進度條重新啓動

Question

我使用Apache和Async在FTP上傳文件。問題在於，在大文件（即200 Mb）上，進度條重新啓動其進度，但上傳仍在繼續（我從計算機上檢查FTP）。

這是我看到的logcat：

1->2->3->4->5->6->7->8-> -8 -> -7 .... to 8 and starts again 

異步後臺代碼：

con = new FTPClient(); 
con.setConnectTimeout(300000); 
con.setDataTimeout(300000); 
// con.setKeepAlive(true); 

con.connect("host IP",21);     
if (con.login("user", "password")) 
{ 
    con.enterLocalPassiveMode(); // important! 
    con.setFileType(FTP.BINARY_FILE_TYPE); 

    boolean directoryExists = con.changeWorkingDirectory(Email); 
    File CloudVersionSysForRestore = new File(getFilesDir()+File.separator+"Cloud Version.itb"); 

    try { 
     CloudVersionSysForRestore.createNewFile(); 
     OutputStream OutstreamCloud = new FileOutputStream(new File(CloudVersionSysForRestore.getPath()));         
     con.retrieveFile("/"+Email+"/Cloud Version.itb", OutstreamCloud); 

     OutstreamCloud.close(); 

     if(x!=2){ 
      BufferedReader bufferedReader = new BufferedReader(new FileReader(new File(getFilesDir()+File.separator+"Cloud Version.itb"))); 
      String read; 
      StringBuilder builder = new StringBuilder(""); 

      while((read = bufferedReader.readLine()) != null) { 
       Log.w("READ", read); 
       builder.append(read); 
      } 
      bufferedReader.close(); 

      long getintfromstring = Long.parseLong(builder.toString());   
      if(getintfromstring<Version){ 
       Log.w("Version", String.valueOf(Version)); 
       try{ 
/************************************ UPLOAD + Progress ****************************/ 
        long fileSize = DBToUploadFromInternalStorage.length(); 
        int sentBytes = 0; 
        InputStream inputStream = new FileInputStream(DBToUploadFromInternalStorage);   
        System.out.println("Start uploading second file"); 
        OutputStream outputStream = con.storeFileStream("PilotLogbookDB.itb"); 
        byte[] bytesIn = new byte[4 * 1024]; 
        int read1 = 0;       
        while ((read1 = inputStream.read(bytesIn)) !=-1) { 
         outputStream.write(bytesIn, 0, read1); 
         sentBytes+=read1; 
         final int progress = (int) ((sentBytes * 100)/fileSize); 

         runOnUiThread(new Runnable() { 
          public void run() { 
           pd.setProgress(progress); 
           Log.w("Progress", String.valueOf(progress)); 
          } 
         }); 
        }         
        outputStream.close(); 
        inputStream.close(); 

/************************************ UPLOAD + Progress ****************************/ 
       } 
       catch(Exception e){ 
        e.printStackTrace(); 
        x=2; 
       } 

       boolean completed = con.completePendingCommand(); 

對於龍是這樣嗎？

/************************************ UPLOAD + Progress ****************************/ 
               long fileSize = DBToUploadFromInternalStorage.length(); 
               long sentBytes = 0; 
               InputStream inputStream = new FileInputStream(DBToUploadFromInternalStorage);  

                System.out.println("Start uploading second file"); 
                OutputStream outputStream = con.storeFileStream("PilotLogbookDB.itb"); 
                byte[] bytesIn = new byte[4 * 1024]; 
                int read1 = 0;       
                while ((read1 = inputStream.read(bytesIn)) !=-1) { 

                 outputStream.write(bytesIn, 0, read1); 
                 sentBytes+=read1; 
                 final long progress = (long) ((sentBytes * 100)/fileSize); 



                 runOnUiThread(new Runnable() { 
                  public void run() { 

                   pd.setProgress(Long.bitCount(progress)); 
                   Log.w("Progress", String.valueOf(progress)); 




                  } 
                 }); 
                } 


                outputStream.close(); 
                inputStream.close(); 








               /************************************ UPLOAD + Progress ****************************/ 

Answer 1

你在final int progress = /*...*/你乘以100的進度計數器，從而降低您可以通過100倍，使用的實際字節數行使用int作爲進度計數器（sentBytes），但是，你應該得到通過將其更改爲更高的可能值：

final int progress = (int) ((((double) sentBytes)/fileSize) * 100); 

或者，如果你有更大的文件（> 2 GB），您可能更願意使用一個long。