inherited_w_test_a.dart

import 'package:flutter/material.dart';
import 'package:flutter_study/widget/demo_inherited/inherited_w_test_b.dart';
import 'package:flutter_study/widget/demo_inherited/inherited_w_page.dart';

class TestWidgetA extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final inheritedContext = InheritedContext.of(context);

    final inheritedTestModel = inheritedContext.inheritedTestModel;

    print('TestWidgetA 中count的值:  ${inheritedTestModel.count}');
    return new Padding(
      padding: const EdgeInsets.only(left: 10.0, top: 10.0, right: 10.0),
      child: new RaisedButton(
          textColor: Colors.black,
          child: new Text('+'),
          onPressed: inheritedContext.increment),
    );
  }
}