如何打开存储无论是在资源/原材料或资产文件夹中的PDF文件？

问题描述

我要显示PDF在我的应用程序，以及PDF格式必须与应用程序捆绑在一起。

I'm going to show a pdf in my application, and the pdf has to be bundled with the application.

有什么好办法做到这一点？

What is a good way to do this?

我已阅读，有可能通过添加PDF文件到RES /原始文件夹要做到这一点，并从那里读它，但我得到的项目错误，当我把pdf文件存在。

I have read that it might be possible to do this by adding the pdf file to a res/raw folder and read it from there, but i get project errors when i put the pdf file there.

所以，我试图把PDF文件在该项目的资源文件夹，它给了没有错误。

So i tried to put the pdf file in the asset folder of the project, and it gave no errors.

这就是我一直在努力，显示PDF：

This is how i've tried to show the pdf:

File pdfFile = new File("res/raw/file.pdf");
Uri path = Uri.fromFile(pdfFile);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(path, "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

任何意见或建议？

Any ideas or suggestions?

在此先感谢

推荐答案

您将能够从显示它生/ 或资产/ 如果您的应用程序实际上实现了一个PDF阅读器。既然你想让它显示在一个单独的应用程序（如Adobe Reader的），我建议做如下：

You would be able to show it from raw/ or assets/ if your application actually implemented a PDF reader. Since you want it to be displayed in a separate application (such as Adobe Reader), I suggest doing the following:

1. 保存在资产/ 目录中的PDF文件。
2. 当用户想查看某个地方将它复制公开。看看<$c$c>openFileOutput或<$c$c>getExternalFilesDir.
3. 启动意图就像你现在正在做，除非使用<$c$c>getAbsolutePath()上为意图的数据新创建的文件。

1. Store the PDF file in the assets/ directory.
2. When the user wants to view it, copy it somewhere public. Look into openFileOutput or getExternalFilesDir.
3. Launch the Intent just like you are doing now, except use getAbsolutePath() on the newly created file for the intent's data.

请注意，用户可能没有一个PDF阅读应用程序。在这种情况下，捕捉是有用的<$c$c>ActivityNotFoundException并显示相应的消息。

Be aware that a user might not have a PDF reading application. In this case, it is useful to catch the ActivityNotFoundException and show an appropriate message.

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