Android Java -下载管理器未使用正确的名称保存

DownloadManager.Request request = new DownloadManager.Request(Uri.parse(downloadUrl));

request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);

DownloadManager downloadManager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);

long downloadId = downloadManager.enqueue(request);

BroadcastReceiver receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
        if (id == downloadId) {
            // 下载完成，进行相应的处理
        }
    }
};
registerReceiver(receiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));