在Android 10及以上版本中，无法直接从图片URI获取其真实的文件路径。可以使用以下代码示例中的方法，将图片文件先复制到应用程序专有目录的缓存目录中，然后再操作该文件。

private String getFilePathFromUri(Context context, Uri uri) {
    String fileName = getFileName(uri);
    File cacheDir = context.getCacheDir();
    File file = new File(cacheDir, fileName);

    try (InputStream inputStream = context.getContentResolver().openInputStream(uri);
         OutputStream outputStream = new FileOutputStream(file)) {

        byte[] buffer = new byte[4 * 1024];
        int read;
        while ((read = inputStream.read(buffer)) != -1) {
            outputStream.write(buffer, 0, read);
        }
        outputStream.flush();

    } catch (IOException e) {
        e.printStackTrace();
    }

    return file.getAbsolutePath();
}

private String getFileName(Uri uri) {
    String fileName = "";
    Cursor cursor = getContentResolver().query(uri, null, null, null, null);
    if (cursor != null && cursor.moveToFirst()) {
        fileName = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
        cursor.close();
    }
    return fileName;
}