从Flutter资产加载.pdf文件/自定义文件 [英] Load .pdf file / custom file from flutter assets

问题描述

我的问题是，在部署 flutter应用时，是否可以在诸如资产的应用资源中加载.pdf文件?我想使用以下方式显示PDF文件:

My question is if there is a way to load a .pdf file in app resources like assets when deploying flutter app ? I'd like to display a PDF file using this:

https://pub.dartlang.org/packages/flutter_full_pdf_viewer

但未从Internet加载；)

but without loading from internet ;)

推荐答案

将资产复制到临时文件中.

Copy the asset to a temporary file.

  Future<File> copyAsset() async {
    Directory tempDir = await getTemporaryDirectory();
    String tempPath = tempDir.path;
    File tempFile = File('$tempPath/copy.pdf');
    ByteData bd = await rootBundle.load('assets/asset.pdf');
    await tempFile.writeAsBytes(bd.buffer.asUint8List(), flush: true);
    return tempFile;
  }

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