将进度条设置为KB和MB而不是％for android下载管理器

Question

我尝试从网址下载图片，我需要显示文件的大小和文件下载的进度。

这就是我所拥有的。

 int bytes_downloaded = cursor.getInt(cursor
                        .getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
                int bytes_total = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));

 final int dl_progress = (int) ((bytes_downloaded * 100l) / bytes_total);
                runOnUiThread(new Runnable() {

                    @Override
                    public void run() {
                        getFileSize(fileSizeInKB);
                        mProgressDialog.setProgress((int) dl_progress);

                    }
  });

As of now its showing %(ie..10/100)

如果我将其设置为 mProgressDialog.setProgressNumberFormat("%1d kb / %2d kB") 它显示为 1kb of 100kb ，但无法获取我尝试下载的文件的实际大小

我需要显示为 1.2MB / 3.6MB

问题是进度显示如下所示60/100但我不想要

Answer 1

最后让它发挥作用：

这是方式

long  downloadedsize, filesize;
public static final double SPACE_KB = 1024;
public static final double SPACE_MB = 1024 * SPACE_KB;
public static final double SPACE_GB = 1024 * SPACE_MB;
public static final double SPACE_TB = 1024 * SPACE_GB;

并将其设置为进度条

mProgressDialog.setProgressNumberFormat((bytes2String(downloadedsize)) + "/" + (bytes2String(filesize)));

方法：将字节转换为字符串

public static String bytes2String(long sizeInBytes) {

        NumberFormat nf = new DecimalFormat();
        nf.setMaximumFractionDigits(2);

        try {
            if ( sizeInBytes < SPACE_KB ) {
                return nf.format(sizeInBytes) + " Byte(s)";
            } else if ( sizeInBytes < SPACE_MB ) {
                return nf.format(sizeInBytes/SPACE_KB) + " KB";
            } else if ( sizeInBytes < SPACE_GB ) {
                return nf.format(sizeInBytes/SPACE_MB) + " MB";
            } else if ( sizeInBytes < SPACE_TB ) {
                return nf.format(sizeInBytes/SPACE_GB) + " GB";
            } else {
                return nf.format(sizeInBytes/SPACE_TB) + " TB";
            }
        } catch (Exception e) {
            return sizeInBytes + " Byte(s)";
        }

  }