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
– Milad Yarmohammadi, Commented Sep 4, 2016 at 9:37
Does your library not have an overload that has a stream as parameter instead of a filename? — Sven-Michael Stübe
– Sven-Michael Stübe, Commented Sep 4, 2016 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
– SushiHangover, Commented Sep 4, 2016 at 16:50

Stefan Wanitzek · Accepted Answer · 2016-09-04 09:52:58Z

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 4, 2016 at 9:52

Stefan Wanitzek

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2 Comments

InfernumDeus Over a year ago

Good point but yes, it was automatically set to AndroidAsset.

Stefan Wanitzek Over a year ago

Do you get a valid stream if you open the asset via a the AssetManager?

Mabrouk MAHDHI · Accepted Answer · 2016-09-04 18:29:26Z

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 4, 2016 at 18:29

Mabrouk MAHDHI

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2 Comments

InfernumDeus Over a year ago

Can i somehow refer to any different directory than Android.OS.Environment.DirectoryPictures? My file is input data so this sounds a bit inappropriate.

Uzair Ali Over a year ago

Android.OS.Environment.GetExternalStoragePublicDirectory is now deprecated

InfernumDeus · Accepted Answer · 2016-09-18 07:18:01Z

0

Looks like it's impossible.

Closest solution is to write file to Cache.

answered Sep 18, 2016 at 7:18

InfernumDeus

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