Get file path from Uri from Video Chooser

问题

In my app I start an Intent to pick a video file like this

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("video/*");
startActivityForResult(intent, kVideoPickerRequestCode);

When it comes back i get the Uri like this:

if(resultCode == RESULT_OK) {
  if (requestCode == kVideoPickerRequestCode) {
    Uri selectedVideoURI = data.getData();
  }
}

This Uri seems to be fine for my VideoView. It plays back the picked video perfectly. But now I'd like to upload the video to a server and therefore need a File.

No matter how i try to convert the Uri to a String-Path, it fails... I read some SO posts on this like How to convert content:// Uri into actual file path? or FileNotFoundException when trying to upload a recorded video to server from Android app but it's just not working for me.

Code like this always returns NULL as the path:

public static String getRealPathFromUri(Activity activity, Uri contentUri) {
  String[] proj = { MediaStore.Images.Media.DATA };
  Cursor cursor = getActivity().getContentResolver().query(uri, proj,  null, null, null);
  int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
  cursor.moveToFirst();
  return cursor.getString(column_index);
}

My test-device is running Android 4.4.2. Can it be that it's some security issue with KitKat?

Thanks for any helping hint!

回答1:

Your Uri does not necessarily represent a file on the disk. It begins with content:// meaning it is served up by the content provider for that type of file.

You don't actually need to use a file in the filesystem here (although, you can). What you want to do is stream the data from the content provider directly to the server.

There are some good examples - I would try this one for how to do this, in the first section "How to access binary data of existing content providers"

回答2:

Hello i know it is too late but recently i found the solution of same problem

I was also facing the same problem but here is the method

public static String getPath (final Context context, final Uri uri) {

    if (DEBUG)
        Log.d(TAG + " File -",
                "Authority: " + uri.getAuthority() +
                        ", Fragment: " + uri.getFragment() +
                        ", Port: " + uri.getPort() +
                        ", Query: " + uri.getQuery() +
                        ", Scheme: " + uri.getScheme() +
                        ", Host: " + uri.getHost() +
                        ", Segments: " + uri.getPathSegments().toString()
                );

    final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

    // DocumentProvider
    if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {

        // ExternalStorageProvider
        else if (isExternalStorageDocument(uri)) {
            final String docId = DocumentsContract.getDocumentId(uri);
            final String[] split = docId.split(":");
            final String type = split[0];

            if ("primary".equalsIgnoreCase(type)) {
                return Environment.getExternalStorageDirectory() + "/" + split[1];
            }

            // TODO handle non-primary volumes
        }

        // MediaProvider
        else if (isMediaDocument(uri)) {
            final String docId = DocumentsContract.getDocumentId(uri);
            final String[] split = docId.split(":");
            final String type = split[0];

            Uri contentUri = null;
            if ("image".equals(type)) {
                contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
            } else if ("video".equals(type)) {
                contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
            } else if ("audio".equals(type)) {
                contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
            }

            final String selection = "_id=?";
            final String[] selectionArgs = new String[] {
                    split[1]
            };

            return getDataColumn(context, contentUri, selection, selectionArgs);
        }
    }

// MediaStore (and general)

else if ("content".equalsIgnoreCase(uri.getScheme())) {

    // Return the remote address
    if (isGooglePhotosUri(uri))
        return uri.getLastPathSegment();

    return getDataColumn(context, uri, null, null);
}
// File



 else if ("file".equalsIgnoreCase(uri.getScheme())) {


return uri.getPath();
    }

    return null;
}

which i get from this url

--> other methods can be fetched from this FILE UTILS file enjoy coding:) --> and it gets me full video path from the uri hope it helps you :)

来源：https://stackoverflow.com/questions/21186016/get-file-path-from-uri-from-video-chooser

标签

android

security

video

uri

android-4.4-kitkat