如何在flutter中打开pdf，doc.pptx文件提供多种选择？

Question

我要解决这个问题----如果我单击PDF，Doc，PPTX，Docx文件，那么如何为打开该文件提供多种选择。如何在WPS Office等构建应用程序中的手机中打开该文件。

This is my code to show files in listview:

    ListView.builder(
                  scrollDirection: Axis.vertical,
                  shrinkWrap: true,
                  itemCount: attachments.length,
                  itemBuilder: (BuildContext ctxt, int index) {
                    print (index);
                    return ListView(
                        scrollDirection: Axis.vertical,
                        shrinkWrap: true,
                        children: <Widget>[
                          Padding(
                            padding: const EdgeInsets.all(1.0),
                            child: ListTile(
                              leading: CircleAvatar(
                                child: _getIcon(
                                    attachments[index].split('/').removeLast()),
                                backgroundColor: Colors.white,
                              ),
                              subtitle:
                              Text(attachments[index].split('/').removeLast()),
                              onTap: (){}
                            ),
                          ),
                        ]);
                  })

这是代码的输出：

现在点击文件时如何在手机WPS Office应用中打开该文件。

Answer 1

您可以使用软件包https://pub.dev/packages/open_file您可以在下面复制粘贴运行完整代码，并需要将文件放入/sdcard/Download/sample.csv中进行测试该软件包将为您显示可用选项

工作演示

完整代码

import 'package:flutter/material.dart';
import 'dart:async';
import 'package:open_file/open_file.dart';

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _openResult = 'Unknown';

  Future<void> openFile() async {
    //final filePath = '/sdcard/Download/sample.pdf';
    final filePath = '/sdcard/Download/sample.csv';
    print('${filePath}');
    final message = await OpenFile.open(filePath);

    setState(() {
      _openResult = message;
    });
  }

  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
        appBar: new AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              Text('open result: $_openResult\n'),
              FlatButton(
                child: Text('Tap to open file'),
                onPressed: openFile,
              ),
            ],
          ),
        ),
      ),
    );
  }
}