安卓（李某测试）拨打 苹果（李朴2），进入对话界面，
弹出键盘，弹出报错,在chat_room.dart文件中
1
2
3
4
5
6
7
8
9
10
11
| [VERBOSE-2:ui_dart_state.cc(177)] Unhandled Exception: 'package:flutter/src/widgets/scroll_controller.dart': Failed assertion: line 112 pos 12: '_positions.isNotEmpty': ScrollController not attached to any scroll views.
#0 _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:46:39)
#1 _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5)
#2 ScrollController.position (package:flutter/src/widgets/scroll_controller.dart:112:12)
#3 _ChatRoomState.didChangeMetrics (package:polars_app/pages/chat/chat_room.dart:708:27)
#4 WidgetsBinding.handleMetricsChanged (package:flutter/src/widgets/binding.dart:571:16)
#5 _rootRun (dart:async/zone.dart:1190:13)
#6 _CustomZone.run (dart:async/zone.dart:1093:19)
#7 _CustomZone.runGuarded (dart:async/zone.dart:997:7)
#8 _invoke (dart:ui/hooks.dart:251:10)
#9 _updateWindowMetrics (dart:ui/hooks.dart:53:3)
|
解决：在访问maxScrollExtent属性前一定要判断_scrollController.hasClients
1
2
3
| if (_scrollController.hasClients) {
_scrollController.position.maxScrollExtent;
}
|
问题描述：
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
[RC-Flutter-IM] iOS error sendMessage 33003
[VERBOSE-2:ui_dart_state.cc(177)] Unhandled Exception: NoSuchMethodError: The method '+' was called on null.
Receiver: null
Tried calling: +(":该消息内容为空，可能该消息没有在原生 SDK 中注册")
#0 Object.noSuchMethod (dart:core-patch/object_patch.dart:51:5)
#1 MessageFactory.map2Message (package:rongcloud_im_plugin/src/util/message_factory.dart:120:40)
#2 MessageFactory.string2Message (package:rongcloud_im_plugin/src/util/message_factory.dart:27:12)
#3 RongIMClient.sendMessageWithCallBack (package:rongcloud_im_plugin/src/rong_im_client.dart:187:43)
<asynchronous suspension>
#4 RongIMClient.sendMessageCarriesPush (package:rongcloud_im_plugin/src/rong_im_client.dart:116:12)
#5 RongIMClient.sendMessage (package:rongcloud_im_plugin/src/rong_im_client.dart:92:12)
#6 _ChatRoomState._sendMessage (package:polars_app/pages/chat/chat_room.dart:2765:32)
#7 _ChatRoomState._sendMessageClick (package:polars_app/pages/chat/chat_room.dart:2144:9)
#8 _ChatRoomState._buildTextComposer.<anonymous closure>.<anonymous closure> (package:polars_app/pages/chat/chat_room.dart:2097:29)
#9 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:993:19)
#10 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:1111:38)
#11 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:183:24)
#12 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:598:11)
#13 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:287:5)
#14 BaseTapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:259:7)
#15 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:157:27)
#16 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:362:20)
#17 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:338:22)
#18 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:267:11)
#19 GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:295:7)
#20 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:240:7)
#21 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:213:7)
#22 _rootRunUnary (dart:async/zone.dart:1206:13)
#23 _CustomZone.runUnary (dart:async/zone.dart:1100:19)
#24 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1005:7)
#25 _invoke1 (dart:ui/hooks.dart:265:10)
#26 _dispatchPointerDataPacket (dart:ui/hooks.dart:174:5)
|
分析：
1
2
3
4
5
6
|
msg = await RongIMClient.send
RyManager.instance.connect();
RongIMClient.connect(token)
|
无法连接融云，暂停；
继续调试
李朴2 userID：1174605640773193730
李某测试 userID：1107918162780569602
李某测试 (userID：1107918162780569602) android
打给
李朴2 (userID：1174605640773193730) iOS,锁屏超过一分钟
at 11:56
14：00 等待融云官方回复
app_helper——–>go web page ——->web view