Android的下载管理器获得的文件名 [英] Android DownloadManager get filename

问题描述

在我的应用程序，你可以下载一些文件。我用过Android 下载管理器类下载。下载完成后，它应该显示我已下载的文件的消息。的问题是，有可能是2,3或4的下载在同一时间。我的的BroadcastReceiver code是这样的：

In my app you can download some files. I used the Android DownloadManager class for downloading. After the download is completed, it should show me a message that the file was downloaded. The problem is, there could be 2,3 or 4 downloads at the same time. My BroadcastReceiver code looks like this:

receiver_complete = new BroadcastReceiver(){
         @Override
          public void onReceive(Context context, Intent intent) {
             String action = intent.getAction();
                if (action.equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE) ){
                    Toast.makeText(MainActivity.this, MainActivity.this.getString(R.string.download_finished, "Here should be the name", Toast.LENGTH_SHORT).show();
                }
         }
     };

我怎样才能得到最终下载的当前文件名？

How can I get the current filename of the finished download?

非常感谢你。

推荐答案

我想你想要把这样的事情在你的如果块。替换 YO​​UR_DM 您的下载管理器实例。

I think you want to put something like this inside your if block. Replace YOUR_DM with your DownloadManager instance.

Bundle extras = intent.getExtras();
DownloadManager.Query q = new DownloadManager.Query();
q.setFilterById(extras.getLong(DownloadManager.EXTRA_DOWNLOAD_ID));
Cursor c = YOUR_DM.query(q);

if (c.moveToFirst()) {
    int status = c.getInt(c.getColumnIndex(DownloadManager.COLUMN_STATUS));
    if (status == DownloadManager.STATUS_SUCCESSFUL) {
        // process download
        title = c.getString(c.getColumnIndex(DownloadManager.COLUMN_TITLE));
        // get other required data by changing the constant passed to getColumnIndex
    }
}

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