在线更新apk报错

[limhGeek]

在线下载apk的时候报错
==========日志===============
E/flutter (22658): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: MissingPluginException(No implementation found for method getApkDownloadPath on channel flutter_app_upgrade)
E/flutter (22658): #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:319:7)
E/flutter (22658):
E/flutter (22658): #1 FlutterUpgrade.apkDownloadPath (package:flutter_app_upgrade/src/flutter_upgrade.dart:24:27)
E/flutter (22658): #2 _SimpleAppUpgradeWidget._clickOk (package:flutter_app_upgrade/src/simple_app_upgrade.dart:303:40)
E/flutter (22658): #3 _SimpleAppUpgradeWidget._buildOkActionButton. (package:flutter_app_upgrade/src/simple_app_upgrade.dart:269:11)
E/flutter (22658): #4 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:706:14)
E/flutter (22658): #5 _InkResponseState.build. (package:flutter/src/material/ink_well.dart:789:36)
E/flutter (22658): #6 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
E/flutter (22658): #7 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:486:11)
E/flutter (22658): #8 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:264:5)
E/flutter (22658): #9 BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:199:7)
E/flutter (22658): #10 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:467:9)
E/flutter (22658): #11 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:76:12)
E/flutter (22658): #12 PointerRouter._dispatchEventToRoutes. (package:flutter/src/gestures/pointer_router.dart:117:9)
E/flutter (22658): #13 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:379:8)
E/flutter (22658): #14 PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:115:18)
E/flutter (22658): #15 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:101:7)
E/flutter (22658): #16 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:218:19)
E/flutter (22658): #17 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
E/flutter (22658): #18 GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156:7)
E/flutter (22658): #19 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102:7)
E/flutter (22658): #20 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86:7)
E/flutter (22658): #21 _rootRunUnary (dart:async/zone.dart:1138:13)
E/flutter (22658): #22 _CustomZone.runUnary (dart:async/zone.dart:1031:19)
E/flutter (22658): #23 _CustomZone.runUnaryGuarded (dart:async/zone.dart:933:7)
E/flutter (22658): #24 _invoke1 (dart:ui/hooks.dart:273:10)
E/flutter (22658): #25 _dispatchPointerDataPacket (dart:ui/hooks.dart:182:5)
E/flutter (22658):
W/System (22658): Ignoring header moid because its value was null.
W/System (22658): Ignoring header moid because its value was null.

[LaoMengFlutter]

你是pub引入的吗？还是源代码？从日志看是缺少了getApkDownloadPath方法，是不是修改过源代码？可以clean下，然后重新引入最新版本试试

[limhGeek]

pub引入的，最后FlutterUpgrade中改成下面这样就好了：
static const MethodChannel _channel = const MethodChannel('flutter_upgrade');