MSDK4.15，M210 RTK V2 采用自定义RTK，mediaFile.fetchFileData方法下载...

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DJI Developer Support

• November 10, 2021 04:11

MSDK4.15，M210 RTK V2 采用自定义RTK，mediaFile.fetchFileData方法下载原图，有时会下载进度卡住了，不再变化了。onProgress回调里的进度也不再变化。 请问怎么继续下载？

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  smallUniv

  • November 10, 2021 04:12

  mediaFile.fetchFileData(destDir, name, new DownloadListener<String>() {
      @Override
      public void onStart() {
  
      }
  
      @Override
      public void onRateUpdate(long total, long current, long persize) {
      }
  
      @Override
      public void onRealtimeDataUpdate(byte[] bytes, long l, boolean b) {
  
      }
  
      @Override
      public void onProgress(long total, long current) {
          double progress = (current+0.0) / total;
          photoFile.setDownloadProgress(progress);
          //FileLog.i(TAG,name+" "+String.format(" %.3f ",progress)+" "+current+"/"+total);
      }
  
      @Override
      public void onSuccess(String s) {
          long endTime=System.currentTimeMillis();
          float excTime=(float)(endTime-startTime)/1000;
          System.out.println("执行时间："+excTime+"s");
          Log.i(TAG,name+" 执行时间: "+excTime);
  
          photoFile.setDownloading(false);
          photoFile.setDownDone(true);
          Log.i(TAG,"The file has been stored, its path is " + s);
          FileLog.i(TAG,"图像"+photoFile.getName()+"下载到遥控器完成"+"。执行时间："+excTime+"s");
          //ToastUtils.setResultToToast("The file has been stored, its path is " + s);
          File file = new File(photoFile.url);
          if (file.exists()){
              try {
                  long size = getFileSize(file);
                  photoFile.setFileSizeRC(size);
                  if (size == photoFile.fileSizeUav){
                      photoFile.setDownSuccess(true);
                      FileLog.i(TAG,"图像"+photoFile.getName()+"下载到遥控器成功");
                  }else {
                      FileLog.i(TAG,"图像"+photoFile.getName()+"下载到遥控器完成但失败");
                  }
              } catch (Exception e) {
                  e.printStackTrace();
              }
          }
      }
  
      @Override
      public void onFailure(DJIError djiError) {
          FileLog.i(TAG,""+(djiError==null?"":djiError.getDescription()));
          photoFile.setDownloading(false);
          FileLog.i(TAG,"图像"+photoFile.getName()+"下载到遥控器完成但失败");
      }
  });

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  DJI Developer Support

  • November 10, 2021 08:24

  可能是图传链路的一些问题导致下载中断或者卡住，也确实没有办法取消下载。你可以试试fetchFileByteData，这个类似于断电续传，可以在上次的停电继续下载。 Link：https://developer.dji.com/api-reference/android-api/Components/Camera/DJIMediaManager_DJIMedia.html#djimediamanager_djimedia_fetchfilebytedata_inline

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