accessoryButtonTappedForRowWithIndexPath: not getting called

The doc says that the method tableView:accessoryButtonTappedForRowWithIndexPath: is not called when an accessory view is set for the row at indexPath. The method is only called when the accessoryView property is nil and when one uses and set the accessoryType property to display a built-in accessory view.

As I understand it, accessoryView and accessoryType are mutually exclusive. When using accessoryType, the system will call tableView:accessoryButtonTappedForRowWithIndexPath: as expected, but you have to handle the other case by yourself.

The way Apple does this is shown in the Accessory sample project of the SDK. In the cellForRowAtIndexPath method of the dataSource delegate, they set a target/action to a custom accessory button. Since one can't pass the indexPath to the action, they call an auxiliary method to retrieve the corresponding indexPath and they pass the result to the delegate method:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    ...    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];    ...    // set the button's target to this table view controller so we can interpret touch events and map that to a NSIndexSet    [button addTarget:self action:@selector(checkButtonTapped:event:) forControlEvents:UIControlEventTouchUpInside];    ...    cell.accessoryView = button;    return cell;}- (void)checkButtonTapped:(id)sender event:(id)event{    NSSet *touches = [event allTouches];    UITouch *touch = [touches anyObject];    CGPoint currentTouchPosition = [touch locationInView:self.tableView];    NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint: currentTouchPosition];    if (indexPath != nil){        [self tableView: self.tableView accessoryButtonTappedForRowWithIndexPath: indexPath];    }}

For some reason, your setup seems to fall in the accessoryView case. Have you tried to set the accessoryType with code instead of using the Interface Builder ?

This seems very relevant...

Disclosure indicator: When this element is present, users know they can tap anywhere in the row to see the next level in the hierarchy or the choices associated with the list item. Use a disclosure indicator in a row when selecting the row results in the display of another list. Don’t use a disclosure indicator to reveal detailed information about the list item; instead, use a detail disclosure button for this purpose.

Detail disclosure button: Users tap this element to see detailed information about the list item. (Note that you can use this element in views other than table views, to reveal additional details about something; see “Detail Disclosure Buttons” for more information.) In a table view, use a detail disclosure button in a row to display details about the list item. Note that the detail disclosure button, unlike the disclosure indicator, can perform an action that is separate from the selection of the row. For example, in Phone Favorites, tapping the row initiates a call to the contact; tapping the detail disclosure button in the row reveals more information about the contact.

Converting the top answer to Swift 3:

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {    ...    let unseletcedImage = UIImage(named: "<imagename>")    let seletcedImage = UIImage(named: "<imagename>")    let button = UIButton(type: .custom)    // match the button's size with the image size    let frame = CGRect(x: CGFloat(0.0), y: CGFloat(0.0), width: CGFloat((unseletcedImage?.size.width)!), height: CGFloat((unseletcedImage?.size.height)!))    button.frame = frame    button.setBackgroundImage(unseletcedImage, for: .normal)    button.setBackgroundImage(seletcedImage, for: .selected)    cell?.accessoryView = button    let action = #selector(checkButtonTapped(sender:event:))    (cell?.accessoryView as? UIButton)?.addTarget(self, action: action, for: .touchUpInside)    ....    return cell!}@objc func checkButtonTapped(sender: UIButton?, event: UIEvent) {    let touches = event.allTouches    let touch = touches!.first    guard let touchPosition = touch?.location(in: self.tableView) else {        return    }    if let indexPath = tableView.indexPathForRow(at: touchPosition) {        tableView(self.tableView, accessoryButtonTappedForRowWith: indexPath)    }}