title: Popping System Alert on UISwitch's 'ON' state
body: <p>I am new to this and this is my first question.
  Would any one let me know whether we <strong>can or cannot</strong> pop a <strong>System Alert</strong> on UISwitch's 'ON' state.
  I Know we can have custom alert but i don't want that.It is related to GPS whereby when the user switches on the switch it should give you an System Alert asking to on your GPS.</p>