cron execute bug

[huangye0]

hi , why when i start two cron use one Cron instance like below:
one cron is every twenty seconds to print something; anothre cron is every two minutes to print something
then the print is unexpected, the two minutes print will print 60 times every two minute;the twenty seconds print seems ok

Isn't it a bug??? it should print one time at every two minutes, why it print so many times at every two minutes???

however if two cron use more than 59s the print is ok

[isoos]

Could you please copy-paste the setup code (inside ``` ``` backticks?

[isoos]

I have two theories about your issue:

• The mobile app has put to sleep and waking from the background triggered the events.
• Flutter did a hot reload, and the events were a side effect of this.

In either case, package:cron is not deisgned to be run inside Flutter, it was meant for server-side, long-running apps.

[huangye0]

my project is a desktop application(windows/mac) use flutter; I get the cron from pub.dev
it seems when i use both of them are seconds it prints ok
final cron = Cron();
cron.schedule(Schedule.parse('*/30 * * * * '), ()async {
print(' 30seconds ${DateTime.now()}');
});
cron.schedule(Schedule.parse('/20 * * * * *'), ()async {
print('20seconds ${DateTime.now()}');
});

[huangye0]

if i use two different cron instance ,it prints ok.
final cron = Cron();
cron.schedule(Schedule.parse('*/20 * * * * '), ()async {
print(' 20seconds ${DateTime.now()}');
});
final cron2=Cron();
cron2.schedule(Schedule.parse('/2 * * * *'), ()async {
print('2minutes ${DateTime.now()}');
});

[isoos]

Thanks for reporting in such detail, I know see the problem. Not sure when I'll be able to track it down, until then, please use the multiple cron instance workaround (or if you have time, feel free to debug it, I review and accept PRs).