timer.periodic flutter code example

Example 1: timer in flutter

Future.delayed(Duration(seconds: 1), () {
            print('yo hey');
          });

Example 2: flutter periodic timer

Timer.periodic(
Duration duration,
void callback(
Timer timer
)
)

Example 3: flutter performance timer

Stopwatch stopwatch = new Stopwatch()..start();
doSomething();
print('doSomething() executed in ${stopwatch.elapsed}');