Ionic FilePath not working, how to get the file path for Android 11

Issue

I've read about all the changes in the File system for Android, because of Android 11.

Here is my problem. I'm opening a file using Android File Chooser from Ionic. https://ionicframework.com/docs/native/file-chooser

 this.androidFileChooser
        .open({ mime: 'application/pdf' })
        .then((file) => {

This gives me this response : "content://com.android.providers.downloads.documents/document/11654".

The problem is that I need to get the real location of the file to convert it to base 64, and send it with a POST Request to the client server. So before all these problems, I was using Android File Path from Ionic : https://ionicframework.com/docs/native/file-path

this.filePath.resolveNativePath(file).then((filePath) => {

And I was receiving file:///storage/emulated/0/Download/pdffile.pdf Using this, I could transform it in base64 and everything worked well.

Now, it returns me nothing for Android 11. So All the process can't work if I don't have this filepath.

Do you have a solution for Angular/Ionic, to get the file Path for a file, for Android 11? This is very problematic.

Solution

After some researches, it seems that Cordova doesn't target API 30 and the new changes in its scope. To solve my problem, I use Ionic Chooser, but using this one is problematic for the mimetype for Android (It allows to upload images from Google Drive when you set the mimetype to application/pdf). That's a loss for a win. I hope Cordova plugins maintainers will bring some solutions to these changes.

Answered By - Shinichi Kudo