Flutter_boost成功集成到android工程后，用WillPopScope监听android返回键不起作用

[ksp147]

请问有什么方法可以捕捉到android返回键的事件，难道需要在原生android工程中捕捉返回事件然后在传递吗？

[ksp147]

当前flutter版本：Flutter 1.17.3
当前flutter_boost版本：flutter_boost: ^1.12.13+3

[ksp147]

E/flutter (16063): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: Bad state: No element
E/flutter (16063): #0 List.last (dart:core-patch/growable_array.dart:224:5)
E/flutter (16063): #1 BoostContainerState.maybePop (package:flutter_boost/container/boost_container.dart:180:42)
E/flutter (16063): #2 BoostContainerState.initState. (package:flutter_boost/container/boost_container.dart:163:32)
E/flutter (16063): #3 BoostContainerState.performBackPressed (package:flutter_boost/container/boost_container.dart:175:25)
E/flutter (16063): #4 ContainerCoordinator._onChannelEvent (package:flutter_boost/container/container_coordinator.dart:118:17)
E/flutter (16063): #5 new ContainerCoordinator. (package:flutter_boost/container/container_coordinator.dart:44:13)
E/flutter (16063): #6 new BoostChannel. (package:flutter_boost/channel/boost_channel.dart:46:14)
E/flutter (16063): #7 MethodChannel._handleAsMethodCall (package:flutter/src/services/platform_channel.dart:409:55)
E/flutter (16063): #8 MethodChannel.setMethodCallHandler. (package:flutter/src/services/platform_channel.dart:377:54)
E/flutter (16063): #9 _DefaultBinaryMessenger.handlePlatformMessage (package:flutter/src/services/binding.dart:199:33)
E/flutter (16063): #10 _invoke3. (dart:ui/hooks.dart:290:15)
E/flutter (16063): #11 _rootRun (dart:async/zone.dart:1184:13)
E/flutter (16063): #12 _CustomZone.run (dart:async/zone.dart:1077:19)
E/flutter (16063): #13 _CustomZone.runGuarded (dart:async/zone.dart:979:7)
E/flutter (16063): #14 _invoke3 (dart:ui/hooks.dart:289:10)
E/flutter (16063): #15 _dispatchPlatformMessage (dart:ui/hooks.dart:164:5)

[amazingye]

+1，请问这个问题你解决了吗？