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IOS: UISwipeGestureRecognizer
UISwipeGestureRecognizer *recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(rightSwipeHandle:)];
[recognizer setNumberOfTouchesRequired:1];
[n16 addGestureRecognizer:recognizer];
[n17 addGestureRecognizer:recognizer];

- (void)rightSwipeHandle:(UISwipeGestureRecognizer*)gestureRecognizer{
NSLog(@"SWIPE");
}

- (void)rightSwipeHandle:(UISwipeGestureRecognizer*)gestureRecognizer{
    if(gestureRecognizer.view == n16)
    {
        // specific operation to n16
    }
    else if(gestureRecognizer.view == n17)
    {
        // specific operation to n17
    }
}

- (void)rightSwipeHandle:(UISwipeGestureRecognizer*)gestureRecognizer {
    NSLog(@"SWIPE");
    UIView *vw = [gestureRecognizer view]; // this is the view that generated the
        // gesture - either n16 or n17
}