title: UiTextField's Touch Down Event on uitableviewcell doesn't work always
body: <p>Ok I'm new on iOS, and I found out something really peculiar. I'm using a UITextField embedded in an UITableViewCell, and I'm trying that when I touch the textfield it shows an UIPopOverController with some options.</p>
  
  <p>I was using the EditingDidBegin Event, it works fine, but when I try to touch twice the same textfield just works the first time, so I have to touch another textfield and touch again the first textfield.</p>
  
  <p>So, I tried to change and to use TouchDown Event but I found that it does not always work correctly I have to touch several times the textfield and sometimes it never works, I don't know why, because when I use the same event in an textfield embedded in an UiView everythig works fine.</p>
  
  <p>I don't know if I have to change something on the UiTableView or on the UITableViewCell, I'm using storyboard with xCode 4.2.</p>
  
  <p>I would be great if someone can help me.</p>