The implementation of 'schedulingStrategy' in the non-abstract class 'CustomFlutterBinding' does not conform to its interface

[icemioi]

Error: The implementation of 'schedulingStrategy' in the non-abstract class 'CustomFlutterBinding' does not conform to its interface.
class CustomFlutterBinding extends WidgetsFlutterBinding with BoostFlutterBinding

[xujinping]

Error: The implementation of 'schedulingStrategy' in the non-abstract class 'CustomFlutterBinding' does not conform to its interface.
class CustomFlutterBinding extends WidgetsFlutterBinding with BoostFlutterBinding

参考 demo 中的 main.dart 在runApp前 要初始化 BoostFlutterBinding

[icemioi]

使用 demo 中的 CustomFlutterBinding 并初始化后还是报错

lib/main.dart:8:7: Error: The implementation of 'schedulingStrategy' in the non-abstract class 'CustomFlutterBinding' does not conform to its interface.
class CustomFlutterBinding extends WidgetsFlutterBinding with BoostFlutterBinding {
^^^^^^^^^^^^^^^^^^^^
../../../../../../../Documents/flutter/packages/flutter/lib/src/widgets/binding.dart:1228:7: Context: The return type of the method 'BindingBase with GestureBinding, SchedulerBinding.schedulingStrategy' is 'bool Function({int priority, SchedulerBinding scheduler})', which does not match the return type, 'bool Function({int priority, SchedulerBinding scheduler})', of the overridden method, 'BindingBase with GestureBinding, SchedulerBinding.schedulingStrategy'.

• 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('../../../../../../../Documents/flutter/packages/flutter/lib/src/scheduler/binding.dart').
  Change to a subtype of 'bool Function({int priority, SchedulerBinding scheduler})'.
  class WidgetsFlutterBinding extends BindingBase with GestureBinding, SchedulerBinding, ServicesBinding, PaintingBinding, SemanticsBinding, RendererBinding, WidgetsBinding {
  ^
  ../../../../../../../Documents/flutter/packages/flutter/lib/src/widgets/binding.dart:1228:7: Context: This is the overridden method ('schedulingStrategy').
  class WidgetsFlutterBinding extends BindingBase with GestureBinding, SchedulerBinding, ServicesBinding, PaintingBinding, SemanticsBinding, RendererBinding, WidgetsBinding {
  ^

[icemioi]

Error: The implementation of 'schedulingStrategy' in the non-abstract class 'CustomFlutterBinding' does not conform to its interface.
class CustomFlutterBinding extends WidgetsFlutterBinding with BoostFlutterBinding

参考 demo 中的 main.dart 在runApp前 要初始化 BoostFlutterBinding

就是报的这个错误

[ColdPaleLight]

看你这个报错和Boost没啥关系，boost也没有复写过schedulingStrategy这个方法。你用的哪个flutter版本

[icemioi]

Flutter 2.2.2
flutter_boost v3.0-preview.6

[ColdPaleLight]

好的，我试一下

[ColdPaleLight]

另外example有这个问题吗

[icemioi]

另外example有这个问题吗

example 可以运行。 在已有 Android 工程中 新增一个 flutter module。 按照 教程增加 flutter_boost依赖，按照教程初始化。 就报错了，和 flutter 版本应该无关

[ColdPaleLight]

那你那边能提供一个可复现的demo吗，另外你那边有其他自定义的WidgetsFlutterBinding吗

[FriMay0]

@ColdPaleLight 好像是Null safety的问题，新建一个Null safety的Flutter项目，导入flutter_boost，初始化CustomFlutterBinding会报错

[icemioi]

@ColdPaleLight 与 Null safety 有关， 增加 // @Dart=2.9 之后可以正常编译

[ColdPaleLight]

那这部分需要后期适配Null safety再统一看一下

[ColdPaleLight]

先关了

[f2yu]

null satety的问题，pubspec.yaml文件中，把environment改为sdk: ">=2.9.0 <3.0.0"然后不使用flutter的此特性，可暂时解决问题