startTimer method

void startTimer()

start Timer. 启动定时Timer.

Implementation

void startTimer() {
    if (_isActive || mInterval <= 0) return;
    _isActive = true;
    Duration duration = Duration(milliseconds: mInterval);
    _doCallback(0);
    _mTimer = Timer.periodic(duration, (Timer timer) {
        _doCallback(timer.tick);
    });
}