IllegalStateException: Reply already submitted" error

[bvedam]

Hi - I have an app, where I retrieve events for a given date. It works for all days except the current date. You can see in the below logs, it works for Jan 5 and Jan 3, but for Jan 4 I get the "IllegalStateException: Reply already submitted" error. I tried messing with the dates, and it appears like the issue occurs when the date overlaps with current date, and retrieveEvents is called. Could you please shed some light on what's going on. Thanks.

Flutter version: 1.0.0+1
device_calendar: ^0.0.7
Device: Android 7.0 (API 27)

Stacktrace:
D/ViewRootImpl@7f9cfc6MainActivity: ViewPostImeInputStage processPointer 1
I/flutter (18333): Sat, Jan 5, 2019
I/flutter (18333): startDate: 2019-01-05 00:00:00.000, endDate: 2019-01-06 00:00:00.000
D/ViewRootImpl@7f9cfc6MainActivity: ViewPostImeInputStage processPointer 0
D/ViewRootImpl@7f9cfc6MainActivity: ViewPostImeInputStage processPointer 1
I/flutter (18333): Fri, Jan 4, 2019
I/flutter (18333): startDate: 2019-01-04 00:00:00.000, endDate: 2019-01-05 00:00:00.000
I/System.out(18333): title must not be null
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): Failed to handle method call
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): java.lang.IllegalStateException: Reply already submitted
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at io.flutter.view.FlutterNativeView$1.reply(FlutterNativeView.java:174)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler$1.success(MethodChannel.java:203)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at com.builttoroam.devicecalendar.CalendarDelegate.finishWithSuccess(CalendarDelegate.kt:571)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at com.builttoroam.devicecalendar.CalendarDelegate.retrieveEvents(CalendarDelegate.kt:305)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at com.builttoroam.devicecalendar.DeviceCalendarPlugin.onMethodCall(DeviceCalendarPlugin.kt:82)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:200)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at io.flutter.view.FlutterNativeView.handlePlatformMessage(FlutterNativeView.java:163)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at android.os.MessageQueue.next(MessageQueue.java:323)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at android.os.Looper.loop(Looper.java:136)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at android.app.ActivityThread.main(ActivityThread.java:6780)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1500)
E/MethodChannel#plugins.builttoroam.com/device_calendar(18333): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1390)
E/FlutterNativeView(18333): Uncaught exception in binary message listener
E/FlutterNativeView(18333): java.lang.IllegalStateException: Reply already submitted
E/FlutterNativeView(18333): at io.flutter.view.FlutterNativeView$1.reply(FlutterNativeView.java:174)
E/FlutterNativeView(18333): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:218)
E/FlutterNativeView(18333): at io.flutter.view.FlutterNativeView.handlePlatformMessage(FlutterNativeView.java:163)
E/FlutterNativeView(18333): at android.os.MessageQueue.nativePollOnce(Native Method)
E/FlutterNativeView(18333): at android.os.MessageQueue.next(MessageQueue.java:323)
E/FlutterNativeView(18333): at android.os.Looper.loop(Looper.java:136)
E/FlutterNativeView(18333): at android.app.ActivityThread.main(ActivityThread.java:6780)
E/FlutterNativeView(18333): at java.lang.reflect.Method.invoke(Native Method)
E/FlutterNativeView(18333): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1500)
E/FlutterNativeView(18333): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1390)
I/flutter (18333): PlatformException(500, title must not be null, null)
Reloaded 1 of 429 libraries in 1,227ms.
D/ViewRootImpl@7f9cfc6MainActivity: ViewPostImeInputStage processPointer 0
D/ViewRootImpl@7f9cfc6MainActivity: ViewPostImeInputStage processPointer 1
I/flutter (18333): Thu, Jan 3, 2019
I/flutter (18333): startDate: 2019-01-03 00:00:00.000, endDate: 2019-01-04 00:00:00.000

[bvedam]

Resolved the issue. It was a data problem. I had created an event with no title for test purpose that was causing this exception. I did look at the "title must not be null" error but the IllegalStateException took me in a different direction. Closing the issue

[bvedam]

Though the root cause for the failure is data, I still think the call should succeed containing the event item with null title, rather than totally failing. Agree?

[MaikuB]

Agreed, could you consider submitting a PR?

[MaikuB]

This should be resolved in the latest release