0.3.7 迁移 flutter 2.0 null safety

[leftcoding]

迁移 null safety

[CLAassistant]

All committers have signed the CLA.

[gx2015]

迁移 null safety

您好！ 使用您的分支，发现一个问题：adapter_extensions 文件：SimpleFlowAdapter.dynamic 和 SimpleFlowAdapter.listLike 中 @deprecated key 没有处理成可选 require 关键字未去掉

[leftcoding]

迁移 null safety

您好！ 使用您的分支，发现一个问题：adapter_extensions 文件：SimpleFlowAdapter.dynamic 和 SimpleFlowAdapter.listLike 中 @deprecated key 没有处理成可选 require 关键字未去掉

好的。

[emodeqidao]

迁移 null safety

到目前为止 稳定吗？

[leftcoding]

迁移 null safety

到目前为止 稳定吗？

还行，我们公司用着，没啥问题

[danieldai]

有个函数迁移后含义有点变化：

迁移后所有的subReducer都是对原始的state进行处理，所以只有最后一个subreducer产生了效果

  return (T state, Action action) {
    T? _copy;
    bool hasChanged = false;
    for (SubReducer<T>? subReducer in notNullReducers) {
      _copy = subReducer?.call(state, action, hasChanged);
      hasChanged = hasChanged || _copy != state;
    }
    assert(_copy != null);
    return _copy;
  };

  return (T state, Action action) {
    T copy = state;
    bool hasChanged = false;
    for (SubReducer<T> subReducer in notNullReducers) {
      copy = subReducer(copy, action, hasChanged);
      hasChanged = hasChanged || copy != state;
    }
    assert(copy != null);
    return copy;
  };

[shirne]

notNullReducers

把notNullReducers过滤成非空项的List，这里含义就可以改回来

final List<SubReducer<T>?>? notNullReducers = subReducers
      .where((SubReducer<T>? e) => e != null)
      .toList(growable: false);
// 修改为

final List<SubReducer<T>>? notNullReducers = subReducers
      .whereType<SubReducer<T>>().toList();

T _copy = state;
    bool hasChanged = false;
    for (SubReducer<T> subReducer in notNullReducers) {
      _copy = subReducer.call(_copy, action, hasChanged);
      hasChanged = hasChanged || _copy != state;
    }

有好几处，对照修改就可以了

[leftcoding]

notNullReducers

把notNullReducers过滤成非空项的List，这里含义就可以改回来

final List<SubReducer<T>?>? notNullReducers = subReducers
      .where((SubReducer<T>? e) => e != null)
      .toList(growable: false);
// 修改为

final List<SubReducer<T>>? notNullReducers = subReducers
      .whereType<SubReducer<T>>().toList();

T _copy = state;
    bool hasChanged = false;
    for (SubReducer<T> subReducer in notNullReducers) {
      _copy = subReducer.call(_copy, action, hasChanged);
      hasChanged = hasChanged || _copy != state;
    }

有好几处，对照修改就可以了

嗯，有几个没改好。

[bauer-bao]

Flutter Exception type '() => Object' is not a subtype of type '() => DataPackageUnuseItemState' of 'getter'

0 Component.buildComponent (package:fish_redux/src/redux_component/component.dart)

                                                            #1      DynamicFlowAdapter.buildAdapter.<anonymous closure> (package:fish_redux/src/redux_adapter/dynamic_flow_adapter.dart:78:27)
                                                            #2      combineListAdapters.<anonymous closure> (package:fish_redux/src/redux_adapter/recycle_context.dart:106:35)
                                                            #3      SliverChildBuilderDelegate.build (package:flutter/src/widgets/sliver.dart:471:22)
                                                            #4      SliverMultiBoxAdaptorElement._build (package:flutter/src/widgets/sliver.dart:1236:28)
                                                            #5      SliverMultiBoxAdaptorElement.createChild.<anonymous closure> (package:flutter/src/widgets/sliver.dart:1250:55)
                                                            #6      BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2597:19)
                                                            #7      SliverMultiBoxAdaptorElement.createChild (package:flutter/src/widgets/sliver.dart:1242:12)
                                                            #8      RenderSliverMultiBoxAdaptor._createOrObtainChild.<anonymous closure> (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:349:23)
                                                            #9      RenderObject.invokeLayoutCallback.<anonymous closure> (package:flutter/src/rendering/object.dart:2025:59)
                                                            #10     PipelineOwner._enableMutationsToDirtySubtrees (package:flutter/src/rendering/object.dart:918:15)
                                                            #11     RenderObject.invokeLayoutCallback (package:flutter/src/rendering/object.dart:2025:14)
                                                            #12     RenderSliverMultiBoxAdaptor._createOrObtainChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:338:5)
                                                            #13     RenderSliverMultiBoxAdaptor.addInitialChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:422:5)
                                                            #14     RenderSliverList.performLayout (package:flutter/src/rendering/sliver_list.dart:79:12)
                                                            #15     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #16     RenderSliverEdgeInsetsPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:137:12)
                                                            #17     RenderSliverPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:371:11)
                                                            #18     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #19     RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:510:13)
                                                            #20     RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1580:12)
                                                            #21     RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1489:20)
                                                            #22     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #23     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
                                                            #24     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #25     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
                                                            #26     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #27     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
                                                            #28     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #29     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
                                                            #30     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #31     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
                                                            #32     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #33     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
                                                            #34     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #35     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
                                                            #36     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #37     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
                                                            #38     RenderCustomPaint.performLayout (package:flutter/src/rendering/custom_paint.dart:545:11)
                                                            #39     RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
                                                            #40     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)

adapter会有这样的问题，该如何解决？

[iMinger]

Flutter Exception type '() => Object' is not a subtype of type '() => DataPackageUnuseItemState' of 'getter' #0 Component.buildComponent (package:fish_redux/src/redux_component/component.dart) #1 DynamicFlowAdapter.buildAdapter. (package:fish_redux/src/redux_adapter/dynamic_flow_adapter.dart:78:27) #2 combineListAdapters. (package:fish_redux/src/redux_adapter/recycle_context.dart:106:35) #3 SliverChildBuilderDelegate.build (package:flutter/src/widgets/sliver.dart:471:22) #4 SliverMultiBoxAdaptorElement._build (package:flutter/src/widgets/sliver.dart:1236:28) #5 SliverMultiBoxAdaptorElement.createChild. (package:flutter/src/widgets/sliver.dart:1250:55) #6 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2597:19) #7 SliverMultiBoxAdaptorElement.createChild (package:flutter/src/widgets/sliver.dart:1242:12) #8 RenderSliverMultiBoxAdaptor._createOrObtainChild. (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:349:23) #9 RenderObject.invokeLayoutCallback. (package:flutter/src/rendering/object.dart:2025:59) #10 PipelineOwner._enableMutationsToDirtySubtrees (package:flutter/src/rendering/object.dart:918:15) #11 RenderObject.invokeLayoutCallback (package:flutter/src/rendering/object.dart:2025:14) #12 RenderSliverMultiBoxAdaptor._createOrObtainChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:338:5) #13 RenderSliverMultiBoxAdaptor.addInitialChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:422:5) #14 RenderSliverList.performLayout (package:flutter/src/rendering/sliver_list.dart:79:12) #15 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #16 RenderSliverEdgeInsetsPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:137:12) #17 RenderSliverPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:371:11) #18 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #19 RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:510:13) #20 RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1580:12) #21 RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1489:20) #22 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #23 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14) #24 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #25 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14) #26 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #27 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14) #28 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #29 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14) #30 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #31 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14) #32 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #33 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14) #34 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #35 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14) #36 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #37 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14) #38 RenderCustomPaint.performLayout (package:flutter/src/rendering/custom_paint.dart:545:11) #39 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7) #40 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)

adapter会有这样的问题，该如何解决？

hi 老哥，遇到了跟你一样的问题，请问你有没有解决这个问题？