在我StatelessWidget
岁的时候,我有一个周期性计时器.这里是一段生成计时器的代码,不需要太多细节:
class AnniversaryHomePage extends StatelessWidget {
. . .
void _updateDisplayTime(StoreInheritedWidget inheritedWidget) {
String anniversaryString = inheritedWidget.prefs.getString('anniversaryDate');
inheritedWidget.store.dispatch(DateTime.parse(anniversaryString));
}
/// Widget Methods
@override
Widget build(BuildContext context) {
final inheritedWidget = StoreInheritedWidget.of(context);
new Timer.periodic(this.refreshRate, (Timer timer) => _updateDisplayTime(inheritedWidget));
. . .
}
当我try 将应用程序的起始点输入flutter test
时,得到以下错误消息:
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
The following assertion was thrown running a test:
A periodic Timer is still running even after the widget tree was disposed.
'package:flutter_test/src/binding.dart': Failed assertion: line 668 pos 7:
'_fakeAsync.periodicTimerCount == 0'
问题是,我用错了我的Timer.periodic
美元吗?如果没有,我如何减轻此错误?