解决The method ‘buildViewportChrome‘ isn‘t defined in a superclass of ‘CusBehavior‘

解决更新完Flutter版本后报错The method 'buildViewportChrome' isn't defined in a superclass of 'CusBehavior'提示

参考文档: https://docs.flutter.dev/release/breaking-changes/3-3-deprecations#scrollbehaviorbuildviewportchrome

问题原因:

方法ScrollBehavior.buildViewportChrome已在v2.1中弃用。

解决方式:

使用buildOverscrollIndicator代替buildViewportChrome方法

修改前的代码

class CusBehavior extends ScrollBehavior {
  @override
  Widget buildViewportChrome(
      BuildContext context, Widget child, AxisDirection axisDirection) {
    if (Platform.isAndroid || Platform.isFuchsia) return child;
    return super.buildViewportChrome(context, child, axisDirection);
  }
}

修改后的代码

class CusBehavior extends ScrollBehavior {
  @override
  Widget buildOverscrollIndicator(
      BuildContext context, Widget child, ScrollableDetails details) {
    if (Platform.isAndroid || Platform.isFuchsia) return child;
    return super.buildOverscrollIndicator(context, child, details);
  }
}

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