폴더 경로 가져오기

1. 디펜던시 추가

pubspec.yaml

 

dependencies:

  flutter:

    sdk: flutter

  cupertino_icons: ^0.1.2

  path_provider: #new

 

패키지 임포트

import 'package:path_provider/path_provider.dart';

 

 

 

2. FutureBuilder 보일러 플레이트

            FutureBuilder<Directory>(

              future: ~~~,

              builder: (context, snapshot) {

                if (snapshot.connectionState == ConnectionState.done) {

                } else {

                  return CircularProgressIndicator();

                }

              },

            )

 

 

 

3.  폴더 경로 가져오기

getApplicationDocumentsDirectory()
getTemporaryDirectory()
getExternalStorageDirectory()

 

 

테스트해볼것.

getApplicationDocumentsDirectory() → Future<Directory>
getApplicationSupportDirectory() → Future<Directory>
getDownloadsDirectory() → Future<Directory?>
getExternalCacheDirectories() → Future<List<Directory>?>
getExternalStorageDirectories({StorageDirectory? type}) → Future<List<Directory>?>
getExternalStorageDirectory() → Future<Directory?>
getLibraryDirectory() → Future<Directory>
getTemporaryDirectory() → Future<Directory>

 

 

[전체소스]

import 'dart:io';

import 'package:flutter/material.dart';

import 'package:path_provider/path_provider.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> {

  @override

  Widget build(BuildContext context) {

    return Scaffold(

      appBar: AppBar(

        title: Text(widget.title),

      ),

      body: Center(

        child: Column(

          mainAxisAlignment: MainAxisAlignment.center,

          children: <Widget>[

            FutureBuilder<Directory>(

              future: getTemporaryDirectory(),

              builder: (context, snapshot) {

                if (snapshot.connectionState == ConnectionState.done) {

                  return Text("tempDir : ${snapshot.data.path}");

                } else {

                  return CircularProgressIndicator();

                }

              },

            ),

            Divider(

              height: 12.0,

            ),

            FutureBuilder<Directory>(

              future: getApplicationDocumentsDirectory(),

              builder: (context, snapshot) {

                if (snapshot.connectionState == ConnectionState.done) {

                  return Text("appDir : ${snapshot.data.path}");

                } else {

                  return CircularProgressIndicator();

                }

              },

            ),

            Divider(

              height: 12.0,

            ),

            FutureBuilder<Directory>(

              future: getExternalStorageDirectory(),

              builder: (context, snapshot) {

                if (snapshot.connectionState == ConnectionState.done) {

                  return Text("externalDir : ${snapshot.data.path}");

                } else {

                  return CircularProgressIndicator();

                }

              },

            ),

          ],

        ),

      ), // This trailing comma makes auto-formatting nicer for build methods.

    );

  }

}