camera Example

androidFlutter05Example.dart

import 'package:flutter/material.dart';
import 'package:andtest/Logic.dart';
import 'dart:typed_data';

class ProfilePage extends StatefulWidget {
  @override
  _ProfilePageState createState() => _ProfilePageState();
}

class _ProfilePageState extends State<ProfilePage> {
  CameraLogic _cameraLogic;
  Uint8List _imgData;
  @override
  void initState() {
    _cameraLogic = new CameraLogic()
      ..channelOnData((Uint8List data){
        setState(() {
          this._imgData = data;
        });
      });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text("프로필 변경"),),
      body: SingleChildScrollView(
        child: Container(
          child: Column(
            children: [
              GestureDetector(
                onTap: () async{
                  if(this._imgData != null){
                    setState(() {
                      this._imgData = null;
                    });
                    return;
                  }
                  await _cameraLogic.camActionChannel();
                  return;
                },
                child: Container(
                  margin: this._widgetMargin,
                  width: MediaQuery.of(context).size.width/3,
                  height: MediaQuery.of(context).size.width/3,
                  decoration: this._imgWidget(),
                ),
              ),
              Container(
                padding: this._widgetPadding,
                decoration: BoxDecoration(
                  border: Border.symmetric(horizontal: BorderSide(color: Colors.grey))
                ),
                margin: this._widgetMargin,
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    Text("이름", style: this._titleTextStyle,),
                    Text("홍길동", style: this._desTextStyle,),
                  ],
                ),
              ),
              Container(
                padding: this._widgetPadding,
                decoration: BoxDecoration(
                    border: Border.symmetric(horizontal: BorderSide(color: Colors.grey))
                ),
                margin: this._widgetMargin,
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    Text("이메일", style: this._titleTextStyle,),
                    Text("afzxc@naver.com", style: this._desTextStyle,),
                  ],
                ),
              ),
              Container(
                alignment: Alignment.center,
                margin: this._widgetMargin,
                child: MaterialButton(
                  child: Text("전송",style: this._titleTextStyle,),
                  onPressed: () async{
                    return await showDialog<void>(
                      context: context,
                      builder: (BuildContext context) => AlertDialog(
                        title: (this._imgData == null)
                          ? Text("변경 할 이미지가 없습니다")
                          : Text("이제 서버로 이미지 데이터를 보내시면 됩니다"),
                        actions: [
                          TextButton(
                            child: Text("닫기"),
                            onPressed: () => Navigator.of(context).pop<void>(),
                          )
                        ],
                      )
                    );
                  },
                  color: Colors.red,
                  textColor: Colors.white,
                ),
              )
            ],
          ),
        ),
      ),
    );
  }

  EdgeInsets _widgetPadding = EdgeInsets.symmetric(horizontal: 20.0);
  EdgeInsets _widgetMargin = EdgeInsets.only(top:20.0, left: 40.0, right: 40.0);
  TextStyle _titleTextStyle = TextStyle(fontSize: 16.0,fontWeight: FontWeight.bold);
  TextStyle _desTextStyle = TextStyle(fontSize: 16.0,);
  BoxDecoration _imgWidget() => (this._imgData == null) ? BoxDecoration(color: Colors.grey) : BoxDecoration(
    image: DecorationImage(
      image: MemoryImage(this._imgData),
      fit: BoxFit.cover
    )
  );
}