使用位于原始或资产文件夹中的文件

Question

Currently I am able to download a file off the internet and store on the SD card, then use the file from there. However that makes the file (with proprietary data) available to be seen. I would prefer to use the file from somewhere like raw or assets folder. I will skip the downloading code, but my code to use the file is this

  File myFile = new File (android.os.Environment.getExternalStorageDirectory() + "/folder/filename.xml");
  Intent myIntent = new Intent(Intent.ACTION_VIEW);
  myIntent.setData(Uri.fromFile(myFile));

Android opens the file with the default application and all is good.

I have found similar Q/A's that revolve around using code like

  Uri.parse("android.resource://com.projectname.testing/raw/filename");

and

  InputStream ins  = getResources().openRawResource(R.raw.filename);

but I can't work out how to get either of those two back into a 'file' format to be used with my .setData code

I would like to solve my problem by simply accessing the file as a file. However since it is being used by an external application I have read I might need to make a temporary copy of the file with mode_world_readable then delete it after the application closes. This sounds like a lot of extra work, especially since my code above does work for a file stored on the SD card.

Does anyone have any ideas? Thanks

Answer 1

I would prefer to use the file from somewhere like raw or assets folder.

Note that these too can be "seen".

but I can't work out how to get either of those two back into a 'file' format to be used with my .setData code

setData() does not take a File . It takes a Uri . Use Uri.parse() to parse other types of Uri values -- you already have this code shown above.

However since it is being used by an external application I have read I might need to make a temporary copy of the file with mode_world_readable then delete it after the application closes.

It definitely will need to be world-readable. Also, not all apps support all schemes, so apps that support file:// or http:// might not support android.resource:// .