FlutterFlutter原理 HitTestBehavior 介绍

HitTestBehavior 是一个枚举

enum HitTestBehavior {
  /// Targets that defer to their children receive events within their bounds
  /// only if one of their children is hit by the hit test.
  deferToChild,

  /// Opaque targets can be hit by hit tests, causing them to both receive
  /// events within their bounds and prevent targets visually behind them from
  /// also receiving events.
  opaque,

  /// Translucent targets both receive events within their bounds and permit
  /// targets visually behind them to also receive events.
  translucent,
}

• deferToChild

deferToChild： 命中测试决定于子组件是否通过命中测试

• opaque

顾名思义不透明的，也就是说自己接收命中测试，但是会阻碍前兄弟节点进行命中测试

• translucent

顾名思义半透明，也就是说自己可以命中测试，但是不会阻碍前兄弟节点进行命中测试

demo 测试

import 'package:flutter/material.dart';

class HitTestWidget exte