main.dart

import 'package:flutter/material.dart';
import 'package:animations/animations.dart';
import 'package:flutter_iroiro/second_page.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter1 = 0;
  int _counter2 = 0;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
          child: Column(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
          // 1.チップが押されたら画面遷移する
          InputChip(
              backgroundColor: Colors.black12,
              avatar: CircleAvatar(
                backgroundColor: Colors.grey.shade800,
                child: Text('K'),
              ),
              label: Text('A画面へ移動'),
              onPressed: () {
                Navigator.push(
                  context,
                  MaterialPageRoute(builder: (context) => SecondPage()),
                );
              }),
          // 2.チップが押されたら画面内の処理を行う
          InputChip(
              backgroundColor: Colors.black38,
              avatar: CircleAvatar(
                backgroundColor: Colors.grey.shade800,
                child: Text(_counter1.toString()),
              ),
              label: Text('Increment'),
              onPressed: () {
                setState(() {
                  _counter1++;
                });
              }),
          // 3.チップのアイコン部分が押されたら画面内の処理を行う
          Container(
              margin: EdgeInsets.all(20.0),
              width: 100,
              padding: EdgeInsets.all(5.0),
              decoration: new BoxDecoration(
                borderRadius: BorderRadius.circular(100),
                color: Colors.black12,
              ),
              child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: <Widget>[
                    Padding(
                        padding: EdgeInsets.only(right: 10),
                        child: Text(_counter2.toString())),
                    InkWell(
                        child: Icon(Icons.add),
                        onTap: () {
                          setState(() {
                            _counter2++;
                          });
                        })
                  ]))
        ],
      )),
    );
  }
}