import 'dart:io';

import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      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> {
  File _image;

  getImageFromGallary() {
    getImage(ImageSource.gallery);
  }

  getImageFromCamera() {
    getImage(ImageSource.camera);
  }

  Future getImage(ImageSource source) async {
    var image = await ImagePicker.pickImage(source: source);

    setState((){
      _image = image;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
          child: _image == null ? Text('画像が選択されていません'): Image.file(_image)
      ),
      floatingActionButton: Column(
        crossAxisAlignment: CrossAxisAlignment.end,
        mainAxisAlignment: MainAxisAlignment.end,
        children: <Widget> [
          FloatingActionButton(
            onPressed: getImageFromCamera,
            tooltip: 'カメラ撮影',
            child:
            Icon(Icons.add_a_photo),
          ),
          FloatingActionButton(
            onPressed: getImageFromGallary,
            tooltip: '写真',
            child:
            Icon(Icons.photo_album),
          ),

        ],
      ),
    );
  }

}