Uso o seguinte método para fazer o download de uma imagem.

  public void downloadFile(String uRl, String title, String description) {     File direct = new File(Environment.getExternalStorageDirectory()             + "/FPSWallpapers");      if (!direct.exists()) {         direct.mkdirs();     }      DownloadManager mgr = (DownloadManager) mContext.getSystemService(Context.DOWNLOAD_SERVICE);      Uri downloadUri = Uri.parse(uRl);     DownloadManager.Request request = new DownloadManager.Request(             downloadUri);      request.setAllowedNetworkTypes(             DownloadManager.Request.NETWORK_WIFI                     | DownloadManager.Request.NETWORK_MOBILE)             .setAllowedOverRoaming(false).setTitle(title)             .setDescription(description)             .setDestinationInExternalPublicDir("/FPSWallpapers", title);      mgr.enqueue(request);  } 

Ele funciona normalmente, faz o download e salva a imagem. Mas queria mostrar um progressDialog enquanto o download é feito, e depois mostrar uma mensagem dizendo que foi conluído.

Tentei da seguinte forma:

    public void downloadFile(String uRl, String title, String description) {     ProgressDialog progress = new ProgressDialog(mContext);      while (!checkDownloadComplete.isDownloadComplete) {         progress.setMessage("Downloading Music :) ");         progress.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);         progress.setIndeterminate(true);     }     File direct = new File(Environment.getExternalStorageDirectory()             + "/FPSWallpapers");      if (!direct.exists()) {         direct.mkdirs();     }      DownloadManager mgr = (DownloadManager) mContext.getSystemService(Context.DOWNLOAD_SERVICE);      Uri downloadUri = Uri.parse(uRl);     DownloadManager.Request request = new DownloadManager.Request(             downloadUri);      request.setAllowedNetworkTypes(             DownloadManager.Request.NETWORK_WIFI                     | DownloadManager.Request.NETWORK_MOBILE)             .setAllowedOverRoaming(false).setTitle(title)             .setDescription(description)             .setDestinationInExternalPublicDir("/FPSWallpapers", title);      mgr.enqueue(request);     progress.dismiss();  } 

e a classe de Broadcastreceiver:

public class checkDownloadComplete  extends BroadcastReceiver {  public static boolean isDownloadComplete= false;  @Override public void onReceive(Context context, Intent intent) {     isDownloadComplete = true;     Log.i("Download completed?", String.valueOf(isDownloadComplete)); } 

}

Mas o app fica em algum loop que trava. Como mostrar um progressdialog enquanto faz esse download?

PS: As permissões necessárias foram dadas;