Changing color of single UITableView Cell in iOS Swift

Question

I want to be able to change the color of a single UITableView cell. In my tableView(editActionsForRowAtIndexPath) I can swipe the cell and select a button to change the background color but when I scroll the cell off screen it changes back. How do I get it to retain the color? Thanks

Answer 1

Assuming you have only one section in your tableView with many rows, you need to do this in your tableView:cellForRowAtIndexPath: method:

if (indexPath.row == coloredCellIndex) {
     cell.backgroundColor = UIColor.RedColor()
} else {
     cell.backgroundColor = UIColor.WhiteColor()
}

You need to set the variable coloredCellIndex anywhere outside of this function, for example in viewDidLoad

Answer 2

Sorry, I can only write my answer in Objective-C. But I hope you can get my point.

If you are using a custom prototype cell, then you can add a property to your custom table view cell class, and store the current color you want for that cell, and then later in reload that color.

Sample code:

In CustomTableViewCell.h

@interface CustomTableViewCell : UITableViewCell

@property (nonatomic) UIColor *cellColor;

- (void)reloadBackgroundColor

@end

In CustomTableViewCell.m

- (void)reloadBackgroundColor
{
    self.backgroundColor = cellColor; //this is just a sample.
}

And then under you can just set that color everytime the cell is reloaded.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

CustomTableViewCell *tableCell = (CustomTableViewCell *)[tableView dequeueReusableCellWithIdentifier:@"CustomTableCellIdentifier"];

[tableCell reloadBackgroundColor];

return tableCell;

Now, everytime you scroll the table, the color you want to set to that cell will be loaded.

If you are not using a custom prototype cell, then I suggest that you store the color you want for each cell in a Dictionary, with its index as the key. Then you just assign it again to that cell every time it is reloaded.

I hope this helps you. :)

Answer 3

self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "CustomTableViewCell")

cell.backgroundColor = .black

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

let cell:CustomTableViewCell = self.tableView.dequeueReusableCell(withIdentifier: "myCell") as! CustomTableViewCell

cell.accessoryType = .none
cell.backgroundColor = .black

return cell
}