在連接的移動設備上讀取和寫入數據PC

Question

我正在嘗試創建一個jar客戶端，用於讀取連接到用戶PC的android平板電腦內的.db文件。現在，我必須將文件移動到Windows文件系統手動執行操作並手動移回文件。

試圖使用jmtp，但沒有奏效。

我的任務是讀取文件，將文件複製到設備上的其他位置並執行一些操作。

我該怎麼做？

PortableDeviceManager manager = new PortableDeviceManager(); 
    PortableDevice device = manager.getDevices()[0]; 
    // Connect to my mp3-player 
    device.open(); 

    System.out.println(device.getModel()); 

    System.out.println("---------------"); 

    // Iterate over deviceObjects 
    for (PortableDeviceObject object : device.getRootObjects()) { 
     // If the object is a storage object 
     if (object instanceof PortableDeviceStorageObject) { 
      PortableDeviceStorageObject storage = (PortableDeviceStorageObject) object; 

      for (PortableDeviceObject o2 : storage.getChildObjects()) { 
       if(o2.getOriginalFileName().equals("copagazmobile")){ 

        PortableDeviceFolderObject storage1 = (PortableDeviceFolderObject) o2; 
        for (PortableDeviceObject o3 : storage1.getChildObjects()) { 
         if(o3.getOriginalFileName().equals("backupdatabases")){ 
          PortableDeviceFolderObject folder = (PortableDeviceFolderObject) o3; 
          System.out.println(o3); 
          System.out.println(folder); 
         } 
        } 
        System.out.println(o2.getOriginalFileName()); 
       } 
      } 
     } 
    } 

    manager.getDevices()[0].close(); 

Answer 1

必要使用一個lib不同，我用所謂的jmtpe，我用來讀取該文件，並傳送給主機 代碼：

PortableDeviceManager manager = new PortableDeviceManager(); 
    PortableDevice device = manager.getDevices()[0]; 

    device.open(); 

    System.out.println("Dispositivo: " + device.getModel()); 

    System.out.println("---------------"); 
    System.out.println("Recuperando arquivo do Tablet"); 

    // Iterate over deviceObjects 
    for (PortableDeviceObject object : device.getRootObjects()) { 
     // If the object is a storage object 
     if (object instanceof PortableDeviceStorageObject) { 
      PortableDeviceStorageObject storage = (PortableDeviceStorageObject) object; 

      for (PortableDeviceObject o2 : storage.getChildObjects()) { 
       if(o2.getOriginalFileName().equals("copagazmobile")){ 

        PortableDeviceFolderObject storage1 = (PortableDeviceFolderObject) o2; 
        for (PortableDeviceObject o3 : storage1.getChildObjects()) { 
         if(o3.getOriginalFileName().equals("backupdatabases")){ 
          PortableDeviceFolderObject storage2 = (PortableDeviceFolderObject) o3; 

          SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd_hhmm"); 
          Calendar calendar = Calendar.getInstance(); 
          calendar.set(Calendar.YEAR, 1900); 
          Date data = calendar.getTime(); 
          String idFile = null; 
          String fileName = null; 
          for (PortableDeviceObject o4 : storage2.getChildObjects()) { 
           String dataArq = (o4.getOriginalFileName().substring(15, 28)); 

           try { 
            if(new Date(format.parse(dataArq).getTime()).after(data)){ 
             data = new Date(format.parse(dataArq).getTime()); 
             idFile = o4.getID(); 
             fileName = o4.getOriginalFileName(); 
            } 
           } catch (ParseException e) { 
            e.printStackTrace(); 
           } 
          } 
          PortableDeviceToHostImpl32 host = new PortableDeviceToHostImpl32(); 
          try { 
           File f = new File("c://sqlite//db"); 
           System.out.println("Limpando diretório de manipulação: " + f); 
           FileUtils.cleanDirectory(f); 
           System.out.println("Copiando arquivo: " + fileName); 
           host.copyFromPortableDeviceToHost(idFile, "c:/sqlite/db", device); 
           f = new File("c://sqlite//db//"+fileName); 

           File novoArquivo = new File("c://sqlite//db//copagaz_mobile_desenv.db"); 

           InputStream inStream = null; 
           OutputStream outStream = null; 
           inStream = new FileInputStream(f); 
           outStream = new FileOutputStream(novoArquivo); 

           byte[] buffer = new byte[1024]; 
           int length; 
           while ((length = inStream.read(buffer)) > 0){ 
            outStream.write(buffer, 0, length); 
           } 
           inStream.close(); 
           outStream.close(); 
           f.delete(); 


          } catch (COMException e) { 
           e.printStackTrace(); 
          } catch (IOException e) { 
           e.printStackTrace(); 
          } 
          System.out.println("Arquivo mais recente é de: " + data); 
         } 
        } 
       } 
      } 
     } 
    } 

    manager.getDevices()[0].close(); 

，併發送回文件：

PortableDeviceManager manager = new PortableDeviceManager(); 
    PortableDevice device = manager.getDevices()[0]; 

    device.open(); 

    System.out.println("---------------"); 
    System.out.println("Enviando arquivo para o Tablet"); 

    // Iterate over deviceObjects 
    for (PortableDeviceObject object : device.getRootObjects()) { 
     // If the object is a storage object 
     if (object instanceof PortableDeviceStorageObject) { 
      PortableDeviceStorageObject storage = (PortableDeviceStorageObject) object; 

      for (PortableDeviceObject o2 : storage.getChildObjects()) { 
       if(o2.getOriginalFileName().equals("copagazmobile")){ 

        PortableDeviceFolderObject storage1 = (PortableDeviceFolderObject) o2; 
        for (PortableDeviceObject o3 : storage1.getChildObjects()) { 
         if(o3.getOriginalFileName().equals("restore")){ 

          PortableDeviceFolderObject host = (PortableDeviceFolderObject) o3; 
          try { 
           File f = new File("c://sqlite//db//copagaz_mobile_desenv.db"); 
           System.out.println("Copiando arquivo .db para o Tablet"); 
           host.addAudioObject(f, "0", "1", new BigInteger("12345")); 
           System.out.println("Arquivo copiado"); 

          } catch (IOException e) { 
           e.printStackTrace(); 
          } 
         } 
        } 
       } 
      } 
     } 
    } 

    manager.getDevices()[0].close();