如何使用android DownloadManager類暫停和恢復？

Question

這是我的代碼，我想添加可恢復的功能，但我不能是posible？

downloadManager = (DownloadManager)getSystemService(DOWNLOAD_SERVICE); 
      Uri Download_Uri = Uri.parse("http://download.thinkbroadband.com/20MB.zip"); 
      DownloadManager.Request request = new DownloadManager.Request(Download_Uri); 

      //Restrict the types of networks over which this download may proceed. 
      request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE); 
      //Set whether this download may proceed over a roaming connection. 
      request.setAllowedOverRoaming(false); 
      //Set the title of this download, to be displayed in notifications (if enabled). 
      request.setTitle("My Data Download"); 
      //Set a description of this download, to be displayed in notifications (if enabled) 
      request.setDescription("Android Data download using DownloadManager."); 
      //Set the local destination for the downloaded file to a path within the application's external files directory 
      request.setDestinationInExternalFilesDir(this, Environment.DIRECTORY_DOWNLOADS,"20MB.zip"); 


      //Enqueue a new download and same the referenceId 
      downloadReference = downloadManager.enqueue(request); 

Answer 1

我能實現暫停/通過Android下載管理器和下載內容提供商使用以下實現恢復功能：

private boolean resumeDownload(Context context, String downloadTitle) { 
    int updatedRows = 0;   

    ContentValues resumeDownload = new ContentValues(); 
    resumeDownload.put("control", 0); // Resume Control Value 

    try { 
     updatedRows = context 
      .getContentResolver() 
      .update(Uri.parse("content://downloads/my_downloads"), 
       resumeDownload, 
       "title=?", 
       new String[]{ downloadTitle }); 
    } catch (Exception e) { 
     Log.e(TAG, "Failed to update control for downloading video"); 
    } 

    return 0 < updatedRows; 
} 

private boolean pauseDownload(Context context, String downloadTitle) { 
    int updatedRows = 0; 

    ContentValues pauseDownload = new ContentValues(); 
    pauseDownload.put("control", 1); // Pause Control Value 

    try { 
     updatedRows = context 
      .getContentResolver() 
      .update(Uri.parse("content://downloads/my_downloads"), 
       pauseDownload, 
       "title=?", 
       new String[]{ downloadTitle }); 
    } catch (Exception e) { 
     Log.e(TAG, "Failed to update control for downloading video"); 
    } 

    return 0 < updatedRows; 
}