android中解压文件

public static boolean Ectract(String sZipPathFile, String sDestPath) {
  boolean flag = false;
  try {
   // 先指定压缩档的位置和档名，建立FileInputStream对象
   FileInputStream fins = new FileInputStream(sZipPathFile);
   // 将fins传入ZipInputStream中
   ZipInputStream zins = new ZipInputStream(fins);
   ZipEntry ze = null;
   byte ch[] = new byte[8192];
   while ((ze = zins.getNextEntry()) != null) {
    File zfile = new File(sDestPath + ze.getName());
    File fpath = new File(zfile.getParentFile().getPath());
    if (ze.isDirectory()) {
     if (!zfile.exists())
      zfile.mkdirs();
     zins.closeEntry();
    } else {
     if (!fpath.exists())
      fpath.mkdirs();
     FileOutputStream fouts = new FileOutputStream(zfile);
     int i;
     while ((i = zins.read(ch)) != -1)
      fouts.write(ch, 0, i);
     zins.closeEntry();
     fouts.close();
    }
   }
   fins.close();
   zins.close();
   flag = true;
  } catch (Exception e) {
   flag = false;
  } finally {
   if (!flag) {
    String[] namesArray = new String[] { "detailicon", "listicon", "optionicon", "quickscanicon", "secclassicon", "smallicon" };
    for (int i = 0; i < namesArray.length; i++) {
     File file = new File(sDestPath + namesArray[i]);
     if (file.exists())
      DownLoadPic.deleteDir(file);
    }

   }
  }
  return flag;
 }