小编Mar*_*ter的帖子

目前我正在尝试使用 DownloadManager 下载文件，但这不起作用，下载开始，但下载后下载文件夹内没有文件。

这就是我的代码：

 private void downloadAddon() {
        try{
            DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
          //  request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI);
            request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE);
            request.setTitle("download");
            request.setDescription("apk downloading");
            // request.setAllowedOverRoaming(false);
            request.setDestinationUri(Uri.fromFile(new File(getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS) , "mod.mcpack")));
            DownloadManager downloadManager =  (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
            long downloadID = downloadManager.enqueue(request);

            //Just for testing
            if (downloadComplete(downloadID)) {
                Toast.makeText(this, "Download Status: Completed", Toast.LENGTH_SHORT).show();
            }else{
                Toast.makeText(this, "Download Status: Error", Toast.LENGTH_SHORT).show();
            }
        }catch (Exception e){
            //Not required, there is no error that crashes the app
            Toast.makeText(this, "Error catched: " + e.getMessage(), Toast.LENGTH_SHORT).show();

        }

}
private boolean downloadComplete(long downloadId){
    DownloadManager …