Get a Content URI from a File URI?

Question

I am using the DownloadManager to download an image to the system\'s gallery and then in the Broadcast receiver (once the download succeeds) using an Intent to set the image as

Answer 1

I was able to figure it out. It was a combination of the code found here: Converting android image URI and scanning the media file after downloading.

So after the file finished downloading I get the path and do the following:

String uriString = c.getString(c.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));

//Update the System
Uri u = Uri.parse(uriString);                       
context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, u));

//Get the abs path using a file, this is important          
File wallpaper_file = new File(u.getPath());
Uri contentURI = getImageContentUri(context, wallpaper_file.getAbsolutePath());

For some reason starting the media scanner, newing the file, and getting the absolute path are important, I'm not exactly sure why but I can't spend any more time on this!

The way to convert from a file URI to a content URI is as follows (taken from the linked StackOver flow post:

public static Uri getImageContentUri(Context context, String absPath) {
    Log.v(TAG, "getImageContentUri: " + absPath);

    Cursor cursor = context.getContentResolver().query(
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI
        , new String[] { MediaStore.Images.Media._ID }
        , MediaStore.Images.Media.DATA + "=? "
        , new String[] { absPath }, null);

    if (cursor != null && cursor.moveToFirst()) {
        int id = cursor.getInt(cursor.getColumnIndex(MediaStore.MediaColumns._ID));
        return Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI , Integer.toString(id));

    } else if (!absPath.isEmpty()) {
         ContentValues values = new ContentValues();
         values.put(MediaStore.Images.Media.DATA, absPath);
         return context.getContentResolver().insert(
            MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
    } else {
        return null;
    }
}

Maybe this will help someone in the future.