我有用progressbar压缩文件的代码，压缩成功了，但是progressbar得到max的速度很快，而压缩的操作还在运行，我试了很多次不知道是什么问题。这是我的密码：

final String inputFolderPath = "/storage/emulated/0/Alarms/123";
final String outZipPath = "/storage/emulated/0/Alarms/test.zip";
final ProgressBar progressbar1 = findViewbyId(R.id.progressbar1);
final Handler mainHandler = new Handler(Looper.getMainLooper());
        Thread zipping;
        zipping = new Thread(new Runnable() {
            @Override
            public void run() {       
    try {
        java.io.FileOutputStream fos = new java.io.FileOutputStream(outZipPath);
        java.util.zip.ZipOutputStream zos = new java.util.zip.ZipOutputStream(fos);
        java.io.File srcFile = new java.io.File(inputFolderPath);
        java.io.File[] files = srcFile.listFiles();
        Log.d("", "Zip directory: " + srcFile.getName());
        int bytesRead;
        long totalBytesRead = 0;
        long totalBytesReadé = 0;
        for (int i = 0; i < files.length; i++) {

            byte[] buffer = new byte[4 * 1024];
            java.io.FileInputStream fis = new java.io.FileInputStream(files[i]);
            zos.putNextEntry(new java.util.zip.ZipEntry(files[i].getName()));      
             totalBytesRead += files[i].length();   
            while (!Thread.currentThread().isInterrupted()
                            &&(bytesRead = fis.read(buffer)) != -1) {
                zos.write(buffer, 0, bytesRead);
                progressbar1.setMax((int)totalBytesRead);
                                   totalBytesReadé += bytesRead;
                final int fin = (int)(totalBytesReadé);
                 mainHandler.post(new Runnable() {
                            @Override
                            public void run() {
                                progressbar1.setProgress(fin);                             
                            }
                        });             
            }
            zos.closeEntry();
            fis.close();
        }
        zos.close();
    } catch (java.io.IOException ioe) {
        Log.e("", ioe.getMessage());
    }   
           }

        });
     zipping.start();

我希望有人能帮我解决这个问题，提前谢谢