How to Set TableViewCell Focus colour in tvOS - objective-c

Question

Default focus color of UITableViewCell is white colour.
How can we change the focus colour of UITableView cell?

Answer 1

You can set this as in the code below:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// ...
cell.focusStyle = UITableViewCellFocusStyleCustom;
// ...
return cell;
}
- (void)tableView:(UITableView *)tableView didUpdateFocusInContext:(UITableViewFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
{
if ([context.previouslyFocusedView isKindOfClass:[UITableViewCell class]])
context.previouslyFocusedView.backgroundColor = [UIColor clearColor];
if ([context.nextFocusedView isKindOfClass:[UITableViewCell class]])
context.nextFocusedView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.3];
}

Answer 2

It is a swift code. Please convert to Objective-C and try it. It maybe help you.
override func didUpdateFocusInContext(context: UIFocusUpdateContext, withAnimationCoordinator coordinator: UIFocusAnimationCoordinator) {
if let nextFoc = context.nextFocusedView as? YourCellName{
nextFoc.backgroundColor = UIColor.redColor()
}
if let prevFocus = context.previouslyFocusedView as? YourCellName{
prevFocus.backgroundColor = UIColor.clearColor()
}
Look it a screen shot.

Answer 3

If you want to maintain the fancy parallax cells you can first set a background view on your custom cell:
self.backgroundView = UIView()
And in your viewcontroller with the tableview do something like this:
func tableView(tableView: UITableView, didUpdateFocusInContext context: UITableViewFocusUpdateContext, withAnimationCoordinator coordinator: UIFocusAnimationCoordinator) {
(context.nextFocusedView as! MyCustomTableviewCell).backgroundView!.backgroundColor = UIColor.purpleColor()
if let prev = context.previouslyFocusedView as? MyCustomTableviewCell {
// Set the color back to whatever it was, in this case I have a black background with black cells
prev.backgroundView?.backgroundColor = UIColor.blackColor()
}
}

Answer 4

If you are using custom tableViewCell, then you can use the delegate method of the tableViewCell as below,
- (void)didUpdateFocusInContext:(UIFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
{
if (self.focused)
{
[self showHighlightedCellStyle];//set highlighted bg color
}
else
{
[self showNormalCellStyle];//reset the bg color
}
}