How to implement count down timer in flutter dart

Was this Tutorial helpful? Spread Motivation on me by supporting paypal.me/Raja... In this flutter tutorial, we will implement a count down timer in flutter application using Timer Class of dart language.
We are going to make use of dart Timer Class with periodic function to implement CountDownTimer. A Timer Class can we used to make count down in flutter app.
use a periodic timer to repeatedly loop in same interval time. Inside Timer.periodic set a fixed interval duration so that a loop runs exactly at a duration as defined.
Count-down timer using setState() to update Timer Value.
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