资产文件夹中的Pdf文件无法在第三方应用中打开 [英] Pdf File In asset folder not open in thirdparty app

问题描述

我是Android新手，我在此路径中存在一些PDF文件 asset/pdf/example.pdf

Hi I am new in android i have some PDF file that exist in this path asset/pdf/example.pdf

当我尝试使用此代码的PDF文件

when i try PDF file with this code

Intent intent = new Intent(Intent.ACTION_VIEW);
    File file = new File("file:///android_asset/pdf/example.pdf");
    intent.setDataAndType( Uri.fromFile( file ), "application/pdf" );
    startActivity(intent);

我收到此错误&知道这是因为第三方无权访问文件什么是解决方案?

i get this error & know it's because third party has no access to file what is solution?

推荐答案

知道这是因为第三方无权访问文件

know it's because third party has no access to file

file:///android_asset/仅适用于 WebView AFAIK.

file:///android_asset/ only works for WebView AFAIK.

什么是解决方案?

what is solution?

您可以使用我的 StreamProvider ，其中提供了 ContentProvider ，可以从资产/提供文件.

You can use my StreamProvider, which offers a ContentProvider that can serve a file from assets/.

或者，您可以实现自己的 ContentProvider ，该内容可以从 assets/提供文件.

Or, you can implement your own ContentProvider that can serve the file from assets/.

或者，您可以将资产复制到本地文件(例如，在 getFilesDir()或 getCacheDir()中)，

Or, you can copy the asset to a local file (e.g., in getFilesDir() or getCacheDir()), then use FileProvider to serve that local file.

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