title: detecting long tap on iPhone
body: <p>I am working on an iPhone app which requires me to check if the button has been tapped &amp; held pressed for 6 seconds &amp; then fire an action which is playing some sort of sound. </p>
  
  <p>How should I detect this 6 second tap?</p>
  
  <p>On the other hand the user can also keep on tapping button for 6 seconds &amp; then the same action should fire.</p>
  
  <p>What should I do with multiple taps, how would I know that all the taps fall under the 6 second bracket?</p>