Essentially, the user touches an interface element, then slides their finger off the element to "cancel" the touch.
For most iPhone UI buttons/elements, it doesn't register a button click unless the the finger touches down on the button then releases up off the same button.
Essentially, the user touches an interface element, then slides their finger off the element to "cancel" the touch.
For most iPhone UI buttons/elements, it doesn't register a button click unless the the finger touches down on the button then releases up off the same button.