViewCell()
}
After this manage when user select a cell in didSelectRowAt
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
// Toggle if user seleted same cell
if selectedIndexPath == indexPath {
if let cell = tableView.cellForRow(at: indexPath) {
/* Check and toggle selected cell color */
cell.textLabel?.textColor = cell.textLabel?.textColor == .black ? .blue : .black
}
} else {
/* set color of seleted cell */
if let cell = tableView.cellForRow(at: indexPath) {
cell.textLabel?.textColor = .blue
}
}
/* Save which cell is selected */
selectedIndexPath = indexPath
}
And last manage didDeselectRowAt
override func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
/* Remove if deselect same cell */
if selectedIndexPath == indexPath {
selectedIndexPath = nil
}
/* Change color to black */
if let cell = tableView.cellForRow(at: indexPath) {
cell.textLabel?.textColor = .black
}
}
This code is for on cell selection at one time so you have to set
tableView.allowsMultipleSelection = false
Hope this helps.

Answer 2

This should work for you.
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath) as! TableViewCell
setSelectedColor(cell: cell)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
...
...
if let selectedRows = tableView.indexPathsForSelectedRows, selectedRows.contains(indexPath) {
setSelectedColor(cell: cell)
}
return cell
}
func setSelectedColor(cell: UITableViewCell) {
if (cell.LBLIntrest.textColor == (UIColor.black)) {
cell.LBLIntrest.textColor = Uicolor.blue
} else {
cell.LBLIntrest.textColor = Uicolor.black
}
}
But, I would recommend moving that cell.LBLIntrest.textColor = Uicolor.blue to UITableViewCell under func setSelected(_ selected: Bool, animated: Bool) method
class TableViewCell: UITableViewCell {
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// label textColor logic goes here
// make use of selected
}
}