How to create silent mode toggle application?


 1. an application that would allow you to touch a button to turn the
    ringer off.
  
 2. when you leave the meeting, you could touch
    the button again and the ringer would return to the last state that
    it was in. 
 3.You’d never have to readjust your ringer again
How to create silent mode toggle application?
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 1. an application that would allow you to touch a button to turn the
    ringer off.
  
 2. when you leave the meeting, you could touch
    the button again and the ringer would return to the last state that
    it was in. 
 3.You’d never have to readjust your ringer again