How to handle UITableViewCell delete button animation while swiping to the left?

Question

I want to handle swiping event inside the cell in order to set alpha value of delete button increasing gradually.

I would like to have like this:

As It is seen in the image, while swiping the cell through the left side, editing buttons' alpha increases. And finally It is set to 1.0. How can I implement increasing alpha on swiping using default red delete button? Note: I have followed the Bradens' answer to handle delete button inside the cell in iOS 6/7.

Answer 1

Try to use SWTableViewCell, and try to change the alpha value when user is swiping.

- (NSArray *)rightButtons
{
    NSMutableArray *rightUtilityButtons = [NSMutableArray new];
    [rightUtilityButtons sw_addUtilityButtonWithColor:
    [UIColor colorWithRed:0.78f green:0.78f blue:0.8f alpha:1.0]
                                            title:@"More"];
    [rightUtilityButtons sw_addUtilityButtonWithColor:
    [UIColor colorWithRed:1.0f green:0.231f blue:0.188 alpha:1.0f]
                                            title:@"Delete"];

    return rightUtilityButtons;
}

my guess would be to set and reset alpha from

- (void)swipeableTableViewCell:(SWTableViewCell *)cell scrollingToState:(SWCellState)state

P.S, i did not try this library before.