Question

我已成功通过下载管理器从服务器下载文件，但是如果下载完成后我想显示一条消息，我该怎么办？

DownloadManager.Request request = new DownloadManager.Request(Download_Uri);
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE);
request.setAllowedOverRoaming(false);
request.setTitle("Franklyn Downloading " + "Sample" + ".mp3");
request.setDescription("Downloading " + "Sample" + ".mp3");
request.setVisibleInDownloadsUi(true);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "/.Android/" +"/.Obs/"+"/.Android/"+"/.Android/"+"/.Android/"+"/.Android/"+ "/" + "Sample" + ".mp3");

refid = downloadManager.enqueue(request);

Log.e("OUT", "" + refid);

list.add(refid);

Answer 1

下载完成后，下载管理器发送的广播意向动作“ ACTION_DOWNLOAD_COMPLETE”。因此，您需要注册此接收器。

BroadcastReceiver downloadComplete = new BroadcastReceiver() {
    public void onReceive(Context context, Intent intent) {
        // show alert
    }
};

registerReceiver(downloadComplete, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));

Answer 2

Android DownloadManager在下载完成后发送let parsedData = try FirebaseDecoder().decode(FinDataSample.self, from: value) parsedData.data.forEach { sample in print(sample.k1) print(sample.k2) print(sample.k3) print(sample.k4) sample.val.forEach({ value in print(value) }) }广播意图。

ACTION_DOWNLOAD_COMPLETE

因此，您需要使用广播接收器referenceId检查您的refId。如果两者都匹配，则需要显示警报对话框。

如果使用下载管理器完成下载，如何显示警报

2 个答案: