Flutter-保存文件对用户可见 [英] Flutter - Save file visible to the user

问题描述

在Flutter项目中，我创建了一个pdf文档.我可以将文档保存在应用程序的路径中. 但是用户无法访问它.另外，如何将文件保存到用户可以看到的另一个文件夹中?

In a Flutter project I create a pdf document. I can save the document in the path of the app. But the user has no access to it. Alternatively, how can I save the file to another folder where the user sees it?

import 'package:path_provider/path_provider.dart';
  Future<void> savePdfDocument() async {
    final PdfCreater generatedPdf = PdfCreater(document);
    final List<int> generatedPdfDocument = generatedPdf.buildPdf();

    final String dir = (await getApplicationDocumentsDirectory()).path;
    final String path = '$dir/example.pdf';
    final File file = File(path);
    file.writeAsBytesSync(generatedPdfDocument);
  }

推荐答案

在Android上使用 downloads_path_provider 它将文件保存在下载"中.

Use downloads_path_provider, on android it will save the file on Downloads.

对于IOS，您需要使用path_provider中的getApplicationDocumentsDirectory并在info.plist上添加权限以使该文件夹对用户可见:

for IOS, you need to use getApplicationDocumentsDirectoryfrom path_provider and add permissions on info.plist to make the folder visible to the user:

<key>LSSupportsOpeningDocumentsInPlace</key>
<true/>
<key>UIFileSharingEnabled</key>
<true/>

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