如何在Android上使用内置下载管理器

// 创建下载任务
DownloadManager.Request request = new DownloadManager.Request(Uri.parse("下载文件的URL"));
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "文件保存路径");
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);

// 获取下载管理器实例
DownloadManager downloadManager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);

// 将下载任务加入下载队列
long downloadId = downloadManager.enqueue(request);

// 监听下载状态
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，进行相应的处理操作
        }
    }
};
registerReceiver(receiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));