How can I detect a double tap on a certain cell in UITableView?

Question

How can I detect a double tap on a certain cell in UITableView?

i.e. I want to perform one action if the user made a single touch and a

Answer 1

if([touch tapCount] == 1)
{
    [self performSelector:@selector(singleTapRecevied) withObject:self afterDelay:0.3];

} else if ([touch tapCount] == 2)
  {        
    [TapEnableImageView cancelPreviousPerformRequestsWithTarget:self selector:@selector(singleTapRecevied) object:self]; 
}

Use the performSelector to call a selector instead of using a timer. This solves the issue mentioned by @V1ru8.

Answer 2

According to @lostInTransit I prepared code in Swift

var tapCount:Int = 0
var tapTimer:NSTimer?
var tappedRow:Int?

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    //checking for double taps here
    if(tapCount == 1 && tapTimer != nil && tappedRow == indexPath.row){
        //double tap - Put your double tap code here
        tapTimer?.invalidate()
        tapTimer = nil
    }
    else if(tapCount == 0){
        //This is the first tap. If there is no tap till tapTimer is fired, it is a single tap
        tapCount = tapCount + 1;
        tappedRow = indexPath.row;
        tapTimer = NSTimer.scheduledTimerWithTimeInterval(0.2, target: self, selector: "tapTimerFired:", userInfo: nil, repeats: false)
    }
    else if(tappedRow != indexPath.row){
        //tap on new row
        tapCount = 0;
        if(tapTimer != nil){
            tapTimer?.invalidate()
            tapTimer = nil
        }
    }
}

func tapTimerFired(aTimer:NSTimer){
//timer fired, there was a single tap on indexPath.row = tappedRow
    if(tapTimer != nil){
        tapCount = 0;
        tappedRow = -1;
    }
}

Answer 3

This solution is only works for UICollectionView or UITableView's cell.

First declare these variables

int number_of_clicks;

BOOL thread_started;

Then put this code in your didSelectItemAtIndexPath

++number_of_clicks;
if (!thread_started) {

    thread_started = YES;

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW,
                                 0.25 * NSEC_PER_SEC),
                   dispatch_get_main_queue(),^{

                       if (number_of_clicks == 1) {
                           ATLog(@"ONE");
                       }else if(number_of_clicks == 2){
                           ATLog(@"DOUBLE");
                       }

                       number_of_clicks = 0;
                       thread_started = NO;

                   });

        }

0.25 is the delay of between 2 clicks. I think 0.25 is perfect for detect this type of click. Now you can detect only one click and two clicks seperately. Good Luck

Answer 4

In your UITableView subclass, do something like this:

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    for (UITouch* touch in touches) {
        if (touch.tapCount == 2)
        {
            CGPoint where = [touch locationInView:self];
            NSIndexPath* ip = [self indexPathForRowAtPoint:where];
            NSLog(@"double clicked index path: %@", ip);

            // do something useful with index path 'ip'
        }
    }

    [super touchesEnded:touches withEvent:event];
}

Answer 5

Improvement for oxigen answer.

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [touches anyObject];
    if(touch.tapCount == 2) {
        CGPoint touchPoint = [touch locationInView:self];
        NSIndexPath *touchIndex = [self indexPathForRowAtPoint:touchPoint];
        if (touchIndex) {
            // Call some callback function and pass 'touchIndex'.
        }
    }
    [super touchesEnded:touches withEvent:event];
}

Answer 6

First define:

int tapCount;
NSIndexPath *tableSelection;

as class level variables in the .h file and do all the necessary setting up. Then...

- (void)tableView(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    tableSelection = indexPath;
    tapCount++;

    switch (tapCount) {
        case 1: //single tap
            [self performSelector:@selector(singleTap) withObject: nil afterDelay: .4];
            break;
        case 2: //double tap
            [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(singleTap) object:nil];
            [self performSelector:@selector(doubleTap) withObject: nil];
            break;
        default:
            break;
    }
}

#pragma mark -
#pragma mark Table Tap/multiTap

- (void)singleTap {
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Alert" message:@"Single tap detected" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alert show];   
    tapCount = 0;
}

- (void)doubleTap {
    NSUInteger row = [tableSelection row];
    companyName = [self.suppliers objectAtIndex:row]; 
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Alert" message:@"DoubleTap" delegate:nil cancelButtonTitle:@"Yes" otherButtonTitles: nil];
    [alert show];
    tapCount = 0;
}