zipArchive

 ZipArchive *unZip = [[ZipArchive alloc]init];
  if ([unZip unzipOpenFile:savePath]) {
        BOOL ret = [unZip unzipFileTo:createDic overwrite:YES];
        if (ret == YES) {
             NSLog(@"zip success");
          [unZip closeZipFile];
        }
}