flutter_file_adapter 0.0.1

A new Flutter package project.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_file_adapter/flutter_file_adapter.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(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

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

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  String path = '/data/path/test2.text';
  String text = '';
  bool isExist = false;
  File file;

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    GlobalFileStore.instance.ready();
  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          children: <Widget>[
            TextButton(
              onPressed: () {
                setState(() {
                  file = File(path);
                });
              },
              child: Text(
                '初始化',
              ),
            ),
            TextButton(
              onPressed: () {
                file.writeAsBytesSync([2]);
              },
              child: Text(
                '写文件',
              ),
            ),
            Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                TextButton(
                  onPressed: () async {
                    setState(() {
                      isExist = file.existsSync();
                    });
                  },
                  child: Text(
                    '文件是否存在',
                  ),
                ),
                Text('isExist: $isExist')
              ],
            ),
            Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                TextButton(
                  onPressed: () async {
                    List<int> list = await file.readAsBytes();
                    setState(() {
                      text = list.toString();
                    });
                  },
                  child: Text(
                    '读文件',
                  ),
                ),
                Text('$path: $text')
              ],
            ),
          ],
        ),
      ),
    );
  }
}