How to get asset file path in Xamarin?

Question

I have data.xlsx file in Assets folder and need to get its path to apply some library.

Found several solutions here but neither works for me. For example - File Not Found Exception In Xamarin program

I tried to use file:///android_asset/data.xlsx but here is no file too.

I checked the path with: System.IO.File.Exists(filePath);

So how to get path to this file? Maybe I have to place it in different folder?

Update: possibly I can solve it this way: java.io.FileNotFoundException: This file can not be opened as a file descriptor; it is probably compressed

But I can't find where to place it.

Update: this question is about Java and this is unclear how to use this solution in Xamarin.Android: How to get the android Path string to a file on Assets folder?

try to use * file://android_asset/data.xlsx * instead of *file:///android_asset/data.xlsx* — Milad Yarmohammadi, Sep 04 '16 at 09:37
see http://stackoverflow.com/questions/8474821/how-to-get-the-android-path-string-to-a-file-on-assets-folder — Sven-Michael Stübe, Sep 04 '16 at 11:40
Does your library not have an overload that has a stream as parameter instead of a filename? — Sven-Michael Stübe, Sep 04 '16 at 12:07
@InfernumDeus If the library does not accept a `Stream` and only a file-based `Uri`, then copy the file, via an Asset stream, from your app bundle to a local dir (CacheDir, etc...) and pass that file path to your library method... — SushiHangover, Sep 04 '16 at 16:50

score 3 · Answer 1 · answered Sep 04 '16 at 09:52

3

Looks like the file isn't included in the APK. Ensure that the Build Action of the file in the Asset-folder is set to AndroidAsset.

answered Sep 04 '16 at 09:52

Stefan Wanitzek

2,059
1
15
29

Good point but yes, it was automatically set to AndroidAsset. – InfernumDeus Sep 04 '16 at 09:55
Do you get a valid stream if you open the asset via a the AssetManager? – Stefan Wanitzek Sep 04 '16 at 09:58

score 1 · Answer 2 · answered Sep 04 '16 at 18:29

1

in general using Xamarin.android , you can use this code :

private string _fileName {get;set;}

      public string FileFullPath
      {
         get
          {
            return Path.Combine(Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryPictures),_fileName);
          }
      }

Hope it helps.. :)

answered Sep 04 '16 at 18:29

Mabrouk MAHDHI

104
4

Can i somehow refer to any different directory than `Android.OS.Environment.DirectoryPictures`? My file is input data so this sounds a bit inappropriate. – InfernumDeus Sep 11 '16 at 06:35
1

`Android.OS.Environment.GetExternalStoragePublicDirectory` is now deprecated – Uzair Ali Jun 10 '20 at 12:10

score 0 · Accepted Answer · answered Sep 18 '16 at 07:18

0

Looks like it's impossible.

Closest solution is to write file to Cache.

answered Sep 18 '16 at 07:18

InfernumDeus

1,185
1
11
33

How to get asset file path in Xamarin?

3 Answers3